diff options
76 files changed, 614 insertions, 352 deletions
diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801 index 615142da4ef6..157416e78cc4 100644 --- a/Documentation/i2c/busses/i2c-i801 +++ b/Documentation/i2c/busses/i2c-i801 @@ -21,6 +21,7 @@ Supported adapters: * Intel DH89xxCC (PCH) * Intel Panther Point (PCH) * Intel Lynx Point (PCH) + * Intel Lynx Point-LP (PCH) Datasheets: Publicly available at the Intel website On Intel Patsburg and later chipsets, both the normal host SMBus controller diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index f15f82bf3a50..e968a52e4881 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -356,15 +356,15 @@ choice is nothing connected to read from the DCC. config DEBUG_SEMIHOSTING - bool "Kernel low-level debug output via semihosting I" + bool "Kernel low-level debug output via semihosting I/O" help Semihosting enables code running on an ARM target to use the I/O facilities on a host debugger/emulator through a - simple SVC calls. The host debugger or emulator must have + simple SVC call. The host debugger or emulator must have semihosting enabled for the special svc call to be trapped otherwise the kernel will crash. - This is known to work with OpenOCD, as wellas + This is known to work with OpenOCD, as well as ARM's Fast Models, or any other controlling environment that implements semihosting. diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 30eae87ead6d..a051dfbdd7db 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -284,10 +284,10 @@ zImage Image xipImage bootpImage uImage: vmlinux zinstall uinstall install: vmlinux $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ -%.dtb: +%.dtb: scripts $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ -dtbs: +dtbs: scripts $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ # We use MRPROPER_FILES and CLEAN_FILES now diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index b8c64b80bafc..81769c1341fa 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -659,10 +659,14 @@ __armv7_mmu_cache_on: #ifdef CONFIG_CPU_ENDIAN_BE8 orr r0, r0, #1 << 25 @ big-endian page tables #endif + mrcne p15, 0, r6, c2, c0, 2 @ read ttb control reg orrne r0, r0, #1 @ MMU enabled movne r1, #0xfffffffd @ domain 0 = client + bic r6, r6, #1 << 31 @ 32-bit translation system + bic r6, r6, #3 << 0 @ use only ttbr0 mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer mcrne p15, 0, r1, c3, c0, 0 @ load domain access control + mcrne p15, 0, r6, c2, c0, 2 @ load ttb control #endif mcr p15, 0, r0, c7, c5, 4 @ ISB mcr p15, 0, r0, c1, c0, 0 @ load control register diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 03fb93621d0d..5c8b3bf4d825 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -320,4 +320,12 @@ .size \name , . - \name .endm + .macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req +#ifndef CONFIG_CPU_USE_DOMAINS + adds \tmp, \addr, #\size - 1 + sbcccs \tmp, \tmp, \limit + bcs \bad +#endif + .endm + #endif /* __ASM_ASSEMBLER_H__ */ diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index e965f1b560f1..5f6ddcc56452 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -187,6 +187,7 @@ static inline unsigned long __phys_to_virt(unsigned long x) #define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET) #endif #endif +#endif /* __ASSEMBLY__ */ #ifndef PHYS_OFFSET #ifdef PLAT_PHYS_OFFSET @@ -196,6 +197,8 @@ static inline unsigned long __phys_to_virt(unsigned long x) #endif #endif +#ifndef __ASSEMBLY__ + /* * PFNs are used to describe any physical page; this means * PFN 0 == physical address 0. diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 314d4664eae7..99a19512ee26 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -199,6 +199,9 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, { pgtable_page_dtor(pte); +#ifdef CONFIG_ARM_LPAE + tlb_add_flush(tlb, addr); +#else /* * With the classic ARM MMU, a pte page has two corresponding pmd * entries, each covering 1MB. @@ -206,6 +209,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, addr &= PMD_MASK; tlb_add_flush(tlb, addr + SZ_1M - PAGE_SIZE); tlb_add_flush(tlb, addr + SZ_1M); +#endif tlb_remove_page(tlb, pte); } diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 479a6352e0b5..77bd79f2ffdb 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -101,28 +101,39 @@ extern int __get_user_1(void *); extern int __get_user_2(void *); extern int __get_user_4(void *); -#define __get_user_x(__r2,__p,__e,__s,__i...) \ +#define __GUP_CLOBBER_1 "lr", "cc" +#ifdef CONFIG_CPU_USE_DOMAINS +#define __GUP_CLOBBER_2 "ip", "lr", "cc" +#else +#define __GUP_CLOBBER_2 "lr", "cc" +#endif +#define __GUP_CLOBBER_4 "lr", "cc" + +#define __get_user_x(__r2,__p,__e,__l,__s) \ __asm__ __volatile__ ( \ __asmeq("%0", "r0") __asmeq("%1", "r2") \ + __asmeq("%3", "r1") \ "bl __get_user_" #__s \ : "=&r" (__e), "=r" (__r2) \ - : "0" (__p) \ - : __i, "cc") + : "0" (__p), "r" (__l) \ + : __GUP_CLOBBER_##__s) -#define get_user(x,p) \ +#define __get_user_check(x,p) \ ({ \ + unsigned long __limit = current_thread_info()->addr_limit - 1; \ register const typeof(*(p)) __user *__p asm("r0") = (p);\ register unsigned long __r2 asm("r2"); \ + register unsigned long __l asm("r1") = __limit; \ register int __e asm("r0"); \ switch (sizeof(*(__p))) { \ case 1: \ - __get_user_x(__r2, __p, __e, 1, "lr"); \ - break; \ + __get_user_x(__r2, __p, __e, __l, 1); \ + break; \ case 2: \ - __get_user_x(__r2, __p, __e, 2, "r3", "lr"); \ + __get_user_x(__r2, __p, __e, __l, 2); \ break; \ case 4: \ - __get_user_x(__r2, __p, __e, 4, "lr"); \ + __get_user_x(__r2, __p, __e, __l, 4); \ break; \ default: __e = __get_user_bad(); break; \ } \ @@ -130,42 +141,57 @@ extern int __get_user_4(void *); __e; \ }) +#define get_user(x,p) \ + ({ \ + might_fault(); \ + __get_user_check(x,p); \ + }) + extern int __put_user_1(void *, unsigned int); extern int __put_user_2(void *, unsigned int); extern int __put_user_4(void *, unsigned int); extern int __put_user_8(void *, unsigned long long); -#define __put_user_x(__r2,__p,__e,__s) \ +#define __put_user_x(__r2,__p,__e,__l,__s) \ __asm__ __volatile__ ( \ __asmeq("%0", "r0") __asmeq("%2", "r2") \ + __asmeq("%3", "r1") \ "bl __put_user_" #__s \ : "=&r" (__e) \ - : "0" (__p), "r" (__r2) \ + : "0" (__p), "r" (__r2), "r" (__l) \ : "ip", "lr", "cc") -#define put_user(x,p) \ +#define __put_user_check(x,p) \ ({ \ + unsigned long __limit = current_thread_info()->addr_limit - 1; \ register const typeof(*(p)) __r2 asm("r2") = (x); \ register const typeof(*(p)) __user *__p asm("r0") = (p);\ + register unsigned long __l asm("r1") = __limit; \ register int __e asm("r0"); \ switch (sizeof(*(__p))) { \ case 1: \ - __put_user_x(__r2, __p, __e, 1); \ + __put_user_x(__r2, __p, __e, __l, 1); \ break; \ case 2: \ - __put_user_x(__r2, __p, __e, 2); \ + __put_user_x(__r2, __p, __e, __l, 2); \ break; \ case 4: \ - __put_user_x(__r2, __p, __e, 4); \ + __put_user_x(__r2, __p, __e, __l, 4); \ break; \ case 8: \ - __put_user_x(__r2, __p, __e, 8); \ + __put_user_x(__r2, __p, __e, __l, 8); \ break; \ default: __e = __put_user_bad(); break; \ } \ __e; \ }) +#define put_user(x,p) \ + ({ \ + might_fault(); \ + __put_user_check(x,p); \ + }) + #else /* CONFIG_MMU */ /* @@ -219,6 +245,7 @@ do { \ unsigned long __gu_addr = (unsigned long)(ptr); \ unsigned long __gu_val; \ __chk_user_ptr(ptr); \ + might_fault(); \ switch (sizeof(*(ptr))) { \ case 1: __get_user_asm_byte(__gu_val,__gu_addr,err); break; \ case 2: __get_user_asm_half(__gu_val,__gu_addr,err); break; \ @@ -300,6 +327,7 @@ do { \ unsigned long __pu_addr = (unsigned long)(ptr); \ __typeof__(*(ptr)) __pu_val = (x); \ __chk_user_ptr(ptr); \ + might_fault(); \ switch (sizeof(*(ptr))) { \ case 1: __put_user_asm_byte(__pu_val,__pu_addr,err); break; \ case 2: __put_user_asm_half(__pu_val,__pu_addr,err); break; \ diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index ba386bd94107..281bf3301241 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -159,6 +159,12 @@ static int debug_arch_supported(void) arch >= ARM_DEBUG_ARCH_V7_1; } +/* Can we determine the watchpoint access type from the fsr? */ +static int debug_exception_updates_fsr(void) +{ + return 0; +} + /* Determine number of WRP registers available. */ static int get_num_wrp_resources(void) { @@ -604,13 +610,14 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp) /* Aligned */ break; case 1: - /* Allow single byte watchpoint. */ - if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) - break; case 2: /* Allow halfword watchpoints and breakpoints. */ if (info->ctrl.len == ARM_BREAKPOINT_LEN_2) break; + case 3: + /* Allow single byte watchpoint. */ + if (info->ctrl.len == ARM_BREAKPOINT_LEN_1) + break; default: ret = -EINVAL; goto out; @@ -619,18 +626,35 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp) info->address &= ~alignment_mask; info->ctrl.len <<= offset; - /* - * Currently we rely on an overflow handler to take - * care of single-stepping the breakpoint when it fires. - * In the case of userspace breakpoints on a core with V7 debug, - * we can use the mismatch feature as a poor-man's hardware - * single-step, but this only works for per-task breakpoints. - */ - if (!bp->overflow_handler && (arch_check_bp_in_kernelspace(bp) || - !core_has_mismatch_brps() || !bp->hw.bp_target)) { - pr_warning("overflow handler required but none found\n"); - ret = -EINVAL; + if (!bp->overflow_handler) { + /* + * Mismatch breakpoints are required for single-stepping + * breakpoints. + */ + if (!core_has_mismatch_brps()) + return -EINVAL; + + /* We don't allow mismatch breakpoints in kernel space. */ + if (arch_check_bp_in_kernelspace(bp)) + return -EPERM; + + /* + * Per-cpu breakpoints are not supported by our stepping + * mechanism. + */ + if (!bp->hw.bp_target) + return -EINVAL; + + /* + * We only support specific access types if the fsr + * reports them. + */ + if (!debug_exception_updates_fsr() && + (info->ctrl.type == ARM_BREAKPOINT_LOAD || + info->ctrl.type == ARM_BREAKPOINT_STORE)) + return -EINVAL; } + out: return ret; } @@ -706,10 +730,12 @@ static void watchpoint_handler(unsigned long addr, unsigned int fsr, goto unlock; /* Check that the access type matches. */ - access = (fsr & ARM_FSR_ACCESS_MASK) ? HW_BREAKPOINT_W : - HW_BREAKPOINT_R; - if (!(access & hw_breakpoint_type(wp))) - goto unlock; + if (debug_exception_updates_fsr()) { + access = (fsr & ARM_FSR_ACCESS_MASK) ? + HW_BREAKPOINT_W : HW_BREAKPOINT_R; + if (!(access & hw_breakpoint_type(wp))) + goto unlock; + } /* We have a winner. */ info->trigger = addr; diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index f7945218b8c6..b0179b89a04c 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -420,20 +420,23 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) #endif instr = *(u32 *) pc; } else if (thumb_mode(regs)) { - get_user(instr, (u16 __user *)pc); + if (get_user(instr, (u16 __user *)pc)) + goto die_sig; if (is_wide_instruction(instr)) { unsigned int instr2; - get_user(instr2, (u16 __user *)pc+1); + if (get_user(instr2, (u16 __user *)pc+1)) + goto die_sig; instr <<= 16; instr |= instr2; } - } else { - get_user(instr, (u32 __user *)pc); + } else if (get_user(instr, (u32 __user *)pc)) { + goto die_sig; } if (call_undef_hook(regs, instr) == 0) return; +die_sig: #ifdef CONFIG_DEBUG_USER if (user_debug & UDBG_UNDEFINED) { printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n", diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c index d6dacc69254e..395d5fbb8fa2 100644 --- a/arch/arm/lib/delay.c +++ b/arch/arm/lib/delay.c @@ -59,6 +59,7 @@ void __init init_current_timer_delay(unsigned long freq) { pr_info("Switching to timer-based delay loop\n"); lpj_fine = freq / HZ; + loops_per_jiffy = lpj_fine; arm_delay_ops.delay = __timer_delay; arm_delay_ops.const_udelay = __timer_const_udelay; arm_delay_ops.udelay = __timer_udelay; diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S index 11093a7c3e32..9b06bb41fca6 100644 --- a/arch/arm/lib/getuser.S +++ b/arch/arm/lib/getuser.S @@ -16,8 +16,9 @@ * __get_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * Outputs: r0 is the error code - * r2, r3 contains the zero-extended value + * r2 contains the zero-extended value * lr corrupted * * No other registers must be altered. (see <asm/uaccess.h> @@ -27,33 +28,39 @@ * Note also that it is intended that __get_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__get_user_1) + check_uaccess r0, 1, r1, r2, __get_user_bad 1: TUSER(ldrb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__get_user_1) ENTRY(__get_user_2) -#ifdef CONFIG_THUMB2_KERNEL -2: TUSER(ldrb) r2, [r0] -3: TUSER(ldrb) r3, [r0, #1] + check_uaccess r0, 2, r1, r2, __get_user_bad +#ifdef CONFIG_CPU_USE_DOMAINS +rb .req ip +2: ldrbt r2, [r0], #1 +3: ldrbt rb, [r0], #0 #else -2: TUSER(ldrb) r2, [r0], #1 -3: TUSER(ldrb) r3, [r0] +rb .req r0 +2: ldrb r2, [r0] +3: ldrb rb, [r0, #1] #endif #ifndef __ARMEB__ - orr r2, r2, r3, lsl #8 + orr r2, r2, rb, lsl #8 #else - orr r2, r3, r2, lsl #8 + orr r2, rb, r2, lsl #8 #endif mov r0, #0 mov pc, lr ENDPROC(__get_user_2) ENTRY(__get_user_4) + check_uaccess r0, 4, r1, r2, __get_user_bad 4: TUSER(ldr) r2, [r0] mov r0, #0 mov pc, lr diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S index 7db25990c589..3d73dcb959b0 100644 --- a/arch/arm/lib/putuser.S +++ b/arch/arm/lib/putuser.S @@ -16,6 +16,7 @@ * __put_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * r2, r3 contains the value * Outputs: r0 is the error code * lr corrupted @@ -27,16 +28,19 @@ * Note also that it is intended that __put_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__put_user_1) + check_uaccess r0, 1, r1, ip, __put_user_bad 1: TUSER(strb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_1) ENTRY(__put_user_2) + check_uaccess r0, 2, r1, ip, __put_user_bad mov ip, r2, lsr #8 #ifdef CONFIG_THUMB2_KERNEL #ifndef __ARMEB__ @@ -60,12 +64,14 @@ ENTRY(__put_user_2) ENDPROC(__put_user_2) ENTRY(__put_user_4) + check_uaccess r0, 4, r1, ip, __put_user_bad 4: TUSER(str) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_4) ENTRY(__put_user_8) + check_uaccess r0, 8, r1, ip, __put_user_bad #ifdef CONFIG_THUMB2_KERNEL 5: TUSER(str) r2, [r0] 6: TUSER(str) r3, [r0, #4] diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 119bc52ab93e..4e07eec1270d 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -63,10 +63,11 @@ static int contextidr_notifier(struct notifier_block *unused, unsigned long cmd, pid = task_pid_nr(thread->task) << ASID_BITS; asm volatile( " mrc p15, 0, %0, c13, c0, 1\n" - " bfi %1, %0, #0, %2\n" - " mcr p15, 0, %1, c13, c0, 1\n" + " and %0, %0, %2\n" + " orr %0, %0, %1\n" + " mcr p15, 0, %0, c13, c0, 1\n" : "=r" (contextidr), "+r" (pid) - : "I" (ASID_BITS)); + : "I" (~ASID_MASK)); isb(); return NOTIFY_OK; diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 6776160618ef..a8ee92da3544 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -55,6 +55,9 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page /* permanent static mappings from iotable_init() */ #define VM_ARM_STATIC_MAPPING 0x40000000 +/* empty mapping */ +#define VM_ARM_EMPTY_MAPPING 0x20000000 + /* mapping type (attributes) for permanent static mappings */ #define VM_ARM_MTYPE(mt) ((mt) << 20) #define VM_ARM_MTYPE_MASK (0x1f << 20) diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 4c2d0451e84a..c2fa21d0103e 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -807,7 +807,7 @@ static void __init pmd_empty_section_gap(unsigned long addr) vm = early_alloc_aligned(sizeof(*vm), __alignof__(*vm)); vm->addr = (void *)addr; vm->size = SECTION_SIZE; - vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING; + vm->flags = VM_IOREMAP | VM_ARM_EMPTY_MAPPING; vm->caller = pmd_empty_section_gap; vm_area_add_early(vm); } @@ -820,7 +820,7 @@ static void __init fill_pmd_gaps(void) /* we're still single threaded hence no lock needed here */ for (vm = vmlist; vm; vm = vm->next) { - if (!(vm->flags & VM_ARM_STATIC_MAPPING)) + if (!(vm->flags & (VM_ARM_STATIC_MAPPING | VM_ARM_EMPTY_MAPPING))) continue; addr = (unsigned long)vm->addr; if (addr < next) @@ -961,8 +961,8 @@ void __init sanity_check_meminfo(void) * Check whether this memory bank would partially overlap * the vmalloc area. */ - if (__va(bank->start + bank->size) > vmalloc_min || - __va(bank->start + bank->size) < __va(bank->start)) { + if (__va(bank->start + bank->size - 1) >= vmalloc_min || + __va(bank->start + bank->size - 1) <= __va(bank->start)) { unsigned long newsize = vmalloc_min - __va(bank->start); printk(KERN_NOTICE "Truncating RAM at %.8llx-%.8llx " "to -%.8llx (vmalloc region overlap).\n", diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index f34861920634..c7092e6057c5 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -38,6 +38,7 @@ config BLACKFIN select GENERIC_ATOMIC64 select GENERIC_IRQ_PROBE select IRQ_PER_CPU if SMP + select USE_GENERIC_SMP_HELPERS if SMP select HAVE_NMI_WATCHDOG if NMI_WATCHDOG select GENERIC_SMP_IDLE_THREAD select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS diff --git a/arch/blackfin/Makefile b/arch/blackfin/Makefile index d3d7e64ca96d..66cf00095b84 100644 --- a/arch/blackfin/Makefile +++ b/arch/blackfin/Makefile @@ -20,7 +20,6 @@ endif KBUILD_AFLAGS += $(call cc-option,-mno-fdpic) KBUILD_CFLAGS_MODULE += -mlong-calls LDFLAGS += -m elf32bfin -KALLSYMS += --symbol-prefix=_ KBUILD_DEFCONFIG := BF537-STAMP_defconfig diff --git a/arch/blackfin/include/asm/smp.h b/arch/blackfin/include/asm/smp.h index dc3d144b4bb5..9631598dcc5d 100644 --- a/arch/blackfin/include/asm/smp.h +++ b/arch/blackfin/include/asm/smp.h @@ -18,6 +18,8 @@ #define raw_smp_processor_id() blackfin_core_id() extern void bfin_relocate_coreb_l1_mem(void); +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); #if defined(CONFIG_SMP) && defined(CONFIG_ICACHE_FLUSH_L1) asmlinkage void blackfin_icache_flush_range_l1(unsigned long *ptr); diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index 00bbe672b3b3..a40151306b77 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -48,10 +48,13 @@ unsigned long blackfin_iflush_l1_entry[NR_CPUS]; struct blackfin_initial_pda __cpuinitdata initial_pda_coreb; -#define BFIN_IPI_TIMER 0 -#define BFIN_IPI_RESCHEDULE 1 -#define BFIN_IPI_CALL_FUNC 2 -#define BFIN_IPI_CPU_STOP 3 +enum ipi_message_type { + BFIN_IPI_TIMER, + BFIN_IPI_RESCHEDULE, + BFIN_IPI_CALL_FUNC, + BFIN_IPI_CALL_FUNC_SINGLE, + BFIN_IPI_CPU_STOP, +}; struct blackfin_flush_data { unsigned long start; @@ -60,35 +63,20 @@ struct blackfin_flush_data { void *secondary_stack; - -struct smp_call_struct { - void (*func)(void *info); - void *info; - int wait; - cpumask_t *waitmask; -}; - static struct blackfin_flush_data smp_flush_data; static DEFINE_SPINLOCK(stop_lock); -struct ipi_message { - unsigned long type; - struct smp_call_struct call_struct; -}; - /* A magic number - stress test shows this is safe for common cases */ #define BFIN_IPI_MSGQ_LEN 5 /* Simple FIFO buffer, overflow leads to panic */ -struct ipi_message_queue { - spinlock_t lock; +struct ipi_data { unsigned long count; - unsigned long head; /* head of the queue */ - struct ipi_message ipi_message[BFIN_IPI_MSGQ_LEN]; + unsigned long bits; }; -static DEFINE_PER_CPU(struct ipi_message_queue, ipi_msg_queue); +static DEFINE_PER_CPU(struct ipi_data, bfin_ipi); static void ipi_cpu_stop(unsigned int cpu) { @@ -129,28 +117,6 @@ static void ipi_flush_icache(void *info) blackfin_icache_flush_range(fdata->start, fdata->end); } -static void ipi_call_function(unsigned int cpu, struct ipi_message *msg) -{ - int wait; - void (*func)(void *info); - void *info; - func = msg->call_struct.func; - info = msg->call_struct.info; - wait = msg->call_struct.wait; - func(info); - if (wait) { -#ifdef __ARCH_SYNC_CORE_DCACHE - /* - * 'wait' usually means synchronization between CPUs. - * Invalidate D cache in case shared data was changed - * by func() to ensure cache coherence. - */ - resync_core_dcache(); -#endif - cpumask_clear_cpu(cpu, msg->call_struct.waitmask); - } -} - /* Use IRQ_SUPPLE_0 to request reschedule. * When returning from interrupt to user space, * there is chance to reschedule */ @@ -172,152 +138,95 @@ void ipi_timer(void) static irqreturn_t ipi_handler_int1(int irq, void *dev_instance) { - struct ipi_message *msg; - struct ipi_message_queue *msg_queue; + struct ipi_data *bfin_ipi_data; unsigned int cpu = smp_processor_id(); - unsigned long flags; + unsigned long pending; + unsigned long msg; platform_clear_ipi(cpu, IRQ_SUPPLE_1); - msg_queue = &__get_cpu_var(ipi_msg_queue); - - spin_lock_irqsave(&msg_queue->lock, flags); - - while (msg_queue->count) { - msg = &msg_queue->ipi_message[msg_queue->head]; - switch (msg->type) { - case BFIN_IPI_TIMER: - ipi_timer(); - break; - case BFIN_IPI_RESCHEDULE: - scheduler_ipi(); - break; - case BFIN_IPI_CALL_FUNC: - ipi_call_function(cpu, msg); - break; - case BFIN_IPI_CPU_STOP: - ipi_cpu_stop(cpu); - break; - default: - printk(KERN_CRIT "CPU%u: Unknown IPI message 0x%lx\n", - cpu, msg->type); - break; - } - msg_queue->head++; - msg_queue->head %= BFIN_IPI_MSGQ_LEN; - msg_queue->count--; + bfin_ipi_data = &__get_cpu_var(bfin_ipi); + + while ((pending = xchg(&bfin_ipi_data->bits, 0)) != 0) { + msg = 0; + do { + msg = find_next_bit(&pending, BITS_PER_LONG, msg + 1); + switch (msg) { + case BFIN_IPI_TIMER: + ipi_timer(); + break; + case BFIN_IPI_RESCHEDULE: + scheduler_ipi(); + break; + case BFIN_IPI_CALL_FUNC: + generic_smp_call_function_interrupt(); + break; + + case BFIN_IPI_CALL_FUNC_SINGLE: + generic_smp_call_function_single_interrupt(); + break; + + case BFIN_IPI_CPU_STOP: + ipi_cpu_stop(cpu); + break; + } + } while (msg < BITS_PER_LONG); + + smp_mb(); } - spin_unlock_irqrestore(&msg_queue->lock, flags); return IRQ_HANDLED; } -static void ipi_queue_init(void) +static void bfin_ipi_init(void) { unsigned int cpu; - struct ipi_message_queue *msg_queue; + struct ipi_data *bfin_ipi_data; for_each_possible_cpu(cpu) { - msg_queue = &per_cpu(ipi_msg_queue, cpu); - spin_lock_init(&msg_queue->lock); - msg_queue->count = 0; - msg_queue->head = 0; + bfin_ipi_data = &per_cpu(bfin_ipi, cpu); + bfin_ipi_data->bits = 0; + bfin_ipi_data->count = 0; } } -static inline void smp_send_message(cpumask_t callmap, unsigned long type, - void (*func) (void *info), void *info, int wait) +void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg) { unsigned int cpu; - struct ipi_message_queue *msg_queue; - struct ipi_message *msg; - unsigned long flags, next_msg; - cpumask_t waitmask; /* waitmask is shared by all cpus */ - - cpumask_copy(&waitmask, &callmap); - for_each_cpu(cpu, &callmap) { - msg_queue = &per_cpu(ipi_msg_queue, cpu); - spin_lock_irqsave(&msg_queue->lock, flags); - if (msg_queue->count < BFIN_IPI_MSGQ_LEN) { - next_msg = (msg_queue->head + msg_queue->count) - % BFIN_IPI_MSGQ_LEN; - msg = &msg_queue->ipi_message[next_msg]; - msg->type = type; - if (type == BFIN_IPI_CALL_FUNC) { - msg->call_struct.func = func; - msg->call_struct.info = info; - msg->call_struct.wait = wait; - msg->call_struct.waitmask = &waitmask; - } - msg_queue->count++; - } else - panic("IPI message queue overflow\n"); - spin_unlock_irqrestore(&msg_queue->lock, flags); + struct ipi_data *bfin_ipi_data; + unsigned long flags; + + local_irq_save(flags); + + for_each_cpu(cpu, cpumask) { + bfin_ipi_data = &per_cpu(bfin_ipi, cpu); + smp_mb(); + set_bit(msg, &bfin_ipi_data->bits); + bfin_ipi_data->count++; platform_send_ipi_cpu(cpu, IRQ_SUPPLE_1); } - if (wait) { - while (!cpumask_empty(&waitmask)) - blackfin_dcache_invalidate_range( - (unsigned long)(&waitmask), - (unsigned long)(&waitmask)); -#ifdef __ARCH_SYNC_CORE_DCACHE - /* - * Invalidate D cache in case shared data was changed by - * other processors to ensure cache coherence. - */ - resync_core_dcache(); -#endif - } + local_irq_restore(flags); } -int smp_call_function(void (*func)(void *info), void *info, int wait) +void arch_send_call_function_single_ipi(int cpu) { - cpumask_t callmap; - - preempt_disable(); - cpumask_copy(&callmap, cpu_online_mask); - cpumask_clear_cpu(smp_processor_id(), &callmap); - if (!cpumask_empty(&callmap)) - smp_send_message(callmap, BFIN_IPI_CALL_FUNC, func, info, wait); - - preempt_enable(); - - return 0; + send_ipi(cpumask_of(cpu), BFIN_IPI_CALL_FUNC_SINGLE); } -EXPORT_SYMBOL_GPL(smp_call_function); -int smp_call_function_single(int cpuid, void (*func) (void *info), void *info, - int wait) +void arch_send_call_function_ipi_mask(const struct cpumask *mask) { - unsigned int cpu = cpuid; - cpumask_t callmap; - - if (cpu_is_offline(cpu)) - return 0; - cpumask_clear(&callmap); - cpumask_set_cpu(cpu, &callmap); - - smp_send_message(callmap, BFIN_IPI_CALL_FUNC, func, info, wait); - - return 0; + send_ipi(mask, BFIN_IPI_CALL_FUNC); } -EXPORT_SYMBOL_GPL(smp_call_function_single); void smp_send_reschedule(int cpu) { - cpumask_t callmap; - /* simply trigger an ipi */ - - cpumask_clear(&callmap); - cpumask_set_cpu(cpu, &callmap); - - smp_send_message(callmap, BFIN_IPI_RESCHEDULE, NULL, NULL, 0); + send_ipi(cpumask_of(cpu), BFIN_IPI_RESCHEDULE); return; } void smp_send_msg(const struct cpumask *mask, unsigned long type) { - smp_send_message(*mask, type, NULL, NULL, 0); + send_ipi(mask, type); } void smp_timer_broadcast(const struct cpumask *mask) @@ -333,7 +242,7 @@ void smp_send_stop(void) cpumask_copy(&callmap, cpu_online_mask); cpumask_clear_cpu(smp_processor_id(), &callmap); if (!cpumask_empty(&callmap)) - smp_send_message(callmap, BFIN_IPI_CPU_STOP, NULL, NULL, 0); + send_ipi(&callmap, BFIN_IPI_CPU_STOP); preempt_enable(); @@ -436,7 +345,7 @@ void __init smp_prepare_boot_cpu(void) void __init smp_prepare_cpus(unsigned int max_cpus) { platform_prepare_cpus(max_cpus); - ipi_queue_init(); + bfin_ipi_init(); platform_request_ipi(IRQ_SUPPLE_0, ipi_handler_int0); platform_request_ipi(IRQ_SUPPLE_1, ipi_handler_int1); } diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index e498b18f010c..9fc9aa7ac703 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -318,7 +318,7 @@ static void pic_ioport_write(void *opaque, u32 addr, u32 val) if (val & 0x10) { u8 edge_irr = s->irr & ~s->elcr; int i; - bool found; + bool found = false; struct kvm_vcpu *vcpu; s->init4 = val & 1; diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index c00f03de1b79..b1eb202ee76a 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3619,6 +3619,7 @@ static void seg_setup(int seg) static int alloc_apic_access_page(struct kvm *kvm) { + struct page *page; struct kvm_userspace_memory_region kvm_userspace_mem; int r = 0; @@ -3633,7 +3634,13 @@ static int alloc_apic_access_page(struct kvm *kvm) if (r) goto out; - kvm->arch.apic_access_page = gfn_to_page(kvm, 0xfee00); + page = gfn_to_page(kvm, 0xfee00); + if (is_error_page(page)) { + r = -EFAULT; + goto out; + } + + kvm->arch.apic_access_page = page; out: mutex_unlock(&kvm->slots_lock); return r; @@ -3641,6 +3648,7 @@ out: static int alloc_identity_pagetable(struct kvm *kvm) { + struct page *page; struct kvm_userspace_memory_region kvm_userspace_mem; int r = 0; @@ -3656,8 +3664,13 @@ static int alloc_identity_pagetable(struct kvm *kvm) if (r) goto out; - kvm->arch.ept_identity_pagetable = gfn_to_page(kvm, - kvm->arch.ept_identity_map_addr >> PAGE_SHIFT); + page = gfn_to_page(kvm, kvm->arch.ept_identity_map_addr >> PAGE_SHIFT); + if (is_error_page(page)) { + r = -EFAULT; + goto out; + } + + kvm->arch.ept_identity_pagetable = page; out: mutex_unlock(&kvm->slots_lock); return r; @@ -6575,7 +6588,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu) /* Exposing INVPCID only when PCID is exposed */ best = kvm_find_cpuid_entry(vcpu, 0x7, 0); if (vmx_invpcid_supported() && - best && (best->ecx & bit(X86_FEATURE_INVPCID)) && + best && (best->ebx & bit(X86_FEATURE_INVPCID)) && guest_cpuid_has_pcid(vcpu)) { exec_control |= SECONDARY_EXEC_ENABLE_INVPCID; vmcs_write32(SECONDARY_VM_EXEC_CONTROL, @@ -6585,7 +6598,7 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu) vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control); if (best) - best->ecx &= ~bit(X86_FEATURE_INVPCID); + best->ebx &= ~bit(X86_FEATURE_INVPCID); } } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 148ed666e311..2966c847d489 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5113,17 +5113,20 @@ static void post_kvm_run_save(struct kvm_vcpu *vcpu) !kvm_event_needs_reinjection(vcpu); } -static void vapic_enter(struct kvm_vcpu *vcpu) +static int vapic_enter(struct kvm_vcpu *vcpu) { struct kvm_lapic *apic = vcpu->arch.apic; struct page *page; if (!apic || !apic->vapic_addr) - return; + return 0; page = gfn_to_page(vcpu->kvm, apic->vapic_addr >> PAGE_SHIFT); + if (is_error_page(page)) + return -EFAULT; vcpu->arch.apic->vapic_page = page; + return 0; } static void vapic_exit(struct kvm_vcpu *vcpu) @@ -5430,7 +5433,11 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) } vcpu->srcu_idx = srcu_read_lock(&kvm->srcu); - vapic_enter(vcpu); + r = vapic_enter(vcpu); + if (r) { + srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx); + return r; + } r = 1; while (r > 0) { diff --git a/crypto/authenc.c b/crypto/authenc.c index 5ef7ba6b6a76..d0583a4489e6 100644 --- a/crypto/authenc.c +++ b/crypto/authenc.c @@ -336,7 +336,7 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv, cryptlen += ivsize; } - if (sg_is_last(assoc)) { + if (req->assoclen && sg_is_last(assoc)) { authenc_ahash_fn = crypto_authenc_ahash; sg_init_table(asg, 2); sg_set_page(asg, sg_page(assoc), assoc->length, assoc->offset); @@ -490,7 +490,7 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv, cryptlen += ivsize; } - if (sg_is_last(assoc)) { + if (req->assoclen && sg_is_last(assoc)) { authenc_ahash_fn = crypto_authenc_ahash; sg_init_table(asg, 2); sg_set_page(asg, sg_page(assoc), assoc->length, assoc->offset); diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 50d5dea0ff59..7862d17976b7 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -268,6 +268,9 @@ static const struct pci_device_id ahci_pci_tbl[] = { /* JMicron 360/1/3/5/6, match class to avoid IDE function */ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr }, + /* JMicron 362B and 362C have an AHCI function with IDE class code */ + { PCI_VDEVICE(JMICRON, 0x2362), board_ahci_ign_iferr }, + { PCI_VDEVICE(JMICRON, 0x236f), board_ahci_ign_iferr }, /* ATI */ { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */ @@ -393,6 +396,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { .driver_data = board_ahci_yes_fbs }, /* 88se9125 */ { PCI_DEVICE(0x1b4b, 0x917a), .driver_data = board_ahci_yes_fbs }, /* 88se9172 */ + { PCI_DEVICE(0x1b4b, 0x9192), + .driver_data = board_ahci_yes_fbs }, /* 88se9172 on some Gigabyte */ { PCI_DEVICE(0x1b4b, 0x91a3), .driver_data = board_ahci_yes_fbs }, @@ -400,7 +405,10 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */ /* Asmedia */ - { PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1061 */ + { PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci }, /* ASM1060 */ + { PCI_VDEVICE(ASMEDIA, 0x0602), board_ahci }, /* ASM1060 */ + { PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci }, /* ASM1061 */ + { PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1062 */ /* Generic, PCI class code for AHCI */ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c index 002888185f17..d216cd3cc569 100644 --- a/drivers/crypto/caam/key_gen.c +++ b/drivers/crypto/caam/key_gen.c @@ -120,3 +120,4 @@ u32 gen_split_key(struct device *jrdev, u8 *key_out, int split_key_len, return ret; } +EXPORT_SYMBOL(gen_split_key); diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c index d0c4574ef49c..36164806b9d4 100644 --- a/drivers/gpu/drm/ast/ast_drv.c +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -193,6 +193,9 @@ static const struct file_operations ast_fops = { .mmap = ast_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .read = drm_read, }; diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 7282c081fb53..a712cafcfa1d 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -841,7 +841,7 @@ int ast_cursor_init(struct drm_device *dev) ast->cursor_cache = obj; ast->cursor_cache_gpu_addr = gpu_addr; - DRM_ERROR("pinned cursor cache at %llx\n", ast->cursor_cache_gpu_addr); + DRM_DEBUG_KMS("pinned cursor cache at %llx\n", ast->cursor_cache_gpu_addr); return 0; fail: return ret; diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c index 7053140c6596..b83a2d7ddd1a 100644 --- a/drivers/gpu/drm/cirrus/cirrus_drv.c +++ b/drivers/gpu/drm/cirrus/cirrus_drv.c @@ -74,6 +74,9 @@ static const struct file_operations cirrus_driver_fops = { .unlocked_ioctl = drm_ioctl, .mmap = cirrus_mmap, .poll = drm_poll, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .fasync = drm_fasync, }; static struct drm_driver driver = { diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index ebacec6f1e48..6345abe9fdee 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -241,6 +241,9 @@ static const struct file_operations exynos_drm_driver_fops = { .poll = drm_poll, .read = drm_read, .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .release = drm_release, }; diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index 57d892eaaa6e..463ec6871fe9 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -115,6 +115,9 @@ static const struct file_operations i810_buffer_fops = { .unlocked_ioctl = drm_ioctl, .mmap = i810_mmap_buffers, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/i810/i810_drv.c b/drivers/gpu/drm/i810/i810_drv.c index f9924ad04d09..48cfcca2b350 100644 --- a/drivers/gpu/drm/i810/i810_drv.c +++ b/drivers/gpu/drm/i810/i810_drv.c @@ -51,6 +51,9 @@ static const struct file_operations i810_driver_fops = { .mmap = drm_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index ea1024d79974..e5f145d2cb3b 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -84,6 +84,9 @@ static const struct file_operations mgag200_driver_fops = { .mmap = mgag200_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .read = drm_read, }; diff --git a/drivers/gpu/drm/nouveau/nv50_gpio.c b/drivers/gpu/drm/nouveau/nv50_gpio.c index f429e6a8ca7a..f03490534893 100644 --- a/drivers/gpu/drm/nouveau/nv50_gpio.c +++ b/drivers/gpu/drm/nouveau/nv50_gpio.c @@ -115,6 +115,9 @@ nv50_gpio_init(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; + /* initialise gpios and routing to vbios defaults */ + nouveau_gpio_reset(dev); + /* disable, and ack any pending gpio interrupts */ nv_wr32(dev, 0xe050, 0x00000000); nv_wr32(dev, 0xe054, 0xffffffff); diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c index dac525b2994e..8a2fc89b7763 100644 --- a/drivers/gpu/drm/nouveau/nvd0_display.c +++ b/drivers/gpu/drm/nouveau/nvd0_display.c @@ -1510,10 +1510,10 @@ nvd0_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode, case OUTPUT_DP: if (nv_connector->base.display_info.bpc == 6) { nv_encoder->dp.datarate = mode->clock * 18 / 8; - syncs |= 0x00000140; + syncs |= 0x00000002 << 6; } else { nv_encoder->dp.datarate = mode->clock * 24 / 8; - syncs |= 0x00000180; + syncs |= 0x00000005 << 6; } if (nv_encoder->dcb->sorconf.link & 1) diff --git a/drivers/gpu/drm/savage/savage_drv.c b/drivers/gpu/drm/savage/savage_drv.c index d31d4cca9a4c..c5a164337bd5 100644 --- a/drivers/gpu/drm/savage/savage_drv.c +++ b/drivers/gpu/drm/savage/savage_drv.c @@ -43,6 +43,9 @@ static const struct file_operations savage_driver_fops = { .mmap = drm_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c index 7f119870147c..867dc03000e6 100644 --- a/drivers/gpu/drm/sis/sis_drv.c +++ b/drivers/gpu/drm/sis/sis_drv.c @@ -74,6 +74,9 @@ static const struct file_operations sis_driver_fops = { .mmap = drm_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/tdfx/tdfx_drv.c b/drivers/gpu/drm/tdfx/tdfx_drv.c index 90f6b13acfac..a7f4d6bd1330 100644 --- a/drivers/gpu/drm/tdfx/tdfx_drv.c +++ b/drivers/gpu/drm/tdfx/tdfx_drv.c @@ -49,6 +49,9 @@ static const struct file_operations tdfx_driver_fops = { .mmap = drm_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 6e52069894b3..9f84128505bb 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -66,6 +66,9 @@ static const struct file_operations udl_driver_fops = { .unlocked_ioctl = drm_ioctl, .release = drm_release, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/via/via_drv.c b/drivers/gpu/drm/via/via_drv.c index e927b4c052f5..af1b914b17e3 100644 --- a/drivers/gpu/drm/via/via_drv.c +++ b/drivers/gpu/drm/via/via_drv.c @@ -65,6 +65,9 @@ static const struct file_operations via_driver_fops = { .mmap = drm_mmap, .poll = drm_poll, .fasync = drm_fasync, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif .llseek = noop_llseek, }; diff --git a/drivers/gpu/drm/vmwgfx/Kconfig b/drivers/gpu/drm/vmwgfx/Kconfig index 794ff67c5701..b71bcd0bfbbf 100644 --- a/drivers/gpu/drm/vmwgfx/Kconfig +++ b/drivers/gpu/drm/vmwgfx/Kconfig @@ -12,3 +12,11 @@ config DRM_VMWGFX This is a KMS enabled DRM driver for the VMware SVGA2 virtual hardware. The compiled module will be called "vmwgfx.ko". + +config DRM_VMWGFX_FBCON + depends on DRM_VMWGFX + bool "Enable framebuffer console under vmwgfx by default" + help + Choose this option if you are shipping a new vmwgfx + userspace driver that supports using the kernel driver. + diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 4d9edead01ac..33bfc2033009 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -182,8 +182,9 @@ static struct pci_device_id vmw_pci_id_list[] = { {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII}, {0, 0, 0} }; +MODULE_DEVICE_TABLE(pci, vmw_pci_id_list); -static int enable_fbdev; +static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON); static int vmw_probe(struct pci_dev *, const struct pci_device_id *); static void vmw_master_init(struct vmw_master *); diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index b4aaa1bd6728..970a1612e795 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -104,6 +104,7 @@ config I2C_I801 DH89xxCC (PCH) Panther Point (PCH) Lynx Point (PCH) + Lynx Point-LP (PCH) This driver can also be built as a module. If so, the module will be called i2c-i801. @@ -354,9 +355,13 @@ config I2C_DAVINCI devices such as DaVinci NIC. For details please see http://www.ti.com/davinci +config I2C_DESIGNWARE_CORE + tristate + config I2C_DESIGNWARE_PLATFORM tristate "Synopsys DesignWare Platform" depends on HAVE_CLK + select I2C_DESIGNWARE_CORE help If you say yes to this option, support will be included for the Synopsys DesignWare I2C adapter. Only master mode is supported. @@ -367,6 +372,7 @@ config I2C_DESIGNWARE_PLATFORM config I2C_DESIGNWARE_PCI tristate "Synopsys DesignWare PCI" depends on PCI + select I2C_DESIGNWARE_CORE help If you say yes to this option, support will be included for the Synopsys DesignWare I2C adapter. Only master mode is supported. diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile index ce3c2be7fb40..37c4182cc98b 100644 --- a/drivers/i2c/busses/Makefile +++ b/drivers/i2c/busses/Makefile @@ -33,10 +33,11 @@ obj-$(CONFIG_I2C_AU1550) += i2c-au1550.o obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bfin-twi.o obj-$(CONFIG_I2C_CPM) += i2c-cpm.o obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o +obj-$(CONFIG_I2C_DESIGNWARE_CORE) += i2c-designware-core.o obj-$(CONFIG_I2C_DESIGNWARE_PLATFORM) += i2c-designware-platform.o -i2c-designware-platform-objs := i2c-designware-platdrv.o i2c-designware-core.o +i2c-designware-platform-objs := i2c-designware-platdrv.o obj-$(CONFIG_I2C_DESIGNWARE_PCI) += i2c-designware-pci.o -i2c-designware-pci-objs := i2c-designware-pcidrv.o i2c-designware-core.o +i2c-designware-pci-objs := i2c-designware-pcidrv.o obj-$(CONFIG_I2C_EG20T) += i2c-eg20t.o obj-$(CONFIG_I2C_GPIO) += i2c-gpio.o obj-$(CONFIG_I2C_HIGHLANDER) += i2c-highlander.o diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 1e48bec80edf..7b8ebbefb581 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -25,6 +25,7 @@ * ---------------------------------------------------------------------------- * */ +#include <linux/export.h> #include <linux/clk.h> #include <linux/errno.h> #include <linux/err.h> @@ -316,6 +317,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev) dw_writel(dev, dev->master_cfg , DW_IC_CON); return 0; } +EXPORT_SYMBOL_GPL(i2c_dw_init); /* * Waiting for bus not busy @@ -568,12 +570,14 @@ done: return ret; } +EXPORT_SYMBOL_GPL(i2c_dw_xfer); u32 i2c_dw_func(struct i2c_adapter *adap) { struct dw_i2c_dev *dev = i2c_get_adapdata(adap); return dev->functionality; } +EXPORT_SYMBOL_GPL(i2c_dw_func); static u32 i2c_dw_read_clear_intrbits(struct dw_i2c_dev *dev) { @@ -678,17 +682,20 @@ tx_aborted: return IRQ_HANDLED; } +EXPORT_SYMBOL_GPL(i2c_dw_isr); void i2c_dw_enable(struct dw_i2c_dev *dev) { /* Enable the adapter */ dw_writel(dev, 1, DW_IC_ENABLE); } +EXPORT_SYMBOL_GPL(i2c_dw_enable); u32 i2c_dw_is_enabled(struct dw_i2c_dev *dev) { return dw_readl(dev, DW_IC_ENABLE); } +EXPORT_SYMBOL_GPL(i2c_dw_is_enabled); void i2c_dw_disable(struct dw_i2c_dev *dev) { @@ -699,18 +706,22 @@ void i2c_dw_disable(struct dw_i2c_dev *dev) dw_writel(dev, 0, DW_IC_INTR_MASK); dw_readl(dev, DW_IC_CLR_INTR); } +EXPORT_SYMBOL_GPL(i2c_dw_disable); void i2c_dw_clear_int(struct dw_i2c_dev *dev) { dw_readl(dev, DW_IC_CLR_INTR); } +EXPORT_SYMBOL_GPL(i2c_dw_clear_int); void i2c_dw_disable_int(struct dw_i2c_dev *dev) { dw_writel(dev, 0, DW_IC_INTR_MASK); } +EXPORT_SYMBOL_GPL(i2c_dw_disable_int); u32 i2c_dw_read_comp_param(struct dw_i2c_dev *dev) { return dw_readl(dev, DW_IC_COMP_PARAM_1); } +EXPORT_SYMBOL_GPL(i2c_dw_read_comp_param); diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 898dcf9c7ade..33e9b0c09af2 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -52,6 +52,7 @@ DH89xxCC (PCH) 0x2330 32 hard yes yes yes Panther Point (PCH) 0x1e22 32 hard yes yes yes Lynx Point (PCH) 0x8c22 32 hard yes yes yes + Lynx Point-LP (PCH) 0x9c22 32 hard yes yes yes Features supported by this driver: Software PEC no @@ -155,6 +156,7 @@ #define PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS 0x2330 #define PCI_DEVICE_ID_INTEL_5_3400_SERIES_SMBUS 0x3b30 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_SMBUS 0x8c22 +#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_SMBUS 0x9c22 struct i801_priv { struct i2c_adapter adapter; @@ -771,6 +773,7 @@ static DEFINE_PCI_DEVICE_TABLE(i801_ids) = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PANTHERPOINT_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LYNXPOINT_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_SMBUS) }, { 0, } }; diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 2efa56c5ff2c..2091ae8f539a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -637,6 +637,22 @@ static void i2c_adapter_dev_release(struct device *dev) } /* + * This function is only needed for mutex_lock_nested, so it is never + * called unless locking correctness checking is enabled. Thus we + * make it inline to avoid a compiler warning. That's what gcc ends up + * doing anyway. + */ +static inline unsigned int i2c_adapter_depth(struct i2c_adapter *adapter) +{ + unsigned int depth = 0; + + while ((adapter = i2c_parent_is_i2c_adapter(adapter))) + depth++; + + return depth; +} + +/* * Let users instantiate I2C devices through sysfs. This can be used when * platform initialization code doesn't contain the proper data for * whatever reason. Also useful for drivers that do device detection and @@ -726,7 +742,8 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr, /* Make sure the device was added through sysfs */ res = -ENOENT; - mutex_lock(&adap->userspace_clients_lock); + mutex_lock_nested(&adap->userspace_clients_lock, + i2c_adapter_depth(adap)); list_for_each_entry_safe(client, next, &adap->userspace_clients, detected) { if (client->addr == addr) { @@ -1073,7 +1090,8 @@ int i2c_del_adapter(struct i2c_adapter *adap) return res; /* Remove devices instantiated from sysfs */ - mutex_lock(&adap->userspace_clients_lock); + mutex_lock_nested(&adap->userspace_clients_lock, + i2c_adapter_depth(adap)); list_for_each_entry_safe(client, next, &adap->userspace_clients, detected) { dev_dbg(&adap->dev, "Removing %s at 0x%x\n", client->name, diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index dc27598785e5..ed38454228c6 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -4066,7 +4066,6 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) spin_lock_init(&instance->cmd_pool_lock); spin_lock_init(&instance->hba_lock); spin_lock_init(&instance->completion_lock); - spin_lock_init(&poll_aen_lock); mutex_init(&instance->aen_mutex); mutex_init(&instance->reset_mutex); @@ -5392,6 +5391,8 @@ static int __init megasas_init(void) printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, MEGASAS_EXT_VERSION); + spin_lock_init(&poll_aen_lock); + support_poll_for_event = 2; support_device_change = 1; diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c index 9d46fcbe7755..b25757d1e91b 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.c +++ b/drivers/scsi/mpt2sas/mpt2sas_base.c @@ -2424,10 +2424,13 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag) } /* command line tunables for max controller queue depth */ - if (max_queue_depth != -1) - max_request_credit = (max_queue_depth < facts->RequestCredit) - ? max_queue_depth : facts->RequestCredit; - else + if (max_queue_depth != -1 && max_queue_depth != 0) { + max_request_credit = min_t(u16, max_queue_depth + + ioc->hi_priority_depth + ioc->internal_depth, + facts->RequestCredit); + if (max_request_credit > MAX_HBA_QUEUE_DEPTH) + max_request_credit = MAX_HBA_QUEUE_DEPTH; + } else max_request_credit = min_t(u16, facts->RequestCredit, MAX_HBA_QUEUE_DEPTH); @@ -2502,7 +2505,7 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag) /* set the scsi host can_queue depth * with some internal commands that could be outstanding */ - ioc->shost->can_queue = ioc->scsiio_depth - (2); + ioc->shost->can_queue = ioc->scsiio_depth; dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: " "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue)); diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 4a6381c87253..de2337f255a7 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -42,6 +42,8 @@ #include <trace/events/scsi.h> +static void scsi_eh_done(struct scsi_cmnd *scmd); + #define SENSE_TIMEOUT (10*HZ) /* @@ -241,6 +243,14 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) if (! scsi_command_normalize_sense(scmd, &sshdr)) return FAILED; /* no valid sense data */ + if (scmd->cmnd[0] == TEST_UNIT_READY && scmd->scsi_done != scsi_eh_done) + /* + * nasty: for mid-layer issued TURs, we need to return the + * actual sense data without any recovery attempt. For eh + * issued ones, we need to try to recover and interpret + */ + return SUCCESS; + if (scsi_sense_is_deferred(&sshdr)) return NEEDS_RETRY; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index ffd77739ae3e..faa790fba134 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -776,7 +776,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) } if (req->cmd_type == REQ_TYPE_BLOCK_PC) { /* SG_IO ioctl from block level */ - req->errors = result; if (result) { if (sense_valid && req->sense) { /* @@ -792,6 +791,10 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) if (!sense_deferred) error = __scsi_error_from_host_byte(cmd, result); } + /* + * __scsi_error_from_host_byte may have reset the host_byte + */ + req->errors = cmd->result; req->resid_len = scsi_get_resid(cmd); diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 56a93794c470..d947ffc20ceb 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -764,6 +764,16 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, sdev->model = (char *) (sdev->inquiry + 16); sdev->rev = (char *) (sdev->inquiry + 32); + if (strncmp(sdev->vendor, "ATA ", 8) == 0) { + /* + * sata emulation layer device. This is a hack to work around + * the SATL power management specifications which state that + * when the SATL detects the device has gone into standby + * mode, it shall respond with NOT READY. + */ + sdev->allow_restart = 1; + } + if (*bflags & BLIST_ISROM) { sdev->type = TYPE_ROM; sdev->removable = 1; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 9154192b0683..71e9ad9f5961 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -917,7 +917,7 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile) if (!buf) { mutex_unlock(&cinode->lock_mutex); free_xid(xid); - return rc; + return -ENOMEM; } for (i = 0; i < 2; i++) { diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index c5fbfac5d576..15dc8eea8273 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -96,7 +96,7 @@ * */ -#define SMB2_HEADER_STRUCTURE_SIZE __constant_le16_to_cpu(64) +#define SMB2_HEADER_STRUCTURE_SIZE __constant_cpu_to_le16(64) struct smb2_hdr { __be32 smb2_buf_length; /* big endian on wire */ @@ -140,7 +140,7 @@ struct smb2_pdu { * */ -#define SMB2_ERROR_STRUCTURE_SIZE2 __constant_le16_to_cpu(9) +#define SMB2_ERROR_STRUCTURE_SIZE2 __constant_cpu_to_le16(9) struct smb2_err_rsp { struct smb2_hdr hdr; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index a07597307fd1..ff574b4e345e 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -3072,6 +3072,8 @@ static int ext3_do_update_inode(handle_t *handle, struct ext3_inode_info *ei = EXT3_I(inode); struct buffer_head *bh = iloc->bh; int err = 0, rc, block; + int need_datasync = 0; + __le32 disksize; uid_t i_uid; gid_t i_gid; @@ -3113,7 +3115,11 @@ again: raw_inode->i_gid_high = 0; } raw_inode->i_links_count = cpu_to_le16(inode->i_nlink); - raw_inode->i_size = cpu_to_le32(ei->i_disksize); + disksize = cpu_to_le32(ei->i_disksize); + if (disksize != raw_inode->i_size) { + need_datasync = 1; + raw_inode->i_size = disksize; + } raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec); raw_inode->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec); raw_inode->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec); @@ -3129,8 +3135,11 @@ again: if (!S_ISREG(inode->i_mode)) { raw_inode->i_dir_acl = cpu_to_le32(ei->i_dir_acl); } else { - raw_inode->i_size_high = - cpu_to_le32(ei->i_disksize >> 32); + disksize = cpu_to_le32(ei->i_disksize >> 32); + if (disksize != raw_inode->i_size_high) { + raw_inode->i_size_high = disksize; + need_datasync = 1; + } if (ei->i_disksize > 0x7fffffffULL) { struct super_block *sb = inode->i_sb; if (!EXT3_HAS_RO_COMPAT_FEATURE(sb, @@ -3183,6 +3192,8 @@ again: ext3_clear_inode_state(inode, EXT3_STATE_NEW); atomic_set(&ei->i_sync_tid, handle->h_transaction->t_tid); + if (need_datasync) + atomic_set(&ei->i_datasync_tid, handle->h_transaction->t_tid); out_brelse: brelse (bh); ext3_std_error(inode->i_sb, err); diff --git a/fs/fuse/control.c b/fs/fuse/control.c index 03ff5b1eba93..75a20c092dd4 100644 --- a/fs/fuse/control.c +++ b/fs/fuse/control.c @@ -117,7 +117,7 @@ static ssize_t fuse_conn_max_background_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - unsigned val; + unsigned uninitialized_var(val); ssize_t ret; ret = fuse_conn_limit_write(file, buf, count, ppos, &val, @@ -154,7 +154,7 @@ static ssize_t fuse_conn_congestion_threshold_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - unsigned val; + unsigned uninitialized_var(val); ssize_t ret; ret = fuse_conn_limit_write(file, buf, count, ppos, &val, diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 3426521f3205..ee8d55042298 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -396,7 +396,7 @@ err_device: err_region: unregister_chrdev_region(devt, 1); err: - fc->conn_error = 1; + fuse_conn_kill(fc); goto out; } @@ -532,8 +532,6 @@ static int cuse_channel_release(struct inode *inode, struct file *file) cdev_del(cc->cdev); } - /* kill connection and shutdown channel */ - fuse_conn_kill(&cc->fc); rc = fuse_dev_release(inode, file); /* puts the base reference */ return rc; diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 7df2b5e8fbe1..f4246cfc8d87 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1576,6 +1576,7 @@ static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode, req->pages[req->num_pages] = page; req->num_pages++; + offset = 0; num -= this_num; total_len += this_num; index++; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index ce0a2838ccd0..fca222dabe3c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -367,11 +367,6 @@ void fuse_conn_kill(struct fuse_conn *fc) wake_up_all(&fc->waitq); wake_up_all(&fc->blocked_waitq); wake_up_all(&fc->reserved_req_waitq); - mutex_lock(&fuse_mutex); - list_del(&fc->entry); - fuse_ctl_remove_conn(fc); - mutex_unlock(&fuse_mutex); - fuse_bdi_destroy(fc); } EXPORT_SYMBOL_GPL(fuse_conn_kill); @@ -380,7 +375,14 @@ static void fuse_put_super(struct super_block *sb) struct fuse_conn *fc = get_fuse_conn_super(sb); fuse_send_destroy(fc); + fuse_conn_kill(fc); + mutex_lock(&fuse_mutex); + list_del(&fc->entry); + fuse_ctl_remove_conn(fc); + mutex_unlock(&fuse_mutex); + fuse_bdi_destroy(fc); + fuse_conn_put(fc); } diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 75d6d0a3d32e..6a7fcab7ecb3 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -287,10 +287,12 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_path.dentry->d_inode; ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (ret != 0) + goto out; mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); mutex_unlock(&inode->i_mutex); - +out: return ret; } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index c6e895f0fbf3..9b47610338f5 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -154,7 +154,7 @@ static void nfs_zap_caches_locked(struct inode *inode) nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); nfsi->attrtimeo_timestamp = jiffies; - memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode))); + memset(NFS_I(inode)->cookieverf, 0, sizeof(NFS_I(inode)->cookieverf)); if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE; else diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index d6b3b5f2d779..69322096c325 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -643,7 +643,7 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, u64 cookie, struct page **pages, unsigned int count, int plus) { struct inode *dir = dentry->d_inode; - __be32 *verf = NFS_COOKIEVERF(dir); + __be32 *verf = NFS_I(dir)->cookieverf; struct nfs3_readdirargs arg = { .fh = NFS_FH(dir), .cookie = cookie, diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index acb65e7887f8..eb5eb8eef4d3 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -96,13 +96,15 @@ nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_path.dentry->d_inode; ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (ret != 0) + goto out; mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); if (!ret && !datasync) /* application has asked for meta-data sync */ ret = pnfs_layoutcommit_inode(inode, true); mutex_unlock(&inode->i_mutex); - +out: return ret; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 635274140b18..1e50326d00dd 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3215,11 +3215,11 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, dentry->d_parent->d_name.name, dentry->d_name.name, (unsigned long long)cookie); - nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); + nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); res.pgbase = args.pgbase; status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); if (status >= 0) { - memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); + memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); status += args.pgbase; } @@ -3653,11 +3653,11 @@ static inline int nfs4_server_supports_acls(struct nfs_server *server) && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); } -/* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that - * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on +/* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that + * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on * the stack. */ -#define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) +#define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) static int buf_to_pages_noslab(const void *buf, size_t buflen, struct page **pages, unsigned int *pgbase) @@ -3668,7 +3668,7 @@ static int buf_to_pages_noslab(const void *buf, size_t buflen, spages = pages; do { - len = min_t(size_t, PAGE_CACHE_SIZE, buflen); + len = min_t(size_t, PAGE_SIZE, buflen); newpage = alloc_page(GFP_KERNEL); if (newpage == NULL) @@ -3739,7 +3739,7 @@ static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size struct nfs4_cached_acl *acl; size_t buflen = sizeof(*acl) + acl_len; - if (pages && buflen <= PAGE_SIZE) { + if (buflen <= PAGE_SIZE) { acl = kmalloc(buflen, GFP_KERNEL); if (acl == NULL) goto out; @@ -3782,17 +3782,15 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu .rpc_argp = &args, .rpc_resp = &res, }; - int ret = -ENOMEM, npages, i; - size_t acl_len = 0; + unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); + int ret = -ENOMEM, i; - npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; /* As long as we're doing a round trip to the server anyway, * let's be prepared for a page of acl data. */ if (npages == 0) npages = 1; - - /* Add an extra page to handle the bitmap returned */ - npages++; + if (npages > ARRAY_SIZE(pages)) + return -ERANGE; for (i = 0; i < npages; i++) { pages[i] = alloc_page(GFP_KERNEL); @@ -3808,11 +3806,6 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu args.acl_len = npages * PAGE_SIZE; args.acl_pgbase = 0; - /* Let decode_getfacl know not to fail if the ACL data is larger than - * the page we send as a guess */ - if (buf == NULL) - res.acl_flags |= NFS4_ACL_LEN_REQUEST; - dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", __func__, buf, buflen, npages, args.acl_len); ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), @@ -3820,20 +3813,19 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu if (ret) goto out_free; - acl_len = res.acl_len; - if (acl_len > args.acl_len) - nfs4_write_cached_acl(inode, NULL, 0, acl_len); - else - nfs4_write_cached_acl(inode, pages, res.acl_data_offset, - acl_len); - if (buf) { + /* Handle the case where the passed-in buffer is too short */ + if (res.acl_flags & NFS4_ACL_TRUNC) { + /* Did the user only issue a request for the acl length? */ + if (buf == NULL) + goto out_ok; ret = -ERANGE; - if (acl_len > buflen) - goto out_free; - _copy_from_pages(buf, pages, res.acl_data_offset, - acl_len); + goto out_free; } - ret = acl_len; + nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); + if (buf) + _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); +out_ok: + ret = res.acl_len; out_free: for (i = 0; i < npages; i++) if (pages[i]) @@ -3891,10 +3883,13 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl .rpc_argp = &arg, .rpc_resp = &res, }; + unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); int ret, i; if (!nfs4_server_supports_acls(server)) return -EOPNOTSUPP; + if (npages > ARRAY_SIZE(pages)) + return -ERANGE; i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); if (i < 0) return i; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 1bfbd67c556d..8dba6bd48557 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -5072,18 +5072,14 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, * are stored with the acl data to handle the problem of * variable length bitmaps.*/ res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset; - - /* We ignore &savep and don't do consistency checks on - * the attr length. Let userspace figure it out.... */ res->acl_len = attrlen; - if (attrlen > (xdr->nwords << 2)) { - if (res->acl_flags & NFS4_ACL_LEN_REQUEST) { - /* getxattr interface called with a NULL buf */ - goto out; - } + + /* Check for receive buffer overflow */ + if (res->acl_len > (xdr->nwords << 2) || + res->acl_len + res->acl_data_offset > xdr->buf->page_len) { + res->acl_flags |= NFS4_ACL_TRUNC; dprintk("NFS: acl reply: attrlen %u > page_len %u\n", attrlen, xdr->nwords << 2); - return -EINVAL; } } else status = -EOPNOTSUPP; @@ -6229,7 +6225,8 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, status = decode_open(xdr, res); if (status) goto out; - if (decode_getfh(xdr, &res->fh) != 0) + status = decode_getfh(xdr, &res->fh); + if (status) goto out; decode_getfattr(xdr, res->f_attr, res->server); out: diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 239aff7338eb..b8eda700584b 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1867,6 +1867,7 @@ static int nfs23_validate_mount_data(void *options, memcpy(sap, &data->addr, sizeof(data->addr)); args->nfs_server.addrlen = sizeof(data->addr); + args->nfs_server.port = ntohs(data->addr.sin_port); if (!nfs_verify_server_address(sap)) goto out_no_address; @@ -2564,6 +2565,7 @@ static int nfs4_validate_mount_data(void *options, return -EFAULT; if (!nfs_verify_server_address(sap)) goto out_no_address; + args->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port); if (data->auth_flavourlen) { if (data->auth_flavourlen > 1) diff --git a/fs/udf/file.c b/fs/udf/file.c index 7f3f7ba3df6e..d1c6093fd3d3 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -39,20 +39,24 @@ #include "udf_i.h" #include "udf_sb.h" -static int udf_adinicb_readpage(struct file *file, struct page *page) +static void __udf_adinicb_readpage(struct page *page) { struct inode *inode = page->mapping->host; char *kaddr; struct udf_inode_info *iinfo = UDF_I(inode); - BUG_ON(!PageLocked(page)); - kaddr = kmap(page); - memset(kaddr, 0, PAGE_CACHE_SIZE); memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, inode->i_size); + memset(kaddr + inode->i_size, 0, PAGE_CACHE_SIZE - inode->i_size); flush_dcache_page(page); SetPageUptodate(page); kunmap(page); +} + +static int udf_adinicb_readpage(struct file *file, struct page *page) +{ + BUG_ON(!PageLocked(page)); + __udf_adinicb_readpage(page); unlock_page(page); return 0; @@ -77,6 +81,25 @@ static int udf_adinicb_writepage(struct page *page, return 0; } +static int udf_adinicb_write_begin(struct file *file, + struct address_space *mapping, loff_t pos, + unsigned len, unsigned flags, struct page **pagep, + void **fsdata) +{ + struct page *page; + + if (WARN_ON_ONCE(pos >= PAGE_CACHE_SIZE)) + return -EIO; + page = grab_cache_page_write_begin(mapping, 0, flags); + if (!page) + return -ENOMEM; + *pagep = page; + + if (!PageUptodate(page) && len != PAGE_CACHE_SIZE) + __udf_adinicb_readpage(page); + return 0; +} + static int udf_adinicb_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, @@ -98,8 +121,8 @@ static int udf_adinicb_write_end(struct file *file, const struct address_space_operations udf_adinicb_aops = { .readpage = udf_adinicb_readpage, .writepage = udf_adinicb_writepage, - .write_begin = simple_write_begin, - .write_end = udf_adinicb_write_end, + .write_begin = udf_adinicb_write_begin, + .write_end = udf_adinicb_write_end, }; static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 1f8fc7f9bcd8..4b03f56e280e 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -265,11 +265,6 @@ static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) return NFS_SERVER(inode)->nfs_client->rpc_ops; } -static inline __be32 *NFS_COOKIEVERF(const struct inode *inode) -{ - return NFS_I(inode)->cookieverf; -} - static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) { struct nfs_server *nfss = NFS_SERVER(inode); diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ac7c8ae254f2..be9cf3c7e79e 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -652,7 +652,7 @@ struct nfs_getaclargs { }; /* getxattr ACL interface flags */ -#define NFS4_ACL_LEN_REQUEST 0x0001 /* zero length getxattr buffer */ +#define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */ struct nfs_getaclres { size_t acl_len; size_t acl_data_offset; diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index cff40aa7db62..bf8c49ff7530 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -114,6 +114,7 @@ struct rpc_xprt_ops { void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize); int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); + void (*alloc_slot)(struct rpc_xprt *xprt, struct rpc_task *task); void (*rpcbind)(struct rpc_task *task); void (*set_port)(struct rpc_xprt *xprt, unsigned short port); void (*connect)(struct rpc_task *task); @@ -281,6 +282,8 @@ void xprt_connect(struct rpc_task *task); void xprt_reserve(struct rpc_task *task); int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task); int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); +void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); +void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); int xprt_prepare_transmit(struct rpc_task *task); void xprt_transmit(struct rpc_task *task); void xprt_end_transmit(struct rpc_task *task); diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 692d97628a10..1e1373bcb3e3 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -66,6 +66,7 @@ enum { /* pool flags */ POOL_MANAGE_WORKERS = 1 << 0, /* need to manage workers */ + POOL_MANAGING_WORKERS = 1 << 1, /* managing workers */ /* worker flags */ WORKER_STARTED = 1 << 0, /* started */ @@ -652,7 +653,7 @@ static bool need_to_manage_workers(struct worker_pool *pool) /* Do we have too many workers and should some go away? */ static bool too_many_workers(struct worker_pool *pool) { - bool managing = mutex_is_locked(&pool->manager_mutex); + bool managing = pool->flags & POOL_MANAGING_WORKERS; int nr_idle = pool->nr_idle + managing; /* manager is considered idle */ int nr_busy = pool->nr_workers - nr_idle; @@ -1326,6 +1327,15 @@ static void idle_worker_rebind(struct worker *worker) /* we did our part, wait for rebind_workers() to finish up */ wait_event(gcwq->rebind_hold, !(worker->flags & WORKER_REBIND)); + + /* + * rebind_workers() shouldn't finish until all workers passed the + * above WORKER_REBIND wait. Tell it when done. + */ + spin_lock_irq(&worker->pool->gcwq->lock); + if (!--worker->idle_rebind->cnt) + complete(&worker->idle_rebind->done); + spin_unlock_irq(&worker->pool->gcwq->lock); } /* @@ -1396,12 +1406,15 @@ retry: /* set REBIND and kick idle ones, we'll wait for these later */ for_each_worker_pool(pool, gcwq) { list_for_each_entry(worker, &pool->idle_list, entry) { + unsigned long worker_flags = worker->flags; + if (worker->flags & WORKER_REBIND) continue; - /* morph UNBOUND to REBIND */ - worker->flags &= ~WORKER_UNBOUND; - worker->flags |= WORKER_REBIND; + /* morph UNBOUND to REBIND atomically */ + worker_flags &= ~WORKER_UNBOUND; + worker_flags |= WORKER_REBIND; + ACCESS_ONCE(worker->flags) = worker_flags; idle_rebind.cnt++; worker->idle_rebind = &idle_rebind; @@ -1419,25 +1432,15 @@ retry: goto retry; } - /* - * All idle workers are rebound and waiting for %WORKER_REBIND to - * be cleared inside idle_worker_rebind(). Clear and release. - * Clearing %WORKER_REBIND from this foreign context is safe - * because these workers are still guaranteed to be idle. - */ - for_each_worker_pool(pool, gcwq) - list_for_each_entry(worker, &pool->idle_list, entry) - worker->flags &= ~WORKER_REBIND; - - wake_up_all(&gcwq->rebind_hold); - - /* rebind busy workers */ + /* all idle workers are rebound, rebind busy workers */ for_each_busy_worker(worker, i, pos, gcwq) { struct work_struct *rebind_work = &worker->rebind_work; + unsigned long worker_flags = worker->flags; - /* morph UNBOUND to REBIND */ - worker->flags &= ~WORKER_UNBOUND; - worker->flags |= WORKER_REBIND; + /* morph UNBOUND to REBIND atomically */ + worker_flags &= ~WORKER_UNBOUND; + worker_flags |= WORKER_REBIND; + ACCESS_ONCE(worker->flags) = worker_flags; if (test_and_set_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(rebind_work))) @@ -1449,6 +1452,34 @@ retry: worker->scheduled.next, work_color_to_flags(WORK_NO_COLOR)); } + + /* + * All idle workers are rebound and waiting for %WORKER_REBIND to + * be cleared inside idle_worker_rebind(). Clear and release. + * Clearing %WORKER_REBIND from this foreign context is safe + * because these workers are still guaranteed to be idle. + * + * We need to make sure all idle workers passed WORKER_REBIND wait + * in idle_worker_rebind() before returning; otherwise, workers can + * get stuck at the wait if hotplug cycle repeats. + */ + idle_rebind.cnt = 1; + INIT_COMPLETION(idle_rebind.done); + + for_each_worker_pool(pool, gcwq) { + list_for_each_entry(worker, &pool->idle_list, entry) { + worker->flags &= ~WORKER_REBIND; + idle_rebind.cnt++; + } + } + + wake_up_all(&gcwq->rebind_hold); + + if (--idle_rebind.cnt) { + spin_unlock_irq(&gcwq->lock); + wait_for_completion(&idle_rebind.done); + spin_lock_irq(&gcwq->lock); + } } static struct worker *alloc_worker(void) @@ -1794,9 +1825,45 @@ static bool manage_workers(struct worker *worker) struct worker_pool *pool = worker->pool; bool ret = false; - if (!mutex_trylock(&pool->manager_mutex)) + if (pool->flags & POOL_MANAGING_WORKERS) return ret; + pool->flags |= POOL_MANAGING_WORKERS; + + /* + * To simplify both worker management and CPU hotplug, hold off + * management while hotplug is in progress. CPU hotplug path can't + * grab %POOL_MANAGING_WORKERS to achieve this because that can + * lead to idle worker depletion (all become busy thinking someone + * else is managing) which in turn can result in deadlock under + * extreme circumstances. Use @pool->manager_mutex to synchronize + * manager against CPU hotplug. + * + * manager_mutex would always be free unless CPU hotplug is in + * progress. trylock first without dropping @gcwq->lock. + */ + if (unlikely(!mutex_trylock(&pool->manager_mutex))) { + spin_unlock_irq(&pool->gcwq->lock); + mutex_lock(&pool->manager_mutex); + /* + * CPU hotplug could have happened while we were waiting + * for manager_mutex. Hotplug itself can't handle us + * because manager isn't either on idle or busy list, and + * @gcwq's state and ours could have deviated. + * + * As hotplug is now excluded via manager_mutex, we can + * simply try to bind. It will succeed or fail depending + * on @gcwq's current state. Try it and adjust + * %WORKER_UNBOUND accordingly. + */ + if (worker_maybe_bind_and_lock(worker)) + worker->flags &= ~WORKER_UNBOUND; + else + worker->flags |= WORKER_UNBOUND; + + ret = true; + } + pool->flags &= ~POOL_MANAGE_WORKERS; /* @@ -1806,6 +1873,7 @@ static bool manage_workers(struct worker *worker) ret |= maybe_destroy_workers(pool); ret |= maybe_create_worker(pool); + pool->flags &= ~POOL_MANAGING_WORKERS; mutex_unlock(&pool->manager_mutex); return ret; } diff --git a/lib/digsig.c b/lib/digsig.c index 286d558033e2..8c0e62975c88 100644 --- a/lib/digsig.c +++ b/lib/digsig.c @@ -163,9 +163,11 @@ static int digsig_verify_rsa(struct key *key, memcpy(out1 + head, p, l); err = pkcs_1_v1_5_decode_emsa(out1, len, mblen, out2, &len); + if (err) + goto err; - if (!err && len == hlen) - err = memcmp(out2, h, hlen); + if (len != hlen || memcmp(out2, h, hlen)) + err = -EINVAL; err: mpi_free(in); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index a5a402a7d21f..5d7f61d7559c 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -969,11 +969,11 @@ static bool xprt_dynamic_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req) return false; } -static void xprt_alloc_slot(struct rpc_task *task) +void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task) { - struct rpc_xprt *xprt = task->tk_xprt; struct rpc_rqst *req; + spin_lock(&xprt->reserve_lock); if (!list_empty(&xprt->free)) { req = list_entry(xprt->free.next, struct rpc_rqst, rq_list); list_del(&req->rq_list); @@ -994,12 +994,29 @@ static void xprt_alloc_slot(struct rpc_task *task) default: task->tk_status = -EAGAIN; } + spin_unlock(&xprt->reserve_lock); return; out_init_req: task->tk_status = 0; task->tk_rqstp = req; xprt_request_init(task, xprt); + spin_unlock(&xprt->reserve_lock); +} +EXPORT_SYMBOL_GPL(xprt_alloc_slot); + +void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task) +{ + /* Note: grabbing the xprt_lock_write() ensures that we throttle + * new slot allocation if the transport is congested (i.e. when + * reconnecting a stream transport or when out of socket write + * buffer space). + */ + if (xprt_lock_write(xprt, task)) { + xprt_alloc_slot(xprt, task); + xprt_release_write(xprt, task); + } } +EXPORT_SYMBOL_GPL(xprt_lock_and_alloc_slot); static void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req) { @@ -1083,20 +1100,9 @@ void xprt_reserve(struct rpc_task *task) if (task->tk_rqstp != NULL) return; - /* Note: grabbing the xprt_lock_write() here is not strictly needed, - * but ensures that we throttle new slot allocation if the transport - * is congested (e.g. if reconnecting or if we're out of socket - * write buffer space). - */ task->tk_timeout = 0; task->tk_status = -EAGAIN; - if (!xprt_lock_write(xprt, task)) - return; - - spin_lock(&xprt->reserve_lock); - xprt_alloc_slot(task); - spin_unlock(&xprt->reserve_lock); - xprt_release_write(xprt, task); + xprt->ops->alloc_slot(xprt, task); } static inline __be32 xprt_alloc_xid(struct rpc_xprt *xprt) diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index 06cdbff79e4a..5d9202dc7cb1 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -713,6 +713,7 @@ static void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq) static struct rpc_xprt_ops xprt_rdma_procs = { .reserve_xprt = xprt_rdma_reserve_xprt, .release_xprt = xprt_release_xprt_cong, /* sunrpc/xprt.c */ + .alloc_slot = xprt_alloc_slot, .release_request = xprt_release_rqst_cong, /* ditto */ .set_retrans_timeout = xprt_set_retrans_timeout_def, /* ditto */ .rpcbind = rpcb_getport_async, /* sunrpc/rpcb_clnt.c */ diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 400567243f84..a35b8e52e551 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2473,6 +2473,7 @@ static void bc_destroy(struct rpc_xprt *xprt) static struct rpc_xprt_ops xs_local_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, + .alloc_slot = xprt_alloc_slot, .rpcbind = xs_local_rpcbind, .set_port = xs_local_set_port, .connect = xs_connect, @@ -2489,6 +2490,7 @@ static struct rpc_xprt_ops xs_udp_ops = { .set_buffer_size = xs_udp_set_buffer_size, .reserve_xprt = xprt_reserve_xprt_cong, .release_xprt = xprt_release_xprt_cong, + .alloc_slot = xprt_alloc_slot, .rpcbind = rpcb_getport_async, .set_port = xs_set_port, .connect = xs_connect, @@ -2506,6 +2508,7 @@ static struct rpc_xprt_ops xs_udp_ops = { static struct rpc_xprt_ops xs_tcp_ops = { .reserve_xprt = xprt_reserve_xprt, .release_xprt = xs_tcp_release_xprt, + .alloc_slot = xprt_lock_and_alloc_slot, .rpcbind = rpcb_getport_async, .set_port = xs_set_port, .connect = xs_connect, diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 4235a6361fec..b3d907eb93a9 100644 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -74,8 +74,13 @@ kallsyms() info KSYM ${2} local kallsymopt; + if [ -n "${CONFIG_SYMBOL_PREFIX}" ]; then + kallsymopt="${kallsymopt} \ + --symbol-prefix=${CONFIG_SYMBOL_PREFIX}" + fi + if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then - kallsymopt=--all-symbols + kallsymopt="${kallsymopt} --all-symbols" fi local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ |