From 0a492896ac07336c98f37ad7fab4a6387b6ada78 Mon Sep 17 00:00:00 2001 From: David S. Miller Date: Sun, 15 Aug 2010 00:26:14 -0700 Subject: sparc: Really fix "console=" for serial consoles. If a video head and keyboard are hooked up, specifying "console=ttyS0" or similar to use a serial console will not work properly. The key issue is that we must register all serial console capable devices with register_console(), otherwise the command line specified device won't be found. The sun serial drivers would only register themselves as console devices if the OpenFirmware specified console device node matched. To fix this part we now unconditionally get the serial console register by setting serial_drv->cons always. Secondarily we must not add_preferred_console() using the firmware provided console setting if the user gaven an override on the kernel command line using "console=" The "primary framebuffer" matching logic was always triggering o n openfirmware device node match, make it not when a command line override was given. Reported-by: Frans Pop Tested-by: Frans Pop Signed-off-by: David S. Miller --- arch/sparc/include/asm/fb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h index e834880be204..2173432ad7f7 100644 --- a/arch/sparc/include/asm/fb.h +++ b/arch/sparc/include/asm/fb.h @@ -1,5 +1,6 @@ #ifndef _SPARC_FB_H_ #define _SPARC_FB_H_ +#include #include #include #include @@ -18,6 +19,9 @@ static inline int fb_is_primary_device(struct fb_info *info) struct device *dev = info->device; struct device_node *node; + if (console_set_on_cmdline) + return 0; + node = dev->of_node; if (node && node == of_console_device) -- cgit v1.2.3 From 8e8073a449b2e00641c095ad55bd56f43468daf9 Mon Sep 17 00:00:00 2001 From: David S. Miller Date: Mon, 16 Aug 2010 15:04:29 -0700 Subject: sparc: Hook up new fanotify and prlimit64 syscalls. The only tricky bit is the compat version of fanotify_mark, which which on 32-bit the 64-bit mark argument is passed in as "high32", "low32". Signed-off-by: David S. Miller --- arch/sparc/include/asm/unistd.h | 5 ++++- arch/sparc/kernel/sys32.S | 9 +++++++++ arch/sparc/kernel/systbls_32.S | 3 ++- arch/sparc/kernel/systbls_64.S | 6 ++++-- 4 files changed, 19 insertions(+), 4 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index d0b3b01ac9d4..03eb5a8f6f93 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -397,8 +397,11 @@ #define __NR_rt_tgsigqueueinfo 326 #define __NR_perf_event_open 327 #define __NR_recvmmsg 328 +#define __NR_fanotify_init 329 +#define __NR_fanotify_mark 330 +#define __NR_prlimit64 331 -#define NR_syscalls 329 +#define NR_syscalls 332 #ifdef __32bit_syscall_numbers__ /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants, diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S index 46a76ba3fb4b..44e5faf1ad5f 100644 --- a/arch/sparc/kernel/sys32.S +++ b/arch/sparc/kernel/sys32.S @@ -330,6 +330,15 @@ do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */ nop nop + .globl sys32_fanotify_mark +sys32_fanotify_mark: + sethi %hi(sys_fanotify_mark), %g1 + sllx %o2, 32, %o2 + or %o2, %o3, %o2 + mov %o4, %o3 + jmpl %g1 + %lo(sys_fanotify_mark), %g0 + mov %o5, %o4 + .section __ex_table,"a" .align 4 .word 1b, __retl_efault, 2b, __retl_efault diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 801fc8e5a0e8..ec396e1916b9 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -82,5 +82,6 @@ sys_call_table: /*310*/ .long sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate /*315*/ .long sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv -/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg +/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init +/*330*/ .long sys_fanotify_mark, sys_prlimit64 diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 9db058dd039e..8cfcaa549580 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -83,7 +83,8 @@ sys_call_table32: /*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv - .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg + .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init +/*330*/ .word sys32_fanotify_mark, sys_prlimit64 #endif /* CONFIG_COMPAT */ @@ -158,4 +159,5 @@ sys_call_table: /*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv - .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg + .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init +/*330*/ .word sys_fanotify_mark, sys_prlimit64 -- cgit v1.2.3 From ef201bebe5afc91a2b99b45dacc8c6dd88ca9e58 Mon Sep 17 00:00:00 2001 From: David S. Miller Date: Tue, 17 Aug 2010 17:09:53 -0700 Subject: sparc64: Fix rwsem constant bug leading to hangs. As noticed by Linus, it is critical that some of the rwsem constants be signed. Yet, hex constants are unsigned unless explicitly casted or negated. The most critical one is RWSEM_WAITING_BIAS. This bug was exacerbated by commit 424acaaeb3a3932d64a9b4bd59df6cf72c22d8f3 ("rwsem: wake queued readers when writer blocks on active read lock") Signed-off-by: David S. Miller --- arch/sparc/include/asm/rwsem-const.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/rwsem-const.h b/arch/sparc/include/asm/rwsem-const.h index a303c9d64d84..e4c61a18bb28 100644 --- a/arch/sparc/include/asm/rwsem-const.h +++ b/arch/sparc/include/asm/rwsem-const.h @@ -5,7 +5,7 @@ #define RWSEM_UNLOCKED_VALUE 0x00000000 #define RWSEM_ACTIVE_BIAS 0x00000001 #define RWSEM_ACTIVE_MASK 0x0000ffff -#define RWSEM_WAITING_BIAS 0xffff0000 +#define RWSEM_WAITING_BIAS (-0x00010000) #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) -- cgit v1.2.3 From 86fa04b8742ac681d470786f55e2403ada0075b2 Mon Sep 17 00:00:00 2001 From: David S. Miller Date: Tue, 17 Aug 2010 17:12:04 -0700 Subject: sparc64: Fix atomic64_t routine return values. Should return 'long' instead of 'int'. Thanks to Dimitris Michailidis and Tony Luck. Signed-off-by: David S. Miller --- arch/sparc/include/asm/atomic_64.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h index 2050ca02c423..f0c74227c737 100644 --- a/arch/sparc/include/asm/atomic_64.h +++ b/arch/sparc/include/asm/atomic_64.h @@ -25,9 +25,9 @@ extern void atomic_sub(int, atomic_t *); extern void atomic64_sub(int, atomic64_t *); extern int atomic_add_ret(int, atomic_t *); -extern int atomic64_add_ret(int, atomic64_t *); +extern long atomic64_add_ret(int, atomic64_t *); extern int atomic_sub_ret(int, atomic_t *); -extern int atomic64_sub_ret(int, atomic64_t *); +extern long atomic64_sub_ret(int, atomic64_t *); #define atomic_dec_return(v) atomic_sub_ret(1, v) #define atomic64_dec_return(v) atomic64_sub_ret(1, v) @@ -91,7 +91,7 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u) ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) -static inline int atomic64_add_unless(atomic64_t *v, long a, long u) +static inline long atomic64_add_unless(atomic64_t *v, long a, long u) { long c, old; c = atomic64_read(v); -- cgit v1.2.3