aboutsummaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cred.c2
-rw-r--r--kernel/irq/Kconfig2
-rw-r--r--kernel/irq/irqdomain.c47
-rw-r--r--kernel/irq_work.c1
-rw-r--r--kernel/itimer.c8
-rw-r--r--kernel/panic.c2
-rw-r--r--kernel/sysctl.c8
-rw-r--r--kernel/time/Kconfig4
-rw-r--r--kernel/time/tick-broadcast.c4
-rw-r--r--kernel/time/tick-sched.c4
-rw-r--r--kernel/trace/blktrace.c18
11 files changed, 43 insertions, 57 deletions
diff --git a/kernel/cred.c b/kernel/cred.c
index 97b36eeca4c9..e70683d9ec32 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -386,6 +386,8 @@ int copy_creds(struct task_struct *p, unsigned long clone_flags)
struct cred *new;
int ret;
+ p->replacement_session_keyring = NULL;
+
if (
#ifdef CONFIG_KEYS
!p->cred->thread_keyring &&
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index cf1a4a68ce44..d1a758bc972a 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -62,7 +62,7 @@ config IRQ_DOMAIN_DEBUG
help
This option will show the mapping relationship between hardware irq
numbers and Linux irq numbers. The mapping is exposed via debugfs
- in the file "virq_mapping".
+ in the file "irq_domain_mapping".
If you don't know what this means you don't need it.
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 3601f3fbf67c..0e0ba5f840b2 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -23,7 +23,6 @@ static LIST_HEAD(irq_domain_list);
static DEFINE_MUTEX(irq_domain_mutex);
static DEFINE_MUTEX(revmap_trees_mutex);
-static unsigned int irq_virq_count = NR_IRQS;
static struct irq_domain *irq_default_domain;
/**
@@ -184,13 +183,16 @@ struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
}
struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
+ unsigned int max_irq,
const struct irq_domain_ops *ops,
void *host_data)
{
struct irq_domain *domain = irq_domain_alloc(of_node,
IRQ_DOMAIN_MAP_NOMAP, ops, host_data);
- if (domain)
+ if (domain) {
+ domain->revmap_data.nomap.max_irq = max_irq ? max_irq : ~0;
irq_domain_add(domain);
+ }
return domain;
}
@@ -262,22 +264,6 @@ void irq_set_default_host(struct irq_domain *domain)
irq_default_domain = domain;
}
-/**
- * irq_set_virq_count() - Set the maximum number of linux irqs
- * @count: number of linux irqs, capped with NR_IRQS
- *
- * This is mainly for use by platforms like iSeries who want to program
- * the virtual irq number in the controller to avoid the reverse mapping
- */
-void irq_set_virq_count(unsigned int count)
-{
- pr_debug("irq: Trying to set virq count to %d\n", count);
-
- BUG_ON(count < NUM_ISA_INTERRUPTS);
- if (count < NR_IRQS)
- irq_virq_count = count;
-}
-
static int irq_setup_virq(struct irq_domain *domain, unsigned int virq,
irq_hw_number_t hwirq)
{
@@ -320,13 +306,12 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain)
pr_debug("irq: create_direct virq allocation failed\n");
return 0;
}
- if (virq >= irq_virq_count) {
+ if (virq >= domain->revmap_data.nomap.max_irq) {
pr_err("ERROR: no free irqs available below %i maximum\n",
- irq_virq_count);
+ domain->revmap_data.nomap.max_irq);
irq_free_desc(virq);
return 0;
}
-
pr_debug("irq: create_direct obtained virq %d\n", virq);
if (irq_setup_virq(domain, virq, virq)) {
@@ -350,7 +335,8 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain)
unsigned int irq_create_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
- unsigned int virq, hint;
+ unsigned int hint;
+ int virq;
pr_debug("irq: irq_create_mapping(0x%p, 0x%lx)\n", domain, hwirq);
@@ -377,13 +363,13 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
return irq_domain_legacy_revmap(domain, hwirq);
/* Allocate a virtual interrupt number */
- hint = hwirq % irq_virq_count;
+ hint = hwirq % nr_irqs;
if (hint == 0)
hint++;
virq = irq_alloc_desc_from(hint, 0);
- if (!virq)
+ if (virq <= 0)
virq = irq_alloc_desc_from(1, 0);
- if (!virq) {
+ if (virq <= 0) {
pr_debug("irq: -> virq allocation failed\n");
return 0;
}
@@ -515,7 +501,7 @@ unsigned int irq_find_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
unsigned int i;
- unsigned int hint = hwirq % irq_virq_count;
+ unsigned int hint = hwirq % nr_irqs;
/* Look for default domain if nececssary */
if (domain == NULL)
@@ -536,7 +522,7 @@ unsigned int irq_find_mapping(struct irq_domain *domain,
if (data && (data->domain == domain) && (data->hwirq == hwirq))
return i;
i++;
- if (i >= irq_virq_count)
+ if (i >= nr_irqs)
i = 1;
} while(i != hint);
return 0;
@@ -642,8 +628,9 @@ static int virq_debug_show(struct seq_file *m, void *private)
void *data;
int i;
- seq_printf(m, "%-5s %-7s %-15s %-18s %s\n", "virq", "hwirq",
- "chip name", "chip data", "domain name");
+ seq_printf(m, "%-5s %-7s %-15s %-*s %s\n", "irq", "hwirq",
+ "chip name", (int)(2 * sizeof(void *) + 2), "chip data",
+ "domain name");
for (i = 1; i < nr_irqs; i++) {
desc = irq_to_desc(i);
@@ -666,7 +653,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
seq_printf(m, "%-15s ", p);
data = irq_desc_get_chip_data(desc);
- seq_printf(m, "0x%16p ", data);
+ seq_printf(m, data ? "0x%p " : " %p ", data);
if (desc->irq_data.domain && desc->irq_data.domain->of_node)
p = desc->irq_data.domain->of_node->full_name;
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 0c56d44b9fd5..1588e3b2871b 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -11,6 +11,7 @@
#include <linux/irq_work.h>
#include <linux/percpu.h>
#include <linux/hardirq.h>
+#include <linux/irqflags.h>
#include <asm/processor.h>
/*
diff --git a/kernel/itimer.c b/kernel/itimer.c
index 22000c3db0dd..8d262b467573 100644
--- a/kernel/itimer.c
+++ b/kernel/itimer.c
@@ -284,8 +284,12 @@ SYSCALL_DEFINE3(setitimer, int, which, struct itimerval __user *, value,
if (value) {
if(copy_from_user(&set_buffer, value, sizeof(set_buffer)))
return -EFAULT;
- } else
- memset((char *) &set_buffer, 0, sizeof(set_buffer));
+ } else {
+ memset(&set_buffer, 0, sizeof(set_buffer));
+ printk_once(KERN_WARNING "%s calls setitimer() with new_value NULL pointer."
+ " Misfeature support will be removed\n",
+ current->comm);
+ }
error = do_setitimer(which, &set_buffer, ovalue ? &get_buffer : NULL);
if (error || !ovalue)
diff --git a/kernel/panic.c b/kernel/panic.c
index 80aed44e345a..8ed89a175d79 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -97,7 +97,7 @@ void panic(const char *fmt, ...)
/*
* Avoid nested stack-dumping if a panic occurs during oops processing
*/
- if (!oops_in_progress)
+ if (!test_taint(TAINT_DIE) && oops_in_progress <= 1)
dump_stack();
#endif
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 52b3a06a02f8..4ab11879aeb4 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -170,7 +170,7 @@ static int proc_taint(struct ctl_table *table, int write,
#endif
#ifdef CONFIG_PRINTK
-static int proc_dmesg_restrict(struct ctl_table *table, int write,
+static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
#endif
@@ -703,7 +703,7 @@ static struct ctl_table kern_table[] = {
.data = &dmesg_restrict,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec_minmax,
+ .proc_handler = proc_dointvec_minmax_sysadmin,
.extra1 = &zero,
.extra2 = &one,
},
@@ -712,7 +712,7 @@ static struct ctl_table kern_table[] = {
.data = &kptr_restrict,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dmesg_restrict,
+ .proc_handler = proc_dointvec_minmax_sysadmin,
.extra1 = &zero,
.extra2 = &two,
},
@@ -1943,7 +1943,7 @@ static int proc_taint(struct ctl_table *table, int write,
}
#ifdef CONFIG_PRINTK
-static int proc_dmesg_restrict(struct ctl_table *table, int write,
+static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
if (write && !capable(CAP_SYS_ADMIN))
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index 2cf9cc7aa103..a20dc8a3c949 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -1,6 +1,10 @@
#
# Timer subsystem related configuration options
#
+
+# Core internal switch. Selected by NO_HZ / HIGH_RES_TIMERS. This is
+# only related to the tick functionality. Oneshot clockevent devices
+# are supported independ of this.
config TICK_ONESHOT
bool
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index e883f57a3cd3..bf57abdc7bd0 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -575,10 +575,12 @@ void tick_broadcast_switch_to_oneshot(void)
unsigned long flags;
raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
+
+ tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT;
+
if (cpumask_empty(tick_get_broadcast_mask()))
goto end;
- tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT;
bc = tick_broadcast_device.evtdev;
if (bc)
tick_broadcast_setup_oneshot(bc);
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 3526038f2836..6a3a5b9ff561 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -534,9 +534,9 @@ static void tick_nohz_restart(struct tick_sched *ts, ktime_t now)
hrtimer_get_expires(&ts->sched_timer), 0))
break;
}
- /* Update jiffies and reread time */
- tick_do_update_jiffies64(now);
+ /* Reread time and update jiffies */
now = ktime_get();
+ tick_do_update_jiffies64(now);
}
}
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index cdea7b56b0c9..c0bd0308741c 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -311,13 +311,6 @@ int blk_trace_remove(struct request_queue *q)
}
EXPORT_SYMBOL_GPL(blk_trace_remove);
-static int blk_dropped_open(struct inode *inode, struct file *filp)
-{
- filp->private_data = inode->i_private;
-
- return 0;
-}
-
static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
size_t count, loff_t *ppos)
{
@@ -331,18 +324,11 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
static const struct file_operations blk_dropped_fops = {
.owner = THIS_MODULE,
- .open = blk_dropped_open,
+ .open = simple_open,
.read = blk_dropped_read,
.llseek = default_llseek,
};
-static int blk_msg_open(struct inode *inode, struct file *filp)
-{
- filp->private_data = inode->i_private;
-
- return 0;
-}
-
static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
size_t count, loff_t *ppos)
{
@@ -371,7 +357,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
static const struct file_operations blk_msg_fops = {
.owner = THIS_MODULE,
- .open = blk_msg_open,
+ .open = simple_open,
.write = blk_msg_write,
.llseek = noop_llseek,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 10:41:12 +0000