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-rw-r--r--kernel/posix-cpu-timers.c8
-rw-r--r--kernel/sched.c2
-rw-r--r--kernel/sysctl.c5
-rw-r--r--kernel/trace/trace.c1
4 files changed, 10 insertions, 6 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index c9dcf98b446..bece7c0b67b 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1420,19 +1420,19 @@ void run_posix_cpu_timers(struct task_struct *tsk)
* timer call will interfere.
*/
list_for_each_entry_safe(timer, next, &firing, it.cpu.entry) {
- int firing;
+ int cpu_firing;
+
spin_lock(&timer->it_lock);
list_del_init(&timer->it.cpu.entry);
- firing = timer->it.cpu.firing;
+ cpu_firing = timer->it.cpu.firing;
timer->it.cpu.firing = 0;
/*
* The firing flag is -1 if we collided with a reset
* of the timer, which already reported this
* almost-firing as an overrun. So don't generate an event.
*/
- if (likely(firing >= 0)) {
+ if (likely(cpu_firing >= 0))
cpu_timer_fire(timer);
- }
spin_unlock(&timer->it_lock);
}
}
diff --git a/kernel/sched.c b/kernel/sched.c
index b902e587a3a..26efa475bdc 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4732,7 +4732,7 @@ void account_process_tick(struct task_struct *p, int user_tick)
if (user_tick)
account_user_time(p, one_jiffy, one_jiffy_scaled);
- else if (p != rq->idle)
+ else if ((p != rq->idle) || (irq_count() != HARDIRQ_OFFSET))
account_system_time(p, HARDIRQ_OFFSET, one_jiffy,
one_jiffy_scaled);
else
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index e3d2c7dd59b..ea78fa101ad 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -103,6 +103,9 @@ static unsigned long one_ul = 1;
static int one_hundred = 100;
static int one_thousand = 1000;
+/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
+static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
+
/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
static int maxolduid = 65535;
static int minolduid;
@@ -1006,7 +1009,7 @@ static struct ctl_table vm_table[] = {
.mode = 0644,
.proc_handler = &dirty_bytes_handler,
.strategy = &sysctl_intvec,
- .extra1 = &one_ul,
+ .extra1 = &dirty_bytes_min,
},
{
.procname = "dirty_writeback_centisecs",
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 1ce5dc6372b..a884c09006c 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3448,6 +3448,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
if (!ref)
break;
+ ref->ref = 1;
ref->buffer = info->tr->buffer;
ref->page = ring_buffer_alloc_read_page(ref->buffer);
if (!ref->page) {