diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-07-03 08:30:13 -0500 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-03-24 09:29:10 -0500 |
| commit | 24da19db4ee61bdf0b89b72c920cda48fdf559e1 (patch) | |
| tree | 86334ce29892dd8cb48351c4207c7e22988e22c9 /mm | |
| parent | 1642d8d6f32884a617a526121863473975a46df6 (diff) | |
mm: make vmstat -rt aware
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmstat.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 8fd603b1665e..726f0b6b0508 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -216,6 +216,7 @@ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item, long x; long t; + preempt_disable_rt(); x = delta + __this_cpu_read(*p); t = __this_cpu_read(pcp->stat_threshold); @@ -225,6 +226,7 @@ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item, x = 0; } __this_cpu_write(*p, x); + preempt_enable_rt(); } EXPORT_SYMBOL(__mod_zone_page_state); @@ -257,6 +259,7 @@ void __inc_zone_state(struct zone *zone, enum zone_stat_item item) s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; + preempt_disable_rt(); v = __this_cpu_inc_return(*p); t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v > t)) { @@ -265,6 +268,7 @@ void __inc_zone_state(struct zone *zone, enum zone_stat_item item) zone_page_state_add(v + overstep, zone, item); __this_cpu_write(*p, -overstep); } + preempt_enable_rt(); } void __inc_zone_page_state(struct page *page, enum zone_stat_item item) @@ -279,6 +283,7 @@ void __dec_zone_state(struct zone *zone, enum zone_stat_item item) s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; + preempt_disable_rt(); v = __this_cpu_dec_return(*p); t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v < - t)) { @@ -287,6 +292,7 @@ void __dec_zone_state(struct zone *zone, enum zone_stat_item item) zone_page_state_add(v - overstep, zone, item); __this_cpu_write(*p, overstep); } + preempt_enable_rt(); } void __dec_zone_page_state(struct page *page, enum zone_stat_item item) |