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| author | Ingo Molnar <mingo@elte.hu> | 2009-07-03 13:30:13 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-05-14 18:38:04 (GMT) |
| commit | 4d1b686e6bc40ce3f9af81c6c6ee63a75ab3673a (patch) | |
| tree | 3a5bc3d1ff52d5930f10ef6503936c106c9d6242 /mm | |
| parent | d0ba72d710f91713762bddfb3a85ff84ebc31332 (diff) | |
| download | linux-fsl-qoriq-4d1b686e6bc40ce3f9af81c6c6ee63a75ab3673a.tar.xz | |
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 5a442a7..efea337 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -217,6 +217,7 @@ 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); @@ -226,6 +227,7 @@ 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); @@ -258,6 +260,7 @@ 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)) { @@ -266,6 +269,7 @@ 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) @@ -280,6 +284,7 @@ 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)) { @@ -288,6 +293,7 @@ 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) |