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| author |   Rik van Riel <riel@redhat.com> | 2013-10-07 11:29:28 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2013-10-09 14:48:00 +0200 |
| commit | 82727018b0d33d188e9916bcf76f18387484cb04 (patch) | |
| tree | 429e0db98c4512f714a668ae9ef9d3bb6e85ce0f /include/linux/sched.h | |
| parent | sched/numa: Use group fault statistics in numa placement (diff) | |
| download | linux-dev-82727018b0d33d188e9916bcf76f18387484cb04.tar.xz linux-dev-82727018b0d33d188e9916bcf76f18387484cb04.zip | |
sched/numa: Call task_numa_free() from do_execve()
It is possible for a task in a numa group to call exec, and
have the new (unrelated) executable inherit the numa group
association from its former self.
This has the potential to break numa grouping, and is trivial
to fix.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-51-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 724482200b83..f6385107c352 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1458,6 +1458,7 @@ struct task_struct { extern void task_numa_fault(int last_node, int node, int pages, int flags); extern pid_t task_numa_group_id(struct task_struct *p); extern void set_numabalancing_state(bool enabled); +extern void task_numa_free(struct task_struct *p); #else static inline void task_numa_fault(int last_node, int node, int pages, int flags) @@ -1470,6 +1471,9 @@ static inline pid_t task_numa_group_id(struct task_struct *p) static inline void set_numabalancing_state(bool enabled) { } +static inline void task_numa_free(struct task_struct *p) +{ +} #endif static inline struct pid *task_pid(struct task_struct *task) |