diff options
| author | Mel Gorman <mgorman@suse.de> | 2013-10-07 12:29:22 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-09 14:47:49 +0200 |
| commit | e29cf08b05dc0b8151d65704d96d525a9e179a6b (patch) | |
| tree | 07eb90e16973acca57ed9bc3866f2bff8ab0750a /include | |
| parent | sched/numa: Use {cpu, pid} to create task groups for shared faults (diff) | |
| download | linux-e29cf08b05dc0b8151d65704d96d525a9e179a6b.tar.xz linux-e29cf08b05dc0b8151d65704d96d525a9e179a6b.zip | |
sched/numa: Report a NUMA task group ID
It is desirable to model from userspace how the scheduler groups tasks
over time. This patch adds an ID to the numa_group and reports it via
/proc/PID/status.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
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/1381141781-10992-45-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index f587ded5c148..b0b343b1ba64 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1452,12 +1452,17 @@ struct task_struct { #ifdef CONFIG_NUMA_BALANCING extern void task_numa_fault(int last_node, int node, int pages, bool migrated); +extern pid_t task_numa_group_id(struct task_struct *p); extern void set_numabalancing_state(bool enabled); #else static inline void task_numa_fault(int last_node, int node, int pages, bool migrated) { } +static inline pid_t task_numa_group_id(struct task_struct *p) +{ + return 0; +} static inline void set_numabalancing_state(bool enabled) { } |