diff options
| author | Rik van Riel <riel@redhat.com> | 2014-01-27 17:03:42 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-28 13:17:05 +0100 |
| commit | 50ec8a401fed6d246ab65e6011d61ac91c34af70 (patch) | |
| tree | a78aa3c23bb9837be712d72a39c19b3d7246170d /include/linux/sched.h | |
| parent | ff1df896aef8e0ec1556a5c44f424bd45bfa2cbe (diff) | |
sched/numa: Track from which nodes NUMA faults are triggered
Track which nodes NUMA faults are triggered from, in other words
the CPUs on which the NUMA faults happened. This uses a similar
mechanism to what is used to track the memory involved in numa faults.
The next patches use this to build up a bitmap of which nodes a
workload is actively running on.
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Chegu Vinod <chegu_vinod@hp.com>
Link: http://lkml.kernel.org/r/1390860228-21539-4-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 144d509df053..5fb0cfb43ecf 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1480,6 +1480,13 @@ struct task_struct { unsigned long *numa_faults_buffer_memory; /* + * Track the nodes the process was running on when a NUMA hinting + * fault was incurred. + */ + unsigned long *numa_faults_cpu; + unsigned long *numa_faults_buffer_cpu; + + /* * numa_faults_locality tracks if faults recorded during the last * scan window were remote/local. The task scan period is adapted * based on the locality of the faults with different weights @@ -1582,8 +1589,6 @@ 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); - -extern unsigned int sysctl_numa_balancing_migrate_deferred; #else static inline void task_numa_fault(int last_node, int node, int pages, int flags) |