From e29cf08b05dc0b8151d65704d96d525a9e179a6b Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 7 Oct 2013 11:29:22 +0100 Subject: 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 Reviewed-by: Rik van Riel Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Srikar Dronamraju Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1381141781-10992-45-git-send-email-mgorman@suse.de Signed-off-by: Ingo Molnar --- include/linux/sched.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') 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) { } -- cgit v1.2.3