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sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa 

Bugzilla: http://bugzilla.redhat.com/2062831

commit 28c988c3ec29db74a1dda631b18785958d57df4f
Author: Bharata B Rao <bharata@amd.com>
Date:   Tue Jan 18 10:35:15 2022 +0530

    sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa

    The older format of /proc/pid/sched printed home node info which
    required the mempolicy and task lock around mpol_get(). However
    the format has changed since then and there is no need for
    sched_show_numa() any more to have mempolicy argument,
    asssociated mpol_get/put and task_lock/unlock. Remove them.

    Fixes: 397f2378f1 ("sched/numa: Fix numa balancing stats in /proc/pid/sched")
    Signed-off-by: Bharata B Rao <bharata@amd.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    Acked-by: Mel Gorman <mgorman@suse.de>
    Link: https://lore.kernel.org/r/20220118050515.2973-1-bharata@amd.com

Signed-off-by: Phil Auld <pauld@redhat.com>
This commit is contained in:
Phil Auld 2022-03-23 17:59:54 -04:00
parent 98b43d489f
commit a074ad4a40
1 changed files with 0 additions and 10 deletions
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10
kernel/sched/debug.c
View File

@ -931,25 +931,15 @@ void print_numa_stats(struct seq_file *m, int node, unsigned long tsf,
static void sched_show_numa(struct task_struct *p, struct seq_file *m)
{
#ifdef CONFIG_NUMA_BALANCING
struct mempolicy *pol;
if (p->mm)
P(mm->numa_scan_seq);
task_lock(p);
pol = p->mempolicy;
if (pol && !(pol->flags & MPOL_F_MORON))
pol = NULL;
mpol_get(pol);
task_unlock(p);
P(numa_pages_migrated);
P(numa_preferred_nid);
P(total_numa_faults);
SEQ_printf(m, "current_node=%d, numa_group_id=%d\n",
task_node(p), task_numa_group_id(p));
show_numa_stats(p, m);
mpol_put(pol);
#endif
}