From 8bc68c44d97f28978aaa0012c395dc6f08dc02c3 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Tue, 18 Jan 2022 10:35:15 +0530 Subject: [PATCH] sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa [ Upstream commit 28c988c3ec29db74a1dda631b18785958d57df4f ] 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: 397f2378f1361 ("sched/numa: Fix numa balancing stats in /proc/pid/sched") Signed-off-by: Bharata B Rao Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srikar Dronamraju Acked-by: Mel Gorman Link: https://lore.kernel.org/r/20220118050515.2973-1-bharata@amd.com Signed-off-by: Sasha Levin --- kernel/sched/debug.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 17a653b..7a2d32d 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -921,25 +921,15 @@ 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 } -- 2.7.4