lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 20 May 2022 11:35:16 +0100 From: Mel Gorman <mgorman@...hsingularity.net> To: Peter Zijlstra <peterz@...radead.org> Cc: Ingo Molnar <mingo@...nel.org>, Vincent Guittot <vincent.guittot@...aro.org>, Valentin Schneider <valentin.schneider@....com>, K Prateek Nayak <kprateek.nayak@....com>, Aubrey Li <aubrey.li@...ux.intel.com>, Ying Huang <ying.huang@...el.com>, LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mgorman@...hsingularity.net> Subject: [PATCH 1/4] sched/numa: Initialise numa_migrate_retry On clone, numa_migrate_retry is inherited from the parent which means that the first NUMA placement of a task is non-deterministic. This affects when load balancing recognises numa tasks and whether to migrate "regular", "remote" or "all" tasks between NUMA scheduler domains. Signed-off-by: Mel Gorman <mgorman@...hsingularity.net> --- kernel/sched/fair.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d4bd299d67ab..867806a57119 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2873,6 +2873,7 @@ void init_numa_balancing(unsigned long clone_flags, struct task_struct *p) p->node_stamp = 0; p->numa_scan_seq = mm ? mm->numa_scan_seq : 0; p->numa_scan_period = sysctl_numa_balancing_scan_delay; + p->numa_migrate_retry = 0; /* Protect against double add, see task_tick_numa and task_numa_work */ p->numa_work.next = &p->numa_work; p->numa_faults = NULL; -- 2.34.1
Powered by blists - more mailing lists