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ia64/tlb: Eradicate tlb_migrate_finish() callback

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Only ia64-sn2 uses this as an optimization, and there it is of
questionable correctness due to the mm_users==1 test.

Remove it entirely.

No change in behavior intended.

Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2019-02-19 14:38:37 +01:00 • committed by Ingo Molnar
commit 6455959819
8 changed files with 0 additions and 40 deletions
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1
kernel/sched/core.c
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@ -1151,7 +1151,6 @@ static int __set_cpus_allowed_ptr(struct task_struct *p,
/* Need help from migration thread: drop lock and wait. */
task_rq_unlock(rq, p, &rf);
stop_one_cpu(cpu_of(rq), migration_cpu_stop, &arg);
tlb_migrate_finish(p->mm);
return 0;
} else if (task_on_rq_queued(p)) {
/*