Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8c40ad02 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files

[PATCH] i386: Small cleanup to TLB flush code 



- Remove outdated comment
- Use cpu_relax() in a busy loop

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 930f8b8b

arch/i386/kernel/smp.c

+2 −3
Original line number Diff line number Diff line
@@ -375,8 +375,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, 
	/*

	 * i'm not happy about this global shared spinlock in the

	 * MM hot path, but we'll see how contended it is.

	 * Temporarily this turns IRQs off, so that lockups are

	 * detected by the NMI watchdog.

	 * AK: x86-64 has a faster method that could be ported.

	 */

	spin_lock(&tlbstate_lock);
@@ -401,7 +400,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, 


	while (!cpus_empty(flush_cpumask))

		/* nothing. lockup detection does not belong here */

		mb();

		cpu_relax();



	flush_mm = NULL;

	flush_va = 0;