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

[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- Remove outdated comment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
......@@ -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;
......
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