Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8c40ad02e5b026902b8ce134f895b3b09803db39
Commit: 8c40ad02e5b026902b8ce134f895b3b09803db39
Parent: 930f8b8bcde30b501fdf00fb7624aefb9bf35f47
Author: Andi Kleen <[EMAIL PROTECTED]>
AuthorDate: Tue Feb 13 13:26:23 2007 +0100
Committer: Andi Kleen <[EMAIL PROTECTED]>
CommitDate: Tue Feb 13 13:26:23 2007 +0100
[PATCH] i386: Small cleanup to TLB flush code
- Remove outdated comment
- Use cpu_relax() in a busy loop
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
---
arch/i386/kernel/smp.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index ffc4f65..9bd9637 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -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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