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[PATCH] kprobes-changed-from-using-spinlock-to-mutex fix

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Based on some feedback from Oleg Nesterov, I have made few changes to
previously posted patch.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Keshavamurthy Anil S
2006-01-09 20:52:44 -08:00
committed by Linus Torvalds
parent 49a2a1b83b
commit f709b12234
3 changed files with 20 additions and 19 deletions
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3
arch/powerpc/kernel/kprobes.c
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@@ -35,7 +35,6 @@
#include <asm/kdebug.h>
#include <asm/sstep.h>
static DECLARE_MUTEX(kprobe_mutex);
DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
@@ -54,9 +53,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
/* insn must be on a special executable page on ppc64 */
if (!ret) {
down(&kprobe_mutex);
p->ainsn.insn = get_insn_slot();
up(&kprobe_mutex);
if (!p->ainsn.insn)
ret = -ENOMEM;
}