diff options
| author | Andi Kleen <ak@suse.de> | 2005-07-29 00:15:49 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-29 00:46:02 -0400 |
| commit | ed6b676ca8b50e0b538e61c283d52fd04f007abf (patch) | |
| tree | 753ea613ce334c41f835f6aac21074b137d24713 /kernel | |
| parent | 3829ee6b1be03d5aa3005fe7d19f30088b539836 (diff) | |
[PATCH] x86_64: Switch to the interrupt stack when running a softirq in local_bh_enable()
This avoids some potential stack overflows with very deep softirq callchains.
i386 does this too.
TOADD CFI annotation
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/softirq.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index b4ab6af1dea8..31007d6542cc 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c | |||
| @@ -86,7 +86,7 @@ restart: | |||
| 86 | /* Reset the pending bitmask before enabling irqs */ | 86 | /* Reset the pending bitmask before enabling irqs */ |
| 87 | local_softirq_pending() = 0; | 87 | local_softirq_pending() = 0; |
| 88 | 88 | ||
| 89 | local_irq_enable(); | 89 | //local_irq_enable(); |
| 90 | 90 | ||
| 91 | h = softirq_vec; | 91 | h = softirq_vec; |
| 92 | 92 | ||
| @@ -99,7 +99,7 @@ restart: | |||
| 99 | pending >>= 1; | 99 | pending >>= 1; |
| 100 | } while (pending); | 100 | } while (pending); |
| 101 | 101 | ||
| 102 | local_irq_disable(); | 102 | //local_irq_disable(); |
| 103 | 103 | ||
| 104 | pending = local_softirq_pending(); | 104 | pending = local_softirq_pending(); |
| 105 | if (pending && --max_restart) | 105 | if (pending && --max_restart) |