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| author | Andi Kleen <ak@suse.de> | 2005-07-28 21:15:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-28 21:46:02 -0700 |
| commit | ed6b676ca8b50e0b538e61c283d52fd04f007abf (patch) | |
| tree | 753ea613ce334c41f835f6aac21074b137d24713 /kernel/softirq.c | |
| parent | 3829ee6b1be03d5aa3005fe7d19f30088b539836 (diff) | |
| download | lwn-ed6b676ca8b50e0b538e61c283d52fd04f007abf.tar.gz lwn-ed6b676ca8b50e0b538e61c283d52fd04f007abf.zip | |
[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/softirq.c')
| -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: /* Reset the pending bitmask before enabling irqs */ local_softirq_pending() = 0; - local_irq_enable(); + //local_irq_enable(); h = softirq_vec; @@ -99,7 +99,7 @@ restart: pending >>= 1; } while (pending); - local_irq_disable(); + //local_irq_disable(); pending = local_softirq_pending(); if (pending && --max_restart) |