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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 09:52:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 09:52:33 -0800
commit69f061e0c2ed47304b3eeac7fb7bd5268652dc50 (patch)
tree69bca9d5c7e7eb5e79dae030cbce713686e4d209 /include/linux/sched.h
parent607781762e7aae9c976f0a9a8829d4ba3e2da4ab (diff)
parentf84d49b218b7d4c6cba2e0b41f24bd4045403962 (diff)
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Merge branch 'core-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: signal: Print warning message when dropping signals signal: Fix alternate signal stack check
Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 49be8f7c05f6..882dc48163b4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2086,11 +2086,18 @@ static inline int is_si_special(const struct siginfo *info)
return info <= SEND_SIG_FORCED;
}
-/* True if we are on the alternate signal stack. */
-
+/*
+ * True if we are on the alternate signal stack.
+ */
static inline int on_sig_stack(unsigned long sp)
{
- return (sp - current->sas_ss_sp < current->sas_ss_size);
+#ifdef CONFIG_STACK_GROWSUP
+ return sp >= current->sas_ss_sp &&
+ sp - current->sas_ss_sp < current->sas_ss_size;
+#else
+ return sp > current->sas_ss_sp &&
+ sp - current->sas_ss_sp <= current->sas_ss_size;
+#endif
}
static inline int sas_ss_flags(unsigned long sp)