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authorNur Hussein <nurhussein@gmail.com>2008-04-29 00:58:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:05:59 -0700
commit95b570c9cef3b12356454c7112571b7e406b4b51 (patch)
treef4494412f9e3a02bce5b59a906ee9360a536191d /include/linux/kernel.h
parentbd3feb13e15a4859f629c9a076554e260c1d1397 (diff)
Taint kernel after WARN_ON(condition)
The kernel is sent to tainted within the warn_on_slowpath() function, and whenever a warning occurs the new taint flag 'W' is set. This is useful to know if a warning occurred before a BUG by preserving the warning as a flag in the taint state. This does not work on architectures where WARN_ON has its own definition. These archs are: 1. s390 2. superh 3. avr32 4. parisc The maintainers of these architectures have been added in the Cc: list in this email to alert them to the situation. The documentation in oops-tracing.txt has been updated to include the new flag. Signed-off-by: Nur Hussein <nurhussein@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index cd6d02cf854d..28caa53dd1f7 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -255,6 +255,7 @@ extern enum system_states {
#define TAINT_USER (1<<6)
#define TAINT_DIE (1<<7)
#define TAINT_OVERRIDDEN_ACPI_TABLE (1<<8)
+#define TAINT_WARN (1<<9)
extern void dump_stack(void) __cold;