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| author | Gavin Shan <shangw@linux.vnet.ibm.com> | 2012-09-07 22:44:06 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-10 09:35:30 +1000 |
| commit | 646a8499403e049845dda3141ec1ac021f029f11 (patch) | |
| tree | 3b01074605b136f9e3153a533df58af5787c4017 /arch/powerpc/platforms/pseries/eeh.c | |
| parent | 968f968f9b9aaa6ff92c20090c600fc7c112af55 (diff) | |
| download | blackbird-op-linux-646a8499403e049845dda3141ec1ac021f029f11.tar.gz blackbird-op-linux-646a8499403e049845dda3141ec1ac021f029f11.zip | |
powerpc/eeh: Introduce global mutex
The patch introduces global mutex for EEH so that the core data
structures can be protected by that. Also, 2 inline functions
are exported for that: eeh_lock() and eeh_unlock().
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/eeh.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index e819448ea3a7..0ba7e3b84672 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -92,6 +92,9 @@ struct eeh_ops *eeh_ops = NULL; int eeh_subsystem_enabled; EXPORT_SYMBOL(eeh_subsystem_enabled); +/* Global EEH mutex */ +DEFINE_MUTEX(eeh_mutex); + /* Lock to avoid races due to multiple reports of an error */ static DEFINE_RAW_SPINLOCK(confirm_error_lock); |
