This patch series includes some cleanups and Unregistration of
thread-imc pmu, if the kernel does not have core-imc registered.
The entire patch set has been verified using the static checker smatch.
Command used:
$ make ARCH=powerpc CHECK="<path>/smatch -p=kernel" C=1 vmlinux | tee warns.txt
Tests Done:
* Fail core-imc at init:
nest-imc - working
cpuhotplug - works as expected
thread-imc - not registered
* Fail thread-imc at init:
nest-imc - works
core-imc - works
cpuhotplug - works
* Fail nest-imc at init
core-imc - works
thread-imc -works
cpuhotplug - works
* Fail only one nest unit (say for mcs23)
Other nest-units - works
core-imc - works
thread-imc - works
cpuhotplug - works.
* Kexec works
The first three patches in this series addresses the comments by Dan Carpenter.
Anju T Sudhakar (4):
powerpc/perf: Rearrange memory freeing in imc init
powerpc/perf: Replace the direct return with goto statement
powerpc/perf: Return appropriate value for unknown domain
powerpc/perf: Unregister thread-imc if core-imc not supported
arch/powerpc/include/asm/imc-pmu.h | 1 +
arch/powerpc/perf/imc-pmu.c | 64 +++++++++++++++++++------------
arch/powerpc/platforms/powernv/opal-imc.c | 22 +++++++++--
3 files changed, 60 insertions(+), 27 deletions(-)
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2.7.4