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| author |   Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2017-07-11 16:27:49 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-07-11 22:19:36 +1000 |
| commit | 20dd4c624d25156d5ec3345bbb690b98175ef879 (patch) | |
| tree | 8e72695d0d3e3c5198851d4779f6dc1cbfaa9343 /arch/powerpc/perf/power9-events-list.h | |
| parent | powerpc/asm: Mark cr0 as clobbered in mftb() (diff) | |
| download | wireguard-linux-20dd4c624d25156d5ec3345bbb690b98175ef879.tar.xz wireguard-linux-20dd4c624d25156d5ec3345bbb690b98175ef879.zip | |
powerpc/perf: Fix SDAR_MODE value for continous sampling on Power9
In case of continous sampling (non-marked), the code currently
sets MMCRA[SDAR_MODE] to 0b01 (Update on TLB miss) for Power9 DD1.
On DD2 and later it copies the sdar_mode value from the event code,
which for most events is 0b00 (No updates).
However we must set a non-zero value for SDAR_MODE when doing
continuous sampling, so honor the event code, unless it's zero, in
which case we use use 0b01 (Update on TLB miss).
Fixes: 78b4416aa249 ("powerpc/perf: Handle sdar_mode for marked event in power9")
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/perf/power9-events-list.h')
0 files changed, 0 insertions, 0 deletions