powerpc/perf: Fix unit_sel/cache_sel checks

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Raw event code has couple of fields "unit" and "cache" in it, to capture
the "unit" to monitor for a given pmcxsel and cache reload qualifier to
program in MMCR1.

isa207_get_constraint() refers "unit" field to update the MMCRC (L2/L3)
Event bus control fields with "cache" bits of the raw event code.
These are power8 specific and not supported by PowerISA v3.0 pmu. So wrap
the checks to be power8 specific. Also, "cache" bit field is referred to
update MMCR1[16:17] and this check can be power8 specific.

Fixes: 7ffd948fae ('powerpc/perf: factor out power8 pmu functions')
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Madhavan Srinivasan 2017-10-09 19:42:40 +05:30 • committed by Michael Ellerman

parent 8c31459d61

commit 2d46d4877b

2 changed files with 20 additions and 9 deletions

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25

arch/powerpc/perf/isa207-common.c

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4

arch/powerpc/perf/isa207-common.h

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