powerpc/perf: Fix IMC_MAX_PMU macro

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IMC_MAX_PMU is used for static storage (per_nest_pmu_arr) which holds
nest pmu information. Current value for the macro is 32 based on
the initial number of nest pmu units supported by the nest microcode.
But going forward, microcode could support more nest units. Instead
of static storage, patch to fix the code to dynamically allocate an
array based on the number of nest imc units found in the device tree.

Fixes:8f95faaac56c1 ('powerpc/powernv: Detect and create IMC device')
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 2017-11-22 10:45:39 +05:30 • committed by Michael Ellerman

parent de34787f10

commit 73ce9aec65

3 changed files with 29 additions and 8 deletions

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6

arch/powerpc/include/asm/imc-pmu.h

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15

arch/powerpc/perf/imc-pmu.c

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16

arch/powerpc/platforms/powernv/opal-imc.c

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