powerpc/perf: Fix IMC_MAX_PMU macro
authorMadhavan Srinivasan <maddy@linux.vnet.ibm.com>
Wed, 22 Nov 2017 05:15:39 +0000 (10:45 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 22 Nov 2017 12:04:23 +0000 (23:04 +1100)
commit73ce9aec65b17433e18163d07eb5cb6bf114bd6c
tree5542875410b1fb049b34625245de3bfa10f708c6
parentde34787f1096cce38e2590be0013b44418d14546
powerpc/perf: Fix IMC_MAX_PMU macro

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>
arch/powerpc/include/asm/imc-pmu.h
arch/powerpc/perf/imc-pmu.c
arch/powerpc/platforms/powernv/opal-imc.c