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powerpc/perf: Add Power10 BHRB filter support for PERF_SAMPLE_BRANCH_IND_CALL/COND 

PowerISA v3.1 introduce filtering support for
PERF_SAMPLE_BRANCH_IND_CALL/COND. The patch adds BHRB filter
support for "ind_call" and "cond" in power10_bhrb_filter_map().

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1594996707-3727-11-git-send-email-atrajeev@linux.vnet.ibm.com
This commit is contained in:
Athira Rajeev 2020-07-17 10:38:22 -04:00 committed by Michael Ellerman
parent bfe3b1945d
commit 80350a4bac
1 changed files with 11 additions and 2 deletions
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13
arch/powerpc/perf/power10-pmu.c
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@ -83,6 +83,8 @@
/* MMCRA IFM bits - POWER10 */
#define POWER10_MMCRA_IFM1 0x0000000040000000UL
#define POWER10_MMCRA_IFM2 0x0000000080000000UL
#define POWER10_MMCRA_IFM3 0x00000000C0000000UL
#define POWER10_MMCRA_BHRB_MASK 0x00000000C0000000UL
/* Table of alternatives, sorted by column 0 */
@ -233,8 +235,15 @@ static u64 power10_bhrb_filter_map(u64 branch_sample_type)
if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN)
return -1;
if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL)
return -1;
if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) {
pmu_bhrb_filter |= POWER10_MMCRA_IFM2;
return pmu_bhrb_filter;
}
if (branch_sample_type & PERF_SAMPLE_BRANCH_COND) {
pmu_bhrb_filter |= POWER10_MMCRA_IFM3;
return pmu_bhrb_filter;
}
if (branch_sample_type & PERF_SAMPLE_BRANCH_CALL)
return -1;