Commit 80350a4b authored by Athira Rajeev's avatar Athira Rajeev Committed by Michael Ellerman
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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: default avatarAthira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1594996707-3727-11-git-send-email-atrajeev@linux.vnet.ibm.com
parent bfe3b194

arch/powerpc/perf/power10-pmu.c

+11 −2
Original line number Diff line number Diff line
@@ -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;