From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: kjain@linux.ibm.com, maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH V3 04/35] selftest/powerpc/pmu: Add support for branch sampling in get_intr_regs function
Date: Fri, 10 Jun 2022 19:10:42 +0530 [thread overview]
Message-ID: <20220610134113.62991-5-atrajeev@linux.vnet.ibm.com> (raw)
In-Reply-To: <20220610134113.62991-1-atrajeev@linux.vnet.ibm.com>
From: Kajol Jain <kjain@linux.ibm.com>
Add support for sample type as PERF_SAMPLE_BRANCH_STACK in sampling
tests. This change is a precursor/helper for sampling testcases, that
test branck stack feature in perf interface.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
---
.../powerpc/pmu/sampling_tests/misc.c | 21 ++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
index 6e30b455cbd6..5a26fc3a9706 100644
--- a/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
+++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/misc.c
@@ -259,13 +259,32 @@ u64 *get_intr_regs(struct event *event, void *sample_buff)
u64 *intr_regs;
size_t size = 0;
- if ((type ^ PERF_SAMPLE_REGS_INTR))
+ if ((type ^ (PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_BRANCH_STACK)) &&
+ (type ^ PERF_SAMPLE_REGS_INTR))
return NULL;
intr_regs = (u64 *)perf_read_first_sample(sample_buff, &size);
if (!intr_regs)
return NULL;
+ if (type & PERF_SAMPLE_BRANCH_STACK) {
+ /*
+ * PERF_RECORD_SAMPLE and PERF_SAMPLE_BRANCH_STACK:
+ * struct {
+ * struct perf_event_header hdr;
+ * u64 number_of_branches;
+ * struct perf_branch_entry[number_of_branches];
+ * u64 data[];
+ * };
+ * struct perf_branch_entry {
+ * u64 from;
+ * u64 to;
+ * u64 misc;
+ * };
+ */
+ intr_regs += ((*intr_regs) * 3) + 1;
+ }
+
/*
* First entry in the sample buffer used to specify
* PERF_SAMPLE_REGS_ABI_64, skip perf regs abi to access
--
2.35.1
next prev parent reply other threads:[~2022-06-10 13:44 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 13:40 [PATCH V3 00/35] Add group constraints and event code test as part of selftest Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 01/35] selftest/powerpc/pmu: Add mask/shift bits for extracting threshold compare field Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 02/35] testing/selftests/powerpc: Add support to fetch "platform" and "base platform" from auxv to detect platform Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 03/35] selftest/powerpc/pmu: Add interface test for mmcra_thresh_cmp fields Athira Rajeev
2022-06-10 13:40 ` Athira Rajeev [this message]
2022-06-10 13:40 ` [PATCH V3 05/35] selftest/powerpc/pmu: Add interface test for mmcra_ifm field of indirect call type Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 06/35] selftest/powerpc/pmu: Add interface test for mmcra_ifm field for any branch type Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 07/35] selftest/powerpc/pmu: Add interface test for mmcra_ifm field for conditional " Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 08/35] selftest/powerpc/pmu: Add interface test for bhrb disable field Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 09/35] selftest/powerpc/pmu: Refactor the platform check and add macros to find array size/PVR Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 10/35] selftest/powerpc/pmu: Add selftest to check branch stack enablement will not crash on any platforms Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 11/35] selftest/powerpc/pmu: Add selftest to check PERF_SAMPLE_REGS_INTR option " Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 12/35] selftest/powerpc/pmu: Add selftest for checking valid and invalid bhrb filter maps Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 13/35] selftest/powerpc/pmu: Add selftest for mmcr1 pmcxsel/unit/cache fields Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 14/35] selftest/powerpc/pmu: Add interface test for bhrb disable field for non-branch samples Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 15/35] selftest/powerpc/pmu: Add support for perf event code tests Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 16/35] selftest/powerpc/pmu: Add selftest for group constraint check for PMC5 and PMC6 Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 17/35] selftest/powerpc/pmu: Add selftest to check PMC5/6 is excluded from some constraint checks Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 18/35] selftest/powerpc/pmu: Add selftest to check constraint for number of counters in use Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 19/35] selftest/powerpc/pmu: Add selftest for group constraint check when using same PMC Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 20/35] selftest/powerpc/pmu: Add selftest for group constraint check for radix_scope_qual field Athira Rajeev
2022-06-10 13:40 ` [PATCH V3 21/35] selftest/powerpc/pmu: Add selftest for group constraint for MMCRA Sampling Mode field Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 22/35] selftest/powerpc/pmu: Add selftest for group constraint check MMCRA sample bits Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 23/35] selftest/powerpc/pmu: Add selftest for checking invalid bits in event code Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 24/35] selftest/powerpc/pmu: Add selftest for reserved bit check for MMCRA thresh_ctl field Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 25/35] selftest/powerpc/pmu: Add selftest for blacklist events check in power9 Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 26/35] selftest/powerpc/pmu: Add selftest for event alternatives for power9 Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 27/35] selftest/powerpc/pmu: Add selftest for event alternatives for power10 Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 28/35] selftest/powerpc/pmu: Add selftest for PERF_TYPE_HARDWARE events valid check Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 29/35] selftest/powerpc/pmu: Add selftest for group constraint check for MMCR0 l2l3_sel bits Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 30/35] selftest/powerpc/pmu: Add selftest for group constraint check for MMCR1 cache bits Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 31/35] selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_cmp field Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 32/35] selftest/powerpc/pmu: Add selftest for group constraint for unit and pmc field in p9 Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 33/35] selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_ctl field Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 34/35] selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_sel field Athira Rajeev
2022-06-10 13:41 ` [PATCH V3 35/35] selftest/powerpc/pmu: Add test for hardware cache events Athira Rajeev
2022-07-04 11:33 ` [PATCH V3 00/35] Add group constraints and event code test as part of selftest Michael Ellerman
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