linux-kernel - [PATCH v2 0/3] perf/ibs: Fix interface via core pmu events

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Date:   Thu, 9 Mar 2023 15:41:08 +0530
From:   Ravi Bangoria <ravi.bangoria@....com>
To:     <peterz@...radead.org>
CC:     <ravi.bangoria@....com>, <namhyung@...nel.org>,
        <eranian@...gle.com>, <acme@...nel.org>, <mark.rutland@....com>,
        <jolsa@...nel.org>, <irogers@...gle.com>, <bp@...en8.de>,
        <x86@...nel.org>, <linux-perf-users@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <sandipan.das@....com>,
        <ananth.narayan@....com>, <santosh.shukla@....com>
Subject: [PATCH v2 0/3] perf/ibs: Fix interface via core pmu events

IBS used to allow event creation via core pmu events with precise_ip
attribute set, but it's broken since late 2019. 1st patch does pre-
req changes, 2nd patch fixes the issue and 3rd patch adds simple perf
test for the same.

v1: https://lore.kernel.org/r/20230302092109.367-1-ravi.bangoria@amd.com
v1->v2:
 - Instead of using pmu capability, use error code -ESRCH to forward
   the event to different pmu.
 - Rebase on v6.3-rc1

Ravi Bangoria (3):
  perf/ibs: Introduce ibs_core_pmu_event()
  perf/ibs: Fix interface via core pmu events
  perf test: Add selftest to test IBS invocation via core pmu events

 arch/x86/events/amd/core.c          | 11 +++--
 arch/x86/events/amd/ibs.c           | 52 +++++++++++----------
 arch/x86/include/asm/perf_event.h   |  2 +
 kernel/events/core.c                | 10 ++++-
 tools/perf/tests/Build              |  1 +
 tools/perf/tests/builtin-test.c     |  1 +
 tools/perf/tests/ibs-via-core-pmu.c | 70 +++++++++++++++++++++++++++++
 tools/perf/tests/tests.h            |  1 +
 8 files changed, 121 insertions(+), 27 deletions(-)
 create mode 100644 tools/perf/tests/ibs-via-core-pmu.c

-- 
2.39.2