linux-kernel - [PATCH V3 0/4] perf/core: Assert PERF_EVENT_FLAG

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Message-Id: <20220907091924.439193-1-anshuman.khandual@arm.com>
Date:   Wed,  7 Sep 2022 14:49:20 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, peterz@...radead.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        James Clark <james.clark@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>, x86@...nel.org
Subject: [PATCH V3 0/4] perf/core: Assert PERF_EVENT_FLAG_ARCH is followed

This series ensures that PERF_EVENT_FLAG_ARCH mask is followed correctly
while defining all the platform specific hardware event flags. But first
this expands PERF_EVENT_FLAG_ARCH with another four bits, to accommodate
some x86 platform event flags which were going beyond the existing mask.

This series applies on v6.0-rc4.

Changes in V3:

- Reworked event flags check on x86 platform as per Peter

Changes in V2:

https://lore.kernel.org/all/20220905054239.324029-1-anshuman.khandual@arm.com/

- Added first patch to expand PERF_EVENT_FLAG_ARCH
- Converted all BUILD_BUG_ON() into static_assert() 

Changes in V1:

https://lore.kernel.org/all/20220829065507.177781-1-anshuman.khandual@arm.com/

Cc: James Clark <james.clark@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: x86@...nel.org

Anshuman Khandual (4):
  perf/core: Expand PERF_EVENT_FLAG_ARCH
  perf/core: Assert PERF_EVENT_FLAG_ARCH does not overlap with generic flags
  arm64/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH
  x86/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH

 arch/x86/events/perf_event.h       | 34 ++++++++++++++----------------
 arch/x86/events/perf_event_flags.h | 22 +++++++++++++++++++
 drivers/perf/arm_spe_pmu.c         |  4 +++-
 include/linux/perf/arm_pmu.h       |  9 ++++----
 include/linux/perf_event.h         |  4 +++-
 5 files changed, 49 insertions(+), 24 deletions(-)
 create mode 100644 arch/x86/events/perf_event_flags.h

-- 
2.25.1