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| author | James Clark <james.clark@linaro.org> | 2025-03-25 11:58:47 +0000 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2025-04-30 14:58:18 +0100 |
| commit | a4e65842e1142aa18ef36113fbd81d614eaefe5a (patch) | |
| tree | 7f4701bbbc9ba01a095e7218f9d5e53fc2716eb5 /tools/perf/scripts/python/syscall-counts.py | |
| parent | fc7fed6f77f94f2fd9a7557020503e146eb0ce38 (diff) | |
coresight: Only check bottom two claim bits
The use of the whole register and == could break the claim mechanism if
any of the other bits are used in the future. The referenced doc "PSCI -
ARM DEN 0022D" also says to only read and clear the bottom two bits.
Use FIELD_GET() to extract only the relevant part.
Reviewed-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-2-dfbd3822b2e5@linaro.org
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions