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| author | James Clark <james.clark@arm.com> | 2023-12-15 20:56:48 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-12-17 15:00:00 +0300 |
| commit | bb339db4d363c84e0a8d70827df591397ccd7312 (patch) | |
| tree | baa6e3cf71a383e809a112527f86ae8192aba83c /Documentation/arch/arm64 | |
| parent | f56bb3de66bc7db90cd6df0a9866167e8a79317e (diff) | |
| download | linux-bb339db4d363c84e0a8d70827df591397ccd7312.tar.xz | |
arm: perf: Fix ARCH=arm build with GCC
LLVM ignores everything inside the if statement and doesn't generate
errors, but GCC doesn't ignore it, resulting in the following error:
drivers/perf/arm_pmuv3.c: In function ‘armv8pmu_write_evtype’:
include/linux/bits.h:34:29: error: left shift count >= width of type [-Werror=shift-count-overflow]
34 | (((~UL(0)) - (UL(1) << (l)) + 1) & \
Fix it by using GENMASK_ULL which doesn't overflow on arm32 (even though
the value is never used there).
Fixes: 3115ee021bfb ("arm64: perf: Include threshold control fields in PMEVTYPER mask")
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Closes: https://lore.kernel.org/linux-arm-kernel/20231215120817.h2f3akgv72zhrtqo@pengutronix.de/
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231215175648.3397170-2-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/arch/arm64')
0 files changed, 0 insertions, 0 deletions