diff options
| author | James Clark <[email protected]> | 2023-12-15 17:56:48 +0000 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2023-12-17 12:00:00 +0000 |
| commit | bb339db4d363c84e0a8d70827df591397ccd7312 (patch) | |
| tree | baa6e3cf71a383e809a112527f86ae8192aba83c | |
| parent | f56bb3de66bc7db90cd6df0a9866167e8a79317e (diff) | |
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 <[email protected]>
Closes: https://lore.kernel.org/linux-arm-kernel/[email protected]/
Signed-off-by: James Clark <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
| -rw-r--r-- | include/linux/perf/arm_pmuv3.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/perf/arm_pmuv3.h b/include/linux/perf/arm_pmuv3.h index 0f4d62ef3a9a..46377e134d67 100644 --- a/include/linux/perf/arm_pmuv3.h +++ b/include/linux/perf/arm_pmuv3.h @@ -234,8 +234,8 @@ * PMXEVTYPER: Event selection reg */ #define ARMV8_PMU_EVTYPE_EVENT GENMASK(15, 0) /* Mask for EVENT bits */ -#define ARMV8_PMU_EVTYPE_TH GENMASK(43, 32) -#define ARMV8_PMU_EVTYPE_TC GENMASK(63, 61) +#define ARMV8_PMU_EVTYPE_TH GENMASK_ULL(43, 32) /* arm64 only */ +#define ARMV8_PMU_EVTYPE_TC GENMASK_ULL(63, 61) /* arm64 only */ /* * Event filters for PMUv3 |