Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH] perf: enum overflow in uapi/linux/perf_event.h | Date | Fri, 7 Sep 2018 13:27:19 +0000 (UTC) |
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On PPC32, enums are 32 bits, so __PERF_SAMPLE_CALLCHAIN_EARLY is out of scope. The following sparse warning is encountered:
CHECK arch/powerpc/kernel/process.c ./include/uapi/linux/perf_event.h:147:56: warning: cast truncates bits from constant value (8000000000000000 becomes 0)
This patch changes it to a #define
Fixes: 6cbc304f2f360 ("perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- include/uapi/linux/perf_event.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index eeb787b1c53c..27c7842bc86a 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -143,10 +143,10 @@ enum perf_event_sample_format { PERF_SAMPLE_PHYS_ADDR = 1U << 19, PERF_SAMPLE_MAX = 1U << 20, /* non-ABI */ - - __PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63, }; +#define __PERF_SAMPLE_CALLCHAIN_EARLY (1ULL << 63) + /* * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set * -- 2.13.3
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