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    Subject[PATCH 5.8 525/633] perf: correct SNOOPX field offset
    Date
    From: Al Grant <al.grant@foss.arm.com>

    [ Upstream commit f3d301c1f2f5676465cdf3259737ea19cc82731f ]

    perf_event.h has macros that define the field offsets in the
    data_src bitmask in perf records. The SNOOPX and REMOTE offsets
    were both 37. These are distinct fields, and the bitfield layout
    in perf_mem_data_src confirms that SNOOPX should be at offset 38.

    Fixes: 52839e653b5629bd ("perf tools: Add support for printing new mem_info encodings")
    Signed-off-by: Al Grant <al.grant@foss.arm.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Andi Kleen <ak@linux.intel.com>
    Link: https://lkml.kernel.org/r/4ac9f5cc-4388-b34a-9999-418a4099415d@foss.arm.com
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    include/uapi/linux/perf_event.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
    index 7b2d6fc9e6ed7..dc33e3051819d 100644
    --- a/include/uapi/linux/perf_event.h
    +++ b/include/uapi/linux/perf_event.h
    @@ -1155,7 +1155,7 @@ union perf_mem_data_src {

    #define PERF_MEM_SNOOPX_FWD 0x01 /* forward */
    /* 1 free */
    -#define PERF_MEM_SNOOPX_SHIFT 37
    +#define PERF_MEM_SNOOPX_SHIFT 38

    /* locked instruction */
    #define PERF_MEM_LOCK_NA 0x01 /* not available */
    --
    2.25.1


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