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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2026-08-24 16:27:24 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-09-02 13:10:45 +0200 |
| commit | 74d55a827e31bc8a75fbc530951c6266d043ecc0 (patch) | |
| tree | 64cbe1eaf9952ba1acefaea99af406f0550322c9 /kernel/events | |
| parent | 3807f6996a0bd9515ff69f3040d6e47f7b20e7a5 (diff) | |
perf/x86: Support OPMASK sampling using sample_simd_pred_reg_* fields
Support sampling of OPMASK registers via the sample_simd_pred_reg_*
fields.
Each OPMASK register consists of 1 u64 word. Current x86 hardware
supports 8 OPMASK registers. The perf_simd_reg_value() function is
responsible for outputting OPMASK value to userspace.
Additionally, sample_simd_pred_reg_qwords should be set to 1 to indicate
OPMASK sampling.
OPMASK sampling will be enabled in a subsequent patch that sets
PERF_PMU_CAP_SIMD_REGS.
Co-developed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260824082731.1013973-17-dapeng1.mi@linux.intel.com
Diffstat (limited to 'kernel/events')
0 files changed, 0 insertions, 0 deletions