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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2026-08-24 16:27:21 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-09-02 13:10:44 +0200 |
| commit | e9d76ada769c45e5363306d22cb10b323f6dc4b5 (patch) | |
| tree | a7747aa6a049975e49d7c5989f85644fd05b2477 /tools/perf/scripts/python | |
| parent | 918b7d6d1729952d51da4fa81db7b366a207de8f (diff) | |
perf/x86: Support XMM sampling using sample_simd_vec_reg_* fields
Support sampling of XMM registers using the sample_simd_vec_reg_* fields.
When sample_simd_regs_enabled is set, the original XMM space in the
sample_regs_* field is treated as reserved. An INVAL error will be
reported to user space if any bit is set in the original XMM space while
sample_simd_regs_enabled is set.
The perf_reg_value function requires ABI information to understand the
layout of sample_regs. To accommodate this, a new abi field is introduced
in the struct x86_perf_regs to represent ABI information.
Additionally, the x86 specific perf_simd_reg_value() function is
implemented to retrieve the XMM register values.
XMM 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/20260824082731.1013973-14-dapeng1.mi@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions