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| author | Matt Turner <mattst88@gmail.com> | 2026-10-18 10:22:02 -0400 |
|---|---|---|
| committer | Magnus Lindholm <linmag7@gmail.com> | 2026-10-18 20:09:29 +0200 |
| commit | 501bcb5953cc4d56537a321c00f9193e9fd68718 (patch) | |
| tree | 3d372069a29e776a0ce899fd392fc2347e2f7b7c /tools/perf/scripts/python/flamegraph.py | |
| parent | bceba446fa2bc66a905ec0bbf6fd80e98701c1d1 (diff) | |
| download | linux-501bcb5953cc4d56537a321c00f9193e9fd68718.tar.gz linux-501bcb5953cc4d56537a321c00f9193e9fd68718.zip | |
alpha: stop storing the user stack pointer in pt_regs
Nothing reads pt_regs->usp now that user_stack_pointer() uses the PCB.
Drop the stores, which saves a PAL_rdusp call on every syscall, and
give the field back its old name.
Assisted-by: Claude:claude-opus-5-5
Reviewed-by: Magnus Lindholm <linmag7@gmail.com>
Tested-by: Magnus Lindholm <linmag7@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Link: https://lore.kernel.org/r/20261018-alpha-perf-regs-v3-v3-2-52be85332c57@gmail.com
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
0 files changed, 0 insertions, 0 deletions