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| author | Heiko Carstens <hca@linux.ibm.com> | 2025-02-07 15:48:49 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2025-03-04 17:18:04 +0100 |
| commit | 42805261fcea809e1e76243dfc5218f6f12c1614 (patch) | |
| tree | 60fdd12746484a286233fcfd1a738990752629ee /tools/perf/scripts/python | |
| parent | s390/cpufeature: Convert MACHINE_HAS_RDP to cpu_has_rdp() (diff) | |
| download | linux-42805261fcea809e1e76243dfc5218f6f12c1614.tar.gz linux-42805261fcea809e1e76243dfc5218f6f12c1614.zip | |
s390/cpufeature: Convert MACHINE_HAS_GS to cpu_has_gs()
Convert MACHINE_HAS_... to cpu_has_...() which uses test_facility() instead
of testing the machine_flags lowcore member if the feature is present.
test_facility() generates better code since it results in a static branch
without accessing memory. The branch is patched via alternatives by the
decompressor depending on the availability of the required facility.
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions