diff options
| author | Nicholas Miehlbradt <nicholas@linux.ibm.com> | 2024-04-08 08:23:58 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-04-15 05:53:39 +0300 |
| commit | 676b2f99b0f6cd11193eeae13c976565c3fc7545 (patch) | |
| tree | fd5692814cfee5729a7b9e6c13543aeee269643d /tools/perf/scripts/python/sched-migration.py | |
| parent | 676abf7c39267080ab81597c6d4f372a10c0fc21 (diff) | |
| download | linux-676b2f99b0f6cd11193eeae13c976565c3fc7545.tar.xz | |
powerpc: Add static_key_feature_checks_initialized flag
JUMP_LABEL_FEATURE_CHECK_DEBUG used static_key_intialized to determine
whether {cpu,mmu}_has_feature() is used before static keys were
initialized. However, {cpu,mmu}_has_feature() should not be used before
setup_feature_keys() is called but static_key_initialized is set well
before this by the call to jump_label_init() in early_init_devtree().
This creates a window in which JUMP_LABEL_FEATURE_CHECK_DEBUG will not
detect misuse and report errors. Add a flag specifically to indicate
when {cpu,mmu}_has_feature() is safe to use.
Signed-off-by: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240408052358.5030-1-nicholas@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')
0 files changed, 0 insertions, 0 deletions