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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-11-26 19:59:28 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-12-02 17:48:50 +1100 |
| commit | 71c235027ce7940434acd3f553602ad8b5d36469 (patch) | |
| tree | 9ca3b2ccacfc193106ade427e998f74f0e8b7616 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | powerpc/qspinlock: allow lock stealing in trylock and lock fastpath (diff) | |
| download | linux-71c235027ce7940434acd3f553602ad8b5d36469.tar.gz linux-71c235027ce7940434acd3f553602ad8b5d36469.zip | |
powerpc/qspinlock: use spin_begin/end API
Use the spin_begin/spin_cpu_relax/spin_end APIs in qspinlock, which helps
to prevent threads issuing a lot of expensive priority nops which may not
have much effect due to immediately executing low then medium priority.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221126095932.1234527-14-npiggin@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
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