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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-11-26 19:59:20 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-12-02 17:48:49 +1100 |
| commit | 0944534ef4d5cf39c8133575524be0be3337dd62 (patch) | |
| tree | ac26ea598a9071ed813e7bb32cad7e2aac730058 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | powerpc/qspinlock: allow new waiters to steal the lock before queueing (diff) | |
| download | linux-0944534ef4d5cf39c8133575524be0be3337dd62.tar.gz linux-0944534ef4d5cf39c8133575524be0be3337dd62.zip | |
powerpc/qspinlock: theft prevention to control latency
Give the queue head the ability to stop stealers. After a number of
spins without successfully acquiring the lock, the queue head sets
this, which halts stealing and will assure it is the next owner.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221126095932.1234527-6-npiggin@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions