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| author | Ahmed S. Darwish <a.darwish@linutronix.de> | 2020-07-20 18:55:09 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-07-29 17:14:23 +0300 |
| commit | d3b35b87f436c1b226a8061bee9c8875ba6658bd (patch) | |
| tree | cad4767b0a4fdc9e78dbb30128c0654e81fcf2af /scripts/gdb/linux/utils.py | |
| parent | 15cbe67bbd3adeb4854c42713dbeaf2ff876beee (diff) | |
| download | linux-d3b35b87f436c1b226a8061bee9c8875ba6658bd.tar.xz | |
seqlock: seqcount_t latch: End read sections with read_seqcount_retry()
The seqcount_t latch reader example at the raw_write_seqcount_latch()
kernel-doc comment ends the latch read section with a manual smp memory
barrier and sequence counter comparison.
This is technically correct, but it is suboptimal: read_seqcount_retry()
already contains the same logic of an smp memory barrier and sequence
counter comparison.
End the latch read critical section example with read_seqcount_retry().
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200720155530.1173732-4-a.darwish@linutronix.de
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions