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| author |   Théo Lebrun <theo.lebrun@bootlin.com> | 2024-04-23 12:01:42 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2024-04-26 11:09:24 +0900 |
| commit | c1887396373b8faecef61d352bd521ac66162706 (patch) | |
| tree | 8a533995239bf7bedbcf8722857ca0fec27a445a /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | spi: cadence-qspi: add no-IRQ mode to indirect reads (diff) | |
| download | wireguard-linux-c1887396373b8faecef61d352bd521ac66162706.tar.xz wireguard-linux-c1887396373b8faecef61d352bd521ac66162706.zip | |
spi: cadence-qspi: add early busywait to cqspi_wait_for_bit()
Call readl_relaxed_poll_timeout() with no sleep at the start of
cqspi_wait_for_bit(). If its short timeout expires, a sleeping
readl_relaxed_poll_timeout() call takes the relay.
The reason is to avoid hrtimer interrupts on the system. All read
operations are expected to take less than 100µs.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240423-cdns-qspi-mbly-v4-3-3d2a7b535ad0@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions