diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2019-08-01 13:13:53 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-08-02 12:15:24 +0100 |
| commit | 4ff13d00ebd5533947b083c66d44da3243a2d559 (patch) | |
| tree | b56d260b0aac8e4500b479ad5504b9b0af7e5c03 /drivers | |
| parent | cc8b4659491d23577eb8992449d82c7f4f4fc170 (diff) | |
spi: Reduce kthread priority
The SPI thingies request FIFO-99 by default, reduce this to FIFO-50.
FIFO-99 is the very highest priority available to SCHED_FIFO and
it not a suitable default; it would indicate the SPI work is the
most important work on the machine.
Cc: Benson Leung <bleung@chromium.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-spi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20190801111541.917256884@infradead.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_spi.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c index 006a8ff64057..714306bc3f79 100644 --- a/drivers/platform/chrome/cros_ec_spi.c +++ b/drivers/platform/chrome/cros_ec_spi.c @@ -706,7 +706,7 @@ static int cros_ec_spi_devm_high_pri_alloc(struct device *dev, struct cros_ec_spi *ec_spi) { struct sched_param sched_priority = { - .sched_priority = MAX_RT_PRIO - 1, + .sched_priority = MAX_RT_PRIO / 2, }; int err; diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 9fd7926e80c0..8e83c9567353 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1434,7 +1434,7 @@ static void spi_pump_messages(struct kthread_work *work) */ static void spi_set_thread_rt(struct spi_controller *ctlr) { - struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 }; + struct sched_param param = { .sched_priority = MAX_RT_PRIO / 2 }; dev_info(&ctlr->dev, "will run message pump with realtime priority\n"); |