Messages in this thread Patch in this message | | | From | Gao Xiang <> | Subject | [PATCH] erofs: use HIPRI by default if per-cpu kthreads are enabled | Date | Mon, 22 May 2023 17:21:41 +0800 |
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As Sandeep shown [1], high priority RT per-cpu kthreads are typically helpful for Android scenarios to minimize the scheduling latencies.
Switch EROFS_FS_PCPU_KTHREAD_HIPRI on by default if EROFS_FS_PCPU_KTHREAD is on since it's the typical use cases for EROFS_FS_PCPU_KTHREAD.
Also clean up unneeded sched_set_normal().
[1] https://lore.kernel.org/r/CAB=BE-SBtO6vcoyLNA9F-9VaN5R0t3o_Zn+FW8GbO6wyUqFneQ@mail.gmail.com Cc: Sandeep Dhavale <dhavale@google.com> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> --- fs/erofs/Kconfig | 1 + fs/erofs/zdata.c | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/erofs/Kconfig b/fs/erofs/Kconfig index 704fb59577e0..f259d92c9720 100644 --- a/fs/erofs/Kconfig +++ b/fs/erofs/Kconfig @@ -121,6 +121,7 @@ config EROFS_FS_PCPU_KTHREAD config EROFS_FS_PCPU_KTHREAD_HIPRI bool "EROFS high priority per-CPU kthread workers" depends on EROFS_FS_ZIP && EROFS_FS_PCPU_KTHREAD + default y help This permits EROFS to configure per-CPU kthread workers to run at higher priority. diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index 92f3a01262cf..3ba505434f03 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -367,8 +367,6 @@ static struct kthread_worker *erofs_init_percpu_worker(int cpu) return worker; if (IS_ENABLED(CONFIG_EROFS_FS_PCPU_KTHREAD_HIPRI)) sched_set_fifo_low(worker->task); - else - sched_set_normal(worker->task, 0); return worker; } -- 2.24.4
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