Cyril Hrubis 6d01d5fde4 sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset ...

[ Upstream commit c1fc6484e1fb7cc2481d169bfef129a1b0676abe ]

The sched_rr_timeslice can be reset to default by writing value that is
<= 0. However after reading from this file we always got the last value
written, which is not useful at all.

$ echo -1 > /proc/sys/kernel/sched_rr_timeslice_ms
$ cat /proc/sys/kernel/sched_rr_timeslice_ms
-1

Fix this by setting the variable that holds the sysctl file value to the
jiffies_to_msecs(RR_TIMESLICE) in case that <= 0 value was written.

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Acked-by: Mel Gorman <mgorman@suse.de>
Tested-by: Petr Vorel <pvorel@suse.cz>
Link: https://lore.kernel.org/r/20230802151906.25258-3-chrubis@suse.cz
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 1f80bc015277247c9fd9646f7c21f1c728b5d908)
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>

2024-03-21 13:32:16 +00:00

..

autogroup.c

sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]

2018-05-16 10:10:30 +02:00

autogroup.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

clock.c

…

completion.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

core.c

sched_getaffinity: don't assume 'cpumask_size()' is fully initialized

2023-04-05 11:14:19 +02:00

cpuacct.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpuacct.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpudeadline.c

sched/deadline: Change return value of cpudl_find()

2017-08-10 12:18:17 +02:00

cpudeadline.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpufreq_schedutil.c

cpufreq: schedutil: Use kobject release() method to free sugov_tunables

2021-10-06 15:05:08 +02:00

cpufreq.c

…

cpupri.c

sched/cpupri: Don't re-initialize 'struct cpupri'

2017-08-10 12:18:14 +02:00

cpupri.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cputime.c

cputime, cpuacct: Include guest time in user time in cpuacct.stat

2022-01-27 09:00:59 +01:00

deadline.c

sched/deadline: Fix sched_dl_global_validate()

2020-12-29 13:46:51 +01:00

debug.c

sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa

2022-04-20 09:08:13 +02:00

fair.c

sched/fair: Don't balance task to its current running CPU

2023-08-11 11:33:48 +02:00

features.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

idle_task.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

idle.c

PM / s2idle: Rename ->enter_freeze to ->enter_s2idle

2017-08-11 01:29:56 +02:00

loadavg.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

membarrier.c

sched/membarrier: reduce the ability to hammer on sys_membarrier

2024-03-08 08:21:39 +00:00

rt.c

sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset

2024-03-21 13:32:16 +00:00

sched-pelt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sched.h

sched/deadline: Fix sched_dl_global_validate()

2020-12-29 13:46:51 +01:00

stats.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

stats.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

stop_task.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swait.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

topology.c

sched: correct SD_flags returned by tl->sd_flags()

2020-08-21 09:48:02 +02:00

wait_bit.c

sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming

2017-06-20 12:19:14 +02:00

wait.c

wait: add wake_up_pollfree()

2021-12-14 10:16:55 +01:00