Messages in this thread Patch in this message | | | Date | Wed, 17 Feb 2021 13:17:36 -0000 | From | "tip-bot2 for Dietmar Eggemann" <> | Subject | [tip: sched/core] sched/core: Update task_prio() function header |
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The following commit has been merged into the sched/core branch of tip:
Commit-ID: c541bb7835a306cdbbe8abbdf4e4df507e0ca27a Gitweb: https://git.kernel.org/tip/c541bb7835a306cdbbe8abbdf4e4df507e0ca27a Author: Dietmar Eggemann <dietmar.eggemann@arm.com> AuthorDate: Thu, 28 Jan 2021 14:10:40 +01:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Wed, 17 Feb 2021 14:08:30 +01:00
sched/core: Update task_prio() function header
The description of the RT offset and the values for 'normal' tasks needs update. Moreover there are DL tasks now. task_prio() has to stay like it is to guarantee compatibility with the /proc/<pid>/stat priority field:
# cat /proc/<pid>/stat | awk '{ print $18; }'
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20210128131040.296856-4-dietmar.eggemann@arm.com --- kernel/sched/core.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f0b0b67..4afbdd2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5616,8 +5616,12 @@ SYSCALL_DEFINE1(nice, int, increment) * @p: the task in question. * * Return: The priority value as seen by users in /proc. - * RT tasks are offset by -200. Normal tasks are centered - * around 0, value goes from -16 to +15. + * + * sched policy return value kernel prio user prio/nice + * + * normal, batch, idle [0 ... 39] [100 ... 139] 0/[-20 ... 19] + * fifo, rr [-2 ... -100] [98 ... 0] [1 ... 99] + * deadline -101 -1 0 */ int task_prio(const struct task_struct *p) {
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