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| author | Dietmar Eggemann <dietmar.eggemann@arm.com> | 2021-01-28 16:10:40 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-02-17 16:08:30 +0300 |
| commit | c541bb7835a306cdbbe8abbdf4e4df507e0ca27a (patch) | |
| tree | 2559e3c649c457dd6db591a88768543c2a9cea08 /kernel/sched | |
| parent | 9d061ba6bc170045857f3efe0bba5def30188d4d (diff) | |
| download | linux-c541bb7835a306cdbbe8abbdf4e4df507e0ca27a.tar.xz | |
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
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f0b0b67fcdee..4afbdd27f46d 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) { |