Commit c541bb78 authored Jan 28, 2021 by Dietmar Eggemann Committed by Ingo Molnar Feb 17, 2021

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

parent 9d061ba6

kernel/sched/core.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -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)
		{