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| author | Dietmar Eggemann <dietmar.eggemann@arm.com> | 2021-01-28 14:10:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-02-17 14:08:17 +0100 |
| commit | 9d061ba6bc170045857f3efe0bba5def30188d4d (patch) | |
| tree | b0512144f9f9c2d3438b1809f69e0b3860c57665 /include/linux/sched/prio.h | |
| parent | ae18ad281e825993d190073d0ae2ea35dee27ee1 (diff) | |
| download | linux-stable-9d061ba6bc170045857f3efe0bba5def30188d4d.tar.gz linux-stable-9d061ba6bc170045857f3efe0bba5def30188d4d.tar.bz2 linux-stable-9d061ba6bc170045857f3efe0bba5def30188d4d.zip | |
sched: Remove USER_PRIO, TASK_USER_PRIO and MAX_USER_PRIO
The only remaining use of MAX_USER_PRIO (and USER_PRIO) is the
SCALE_PRIO() definition in the PowerPC Cell architecture's Synergistic
Processor Unit (SPU) scheduler. TASK_USER_PRIO isn't used anymore.
Commit fe443ef2ac42 ("[POWERPC] spusched: Dynamic timeslicing for
SCHED_OTHER") copied SCALE_PRIO() from the task scheduler in v2.6.23.
Commit a4ec24b48dde ("sched: tidy up SCHED_RR") removed it from the task
scheduler in v2.6.24.
Commit 3ee237dddcd8 ("sched/prio: Add 3 macros of MAX_NICE, MIN_NICE and
NICE_WIDTH in prio.h") introduced NICE_WIDTH much later.
With:
MAX_USER_PRIO = USER_PRIO(MAX_PRIO)
= MAX_PRIO - MAX_RT_PRIO
MAX_PRIO = MAX_RT_PRIO + NICE_WIDTH
MAX_USER_PRIO = MAX_RT_PRIO + NICE_WIDTH - MAX_RT_PRIO
MAX_USER_PRIO = NICE_WIDTH
MAX_USER_PRIO can be replaced by NICE_WIDTH to be able to remove all the
{*_}USER_PRIO defines.
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/20210128131040.296856-3-dietmar.eggemann@arm.com
Diffstat (limited to 'include/linux/sched/prio.h')
| -rw-r--r-- | include/linux/sched/prio.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index d111f2fd77ea..ab83d85e1183 100644 --- a/include/linux/sched/prio.h +++ b/include/linux/sched/prio.h @@ -27,15 +27,6 @@ #define PRIO_TO_NICE(prio) ((prio) - DEFAULT_PRIO) /* - * 'User priority' is the nice value converted to something we - * can work with better when scaling various scheduler parameters, - * it's a [ 0 ... 39 ] range. - */ -#define USER_PRIO(p) ((p)-MAX_RT_PRIO) -#define TASK_USER_PRIO(p) USER_PRIO((p)->static_prio) -#define MAX_USER_PRIO (USER_PRIO(MAX_PRIO)) - -/* * Convert nice value [19,-20] to rlimit style value [1,40]. */ static inline long nice_to_rlimit(long nice) |