mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
a1bd02e1f2
By introducing a new cpupri_find_fitness() function that takes the
fitness_fn as an argument and only called when asym_system static key is
enabled.
cpupri_find() is now a wrapper function that calls cpupri_find_fitness()
passing NULL as a fitness_fn, hence disabling the logic that handles
fitness by default.
LINK: https://lore.kernel.org/lkml/c0772fca-0a4b-c88d-fdf2-5715fcf8447b@arm.com/
Reported-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fixes: 804d402fb6 ("sched/rt: Make RT capacity-aware")
Link: https://lkml.kernel.org/r/20200302132721.8353-4-qais.yousef@arm.com
30 lines
770 B
C
30 lines
770 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#define CPUPRI_NR_PRIORITIES (MAX_RT_PRIO + 2)
|
|
|
|
#define CPUPRI_INVALID -1
|
|
#define CPUPRI_IDLE 0
|
|
#define CPUPRI_NORMAL 1
|
|
/* values 2-101 are RT priorities 0-99 */
|
|
|
|
struct cpupri_vec {
|
|
atomic_t count;
|
|
cpumask_var_t mask;
|
|
};
|
|
|
|
struct cpupri {
|
|
struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES];
|
|
int *cpu_to_pri;
|
|
};
|
|
|
|
#ifdef CONFIG_SMP
|
|
int cpupri_find(struct cpupri *cp, struct task_struct *p,
|
|
struct cpumask *lowest_mask);
|
|
int cpupri_find_fitness(struct cpupri *cp, struct task_struct *p,
|
|
struct cpumask *lowest_mask,
|
|
bool (*fitness_fn)(struct task_struct *p, int cpu));
|
|
void cpupri_set(struct cpupri *cp, int cpu, int pri);
|
|
int cpupri_init(struct cpupri *cp);
|
|
void cpupri_cleanup(struct cpupri *cp);
|
|
#endif
|