e1c68ebed9
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. Bug: 120440300 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: 804d402fb6f6 ("sched/rt: Make RT capacity-aware") Link: https://lkml.kernel.org/r/20200302132721.8353-4-qais.yousef@arm.com (cherry picked from commit a1bd02e1f28b1939cac8c64072a0e578c3cbc345) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I8d72829d0026219ad7d46633c30cb2653343360c
30 lines
770 B
C
30 lines
770 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#define CPUPRI_NR_PRIORITIES (MAX_RT_PRIO + 2)
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#define CPUPRI_INVALID -1
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#define CPUPRI_IDLE 0
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#define CPUPRI_NORMAL 1
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/* values 2-101 are RT priorities 0-99 */
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struct cpupri_vec {
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atomic_t count;
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cpumask_var_t mask;
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};
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struct cpupri {
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struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES];
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int *cpu_to_pri;
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};
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#ifdef CONFIG_SMP
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int cpupri_find(struct cpupri *cp, struct task_struct *p,
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struct cpumask *lowest_mask);
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int cpupri_find_fitness(struct cpupri *cp, struct task_struct *p,
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struct cpumask *lowest_mask,
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bool (*fitness_fn)(struct task_struct *p, int cpu));
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void cpupri_set(struct cpupri *cp, int cpu, int pri);
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int cpupri_init(struct cpupri *cp);
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void cpupri_cleanup(struct cpupri *cp);
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#endif
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