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Scheduler changes in this cycle were:

Browse source 
- Updates to scheduler metrics:
 
     - PELT fixes & enhancements
     - PSI fixes & enhancements
     - Refactor cpu_util_without()
 
  - Updates to instrumentation/debugging:
 
     - Remove sched_trace_*() helper functions - can be done via debug info
     - Fix double update_rq_clock() warnings
 
  - Introduce & use "preemption model accessors" to simplify some of
    the Kconfig complexity.
 
  - Make softirq handling RT-safe.
 
  - Misc smaller fixes & cleanups.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - Updates to scheduler metrics:
     - PELT fixes & enhancements
     - PSI fixes & enhancements
     - Refactor cpu_util_without()

 - Updates to instrumentation/debugging:
     - Remove sched_trace_*() helper functions - can be done via debug
       info
     - Fix double update_rq_clock() warnings

 - Introduce & use "preemption model accessors" to simplify some of the
   Kconfig complexity.

 - Make softirq handling RT-safe.

 - Misc smaller fixes & cleanups.

* tag 'sched-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  topology: Remove unused cpu_cluster_mask()
  sched: Reverse sched_class layout
  sched/deadline: Remove superfluous rq clock update in push_dl_task()
  sched/core: Avoid obvious double update_rq_clock warning
  smp: Make softirq handling RT safe in flush_smp_call_function_queue()
  smp: Rename flush_smp_call_function_from_idle()
  sched: Fix missing prototype warnings
  sched/fair: Remove cfs_rq_tg_path()
  sched/fair: Remove sched_trace_*() helper functions
  sched/fair: Refactor cpu_util_without()
  sched/fair: Revise comment about lb decision matrix
  sched/psi: report zeroes for CPU full at the system level
  sched/fair: Delete useless condition in tg_unthrottle_up()
  sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq
  sched/fair: Move calculate of avg_load to a better location
  mailmap: Update my email address to @redhat.com
  MAINTAINERS: Add myself as scheduler topology reviewer
  psi: Fix trigger being fired unexpectedly at initial
  ftrace: Use preemption model accessors for trace header printout
  kcsan: Use preemption model accessors
This commit is contained in:
Linus Torvalds 2022-05-24 11:11:13 -07:00
commit 6f3f04c190
23 changed files with 219 additions and 337 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/linux/interrupt.h
View file

@ -589,6 +589,15 @@ struct softirq_action
asmlinkage void do_softirq(void);
asmlinkage void __do_softirq(void);
#ifdef CONFIG_PREEMPT_RT
extern void do_softirq_post_smp_call_flush(unsigned int was_pending);
#else
static inline void do_softirq_post_smp_call_flush(unsigned int unused)
{
do_softirq();
}
#endif
extern void open_softirq(int nr, void (*action)(struct softirq_action *));
extern void softirq_init(void);
extern void __raise_softirq_irqoff(unsigned int nr);

16
include/linux/sched.h
View file

@ -2382,20 +2382,6 @@ static inline void rseq_syscall(struct pt_regs *regs)
#endif
const struct sched_avg *sched_trace_cfs_rq_avg(struct cfs_rq *cfs_rq);
char *sched_trace_cfs_rq_path(struct cfs_rq *cfs_rq, char *str, int len);
int sched_trace_cfs_rq_cpu(struct cfs_rq *cfs_rq);
const struct sched_avg *sched_trace_rq_avg_rt(struct rq *rq);
const struct sched_avg *sched_trace_rq_avg_dl(struct rq *rq);
const struct sched_avg *sched_trace_rq_avg_irq(struct rq *rq);
int sched_trace_rq_cpu(struct rq *rq);
int sched_trace_rq_cpu_capacity(struct rq *rq);
int sched_trace_rq_nr_running(struct rq *rq);
const struct cpumask *sched_trace_rd_span(struct root_domain *rd);
#ifdef CONFIG_SCHED_CORE
extern void sched_core_free(struct task_struct *tsk);
extern void sched_core_fork(struct task_struct *p);
@ -2406,4 +2392,6 @@ static inline void sched_core_free(struct task_struct *tsk) { }
static inline void sched_core_fork(struct task_struct *p) { }
#endif
extern void sched_set_stop_task(int cpu, struct task_struct *stop);
#endif

7
include/linux/topology.h
View file

@ -240,13 +240,6 @@ static inline const struct cpumask *cpu_smt_mask(int cpu)
}
#endif
#if defined(CONFIG_SCHED_CLUSTER) && !defined(cpu_cluster_mask)
static inline const struct cpumask *cpu_cluster_mask(int cpu)
{
return topology_cluster_cpumask(cpu);
}
#endif
static inline const struct cpumask *cpu_cpu_mask(int cpu)
{
return cpumask_of_node(cpu_to_node(cpu));