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f4bb570511
linux/kernel/sched
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Ingo Molnar f4bb570511 sched/nohz: Remove unnecessarily complex error handling pattern from find_new_ilb() 
find_new_ilb() returns nr_cpu_ids on failure - which is the usual
cpumask bitops return pattern, but is weird & unnecessary in this
context: not only is it a global variable, it it is a +1 out of
bounds CPU index and also has different signedness ...

Its only user, kick_ilb(), then checks the return against nr_cpu_ids
to decide to return. There's no other use.

So instead of this, use a standard -1 return on failure to find an
idle CPU, as the argument is signed already.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20231006102518.2452758-4-mingo@kernel.org
2023-10-09 12:21:23 +02:00
..
autogroup.c sched/all: Change all BUG_ON() instances in the scheduler to WARN_ON_ONCE() 2022-08-12 11:25:10 +02:00
autogroup.h
build_policy.c
build_utility.c sched/headers: Remove duplicate header inclusions 2023-10-03 21:27:55 +02:00
clock.c Locking changes for v6.5: 2023-06-27 14:14:30 -07:00
completion.c sched: add a few helpers to wake up tasks on the current cpu 2023-07-17 16:08:08 -07:00
core_sched.c sched: Rename task_running() to task_on_cpu() 2022-09-07 21:53:47 +02:00
core.c sched/debug: Print 'tgid' in sched_show_task() 2023-10-07 11:33:28 +02:00
cpuacct.c
cpudeadline.c sched/core: Introduce sched_asym_cpucap_active() 2022-08-02 12:32:45 +02:00
cpudeadline.h
cpufreq_schedutil.c cpufreq: schedutil: Update next_freq when cpufreq_limits change 2023-10-05 22:09:50 +02:00
cpufreq.c
cpupri.c sched/rt: Fix live lock between select_fallback_rq() and RT push 2023-09-28 22:58:13 +02:00
cpupri.h
cputime.c cputime: remove cputime_to_nsecs fallback 2022-12-27 12:52:17 +01:00
deadline.c sched/deadline: Make dl_rq->pushable_dl_tasks update drive dl_rq->overloaded 2023-09-29 10:20:21 +02:00
debug.c sched/deadline: Make dl_rq->pushable_dl_tasks update drive dl_rq->overloaded 2023-09-29 10:20:21 +02:00
fair.c sched/nohz: Remove unnecessarily complex error handling pattern from find_new_ilb() 2023-10-09 12:21:23 +02:00
features.h sched/eevdf: Curb wakeup-preemption 2023-08-17 17:07:07 +02:00
idle.c Merge branch 'sched/urgent' into sched/core, to pick up fixes and refresh the branch 2023-10-07 11:32:24 +02:00
isolation.c
loadavg.c
Makefile
membarrier.c sched/membarrier: Introduce MEMBARRIER_CMD_GET_REGISTRATIONS 2023-01-07 11:29:29 +01:00
pelt.c
pelt.h
psi.c Linux 6.5-rc2 2023-07-19 09:43:25 +02:00
rt.c sched/rt: Disallow writing invalid values to sched_rt_period_us 2023-10-02 15:15:56 +02:00
sched-pelt.h
sched.h sched/deadline: Make dl_rq->pushable_dl_tasks update drive dl_rq->overloaded 2023-09-29 10:20:21 +02:00
smp.h sched, smp: Trace smp callback causing an IPI 2023-03-24 11:01:29 +01:00
stats.c
stats.h sched/psi: Use task->psi_flags to clear in CPU migration 2022-10-30 10:12:15 +01:00
stop_task.c sched/fair: Rename check_preempt_curr() to wakeup_preempt() 2023-09-19 10:40:10 +02:00
swait.c sched: add a few helpers to wake up tasks on the current cpu 2023-07-17 16:08:08 -07:00
topology.c sched/topology: Fix sched_numa_find_nth_cpu() comment 2023-09-15 13:48:11 +02:00
wait_bit.c wait_on_bit: add an acquire memory barrier 2022-08-26 09:30:25 -07:00
wait.c sched: add a few helpers to wake up tasks on the current cpu 2023-07-17 16:08:08 -07:00