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be41bde4c3
linux/kernel/sched
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John Stultz be41bde4c3 sched: Add an initial sketch of the find_proxy_task() function 
Add a find_proxy_task() function which doesn't do much.

When we select a blocked task to run, we will just deactivate it
and pick again. The exception being if it has become unblocked
after find_proxy_task() was called.

This allows us to validate keeping blocked tasks on the runqueue
and later deactivating them is working ok, stressing the failure
cases for when a proxy isn't found.

Greatly simplified from patch by:
  Peter Zijlstra (Intel) <peterz@infradead.org>
  Juri Lelli <juri.lelli@redhat.com>
  Valentin Schneider <valentin.schneider@arm.com>
  Connor O'Brien <connoro@google.com>

[jstultz: Split out from larger proxy patch and simplified
 for review and testing.]
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://lkml.kernel.org/r/20250712033407.2383110-7-jstultz@google.com
2025-07-14 17:16:32 +02:00
..
autogroup.c sched: Clean up and standardize #if/#else/#endif markers in sched/autogroup.[ch] 2025-06-13 08:47:14 +02:00
autogroup.h sched: Clean up and standardize #if/#else/#endif markers in sched/autogroup.[ch] 2025-06-13 08:47:14 +02:00
build_policy.c sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
build_utility.c sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
clock.c sched: Clean up and standardize #if/#else/#endif markers in sched/clock.c 2025-06-13 08:47:14 +02:00
completion.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
core_sched.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
core.c sched: Add an initial sketch of the find_proxy_task() function 2025-07-14 17:16:32 +02:00
cpuacct.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
cpudeadline.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
cpudeadline.h sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
cpufreq_schedutil.c sched: Clean up and standardize #if/#else/#endif markers in sched/cpufreq_schedutil.c 2025-06-13 08:47:15 +02:00
cpufreq.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
cpupri.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
cpupri.h sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
cputime.c sched: Clean up and standardize #if/#else/#endif markers in sched/cputime.c 2025-06-13 08:47:15 +02:00
deadline.c Merge branch 'tip/sched/urgent' 2025-07-14 17:16:28 +02:00
debug.c Merge branch 'tip/sched/urgent' 2025-07-14 17:16:28 +02:00
ext_idle.c sched_ext: idle: Skip cross-node search with !CONFIG_NUMA 2025-06-03 08:22:27 -10:00
ext_idle.h sched_ext: idle: Explicitly pass allowed cpumask to scx_select_cpu_dfl() 2025-04-07 07:13:52 -10:00
ext.c sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() 2025-06-17 08:19:55 -10:00
ext.h sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() 2025-06-17 08:19:55 -10:00
fair.c sched: Fix runtime accounting w/ split exec & sched contexts 2025-07-14 17:16:32 +02:00
features.h sched/fair: Untangle NEXT_BUDDY and pick_next_task() 2024-12-09 11:48:13 +01:00
idle.c sched/smp: Use the SMP version of the idle scheduling class 2025-06-13 08:47:21 +02:00
isolation.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
loadavg.c Merge branch 'tip/sched/urgent' 2025-07-14 17:16:28 +02:00
Makefile tracing: Disable branch profiling in noinstr code 2025-03-22 09:49:26 +01:00
membarrier.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
pelt.c sched: Clean up and standardize #if/#else/#endif markers in sched/pelt.[ch] 2025-06-13 08:47:17 +02:00
pelt.h sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
psi.c sched/psi: Optimize psi_group_change() cpu_clock() usage 2025-07-09 13:40:21 +02:00
rt.c sched/deadline: Fix accounting after global limits change 2025-07-14 10:59:33 +02:00
sched-pelt.h sched: Make clangd usable 2025-06-11 11:20:53 +02:00
sched.h sched: Add an initial sketch of the find_proxy_task() function 2025-07-14 17:16:32 +02:00
smp.h sched: Make clangd usable 2025-06-11 11:20:53 +02:00
stats.c sched/smp: Use the SMP version of schedstats 2025-06-13 08:47:21 +02:00
stats.h sched: Clean up and standardize #if/#else/#endif markers in sched/stats.[ch] 2025-06-13 08:47:17 +02:00
stop_task.c sched/smp: Use the SMP version of the stop-CPU scheduling class 2025-06-13 08:47:21 +02:00
swait.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
syscalls.c sched/smp: Use the SMP version of the scheduler syscalls 2025-06-13 08:47:21 +02:00
topology.c sched/topology: Remove sched_domain_topology_level::flags 2025-07-14 10:59:35 +02:00
wait_bit.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
wait.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00