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https://github.com/followmsi/android_kernel_google_msm.git
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7e11629d0e
Use gcwq->worklist instead of cwq->worklist and break the strict association between a cwq and its worker. All works queued on a cpu are queued on gcwq->worklist and processed by any available worker on the gcwq. As there no longer is strict association between a cwq and its worker, whether a work is executing can now only be determined by calling [__]find_worker_executing_work(). After this change, the only association between a cwq and its worker is that a cwq puts a worker into shared worker pool on creation and kills it on destruction. As all workqueues are still limited to max_active of one, this means that there are always at least as many workers as active works and thus there's no danger for deadlock. The break of strong association between cwqs and workers requires somewhat clumsy changes to current_is_keventd() and destroy_workqueue(). Dynamic worker pool management will remove both clumsy changes. current_is_keventd() won't be necessary at all as the only reason it exists is to avoid queueing a work from a work which will be allowed just fine. The clumsy part of destroy_workqueue() is added because a worker can only be destroyed while idle and there's no guarantee a worker is idle when its wq is going down. With dynamic pool management, workers are not associated with workqueues at all and only idle ones will be submitted to destroy_workqueue() so the code won't be necessary anymore. Signed-off-by: Tejun Heo <tj@kernel.org> |
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| gcov | ||
| irq | ||
| power | ||
| time | ||
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| acct.c | ||
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| audit.c | ||
| audit.h | ||
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| bounds.c | ||
| capability.c | ||
| cgroup.c | ||
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| compat.c | ||
| configs.c | ||
| cpu.c | ||
| cpuset.c | ||
| cred.c | ||
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| dma.c | ||
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| elfcore.c | ||
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| exit.c | ||
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| hw_breakpoint.c | ||
| itimer.c | ||
| kallsyms.c | ||
| Kconfig.freezer | ||
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| Kconfig.locks | ||
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| kmod.c | ||
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| Makefile | ||
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| mutex-debug.c | ||
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| mutex.c | ||
| mutex.h | ||
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| panic.c | ||
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| perf_event.c | ||
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| pm_qos_params.c | ||
| posix-cpu-timers.c | ||
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| profile.c | ||
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| relay.c | ||
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| resource.c | ||
| rtmutex-debug.c | ||
| rtmutex-debug.h | ||
| rtmutex-tester.c | ||
| rtmutex.c | ||
| rtmutex.h | ||
| rtmutex_common.h | ||
| rwsem.c | ||
| sched.c | ||
| sched_clock.c | ||
| sched_cpupri.c | ||
| sched_cpupri.h | ||
| sched_debug.c | ||
| sched_fair.c | ||
| sched_features.h | ||
| sched_idletask.c | ||
| sched_rt.c | ||
| sched_stats.h | ||
| seccomp.c | ||
| semaphore.c | ||
| signal.c | ||
| slow-work-debugfs.c | ||
| slow-work.c | ||
| slow-work.h | ||
| smp.c | ||
| softirq.c | ||
| softlockup.c | ||
| spinlock.c | ||
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| stacktrace.c | ||
| stop_machine.c | ||
| sys.c | ||
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| sysctl.c | ||
| sysctl_binary.c | ||
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| taskstats.c | ||
| test_kprobes.c | ||
| time.c | ||
| timeconst.pl | ||
| timer.c | ||
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| user.c | ||
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| utsname.c | ||
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| wait.c | ||
| workqueue.c | ||
| workqueue_sched.h | ||