Messages in this thread | | | From | "Eric W. Biederman" <> | Date | Sun, 26 Jun 2022 14:14:45 -0500 | Subject | [PATCH 0/3] kthread: Stop using TASK_UNINTERRUPTIBLE |
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Being silly I figured I would poke my nose in and see how much work it is to never wake up kthreads until we are ready to use them.
This is my first draft at that and something that can hopefully shape the conversation on how we want to fix things a little bit.
The big thing that needs to happen that I haven't implemented is that kthread_run and kthread_run_on_cpu need to be uninlined and moved into kthread.c. This will allow them to call wake_up_new_task even from modular code.
The handful of drivers that are using kthread_create_on_node by extension need to be modified to use kthread_run or kthread_run_on_cpu.
Eric W. Biederman (3): kthread: Remove the flags argument from kernel_thread kthread: Replace kernel_thread with new_kthread kthread: Stop abusing TASK_UNINTERRUPTIBLE (INCOMPLETE)
arch/arm/common/bL_switcher.c | 2 +- arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 4 +- drivers/block/mtip32xx/mtip32xx.c | 2 +- drivers/firmware/psci/psci_checker.c | 2 +- drivers/firmware/stratix10-svc.c | 4 +- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 2 +- drivers/scsi/bnx2i/bnx2i_init.c | 2 +- drivers/scsi/qedi/qedi_main.c | 2 +- include/linux/kthread.h | 4 +- include/linux/sched/task.h | 2 +- init/main.c | 6 +- kernel/bpf/cpumap.c | 2 +- kernel/dma/map_benchmark.c | 2 +- kernel/fork.c | 5 +- kernel/kthread.c | 120 +++++++++++++++--------------- kernel/smpboot.c | 1 + kernel/workqueue.c | 2 +- net/core/pktgen.c | 2 +- net/sunrpc/svc.c | 2 +- 19 files changed, 82 insertions(+), 86 deletions(-)
Eric
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