On Wed, 11 May 2022 19:17:42 +0200
Uladzislau Rezki <urezki@xxxxxxxxx> wrote:
> OK. It was added on the latest kernel:
>
> root@pc638:/home/urezki# cat /sys/kernel/debug/tracing/trace_pipe
> vmalloc_test/0-1296 [062] b.... 18.157470: 0xffffffffc044e5dc: -> in the local_bh_disable()
>
> root@pc638:/home/urezki# cat /sys/kernel/debug/tracing/trace
> # tracer: nop
> #
> # entries-in-buffer/entries-written: 0/0 #P:64
> #
> # _-----=> irqs-off/BH-disabled
> # / _----=> need-resched
> # | / _---=> hardirq/softirq
> # || / _--=> preempt-depth
> # ||| / _-=> migrate-disable
> # |||| / delay
> # TASK-PID CPU# ||||| TIMESTAMP FUNCTION
> # | | | ||||| | |
> root@pc638:/home/urezki# uname -a
> Linux pc638 5.17.0-rc2-next-20220201 #63 SMP PREEMPT Tue May 10 20:39:08 CEST 2022 x86_64 GNU/Linux
> root@pc638:/home/urezki#
>
> so it shows *bh* disabled sections.
Ah yes. That was added with commit 289e7b0f7eb47 ("tracing: Account bottom
half disabled sections."). Maybe I should mark that as stable?
-- Steve
