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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-28 15:03:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-04-28 15:03:43 -0700 |
| commit | f20730efbd305d42eded761f6fbd9a59d6125228 (patch) | |
| tree | c9c553ff088fd788ac9149ca3f7a5c83cf8eaed6 /lib/Kconfig.debug | |
| parent | 586b222d748e91c619d68e9239654ebc7fed9b0c (diff) | |
| parent | 5c3124975e15c1fadd5af1c61e4d627cf6d97ba2 (diff) | |
| download | lwn-f20730efbd305d42eded761f6fbd9a59d6125228.tar.gz lwn-f20730efbd305d42eded761f6fbd9a59d6125228.zip | |
Merge tag 'smp-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP cross-CPU function-call updates from Ingo Molnar:
- Remove diagnostics and adjust config for CSD lock diagnostics
- Add a generic IPI-sending tracepoint, as currently there's no easy
way to instrument IPI origins: it's arch dependent and for some major
architectures it's not even consistently available.
* tag 'smp-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
trace,smp: Trace all smp_function_call*() invocations
trace: Add trace_ipi_send_cpu()
sched, smp: Trace smp callback causing an IPI
smp: reword smp call IPI comment
treewide: Trace IPIs sent via smp_send_reschedule()
irq_work: Trace self-IPIs sent via arch_irq_work_raise()
smp: Trace IPIs sent via arch_send_call_function_ipi_mask()
sched, smp: Trace IPIs sent via send_call_function_single_ipi()
trace: Add trace_ipi_send_cpumask()
kernel/smp: Make csdlock_debug= resettable
locking/csd_lock: Remove per-CPU data indirection from CSD lock debugging
locking/csd_lock: Remove added data from CSD lock debugging
locking/csd_lock: Add Kconfig option for csd_debug default
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index be272aa2fc0a..d49d7c5e12ec 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1490,6 +1490,15 @@ config CSD_LOCK_WAIT_DEBUG include the IPI handler function currently executing (if any) and relevant stack traces. +config CSD_LOCK_WAIT_DEBUG_DEFAULT + bool "Default csd_lock_wait() debugging on at boot time" + depends on CSD_LOCK_WAIT_DEBUG + depends on 64BIT + default n + help + This option causes the csdlock_debug= kernel boot parameter to + default to 1 (basic debugging) instead of 0 (no debugging). + endmenu # lock debugging config TRACE_IRQFLAGS |