Wander Lairson Costa 361c81dbc5 blktrace: switch trace spinlock to a raw spinlock ...

The running_trace_lock protects running_trace_list and is acquired
within the tracepoint which implies disabled preemption. The spinlock_t
typed lock can not be acquired with disabled preemption on PREEMPT_RT
because it becomes a sleeping lock.
The runtime of the tracepoint depends on the number of entries in
running_trace_list and has no limit. The blk-tracer is considered debug
code and higher latencies here are okay.

Make running_trace_lock a raw_spinlock_t.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Link: https://lore.kernel.org/r/20211220192827.38297-1-wander@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2021-12-20 13:50:14 -07:00

..

blktrace.c

blktrace: switch trace spinlock to a raw spinlock

2021-12-20 13:50:14 -07:00

bpf_trace.c

bpf: Forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs

2021-11-15 20:35:58 -08:00

bpf_trace.h

…

error_report-traces.c

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fgraph.c

x86/ftrace: Make function graph use ftrace directly

2021-10-20 23:44:43 -04:00

ftrace_internal.h

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ftrace.c

Merge tag 'trace-v5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2021-11-11 10:16:33 -08:00

Kconfig

tracing: Simplify the Kconfig dependency of FTRACE

2021-08-16 11:37:20 -04:00

kprobe_event_gen_test.c

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Makefile

tracing: Place trace_pid_list logic into abstract functions

2021-10-05 17:30:08 -04:00

pid_list.c

tracing: Initialize upper and lower vars in pid_list_refill_irq()

2021-10-07 09:56:38 -04:00

pid_list.h

tracing: Create a sparse bitmask for pid filtering

2021-10-05 17:38:45 -04:00

power-traces.c

…

preemptirq_delay_test.c

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ring_buffer_benchmark.c

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ring_buffer.c

ring-buffer: Protect ring_buffer_reset() from reentrancy

2021-11-10 11:56:29 -05:00

rpm-traces.c

…

synth_event_gen_test.c

…

trace_benchmark.c

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trace_benchmark.h

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trace_boot.c

tracing: Fix missing trace_boot_init_histograms kstrdup NULL checks

2021-10-26 09:18:10 -04:00

trace_branch.c

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trace_clock.c

tracing: Do no increment trace_clock_global() by one

2021-06-18 09:10:00 -04:00

trace_dynevent.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_dynevent.h

tracing: Add DYNAMIC flag for dynamic events

2021-08-18 18:10:32 -04:00

trace_entries.h

trace: Add timerlat tracer

2021-06-25 19:57:24 -04:00

trace_eprobe.c

tracing: Fix misspelling of "missing"

2021-10-29 09:54:14 -04:00

trace_event_perf.c

tracing: Show size of requested perf buffer

2021-10-27 12:25:09 -04:00

trace_events_filter_test.h

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trace_events_filter.c

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trace_events_hist.c

tracing/histogram: Fix UAF in destroy_hist_field()

2021-11-18 13:53:43 -05:00

trace_events_inject.c

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trace_events_synth.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_events_trigger.c

tracing: Add a probe that attaches to trace events

2021-08-20 14:18:40 -04:00

trace_events.c

tracing: Test the 'Do not trace this pid' case in create event

2021-11-27 16:50:43 -05:00

trace_export.c

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trace_functions_graph.c

tracing: in_irq() cleanup

2021-10-13 18:19:41 -04:00

trace_functions.c

ftrace: disable preemption when recursion locked

2021-10-27 11:21:49 -04:00

trace_hwlat.c

tracing/hwlat: Make some internal symbols static

2021-10-26 09:18:28 -04:00

trace_irqsoff.c

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trace_kdb.c

kdb: Rename members of struct kdbtab_t

2021-07-27 17:05:06 +01:00

trace_kprobe_selftest.c

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trace_kprobe_selftest.h

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trace_kprobe.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_mmiotrace.c

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trace_nop.c

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trace_osnoise.c

tracing/osnoise: Make osnoise_instances static

2021-11-12 09:25:59 -05:00

trace_output.c

tracing: Show kretprobe unknown indicator only for kretprobe_trampoline

2021-09-30 21:24:08 -04:00

trace_output.h

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trace_preemptirq.c

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trace_printk.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_probe_tmpl.h

tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs

2021-08-19 09:09:03 -04:00

trace_probe.c

tracing: Add a probe that attaches to trace events

2021-08-20 14:18:40 -04:00

trace_probe.h

tracing: Add a probe that attaches to trace events

2021-08-20 14:18:40 -04:00

trace_recursion_record.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_sched_switch.c

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trace_sched_wakeup.c

tracing: Change variable type as bool for clean-up

2021-06-30 09:19:14 -04:00

trace_selftest_dynamic.c

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trace_selftest.c

tracing: Fix selftest config check for function graph start up test

2021-10-21 14:18:48 -04:00

trace_seq.c

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trace_stack.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_stat.c

tracing: Disable "other" permission bits in the tracefs files

2021-10-08 18:08:43 -04:00

trace_stat.h

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trace_synth.h

tracing: synth events: increase max fields count

2021-09-08 15:29:16 -04:00

trace_syscalls.c

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trace_uprobe.c

tracing/uprobe: Fix uprobe_perf_open probes iteration

2021-11-23 20:52:01 -05:00

trace.c

tracing: Don't use out-of-sync va_list in event printing

2021-11-18 21:10:18 -05:00

trace.h

tracing: Fix pid filtering when triggers are attached

2021-11-26 17:37:06 -05:00

tracing_map.c

tracing/cfi: Fix cmp_entries_* functions signature mismatch

2021-10-19 20:33:20 -04:00

tracing_map.h

…