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4c42f5f0d1dd20bddd9f940beb1e6ccad60c4498
linux/kernel/trace
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Tero Kristo 4c42f5f0d1 trace/hwlat: Do not wipe the contents of per-cpu thread data 
Do not wipe the contents of the per-cpu kthread data when starting the
tracer, as this will completely forget about already running instances
and can later start new additional per-cpu threads.

Link: https://lore.kernel.org/all/20230302113654.2984709-1-tero.kristo@linux.intel.com/
Link: https://lkml.kernel.org/r/20230310100451.3948583-2-tero.kristo@linux.intel.com

Cc: stable@vger.kernel.org
Fixes: f46b16520a ("trace/hwlat: Implement the per-cpu mode")
Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-03-19 12:20:48 -04:00
..
rv
rv: remove redundant initialization of pointer ptr
2023-01-25 10:31:02 -05:00
blktrace.c
blktrace: Fix output non-blktrace event when blk_classic option enabled
2022-12-08 09:26:11 -07:00
bpf_trace.c
bpf: Skip task with pid=1 in send_signal_common()
2023-01-06 22:48:58 +01:00
bpf_trace.h
…
error_report-traces.c
…
fgraph.c
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2022-06-03 14:05:34 -07:00
fprobe.c
tracing/fprobe: Fix to check whether fprobe is registered correctly
2022-11-04 08:50:07 +09:00
ftrace_internal.h
…
ftrace.c
ftrace: Fix invalid address access in lookup_rec() when index is 0
2023-03-09 22:17:06 -05:00
Kconfig
tracing: Always use canonical ftrace path
2023-02-18 14:34:09 -05:00
kprobe_event_gen_test.c
tracing: Fix wrong return in kprobe_event_gen_test.c
2023-03-19 12:20:48 -04:00
Makefile
rv: Add Runtime Verification (RV) interface
2022-07-30 14:01:28 -04:00
pid_list.c
tracing: Cleanup double word in comment
2022-04-26 17:58:50 -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
…
rethook.c
rethook: fix a potential memleak in rethook_alloc()
2022-11-18 10:15:34 +09:00
ring_buffer_benchmark.c
ring_buffer: Remove unused "event" parameter
2022-11-23 19:08:30 -05:00
ring_buffer.c
tracing: Always use canonical ftrace path
2023-02-18 14:34:09 -05:00
rpm-traces.c
…
synth_event_gen_test.c
tracing: Always use canonical ftrace path
2023-02-18 14:34:09 -05:00
trace_benchmark.c
tracing: Add numeric delta time to the trace event benchmark
2022-09-26 13:01:09 -04:00
trace_benchmark.h
tracing: Add numeric delta time to the trace event benchmark
2022-09-26 13:01:09 -04:00
trace_boot.c
tracing: Initialize integer variable to prevent garbage return value
2022-05-26 21:13:00 -04:00
trace_branch.c
…
trace_clock.c
tracing: Do no increment trace_clock_global() by one
2021-06-18 09:10:00 -04:00
trace_dynevent.c
tracing: Free buffers when a used dynamic event is removed
2022-11-23 19:07:12 -05:00
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 race where eprobes can be called before the event
2022-11-24 00:42:18 +09:00
trace_event_perf.c
tracing/perf: Use strndup_user instead of kzalloc/strncpy_from_user
2022-11-23 19:08:31 -05:00
trace_events_filter_test.h
…
trace_events_filter.c
tracing: Add a way to filter function addresses to function names
2023-01-25 10:31:11 -05:00
trace_events_hist.c
tracing: Check field value in hist_field_name()
2023-03-09 22:17:06 -05:00
trace_events_inject.c
tracing: Support __rel_loc relative dynamic data location attribute
2021-12-06 15:37:21 -05:00
trace_events_synth.c
tracing/histogram: Don't use strlen to find length of stacktrace variables
2023-02-15 19:59:09 -05:00
trace_events_trigger.c
tracing: Do not synchronize freeing of trigger filter on boot up
2022-12-14 08:50:56 -05:00
trace_events_user.c
Merge tag 'trace-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2022-12-15 18:01:16 -08:00
trace_events.c
tracing: Remove unnecessary NULL assignment
2023-02-18 14:34:36 -05:00
trace_export.c
…
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
trace/hwlat: Do not wipe the contents of per-cpu thread data
2023-03-19 12:20:48 -04:00
trace_irqsoff.c
…
trace_kdb.c
kdb: Rename members of struct kdbtab_t
2021-07-27 17:05:06 +01:00
trace_kprobe_selftest.c
…
trace_kprobe_selftest.h
…
trace_kprobe.c
trace/kprobe: remove duplicated calls of ring_buffer_event_data
2022-12-09 23:48:05 -05:00
trace_mmiotrace.c
…
trace_nop.c
…
trace_osnoise.c
tracing/osnoise: set several trace_osnoise.c variables storage-class-specifier to static
2023-03-19 12:20:48 -04:00
trace_output.c
tracing: Make sure trace_printk() can output as soon as it can be used
2023-01-24 11:27:29 -05:00
trace_output.h
…
trace_preemptirq.c
tracing: hold caller_addr to hardirq_{enable,disable}_ip
2022-09-06 22:26:00 -04:00
trace_printk.c
tracing: Disable "other" permission bits in the tracefs files
2021-10-08 18:08:43 -04:00
trace_probe_kernel.h
tracing: Add "(fault)" name injection to kernel probes
2022-10-12 13:50:20 -04:00
trace_probe_tmpl.h
tracing/probes: Add symstr type for dynamic events
2022-12-15 08:48:57 +09:00
trace_probe.c
Merge tag 'trace-probes-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2022-12-21 18:57:24 -08:00
trace_probe.h
tracing/probes: Reject symbol/symstr type for uprobe
2022-12-15 09:00:20 +09:00
trace_recursion_record.c
tracing: Use trace_create_file() to simplify creation of tracefs entries
2022-05-26 21:12:52 -04:00
trace_sched_switch.c
sched/tracing: Append prev_state to tp args instead
2022-05-12 00:37:11 +02:00
trace_sched_wakeup.c
sched/tracing: Append prev_state to tp args instead
2022-05-12 00:37:11 +02:00
trace_selftest_dynamic.c
…
trace_selftest.c
x86/ftrace: Make it call depth tracking aware
2022-10-17 16:41:19 +02:00
trace_seq.c
tracing: Acquire buffer from temparary trace sequence
2023-02-07 12:42:54 -05:00
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
…
trace_synth.h
tracing: Allow synthetic events to pass around stacktraces
2023-01-25 10:31:24 -05:00
trace_syscalls.c
tracing: Remove unused __bad_type_size() method
2022-11-17 20:21:06 -05:00
trace_uprobe.c
tracing/probes: Reject symbol/symstr type for uprobe
2022-12-15 09:00:20 +09:00
trace.c
tracing: Always use canonical ftrace path
2023-02-18 14:34:09 -05:00
trace.h
tracing: Add enabling of events to boot instances
2023-02-07 12:49:56 -05:00
tracing_map.c
tracing: Remove unused variable 'dups'
2022-10-03 12:20:31 -04:00
tracing_map.h
…