Nicolas Saenz Julienne 68e83498cb ftrace: Avoid synchronize_rcu_tasks_rude() call when not necessary ...

synchronize_rcu_tasks_rude() triggers IPIs and forces rescheduling on
all CPUs. It is a costly operation and, when targeting nohz_full CPUs,
very disrupting (hence the name). So avoid calling it when 'old_hash'
doesn't need to be freed.

Link: https://lkml.kernel.org/r/20210721114726.1545103-1-nsaenzju@redhat.com

Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

2021-07-23 08:45:53 -04:00

..

blktrace.c

Merge tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block

2021-02-28 11:23:38 -08:00

bpf_trace.c

Merge tag 'trace-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2021-07-03 11:13:22 -07:00

bpf_trace.h

bpf: Use dedicated bpf_trace_printk event instead of trace_printk()

2020-07-13 16:55:49 -07:00

error_report-traces.c

tracing: add error_report_end trace point

2021-02-26 09:41:02 -08:00

fgraph.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

ftrace_internal.h

x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up

2020-05-12 18:24:34 -04:00

ftrace.c

ftrace: Avoid synchronize_rcu_tasks_rude() call when not necessary

2021-07-23 08:45:53 -04:00

Kconfig

trace: Add timerlat tracer

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

kprobe_event_gen_test.c

tracing: Add kprobe event command generation test module

2020-01-30 09:46:28 -05:00

Makefile

trace: Add osnoise tracer

2021-06-25 19:57:01 -04:00

power-traces.c

…

preemptirq_delay_test.c

kernel: trace: preemptirq_delay_test: add cpu affinity

2021-02-02 17:02:07 -05:00

ring_buffer_benchmark.c

sched,tracing: Convert to sched_set_fifo()

2020-07-29 11:43:53 +02:00

ring_buffer.c

tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop.

2021-07-22 11:52:33 -04:00

rpm-traces.c

…

synth_event_gen_test.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_benchmark.c

tracing: Fix some typos in comments

2020-11-10 20:39:40 -05:00

trace_benchmark.h

…

trace_boot.c

tracing/boot: Add per-group/all events enablement

2021-06-10 11:16:20 -04:00

trace_branch.c

tracing: Merge irqflags + preempt counter.

2021-02-02 17:02:06 -05:00

trace_clock.c

tracing: Do no increment trace_clock_global() by one

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

trace_dynevent.c

tracing/dynevent: Fix a memory leak in an error handling path

2021-04-13 12:29:48 -04:00

trace_dynevent.h

tracing/dynevent: Delegate parsing to create function

2021-02-09 12:52:15 -05:00

trace_entries.h

trace: Add timerlat tracer

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

trace_event_perf.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_events_filter_test.h

…

trace_events_filter.c

tracing: Update create_system_filter() kernel-doc comment

2021-03-25 16:04:35 -04:00

trace_events_hist.c

tracing/histogram: Rename "cpu" to "common_cpu"

2021-07-23 08:44:47 -04:00

trace_events_inject.c

tracing: Merge irqflags + preempt counter.

2021-02-02 17:02:06 -05:00

trace_events_synth.c

tracing: Clean up alloc_synth_event()

2021-07-23 08:45:30 -04:00

trace_events_trigger.c

tracing: Fix set_named_trigger_data() kernel-doc comment

2021-06-10 11:16:20 -04:00

trace_events.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_export.c

tracing: Fix some typos in comments

2020-11-10 20:39:40 -05:00

trace_functions_graph.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_functions.c

tracing: Add "func_no_repeats" option for function tracing

2021-04-15 14:50:02 -04:00

trace_hwlat.c

trace/hwlat: Support hotplug operations

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

trace_irqsoff.c

tracing: Merge irqflags + preempt counter.

2021-02-02 17:02:06 -05:00

trace_kdb.c

tracing: Rename trace_buffer to array_buffer

2020-01-13 13:19:38 -05:00

trace_kprobe_selftest.c

…

trace_kprobe_selftest.h

…

trace_kprobe.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_mmiotrace.c

tracing: Remove definition of DEBUG in trace_mmiotrace.c

2021-02-02 17:02:07 -05:00

trace_nop.c

…

trace_osnoise.c

trace/timerlat: Fix indentation on timerlat_main()

2021-06-29 16:37:50 -04:00

trace_output.c

trace: Add timerlat tracer

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

trace_output.h

ftrace: Add recording of functions that caused recursion

2020-11-06 08:42:26 -05:00

trace_preemptirq.c

lockdep: fix order in trace_hardirqs_off_caller()

2020-09-14 10:08:07 +02:00

trace_printk.c

tracing: Add a verifier to check string pointers for trace events

2021-03-18 12:58:27 -04:00

trace_probe_tmpl.h

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_probe.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_probe.h

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_recursion_record.c

ftrace: Add recording of functions that caused recursion

2020-11-06 08:42:26 -05:00

trace_sched_switch.c

tracing: Fix sched switch start/stop refcount racy updates

2020-01-30 09:46:10 -05:00

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

…

trace_selftest.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_seq.c

tracing: Fix various typos in comments

2021-03-23 14:08:18 -04:00

trace_stack.c

ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs

2020-11-13 12:14:55 -05:00

trace_stat.c

tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer

2020-09-18 22:17:14 -04:00

trace_stat.h

tracing: Use generic type for comparator function

2019-11-14 13:15:11 -05:00

trace_synth.h

tracing: Synthetic event field_pos is an index not a boolean

2021-07-23 08:43:04 -04:00

trace_syscalls.c

tracing: Merge irqflags + preempt counter.

2021-02-02 17:02:06 -05:00

trace_uprobe.c

tracing/dynevent: Delegate parsing to create function

2021-02-09 12:52:15 -05:00

trace.c

tracing/histogram: Rename "cpu" to "common_cpu"

2021-07-23 08:44:47 -04:00

trace.h

Merge tag 'trace-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2021-07-03 11:13:22 -07:00

tracing_map.c

tracing: Fix some typos in comments

2020-11-10 20:39:40 -05:00

tracing_map.h

tracing: Fix some typos in comments

2020-11-10 20:39:40 -05:00