Daniel Bristot de Oliveira 4998e7fda1 tracing/osnoise: Switch from PF_NO_SETAFFINITY to migrate_disable ...

Currently, osnoise/timerlat threads run with PF_NO_SETAFFINITY set.
It works well, however, cgroups do not allow PF_NO_SETAFFINITY threads
to be accepted, and this creates a limitation to osnoise/timerlat.

To avoid this limitation, disable migration of the threads as soon
as they start to run, and then clean the PF_NO_SETAFFINITY flag (still)
used during thread creation.

If for some reason a thread migration is requested, e.g., via
sched_settafinity, the tracer thread will notice and exit.

Link: https://lkml.kernel.org/r/8ba8bc9c15b3ea40cf73cf67a9bc061a264609f0.1686063934.git.bristot@kernel.org

Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: William White <chwhite@redhat.com>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

2023-06-22 10:39:56 -04:00

..

rv

Merge tag 'trace-tools-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2023-04-28 16:11:26 -07:00

blktrace.c

block: remove more NULL checks after bdev_get_queue()

2023-02-21 09:23:22 -07:00

bpf_trace.c

Merge tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2023-04-28 15:57:53 -07:00

bpf_trace.h

…

error_report-traces.c

tracing: add error_report_end trace point

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

fgraph.c

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

fprobe.c

fprobe: add recursion detection in fprobe_exit_handler

2023-05-18 07:08:01 +09:00

ftrace_internal.h

…

ftrace.c

ftrace: Show all functions with addresses in available_filter_functions_addrs

2023-06-22 10:39:16 -04:00

Kconfig

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

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

kernel: trace: preemptirq_delay_test: add cpu affinity

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

rethook.c

rethook: use preempt_{disable, enable}_notrace in rethook_trampoline_handler

2023-05-18 07:08:01 +09:00

ring_buffer_benchmark.c

ring_buffer: Remove unused "event" parameter

2022-11-23 19:08:30 -05:00

ring_buffer.c

Merge tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2023-04-28 15:57:53 -07:00

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

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: 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

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

trace_eprobe.c

kernel/trace: extract common part in process_fetch_insn

2023-02-24 10:04:13 +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: Rename stacktrace field to common_stacktrace

2023-05-23 23:38:23 -04:00

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/synthetic: Make lastcmd_mutex static

2023-04-06 15:08:18 -04:00

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

tracing/user_events: Document user_event_mm one-shot list usage

2023-05-23 21:08:33 -04:00

trace_events.c

tracing: Rename stacktrace field to common_stacktrace

2023-05-23 23:38:23 -04:00

trace_export.c

tracing: Fix TASK_COMM_LEN in trace event format file

2023-02-12 10:23:39 -05:00

trace_functions_graph.c

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

trace_functions.c

ftrace: disable preemption when recursion locked

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

trace_hwlat.c

tracing/hwlat: Replace sched_setaffinity with set_cpus_allowed_ptr

2023-03-19 13:23:22 -04:00

trace_irqsoff.c

tracing: Merge irqflags + preempt counter.

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

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

kernel/trace: extract common part in process_fetch_insn

2023-02-24 10:04:13 +09:00

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

tracing/osnoise: Switch from PF_NO_SETAFFINITY to migrate_disable

2023-06-22 10:39:56 -04:00

trace_output.c

tracing: Add missing spaces in trace_print_hex_seq()

2023-04-26 09:10:02 -04:00

trace_output.h

tracing: Add "fields" option to show raw trace event fields

2023-03-29 06:52:08 -04:00

trace_preemptirq.c

cpuidle: tracing, preempt: Squash _rcuidle tracing

2023-01-31 15:01:46 +01:00

trace_printk.c

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

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

trace_probe_kernel.h

kernel/trace: Provide default impelentations defined in trace_probe_tmpl.h

2023-02-24 09:44:27 +09:00

trace_probe_tmpl.h

kernel/trace: extract common part in process_fetch_insn

2023-02-24 10:04:13 +09:00

trace_probe.c

tracing: Rename kvfree_rcu() to kvfree_rcu_mightsleep()

2023-04-05 13:48:03 +00:00

trace_probe.h

tracing/probe: trace_probe_primary_from_call(): checked list_first_entry

2023-05-31 18:47:10 +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

tracing: Have function_graph selftest call cond_resched()

2023-05-28 21:15:46 -04:00

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

kernel/trace: extract common part in process_fetch_insn

2023-02-24 10:04:13 +09:00

trace.c

tracing: Only make selftest conditionals affect the global_trace

2023-05-28 21:15:33 -04:00

trace.h

function_graph: Support recording and printing the return value of function

2023-06-20 18:38:37 -04:00

tracing_map.c

tracing: Remove unused variable 'dups'

2022-10-03 12:20:31 -04:00

tracing_map.h

tracing: Fix some typos in comments

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