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linux-stable-mirror/kernel/trace
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Tao Chen f059795ec6 bpf: Remove migrate_disable in kprobe_multi_link_prog_run 
[ Upstream commit abdaf49be5 ]

Graph tracer framework ensures we won't migrate, kprobe_multi_link_prog_run
called all the way from graph tracer, which disables preemption in
function_graph_enter_regs, as Jiri and Yonghong suggested, there is no
need to use migrate_disable. As a result, some overhead may will be reduced.
And add cant_sleep check for __this_cpu_inc_return.

Fixes: 0dcac27254 ("bpf: Add multi kprobe link")
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250814121430.2347454-1-chen.dylane@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-15 11:59:56 +02:00
..
rv
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
blktrace.c
…
bpf_trace.c
bpf: Remove migrate_disable in kprobe_multi_link_prog_run
2025-10-15 11:59:56 +02:00
bpf_trace.h
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error_report-traces.c
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fgraph.c
trace/fgraph: Fix error handling
2025-09-19 16:35:43 +02:00
fprobe.c
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ftrace_internal.h
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ftrace.c
ftrace: Also allocate and copy hash for reading of filter files
2025-08-28 16:31:08 +02:00
Kconfig
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kprobe_event_gen_test.c
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Makefile
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pid_list.c
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pid_list.h
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power-traces.c
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preemptirq_delay_test.c
kernel: trace: preemptirq_delay_test: use offstack cpu mask
2025-08-15 12:13:53 +02:00
rethook.c
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ring_buffer_benchmark.c
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ring_buffer.c
ring-buffer: Remove ring_buffer_read_prepare_sync()
2025-08-15 12:13:46 +02:00
rpm-traces.c
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synth_event_gen_test.c
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trace_benchmark.c
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trace_benchmark.h
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trace_boot.c
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trace_branch.c
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trace_btf.c
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trace_btf.h
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trace_clock.c
tracing: Use atomic64_inc_return() in trace_clock_counter()
2024-12-14 20:03:58 +01:00
trace_dynevent.c
tracing: dynevent: Add a missing lockdown check on dynevent
2025-10-02 13:44:13 +02:00
trace_dynevent.h
tracing: probes: Fix a possible race in trace_probe_log APIs
2025-05-22 14:29:36 +02:00
trace_entries.h
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trace_eprobe.c
tracing/eprobe: Fix to release eprobe when failed to add dyn_event
2024-12-14 20:04:13 +01:00
trace_event_perf.c
trace/trace_event_perf: remove duplicate samples on the first tracepoint event
2024-12-05 14:02:02 +01:00
trace_events_filter_test.h
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trace_events_filter.c
tracing: Fix filter string testing
2025-04-25 10:47:55 +02:00
trace_events_hist.c
tracing: Rename event_trigger_alloc() to trigger_data_alloc()
2025-06-19 15:31:48 +02:00
trace_events_inject.c
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trace_events_synth.c
tracing: Do not add length to print format in synthetic events
2025-04-20 10:15:50 +02:00
trace_events_trigger.c
tracing: Fix error handling in event_trigger_parse()
2025-06-19 15:31:48 +02:00
trace_events_user.c
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trace_events.c
tracing: Add down_write(trace_event_sem) when adding trace event
2025-07-24 08:56:22 +02:00
trace_export.c
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trace_fprobe.c
tracing: fprobe events: Fix possible UAF on modules
2025-04-20 10:15:50 +02:00
trace_functions_graph.c
tracing: Fix use-after-free in print_graph_function_flags during tracer switching
2025-04-10 14:39:39 +02:00
trace_functions.c
ftrace: Fix preemption accounting for stacktrace filter command
2025-05-22 14:29:48 +02:00
trace_hwlat.c
tracing/hwlat: Fix a race during cpuhp processing
2024-10-03 16:43:23 -04:00
trace_irqsoff.c
tracing: Fix use-after-free in print_graph_function_flags during tracer switching
2025-04-10 14:39:39 +02:00
trace_kdb.c
ring-buffer: Remove ring_buffer_read_prepare_sync()
2025-08-15 12:13:46 +02:00
trace_kprobe_selftest.c
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trace_kprobe_selftest.h
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trace_kprobe.c
tracing: probes: Fix a possible race in trace_probe_log APIs
2025-05-22 14:29:36 +02:00
trace_mmiotrace.c
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trace_nop.c
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trace_osnoise.c
tracing/osnoise: Fix crash in timerlat_dump_stack()
2025-07-24 08:56:22 +02:00
trace_output.c
tracing: Do not take trace_event_sem in print_event_fields()
2025-05-09 09:50:32 +02:00
trace_output.h
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trace_preemptirq.c
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trace_printk.c
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trace_probe_kernel.h
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trace_probe_tmpl.h
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trace_probe.c
tracing/probes: Avoid using params uninitialized in parse_btf_arg()
2025-07-24 08:56:22 +02:00
trace_probe.h
tracing: probe-events: Remove unused MAX_ARG_BUF_LEN macro
2025-03-13 13:02:05 +01:00
trace_recursion_record.c
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trace_sched_switch.c
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trace_sched_wakeup.c
tracing: Fix use-after-free in print_graph_function_flags during tracer switching
2025-04-10 14:39:39 +02:00
trace_selftest_dynamic.c
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trace_selftest.c
sched/fair: Fix external p->on_rq users
2024-10-14 09:14:35 +02:00
trace_seq.c
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trace_stack.c
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trace_stat.c
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trace_stat.h
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trace_synth.h
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trace_syscalls.c
tracing/ftrace: disable preemption in syscall probe
2024-12-14 20:03:58 +01:00
trace_uprobe.c
tracing: probes: Fix a possible race in trace_probe_log APIs
2025-05-22 14:29:36 +02:00
trace.c
tracing: Silence warning when chunk allocation fails in trace_pid_write
2025-09-19 16:35:44 +02:00
trace.h
tracing: Limit access to parser->buffer when trace_get_user failed
2025-08-28 16:31:10 +02:00
tracing_map.c
tracing: Fix cmp_entries_dup() to respect sort() comparison rules
2024-12-14 20:03:21 +01:00
tracing_map.h
…