Zheng Yejian 53e7c559b7 ring-buffer: Avoid softlockup in ring_buffer_resize() ... [ Upstream commit f6bd2c9248 ] When user resize all trace ring buffer through file 'buffer_size_kb', then in ring_buffer_resize(), kernel allocates buffer pages for each cpu in a loop. If the kernel preemption model is PREEMPT_NONE and there are many cpus and there are many buffer pages to be allocated, it may not give up cpu for a long time and finally cause a softlockup. To avoid it, call cond_resched() after each cpu buffer allocation. Link: https://lore.kernel.org/linux-trace-kernel/20230906081930.3939106-1-zhengyejian1@huawei.com Cc: <mhiramat@kernel.org> Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-10-06 13:18:16 +02:00
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blktrace.c	trace/blktrace: fix memory leak with using debugfs_lookup()	2023-03-10 09:39:47 +01:00
bpf_trace.c	bpf: Clear the probe_addr for uprobe	2023-09-19 12:22:32 +02:00
bpf_trace.h
error_report-traces.c
fgraph.c
ftrace_internal.h
ftrace.c	ftrace: Fix possible warning on checking all pages used in ftrace_process_locs()	2023-07-23 13:47:56 +02:00
Kconfig	tracing: Fix complicated dependency of CONFIG_TRACER_MAX_TRACE	2023-01-12 11:58:55 +01:00
kprobe_event_gen_test.c	tracing: Fix wrong return in kprobe_event_gen_test.c	2023-04-05 11:24:54 +02:00
Makefile	tracing: Place trace_pid_list logic into abstract functions	2022-07-29 17:25:29 +02:00
pid_list.c	tracing: Place trace_pid_list logic into abstract functions	2022-07-29 17:25:29 +02:00
pid_list.h	tracing: Place trace_pid_list logic into abstract functions	2022-07-29 17:25:29 +02:00
power-traces.c
preemptirq_delay_test.c
ring_buffer_benchmark.c
ring_buffer.c	ring-buffer: Avoid softlockup in ring_buffer_resize()	2023-10-06 13:18:16 +02:00
rpm-traces.c
synth_event_gen_test.c	tracing: Fix memory leak in test_gen_synth_cmd() and test_empty_synth_event()	2022-11-26 09:24:43 +01:00
trace_benchmark.c
trace_benchmark.h
trace_boot.c	tracing: Initialize integer variable to prevent garbage return value	2022-06-09 10:23:21 +02:00
trace_branch.c
trace_clock.c
trace_dynevent.c	tracing: Free buffers when a used dynamic event is removed	2022-12-08 11:28:43 +01:00
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	kernel/trace: Fix cleanup logic of enable_trace_eprobe	2023-07-23 13:47:43 +02:00
trace_event_perf.c	tracing/perf: Fix double put of trace event when init fails	2022-08-25 11:39:57 +02:00
trace_events_filter_test.h
trace_events_filter.c	tracing: Add ustring operation to filtering string pointers	2022-03-08 19:12:33 +01:00
trace_events_hist.c	tracing: Allow synthetic events to pass around stacktraces	2023-08-03 10:22:30 +02:00
trace_events_inject.c	tracing: Have event inject files inc the trace array ref count	2023-10-06 13:18:02 +02:00
trace_events_synth.c	tracing: Fix trace_event_raw_event_synth() if else statement	2023-08-03 10:22:46 +02:00
trace_events_trigger.c	tracing: Fix to check event_mutex is held while accessing trigger list	2022-09-15 11:30:02 +02:00
trace_events.c	tracing: Increase trace array ref count on enable and filter files	2023-10-06 13:18:00 +02:00
trace_export.c
trace_functions_graph.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_functions.c
trace_hwlat.c	tracing: Remove extra space at the end of hwlat_detector/mode	2023-09-19 12:22:48 +02:00
trace_irqsoff.c	tracing: Fix memleak due to race between current_tracer and trace	2023-08-30 16:18:13 +02:00
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	tracing: Move duplicate code of trace_kprobe/eprobe.c into header	2022-10-26 12:34:31 +02:00
trace_mmiotrace.c
trace_nop.c
trace_osnoise.c	tracing/osnoise: Fix duration type	2022-12-08 11:28:43 +01:00
trace_output.c	tracing: Make sure trace_printk() can output as soon as it can be used	2023-02-01 08:27:23 +01:00
trace_output.h
trace_preemptirq.c	tracing: hold caller_addr to hardirq_{enable,disable}_ip	2022-09-20 12:39:43 +02:00
trace_printk.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_probe_kernel.h	tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails	2023-08-03 10:22:31 +02:00
trace_probe_tmpl.h	tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails	2023-08-03 10:22:31 +02:00
trace_probe.c	Revert "tracing: Add "(fault)" name injection to kernel probes"	2023-08-03 10:22:31 +02:00
trace_probe.h	tracing/probes: Add symstr type for dynamic events	2023-08-03 10:22:30 +02:00
trace_recursion_record.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_sched_switch.c
trace_sched_wakeup.c	tracing: Fix memleak due to race between current_tracer and trace	2023-08-30 16:18:13 +02:00
trace_selftest_dynamic.c
trace_selftest.c
trace_seq.c
trace_stack.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_stat.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_stat.h
trace_synth.h	tracing: Allow synthetic events to pass around stacktraces	2023-08-03 10:22:30 +02:00
trace_syscalls.c	tracing: Make tp_printk work on syscall tracepoints	2022-06-14 18:36:14 +02:00
trace_uprobe.c	bpf: Clear the probe_addr for uprobe	2023-09-19 12:22:32 +02:00
trace.c	tracing: Increase trace array ref count on enable and filter files	2023-10-06 13:18:00 +02:00
trace.h	tracing: Increase trace array ref count on enable and filter files	2023-10-06 13:18:00 +02:00
tracing_map.c	tracing: Fix a kmemleak false positive in tracing_map	2021-12-17 10:30:16 +01:00
tracing_map.h