| /linux/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/ |
| H A D | tracepoints.rst | 13 For the list of support mlx5 events, check /sys/kernel/tracing/events/mlx5/.
19 $ echo mlx5:mlx5e_configure_flower >> /sys/kernel/tracing/set_event
20 $ cat /sys/kernel/tracing/trace
26 $ echo mlx5:mlx5e_delete_flower >> /sys/kernel/tracing/set_event
27 $ cat /sys/kernel/tracing/trace
33 $ echo mlx5:mlx5e_stats_flower >> /sys/kernel/tracing/set_event
34 $ cat /sys/kernel/tracing/trace
40 $ echo mlx5:mlx5e_tc_update_neigh_used_value >> /sys/kernel/tracing/set_event
41 $ cat /sys/kernel/tracing/trace
47 $ echo mlx5:mlx5e_rep_neigh_update >> /sys/kernel/tracing/set_event
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| /linux/Documentation/trace/ |
| H A D | index.rst | 2 Linux Tracing Technologies Guide
5 Tracing in the Linux kernel is a powerful mechanism that allows
7 behavior. This guide provides documentation on various tracing
10 Introduction to Tracing
13 This section provides an overview of Linux tracing mechanisms
24 Core Tracing Frameworks
27 The following are the primary tracing frameworks integrated into
43 Event Tracing and Analysis
46 A detailed explanation of event tracing mechanisms and their
61 Hardware and Performance Tracing
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| H A D | mmiotrace.rst | 2 In-kernel memory-mapped I/O tracing
10 MMIO tracing was originally developed by Intel around 2003 for their Fault
12 Jeff Muizelaar created a tool for tracing MMIO accesses with the Nouveau
26 Mmiotrace feature is compiled in by the CONFIG_MMIOTRACE option. Tracing is
28 supported, but tracing is unreliable and may miss events if more than one CPU
39 $ echo mmiotrace > /sys/kernel/tracing/current_tracer
40 $ cat /sys/kernel/tracing/trace_pipe > mydump.txt &
42 $ echo "X is up" > /sys/kernel/tracing/trace_marker
43 $ echo nop > /sys/kernel/tracing/current_tracer
59 $ echo mmiotrace > /sys/kernel/tracing/current_tracer
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| H A D | timerlat-tracer.rst | 10 goal of timerlat is tracing in such a way to help kernel developers.
16 tracing system (generally mounted at /sys/kernel/tracing).
20 [root@f32 ~]# cd /sys/kernel/tracing/
21 [root@f32 tracing]# echo timerlat > current_tracer
25 [root@f32 tracing]# cat trace
71 - stop_tracing_us: stop the system tracing if a
74 - stop_tracing_total_us: stop the system tracing if a
87 [root@f32 ~]# cd /sys/kernel/tracing/
88 [root@f32 tracing]# echo timerlat > current_tracer
89 [root@f32 tracing]# echo 1 > events/osnoise/enable
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| H A D | uprobetracer.rst | 2 Uprobe-tracer: Uprobe-based Event Tracing
15 /sys/kernel/tracing/uprobe_events, and enable it via
16 /sys/kernel/tracing/events/uprobes/<EVENT>/enable.
21 You can also use /sys/kernel/tracing/dynamic_events instead of
82 /sys/kernel/tracing/uprobe_profile. The first column is the filename,
90 echo 'p /bin/bash:0x4245c0' > /sys/kernel/tracing/uprobe_events
94 echo 'r /bin/bash:0x4245c0' > /sys/kernel/tracing/uprobe_events
98 echo '-:p_bash_0x4245c0' >> /sys/kernel/tracing/uprobe_events
102 cat /sys/kernel/tracing/uprobe_events
106 echo > /sys/kernel/tracing/uprobe_events
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| H A D | hwlat_detector.rst | 38 Write the ASCII text "hwlat" into the current_tracer file of the tracing system
39 (mounted at /sys/kernel/tracing or /sys/kernel/tracing). It is possible to
45 # echo hwlat > /sys/kernel/tracing/current_tracer
46 # echo 100 > /sys/kernel/tracing/tracing_thresh
48 The /sys/kernel/tracing/hwlat_detector interface contains the following files:
58 observed then the data will be written to the tracing ring buffer.
70 The following tracing directory files are used by the hwlat_detector:
72 in /sys/kernel/tracing:
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| H A D | kprobetrace.rst | 2 Kprobe-based Event Tracing
20 /sys/kernel/tracing/kprobe_events, and enable it via
21 /sys/kernel/tracing/events/kprobes/<EVENT>/enable.
23 You can also use /sys/kernel/tracing/dynamic_events instead of
155 under tracing/events/kprobes/<EVENT>, at the directory you can see 'id',
177 /sys/kernel/tracing/kprobe_profile.
201 …echo 'p:myprobe do_sys_open dfd=%ax filename=%dx flags=%cx mode=+4($stack)' > /sys/kernel/tracing/…
211 echo 'r:myretprobe do_sys_open $retval' >> /sys/kernel/tracing/kprobe_events
216 /sys/kernel/tracing/events/kprobes/<EVENT>/format.
219 cat /sys/kernel/tracing/events/kprobes/myprobe/format
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| H A D | osnoise-tracer.rst | 47 tracing system (generally mounted at /sys/kernel/tracing).
51 [root@f32 ~]# cd /sys/kernel/tracing/
52 [root@f32 tracing]# echo osnoise > current_tracer
56 [root@f32 tracing]# cat trace
103 - osnoise/stop_tracing_us: stop the system tracing if a single noise
106 - osnoise/stop_tracing_total_us: stop the system tracing if total noise
134 Additional Tracing
173 approach: measuring thread and tracing.
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| /linux/kernel/trace/ |
| H A D | Kconfig | 151 Adds a very slight overhead to tracing when enabled.
156 select TRACING
163 # enabled by all tracers (context switch and event tracer) they select TRACING.
166 # GENERIC_TRACER and TRACING to avoid circular dependencies to accomplish the
169 config TRACING config
182 select TRACING
186 # be able to offer generic tracing facilities:
199 Enable the kernel tracing infrastructure.
205 depends on TRACING
208 The tracing interface was moved from /sys/kernel/debug/tracing
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| H A D | trace_selftest.c | 54 /* disable tracing */ in trace_test_buffer_cpu()
370 /* enable tracing, and record the filter function */ in trace_selftest_startup_dynamic_tracing()
386 /* enable tracing */ in trace_selftest_startup_dynamic_tracing()
413 /* stop the tracing. */ in trace_selftest_startup_dynamic_tracing()
431 /* Test the ops with global tracing running */ in trace_selftest_startup_dynamic_tracing()
438 /* Enable tracing on all functions again */ in trace_selftest_startup_dynamic_tracing()
441 /* Test the ops with global tracing off */ in trace_selftest_startup_dynamic_tracing()
474 * tracing utility. in trace_selftest_test_recursion_safe_func()
503 /* enable tracing, and record the filter function */ in trace_selftest_function_recursion()
619 /* enable tracing, and record the filter function */ in trace_selftest_function_regs()
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| /linux/tools/testing/selftests/ftrace/test.d/ftrace/ |
| H A D | func_traceonoff_triggers.tc | 10 # tracing, enabling or disabling trace events, or recording a stack trace
13 # This test is designed to test enabling and disabling tracing triggers
23 echo "Testing function probes with enabling disabling tracing:"
29 echo '** DISABLE TRACING'
43 echo '** ENABLE TRACING'
85 fail "Tracing is not stopped"
90 fail "Tracing is not off"
98 fail "Tracing file is still changing"
105 fail "Tracing is still happeing"
117 fail "Tracing is started again"
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| /linux/Documentation/core-api/irq/ |
| H A D | irqflags-tracing.rst | 2 IRQ-flags state tracing
7 The "irq-flags tracing" feature "traces" hardirq and softirq state, in
21 state changes. But an architecture can be irq-flags-tracing enabled in a
30 irq-flags-tracing support:
37 irq-flags-tracing is spent in this state: look at the lockdep
40 lockdep complaint in the irq-flags-tracing functions arch support is
43 excluded from the irq-tracing [and lock validation] mechanism via
46 In general there is no risk from having an incomplete irq-flags-tracing
49 should be no crashes due to irq-tracing bugs. (except if the assembly
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| /linux/Documentation/ABI/obsolete/ |
| H A D | automount-tracefs-debugfs | 1 What: /sys/kernel/debug/tracing
8 into the debugfs file system under the "tracing" directory. Access
9 to the files were in /sys/kernel/debug/tracing. As systems wanted
10 access to the tracing interface without having to enable debugfs, a
12 file system and was usually mounted in /sys/kernel/tracing.
16 the "tracing" directory of debugfs. The tracefs interface was added
19 All tooling should now be using tracefs directly and the "tracing"
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| /linux/tools/testing/selftests/powerpc/mm/ |
| H A D | stress_code_patching.sh | 13 if [ ! -e "$DEBUFS_DIR/tracing/current_tracer" ]
15 echo "Tracing files not found, skipping" 1>&2
22 if grep -q "FUNCTION TRACING IS CORRUPTED" "$DEBUFS_DIR/tracing/trace"
33 echo function > $DEBUFS_DIR/tracing/current_tracer
34 echo nop > $DEBUFS_DIR/tracing/current_tracer
41 echo nop > $DEBUFS_DIR/tracing/current_tracer
|
| /linux/Documentation/firmware-guide/acpi/ |
| H A D | method-tracing.rst | 15 method tracing facility.
20 ACPICA provides method tracing capability. And two functions are
80 There are special log entries added by the method tracing facility at
153 Note that all above method tracing facility related module parameters can
163 All method tracing functions can be configured via ACPI module
173 The temporary debug_layer used when the tracing feature is enabled.
179 The temporary debug_level used when the tracing feature is enabled.
185 The status of the tracing feature.
187 Users can enable/disable this debug tracing feature by executing
195 Disable the method tracing feature.
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| /linux/include/asm-generic/ |
| H A D | syscall.h | 28 * tracing about to attempt one, returns the system call number.
48 * It's only valid to call this when @task is stopped for tracing on
56 * @task: task of interest, must be in system call exit tracing
60 * call exit tracing (due to %SYSCALL_WORK_SYSCALL_TRACE or
68 * register state looked like at system call entry tracing.
79 * It's only valid to call this when @task is stopped for tracing on exit
93 * It's only valid to call this when @task is stopped for tracing on exit
111 * It's only valid to call this when @task is stopped for tracing on exit
127 * It's only valid to call this when @task is stopped for tracing on
136 * @task: task of interest, must be in system call entry tracing
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| /linux/tools/testing/selftests/ftrace/test.d/00basic/ |
| H A D | snapshot.tc | 2 # description: Snapshot and tracing setting
6 echo "Set tracing off"
15 echo "Ensure keep tracing off"
18 echo "Set tracing on"
24 echo "Ensure keep tracing on"
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| /linux/tools/testing/selftests/bpf/prog_tests/ |
| H A D | trace_ext.c | 69 /* open tracing */ in test_trace_ext()
71 if (CHECK(!skel_trace, "setup", "tracing/test_pkt_md_access_new open failed\n")) in test_trace_ext()
74 /* set tracing's attach target - fentry */ in test_trace_ext()
78 /* set tracing's attach target - fexit */ in test_trace_ext()
82 /* load/attach tracing */ in test_trace_ext()
84 if (!ASSERT_OK(err, "tracing/test_pkt_md_access_new load")) { in test_trace_ext()
91 if (!ASSERT_OK(err, "tracing/test_pkt_md_access_new attach")) in test_trace_ext()
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| /linux/tools/testing/selftests/user_events/ |
| H A D | user_events_selftests.h | 16 umount("/sys/kernel/tracing"); in tracefs_unmount()
29 ret = stat("/sys/kernel/tracing", &buf); in tracefs_enabled()
37 ret = stat("/sys/kernel/tracing/README", &buf); in tracefs_enabled()
40 if (mount(NULL, "/sys/kernel/tracing", "tracefs", 0, NULL) != 0) { in tracefs_enabled()
48 ret = stat("/sys/kernel/tracing/README", &buf); in tracefs_enabled()
79 ret = stat("/sys/kernel/tracing/user_events_data", &buf); in user_events_enabled()
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-class-intel_pmt-features | 24 ├── tracing/ # PMT tracing features
96 ├── tracing/
114 Example 'caps' content for the 'tracing' feature:
117 ├── tracing/
127 tracing Available: No
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| /linux/drivers/char/mwave/ |
| H A D | README | 8 0x0001 mwavedd api tracing
9 0x0002 smapi api tracing
10 0x0004 3780i tracing
11 0x0008 tp3780i tracing
13 Tracing only occurs if the driver has been compiled with the
|
| /linux/tools/testing/selftests/bpf/progs/ |
| H A D | verifier_helper_restricted.c | 89 __failure __msg("tracing progs cannot use bpf_timer yet")
114 __failure __msg("tracing progs cannot use bpf_timer yet")
139 __failure __msg("tracing progs cannot use bpf_timer yet")
164 __failure __msg("tracing progs cannot use bpf_timer yet")
189 __failure __msg("tracing progs cannot use bpf_spin_lock yet")
212 __failure __msg("tracing progs cannot use bpf_spin_lock yet")
235 __failure __msg("tracing progs cannot use bpf_spin_lock yet")
258 __failure __msg("tracing progs cannot use bpf_spin_lock yet")
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| /linux/Documentation/translations/zh_CN/core-api/irq/ |
| H A D | irqflags-tracing.rst | 3 :Original: Documentation/core-api/irq/irqflags-tracing.rst
9 .. _cn_irqflags-tracing.rst:
17 “irq-flags tracing”（中断标志追踪）功能可以 “追踪” hardirq和softirq的状态，它让
27 的状态变化。但是一个架构可以以一种相当直接且无风险的方式启用irq-flags-tracing。
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| /linux/drivers/net/wireless/broadcom/brcm80211/ |
| H A D | Kconfig | 28 bool "Broadcom device tracing"
30 depends on TRACING
34 Tracing can be enabled at runtime to aid in debugging wireless
35 issues. This option adds a small amount of overhead when tracing
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| /linux/scripts/tracing/ |
| H A D | ftrace-bisect.sh | 7 # tracer or function graph tracing that causes the machine to reboot, hang, or
10 # First, determine if function tracing is working with a single function:
12 # (note, if this is a problem with function_graph tracing, then simply
15 # # cd /sys/kernel/tracing
56 # # cd /sys/kernel/tracing
88 # enabling function tracing in the above steps. Or if you can compile the
|