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/linux/tools/perf/
H A Dbuiltin-ftrace.c3 * builtin-ftrace.c
39 #include "util/ftrace.h"
79 pr_err("ftrace only works for users with the CAP_PERFMON or CAP_SYS_ADMIN capability!\n"); in check_ftrace_capable()
290 static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) in write_tracing_option_file()
307 static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) in reset_tracing_options()
328 reset_tracing_options(ftrace); in reset_tracing_files()
347 char dirname[] = "instances/perf-ftrace-XXXXXX";
365 static int set_tracing_pid(struct perf_ftrace *ftrace) in init_tracing_instance()
370 if (target__has_cpu(&ftrace->target)) in init_tracing_instance()
373 for (i = 0; i < perf_thread_map__nr(evlist__core(ftrace in set_tracing_pid()
372 set_tracing_pid(struct perf_ftrace * ftrace) set_tracing_pid() argument
414 set_tracing_cpu(struct perf_ftrace * ftrace) set_tracing_cpu() argument
424 set_tracing_func_stack_trace(struct perf_ftrace * ftrace) set_tracing_func_stack_trace() argument
435 set_tracing_func_irqinfo(struct perf_ftrace * ftrace) set_tracing_func_irqinfo() argument
468 set_tracing_filters(struct perf_ftrace * ftrace) set_tracing_filters() argument
498 set_tracing_depth(struct perf_ftrace * ftrace) set_tracing_depth() argument
514 set_tracing_percpu_buffer_size(struct perf_ftrace * ftrace) set_tracing_percpu_buffer_size() argument
529 set_tracing_trace_inherit(struct perf_ftrace * ftrace) set_tracing_trace_inherit() argument
540 set_tracing_sleep_time(struct perf_ftrace * ftrace) set_tracing_sleep_time() argument
551 set_tracing_funcgraph_args(struct perf_ftrace * ftrace) set_tracing_funcgraph_args() argument
561 set_tracing_funcgraph_retval(struct perf_ftrace * ftrace) set_tracing_funcgraph_retval() argument
576 set_tracing_funcgraph_retaddr(struct perf_ftrace * ftrace) set_tracing_funcgraph_retaddr() argument
586 set_tracing_funcgraph_irqs(struct perf_ftrace * ftrace) set_tracing_funcgraph_irqs() argument
597 set_tracing_funcgraph_verbose(struct perf_ftrace * ftrace) set_tracing_funcgraph_verbose() argument
614 set_tracing_funcgraph_tail(struct perf_ftrace * ftrace) set_tracing_funcgraph_tail() argument
625 set_tracing_thresh(struct perf_ftrace * ftrace) set_tracing_thresh() argument
639 set_tracing_options(struct perf_ftrace * ftrace) set_tracing_options() argument
724 select_tracer(struct perf_ftrace * ftrace) select_tracer() argument
741 __cmd_ftrace(struct perf_ftrace * ftrace) __cmd_ftrace() argument
854 make_histogram(struct perf_ftrace * ftrace,int buckets[],char * buf,size_t len,char * linebuf) make_histogram() argument
943 display_histogram(struct perf_ftrace * ftrace,int buckets[]) display_histogram() argument
1042 prepare_func_latency(struct perf_ftrace * ftrace) prepare_func_latency() argument
1087 start_func_latency(struct perf_ftrace * ftrace) start_func_latency() argument
1100 stop_func_latency(struct perf_ftrace * ftrace) stop_func_latency() argument
1109 read_func_latency(struct perf_ftrace * ftrace,int buckets[]) read_func_latency() argument
1117 cleanup_func_latency(struct perf_ftrace * ftrace) cleanup_func_latency() argument
1126 __cmd_latency(struct perf_ftrace * ftrace) __cmd_latency() argument
1207 prepare_func_profile(struct perf_ftrace * ftrace) prepare_func_profile() argument
1229 add_func_duration(struct perf_ftrace * ftrace,char * func,double time_ns) add_func_duration() argument
1270 parse_func_duration(struct perf_ftrace * ftrace,char * line,size_t len) parse_func_duration() argument
1376 print_profile_result(struct perf_ftrace * ftrace) print_profile_result() argument
1423 __cmd_profile(struct perf_ftrace * ftrace) __cmd_profile() argument
1528 struct perf_ftrace *ftrace = cb; perf_ftrace_config() local
1674 struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; parse_func_tracer_opts() local
1695 struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; parse_graph_tracer_opts() local
1755 struct perf_ftrace ftrace = { cmd_ftrace() local
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/linux/tools/testing/selftests/ftrace/test.d/direct/
H A Dftrace-direct.tc5 rmmod ftrace-direct ||:
6 if ! modprobe ftrace-direct ; then
16 rmmod ftrace-direct
23 modprobe ftrace-direct
24 rmmod ftrace-direct
29 modprobe ftrace-direct
31 rmmod ftrace-direct
34 modprobe ftrace-direct
37 rmmod ftrace-direct
40 modprobe ftrace-direct
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H A Dkprobe-direct.tc6 rmmod ftrace-direct ||:
7 if ! modprobe ftrace-direct ; then
17 rmmod ftrace-direct
23 modprobe ftrace-direct
29 rmmod ftrace-direct
74 modprobe ftrace-direct-too
78 rmmod ftrace-direct-too
/linux/tools/perf/util/
H A Dbpf_ftrace.c10 #include "util/ftrace.h"
22 int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace) in perf_ftrace__latency_prepare_bpf() argument
28 if (!list_empty(&ftrace->filters)) { in perf_ftrace__latency_prepare_bpf()
29 if (!list_is_singular(&ftrace->filters)) { in perf_ftrace__latency_prepare_bpf()
33 func = list_first_entry(&ftrace->filters, struct filter_entry, list); in perf_ftrace__latency_prepare_bpf()
38 list_for_each(pos, &ftrace->event_pair) in perf_ftrace__latency_prepare_bpf()
53 skel->rodata->bucket_range = ftrace->bucket_range; in perf_ftrace__latency_prepare_bpf()
54 skel->rodata->min_latency = ftrace->min_latency; in perf_ftrace__latency_prepare_bpf()
55 skel->rodata->bucket_num = ftrace->bucket_num; in perf_ftrace__latency_prepare_bpf()
56 if (ftrace in perf_ftrace__latency_prepare_bpf()
168 perf_ftrace__latency_read_bpf(struct perf_ftrace * ftrace,int buckets[],struct stats * stats) perf_ftrace__latency_read_bpf() argument
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H A Dftrace.h53 int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace);
54 int perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace);
55 int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace);
56 int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace,
58 int perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace);
63 perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace __maybe_unused) in perf_ftrace__latency_prepare_bpf()
69 perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace __maybe_unused) in perf_ftrace__latency_start_bpf()
75 perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused) in perf_ftrace__latency_stop_bpf()
81 perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused, in perf_ftrace__latency_read_bpf()
89 perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace __maybe_unused) in perf_ftrace__latency_cleanup_bpf()
/linux/Documentation/trace/
H A Dboottime-trace.rst13 device initialization with full features of ftrace including per-event
23 boot config file [1]_. All options are under "ftrace." or "kernel."
40 Dump ftrace on Oops. If MODE = 1 or omitted, dump trace buffer
59 These options can be used for each instance including global ftrace node.
61 ftrace.[instance.INSTANCE.]options = OPT1[, OPT2[...]]
62 Enable given ftrace options.
64 ftrace.[instance.INSTANCE.]tracing_on = 0|1
68 ftrace.[instance.INSTANCE.]trace_clock = CLOCK
69 Set given CLOCK to ftrace's trace_clock.
71 ftrace.[instance.INSTANCE.]buffer_size = SIZE
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H A Dfprobe.rst13 feature in ftrace.
23 The fprobe is a wrapper of ftrace (+ kretprobe-like return callback) to
46 The register_fprobe_ips() enables a fprobe by ftrace-location addresses.
80 Same as ftrace, the registered callbacks will start being called some time
82 Documentation/trace/ftrace.rst.
110 This is the ftrace address of the traced function (both entry and exit).
112 the address where the ftrace is instrumented.
143 Since the recursion safeness of the fprobe (and ftrace) is a bit different
178 which is traced by other ftrace users is called from the entry_handler.
189 counter may not work correctly, because ftrace skips the fprobe function which
/linux/samples/ftrace/
H A DMakefile3 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct.o
4 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct-too.o
5 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct-modify.o
6 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT_MULTI) += ftrace-direct-multi.o
7 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT_MULTI) += ftrace-direct-multi-modify.o
8 obj-$(CONFIG_SAMPLE_FTRACE_OPS) += ftrace-ops.o
/linux/tools/testing/ktest/examples/bootconfigs/
H A Dboottrace.bconf1 ftrace.event {
33 ftrace.instance {
36 ftrace.filters = "user_*"
45 ftrace.filters = "kernel_*"
51 ftrace.alloc_snapshot
57 ftrace = function
/linux/tools/perf/tests/shell/
H A Dftrace.sh2 # perf ftrace tests
7 # perf ftrace commands only works for root
9 echo "perf ftrace test [Skipped: no permission]"
13 output=$(mktemp /tmp/__perf_test.ftrace.XXXXXX)
31 echo "perf ftrace list test"
32 perf ftrace -F > "${output}"
37 echo "perf ftrace list test [Success]"
41 echo "perf ftrace trace test"
42 perf ftrace trace --graph-opts depth=5 sleep 0.1 > "${output}"
50 echo "perf ftrace trac
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/linux/tools/perf/Documentation/
H A Dperf-ftrace.txt1 perf-ftrace(1)
6 perf-ftrace - simple wrapper for kernel's ftrace functionality
12 'perf ftrace' {trace|latency|profile} <command>
16 The 'perf ftrace' command provides a collection of subcommands which use
17 kernel's ftrace infrastructure.
19 'perf ftrace trace' is a simple wrapper of the ftrace. It only supports
23 'perf ftrace latency' calculates execution latency of a given function
26 'perf ftrace profile' show a execution profile for each function including
29 The following options apply to perf ftrace.
60 OPTIONS for 'perf ftrace trace'
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/linux/tools/testing/selftests/ftrace/test.d/trigger/
H A Dtrigger-trace-marker-synthetic.tc15 echo 'hist:keys=common_pid:ts0=common_timestamp.usecs if buf == "start"' > events/ftrace/print/trig…
16 …tamp.usecs-$ts0:onmatch(ftrace.print).latency($lat) if buf == "end"' >> events/ftrace/print/trigger
21 cnt=`grep 'hitcount: *1$' events/ftrace/print/hist | wc -l`
H A Dtrigger-trace-marker-hist.tc14 echo 'hist:keys=common_pid' > events/ftrace/print/trigger
16 grep 'hitcount: *10$' events/ftrace/print/hist > /dev/null || \
H A Dtrigger-trace-marker-synthetic-kernel.tc16 …ommon_timestamp.usecs-$ts0:onmatch(sched.sched_waking).latency($lat)' > events/ftrace/print/trigger
21 grep 'hitcount: *1$' events/ftrace/print/hist > /dev/null || \
/linux/samples/
H A DMakefile27 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace/
28 obj-$(CONFIG_SAMPLE_FTRACE_DIRECT_MULTI) += ftrace/
29 obj-$(CONFIG_SAMPLE_FTRACE_OPS) += ftrace/
30 obj-$(CONFIG_SAMPLE_TRACE_ARRAY) += ftrace/
/linux/arch/sh/kernel/
H A DMakefile39 obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
40 obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
41 obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
/linux/tools/testing/selftests/rcutorture/bin/
H A Dparse-console.sh186 # don't create $file.ftrace. Otherwise output the results to $file.ftrace
187 extract_ftrace_from_console $file > $file.ftrace
188 if [ ! -s $file.ftrace ]; then
189 rm -f $file.ftrace
/linux/arch/powerpc/tools/
H A Dftrace-gen-ool-stubs.sh35 .pushsection .tramp.ftrace.text,"aw"
45 .pushsection .tramp.ftrace.init,"aw"
/linux/Documentation/arch/riscv/
H A Dcmodx.rst16 Dynamic ftrace
19 Essentially, dynamic ftrace directs the control flow by inserting a function
25 RISC-V ftrace. Kernel preemption makes things even worse as it allows the old
28 In order to get rid of stop_machine() and run dynamic ftrace with full kernel
35 By fixing down the first instruction, AUIPC, the range of the ftrace trampoline
/linux/tools/power/pm-graph/config/
H A Dfreeze.cfg25 # output folder for html, ftrace, and dmesg. Use {date} and {time} for current values
33 # add the dmesg and ftrace log to the html output (default: false)
76 # gather detailed ftrace callgraph data on all timeline events (default: false)
H A Dstandby.cfg25 # output folder for html, ftrace, and dmesg. Use {date} and {time} for current values
33 # add the dmesg and ftrace log to the html output (default: false)
76 # gather detailed ftrace callgraph data on all timeline events (default: false)
/linux/tools/bootconfig/scripts/
H A Dbconf2ftrace.sh66 . `dirname $0`/ftrace.sh
258 set_array_of ${instance}.ftrace.filters \
260 set_array_of ${instance}.ftrace.notrace \
/linux/Documentation/livepatch/
H A Dlivepatch.rst43 Most of these problems are solved by using the dynamic ftrace framework as
44 a base. A Kprobe is registered as a ftrace handler when the function entry
46 a live patch is called with the help of a custom ftrace handler. But there are
327 ftrace handler is registered\ [#]_. This stage is indicated by a value of '1'
336 Note that functions might be patched multiple times. The ftrace handler
339 The right implementation is selected by the ftrace handler, see
356 the ftrace handler is unregistered and the struct klp_ops is
378 patch are removed from the corresponding struct klp_ops. The ftrace handler
415 Livepatch is based on the dynamic ftrace. In particular, functions
416 implementing ftrace or the livepatch ftrace handler could not be
[all …]
/linux/tools/testing/selftests/net/tcp_ao/
H A DMakefile34 LIBSRC := ftrace.c ftrace-tcp.c kconfig.c netlink.c
/linux/tools/testing/selftests/ftrace/
H A DREADME3 This is a collection of testcases for ftrace tracing feature in the Linux
4 kernel. Since ftrace exports interfaces via the debugfs, we just need
7 Running the ftrace testcases

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