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/linux/Documentation/arch/powerpc/
H A Dimc.rst62 # perf list
77 # ./perf stat -e "nest_mcs01/PM_MCS01_64B_WR_DISP_PORT01/" -a --per-socket
83 # ./perf stat -e "core_imc/CPM_NON_IDLE_INST/" -C 0 -I 1000
89 # ./perf stat -e "thread_imc/CPM_NON_IDLE_PCYC/" make
159 # perf list
167 # perf record -e trace_imc/trace_cycles/ yes > /dev/null
168 [ perf record: Woken up 1 times to write data ]
169 [ perf record: Captured and wrote 0.012 MB perf.data (21 samples) ]
171 The `perf.data` generated, can be read using perf report.
181 Performance data using `perf top` with and without trace-imc event.
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/linux/tools/perf/tests/shell/
H A Dtrace_btf_general.sh2 # perf trace BTF general tests
29 echo "Testing perf trace's string augmentation"
30 output="$(perf trace --sort-events -e renameat* --max-events=1 -- mv ${file1} ${file2} 2>&1)"
39 echo "Testing perf trace's buffer augmentation"
41 output="$(perf trace --sort-events -e write --max-events=1 -- echo "${buffer}" 2>&1)"
50 echo "Testing perf trace's struct augmentation"
51 output="$(perf trace --sort-events -e clock_nanosleep --force-btf --max-events=1 -- sleep 1 2>&1)"
69 # don't overwrite user's perf config
72 perf config trace.show_arg_names=false trace.show_duration=false \
H A Dtest_data_symbol.sh13 perf mem record -e list 2>&1 | grep -E -q 'available' && return 0
21 TEST_PROGRAM="perf test -w datasym"
22 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
28 result=$(perf mem report -i ${PERF_DATA} -s symbol_daddr -q 2>&1 |
59 mem_events="$(perf mem record -v -e list 2>&1)"
75 mem_events="$(perf mem record -v --ldlat=150 -e list 2>&1)"
82 # perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't
85 perf mem record -vvv -o ${PERF_DATA} -C 0 -- taskset -c 0 $TEST_PROGRAM 2>"${ERR_FILE}"
87 perf mem record -vvv --all-user -o ${PERF_DATA} -- $TEST_PROGRAM 2>"${ERR_FILE}"
H A Dtest_arm_coresight_disasm.sh7 # that decoding has gone wrong either in OpenCSD, Perf or in the range reconstruction in
11 perf list pmu | grep -q 'cs_etm//' && return 0
23 perfdata_dir=$(mktemp -d /tmp/__perf_test.perf.data.XXXXX)
24 perfdata=${perfdata_dir}/perf.data
47 perf record -o ${perfdata} -e cs_etm//k --kcore -- touch $file > /dev/null 2>&1
48 perf script -i ${perfdata} -s python:${script_path} -- \
59 perf record -o ${perfdata} -e cs_etm//u -- touch $file > /dev/null 2>&1
60 perf script -i ${perfdata} -s python:${script_path} -- \
H A Djitdump-python.sh19 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXXX)
37 cat <<EOF | perf record -k 1 -g --call-graph dwarf -o "${PERF_DATA}" \
56 _PID=$(perf report -i "${PERF_DATA}" -F pid -q -g none | cut -d: -f1 -s)
59 echo "Generate JIT-ed DSOs using perf inject"
60 DEBUGINFOD_URLS='' perf inject -i "${PERF_DATA}" -j -o "${PERF_DATA}.jit"
64 perf buildid-cache -a "${F}"
68 NUM=$(perf report -i "${PERF_DATA}.jit" -s sym | grep -cE 'py::(foo|bar|baz):<stdin>')
74 perf buildid-cache -r "${F}"
H A Dstat+event_uniquifying.sh2 # perf stat events uniquifying
26 # Read events from perf list with and without -v. With -v the duplicate PMUs
27 # aren't deduplicated. Note, json events are listed by perf list without a
29 read -ra pmu_events <<< "$(perf list --raw pmu)"
30 read -ra pmu_v_events <<< "$(perf list -v --raw pmu)"
45 if ! perf stat -e "$event" -A -o ${stat_output} -- true; then
46 echo "Error running perf stat for event '$event' [Skip]"
H A Dstat_all_metrics.sh2 # perf all metrics test
15 test_prog="perf test -w noploop"
19 for m in $(perf list --raw-dump metrics); do
21 result=$(perf stat -M "$m" $system_wide_flag -- $test_prog 2>&1)
30 if [[ $(perf list --raw-dump $m) == "Default"* ]]
61 if [[ $(perf list --raw-dump $m) == "Default"* ]]
104 result=$(perf stat -M "$m" $system_wide_flag -- perf bench internals synthesize 2>&1)
H A Dstat_bpf_counters.sh2 # perf stat --bpf-counters test (exclusive)
7 workload="perf test -w sqrtloop"
44 …base_instructions=$(perf stat --no-big-num -e instructions -- $workload 2>&1 | awk '/instructions/…
45 …bpf_instructions=$(perf stat --no-big-num --bpf-counters -e instructions -- $workload 2>&1 | awk …
54 …stat_output=$(perf stat --no-big-num -e instructions/name=base_instructions/,instructions/name=bpf…
63 if ! perf stat -e instructions --bpf-counters true > /dev/null 2>&1; then
66 perf --no-pager stat -e instructions --bpf-counters true || true
H A Dtest_arm_spe_fork.sh8 perf list pmu | grep -E -q 'arm_spe_[0-9]+//' && return 0
14 TEST_PROGRAM="perf test -w sqrtloop 10"
15 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
28 perf record -o ${PERF_DATA} -e arm_spe/period=65536/ -vvv -- $TEST_PROGRAM > ${PERF_RECORD_LOG} 2>&…
31 # Check if perf hangs by checking the perf-record logs.
H A Dstat_all_pfm.sh2 # perf all libpfm4 events test
5 if perf version --build-options | grep HAVE_LIBPFM | grep -q OFF
12 for p in $(perf list --raw-dump pfm)
20 result=$(perf stat --pfm-events "$p" true 2>&1)
35 result=$(perf stat --pfm-events "$p" perf bench internals synthesize 2>&1)
/linux/tools/perf/Documentation/
H A Dperf-record.txt1 perf-record(1)
6 perf-record - Run a command and record its profile into perf.data
11 'perf record' [-e <EVENT> | --event=EVENT] [-a] <command>
12 'perf record' [-e <EVENT> | --event=EVENT] [-a] \-- <command> [<options>]
17 from it, into perf.data - without displaying anything.
19 This file can then be inspected later on, using 'perf report'.
31 - a symbolic event name (use 'perf list' to list all events)
40 linkperf:perf-list[1] man page for details on event modifiers.
79 See the linkperf:perf-list[1] man page for more parameters.
89 perf record -e some_event/@cfg1,@cfg2=config/ ...
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H A Dperf-data.txt1 perf-data(1)
6 perf-data - Data file related processing
11 'perf data' [<common options>] <command> [<options>]",
20 Converts perf data file into another format.
23 perf --debug data-convert data convert ...
37 Specify input perf data file path.
53 linkperf:perf[1]
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
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'
138 OPTIONS for 'perf ftrace latency'
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H A Dperf-version.txt1 perf-version(1)
6 perf-version - display the version of perf binary
10 'perf version' [--build-options]
14 With no options given, the 'perf version' prints the perf version
H A Dperf-iostat.txt1 perf-iostat(1)
6 perf-iostat - Show I/O performance metrics
11 'perf iostat' list
12 'perf iostat' <ports> \-- <command> [<options>]
42 $ perf iostat list
54 $ perf iostat -- dd if=/dev/zero of=/dev/nvme0n1 bs=1M oflag=direct
73 $ perf iostat 0000:17,0:3a -- dd if=/dev/zero of=/dev/nvme0n1 bs=1M oflag=direct
88 linkperf:perf-stat[1]
/linux/Documentation/admin-guide/perf/
H A Darm-ccn.rst10 PMU (perf) driver
13 The CCN driver registers a perf PMU driver, which provides
20 events, that can be used with perf tool. For example "xp_valid_flit"
49 Example of perf tool use::
51 / # perf list | grep ccn
57 / # perf stat -a -e ccn/cycles/,ccn/xp_valid_flit,xp=1,port=0,vc=1,dir=1/ \
60 The driver does not support sampling, therefore "perf record" will
61 not work. Per-task (without "-a") perf sessions are not supported.
H A Dimx-ddr.rst8 control register which causes a large number of PERF signals to be generated.
19 hardware supported that can be used with perf tool, see /sys/bus/event_source/
25 perf stat -a -e imx8_ddr0/cycles/ cmd
26 perf stat -a -e imx8_ddr0/read/,imx8_ddr0/write/ cmd
45 incremented. Perf counter is incremented if::
54 perf stat -a -e imx8_ddr0/axid-read,axi_mask=0xMMMM,axi_id=0xDDDD/ cmd
55 perf stat -a -e imx8_ddr0/axid-write,axi_mask=0xMMMM,axi_id=0xDDDD/ cmd
65 perf stat -a -e imx8_ddr0/axid-read,axi_id=0x12/ cmd, which will monitor ARID=0x12
92 perf stat -a -e imx8_ddr0/axid-read,axi_mask=0xMMMM,axi_id=0xDDDD,axi_channel=0xH/ cmd
93 perf stat -a -e imx8_ddr0/axid-write,axi_mask=0xMMMM,axi_id=0xDDDD,axi_channel=0xH/ cmd
H A Dthunderx2-pmu.rst19 PMU UNCORE (perf) driver:
21 The thunderx2_pmu driver registers per-socket perf PMUs for the DMC and
27 The driver does not support sampling, therefore "perf record" will not
28 work. Per-task perf sessions are also not supported.
32 # perf stat -a -e uncore_dmc_0/cnt_cycles/ sleep 1
34 # perf stat -a -e \
40 # perf stat -a -e \
/linux/Documentation/trace/coresight/
H A Dcoresight-config.rst15 can then be easily enabled from sysfs or perf.
115 2) The configuration is enabled. For example 'perf' may select the
118 perf record -e cs_etm/autofdo/ myapp
122 3) perf starts tracing on the system. As each ETMv4 that perf uses for
130 5) At the end of the perf session, the configuration will be disabled.
209 Using Configurations in perf
213 also declared in the perf 'cs_etm' event infrastructure so that they can
214 be selected when running trace under perf::
220 The key directory here is 'events' - a generic perf directory which allows
221 selection on the perf command line. As with the sinks entries, this provides
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/linux/Documentation/arch/arm64/
H A Dperf.rst6 Perf title
9 Perf Event Attributes
95 Perf Userspace PMU Hardware Counter Access
100 The perf userspace tool relies on the PMU to monitor events. It offers an
122 It is necessary to open the event using the perf tool interface with config1:1
133 and perf_evsel__read() functions. See `tools/lib/perf/tests/test-evsel.c`_ for
143 Have a look at `tools/perf/arch/arm64/tests/user-events.c`_ for an example. It
144 can be run using the perf tool to check that the access to the registers works
149 perf test -v user
163 .. _tools/perf/arch/arm64/tests/user-events.c:
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/linux/tools/testing/selftests/turbostat/
H A Dadded_perf_counters.py17 return f'perf/{self.subsys}/{self.event},{counter_scope},{counter_type},{column_name}'
37 perf = which('perf')
38 if perf is None:
39 print('SKIP: Could not find perf binary, thus could not determine perf access.')
43 proc_perf = subprocess.run([perf, 'stat', '-e', counter_name, '--timeout', '10'],
47 print(f'SKIP: Could not read {counter_name} perf counter.')
51 print(f'SKIP: Could not read {counter_name} perf counter.')
61 print('SKIP: Could not read any perf counter.')
/linux/tools/perf/scripts/perl/
H A Dcheck-perf-trace.pl1 # perf script event handlers, generated by perf script -g perl
6 # strings, common_xxx() calls back into perf, begin, end, unhandled
10 use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
11 use lib "./Perf-Trace-Util/lib";
12 use Perf::Trace::Core;
13 use Perf::Trace::Context;
14 use Perf::Trace::Util;
/linux/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/
H A DContext.pm1 package Perf::Trace::Context;
23 XSLoader::load('Perf::Trace::Context', $VERSION);
29 Perf::Trace::Context - Perl extension for accessing functions in perf.
33 use Perf::Trace::Context;
37 Perf (script) documentation
/linux/tools/lib/perf/Documentation/examples/
H A Dcounting.c2 #include <perf/evlist.h>
3 #include <perf/evsel.h>
4 #include <perf/cpumap.h>
5 #include <perf/threadmap.h>
6 #include <perf/mmap.h>
7 #include <perf/core.h>
8 #include <perf/event.h>
/linux/tools/perf/
H A Dperf.c2 * perf.c
6 * This is the main hub from which the sub-commands (perf stat,
7 * perf top, perf record, perf report, etc.) are started.
10 #include "perf.h"
26 #include "perf-sys.h"
29 #include <perf/core.h>
389 /* Turn "perf cmd --help" into "perf help cmd" */ in handle_internal_command()
411 if (asprintf(&cmd, "perf-%s", argv[0]) < 0) in execv_dashed_external()
415 * argv[0] must be the perf command, but the argv array in execv_dashed_external()
467 exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT); in main()
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