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15370 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Thomas Richter
|
e47749f179 |
perf jevent: fix core dump on software events on s390
Running commands such as
# ./perf stat -e cs -- true
Segmentation fault (core dumped)
# ./perf stat -e cpu-clock-- true
Segmentation fault (core dumped)
#
dump core. This should not happen as these events are defined
even when no hardware PMU is available.
Debugging this reveals this call chain:
perf_pmus__find_by_type(type=1)
+--> pmu_read_sysfs(core_only=false)
+--> perf_pmu__find2(dirfd=3, name=0x152a113 "software")
+--> perf_pmu__lookup(pmus=0x14f0568 <other_pmus>, dirfd=3,
lookup_name=0x152a113 "software")
+--> perf_pmu__find_events_table (pmu=0x1532130)
Now the pmu is "software" and it tries to find a proper table
generated by the pmu-event generation process for s390:
# cd pmu-events/
# ./jevents.py s390 all /root/linux/tools/perf/pmu-events/arch |\
grep -E '^const struct pmu_table_entry'
const struct pmu_table_entry pmu_events__cf_z10[] = {
const struct pmu_table_entry pmu_events__cf_z13[] = {
const struct pmu_table_entry pmu_metrics__cf_z13[] = {
const struct pmu_table_entry pmu_events__cf_z14[] = {
const struct pmu_table_entry pmu_metrics__cf_z14[] = {
const struct pmu_table_entry pmu_events__cf_z15[] = {
const struct pmu_table_entry pmu_metrics__cf_z15[] = {
const struct pmu_table_entry pmu_events__cf_z16[] = {
const struct pmu_table_entry pmu_metrics__cf_z16[] = {
const struct pmu_table_entry pmu_events__cf_z196[] = {
const struct pmu_table_entry pmu_events__cf_zec12[] = {
const struct pmu_table_entry pmu_metrics__cf_zec12[] = {
const struct pmu_table_entry pmu_events__test_soc_cpu[] = {
const struct pmu_table_entry pmu_metrics__test_soc_cpu[] = {
const struct pmu_table_entry pmu_events__test_soc_sys[] = {
#
However event "software" is not listed, as can be seen in the
generated const struct pmu_events_map pmu_events_map[].
So in function perf_pmu__find_events_table(), the variable
table is initialized to NULL, but never set to a proper
value. The function scans all generated &pmu_events_map[]
tables, but no table matches, because the tables are
s390 CPU Measurement unit specific:
i = 0;
for (;;) {
const struct pmu_events_map *map = &pmu_events_map[i++];
if (!map->arch)
break;
--> the maps are there because the build generated them
if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
table = &map->event_table;
break;
}
--> Since no matching CPU string the table var remains 0x0
}
free(cpuid);
if (!pmu)
return table;
--> The pmu is "software" so it exists and no return
--> and here perf dies because table is 0x0
for (i = 0; i < table->num_pmus; i++) {
...
}
return NULL;
Fix this and do not access the table variable. Instead return 0x0
which is the same return code when the for-loop was not successful.
Output after:
# ./perf stat -e cs -- true
Performance counter stats for 'true':
0 cs
0.000853105 seconds time elapsed
0.000061000 seconds user
0.000827000 seconds sys
# ./perf stat -e cpu-clock -- true
Performance counter stats for 'true':
0.25 msec cpu-clock # 0.341 CPUs utilized
0.000728383 seconds time elapsed
0.000055000 seconds user
0.000706000 seconds sys
# ./perf stat -e cycles -- true
Performance counter stats for 'true':
<not supported> cycles
0.000767298 seconds time elapsed
0.000055000 seconds user
0.000739000 seconds sys
#
Fixes:
|
||
Ian Rogers
|
eaaebb01a7 |
perf pmu: Ensure all alias variables are initialized
Fix an error detected by memory sanitizer:
```
==4033==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x55fb0fbedfc7 in read_alias_info tools/perf/util/pmu.c:457:6
#1 0x55fb0fbea339 in check_info_data tools/perf/util/pmu.c:1434:2
#2 0x55fb0fbea339 in perf_pmu__check_alias tools/perf/util/pmu.c:1504:9
#3 0x55fb0fbdca85 in parse_events_add_pmu tools/perf/util/parse-events.c:1429:32
#4 0x55fb0f965230 in parse_events_parse tools/perf/util/parse-events.y:299:6
#5 0x55fb0fbdf6b2 in parse_events__scanner tools/perf/util/parse-events.c:1822:8
#6 0x55fb0fbdf8c1 in __parse_events tools/perf/util/parse-events.c:2094:8
#7 0x55fb0fa8ffa9 in parse_events tools/perf/util/parse-events.h:41:9
#8 0x55fb0fa8ffa9 in test_event tools/perf/tests/parse-events.c:2393:8
#9 0x55fb0fa8f458 in test__pmu_events tools/perf/tests/parse-events.c:2551:15
#10 0x55fb0fa6d93f in run_test tools/perf/tests/builtin-test.c:242:9
#11 0x55fb0fa6d93f in test_and_print tools/perf/tests/builtin-test.c:271:8
#12 0x55fb0fa6d082 in __cmd_test tools/perf/tests/builtin-test.c:442:5
#13 0x55fb0fa6d082 in cmd_test tools/perf/tests/builtin-test.c:564:9
#14 0x55fb0f942720 in run_builtin tools/perf/perf.c:322:11
#15 0x55fb0f942486 in handle_internal_command tools/perf/perf.c:375:8
#16 0x55fb0f941dab in run_argv tools/perf/perf.c:419:2
#17 0x55fb0f941dab in main tools/perf/perf.c:535:3
```
Fixes:
|
||
|
Ian Rogers
|
d1bac78e26 |
perf jevents metric: Fix type of strcmp_cpuid_str
The parser wraps all strings as Events, so the input is an
Event. Using a string would be bad as functions like Simplify are
called on the arguments, which wouldn't be present on a string.
Fixes:
|
||
|
Ian Rogers
|
33b725ce7b |
perf trace: Avoid compile error wrt redefining bool
Make part of an existing TODO conditional to avoid the following build
error:
```
tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c:26:14: error: cannot combine with previous 'char' declaration specifier
26 | typedef char bool;
| ^
include/stdbool.h:20:14: note: expanded from macro 'bool'
20 | #define bool _Bool
| ^
tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c:26:1: error: typedef requires a name [-Werror,-Wmissing-declarations]
26 | typedef char bool;
| ^~~~~~~~~~~~~~~~~
2 errors generated.
```
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230913184957.230076-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
|
||
|
Ian Rogers
|
4a73fca226 |
perf bpf-prologue: Remove unused file
Commit |
||
Arnaldo Carvalho de Melo
|
678ddf730a |
perf bench sched-seccomp-notify: Use the tools copy of seccomp.h UAPI
To keep perf building in systems where types and defines used in this
new benchmark are not available, such as:
12 13.46 centos:stream : FAIL gcc version 8.5.0 20210514 (Red Hat 8.5.0-20) (GCC)
bench/sched-seccomp-notify.c: In function 'user_notif_syscall':
bench/sched-seccomp-notify.c:55:27: error: 'SECCOMP_RET_USER_NOTIF' undeclared (first use in this function); did you mean 'SECCOMP_RET_ERRNO'?
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF),
^~~~~~~~~~~~~~~~~~~~~~
/git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:49:59: note: in definition of macro 'BPF_STMT'
#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k }
^
bench/sched-seccomp-notify.c:55:27: note: each undeclared identifier is reported only once for each function it appears in
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF),
^~~~~~~~~~~~~~~~~~~~~~
/git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:49:59: note: in definition of macro 'BPF_STMT'
#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k }
^
bench/sched-seccomp-notify.c:55:3: error: missing initializer for field 'k' of 'struct sock_filter' [-Werror=missing-field-initializers]
BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF),
^~~~~~~~
In file included from bench/sched-seccomp-notify.c:5:
/git/perf-6.6.0-rc1/tools/include/uapi/linux/filter.h:28:8: note: 'k' declared here
__u32 k; /* Generic multiuse field */
^
bench/sched-seccomp-notify.c: In function 'user_notification_sync_loop':
bench/sched-seccomp-notify.c:70:28: error: storage size of 'resp' isn't known
struct seccomp_notif_resp resp;
^~~~
bench/sched-seccomp-notify.c:71:23: error: storage size of 'req' isn't known
struct seccomp_notif req;
^~~
bench/sched-seccomp-notify.c:76:23: error: 'SECCOMP_IOCTL_NOTIF_RECV' undeclared (first use in this function); did you mean 'SECCOMP_MODE_STRICT'?
if (ioctl(listener, SECCOMP_IOCTL_NOTIF_RECV, &req))
^~~~~~~~~~~~~~~~~~~~~~~~
SECCOMP_MODE_STRICT
bench/sched-seccomp-notify.c:86:23: error: 'SECCOMP_IOCTL_NOTIF_SEND' undeclared (first use in this function); did you mean 'SECCOMP_RET_ACTION'?
if (ioctl(listener, SECCOMP_IOCTL_NOTIF_SEND, &resp))
^~~~~~~~~~~~~~~~~~~~~~~~
SECCOMP_RET_ACTION
bench/sched-seccomp-notify.c:71:23: error: unused variable 'req' [-Werror=unused-variable]
struct seccomp_notif req;
^~~
bench/sched-seccomp-notify.c:70:28: error: unused variable 'resp' [-Werror=unused-variable]
struct seccomp_notif_resp resp;
^~~~
14 11.31 debian:10 : FAIL gcc version 8.3.0 (Debian 8.3.0-6)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/ZQGhjaojgOGtSNk6@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Arnaldo Carvalho de Melo
|
417ecb614f |
tools headers UAPI: Copy seccomp.h to be able to build 'perf bench' in older systems
The new 'perf bench' for sched-seccomp-notify uses defines and types not
available in older systems where we want to have perf available, so grab
a copy of this UAPI from the kernel sources to allow that.
This will be checked in the future for drift from the original when we
build the perf tool, that will warn when that happens like:
make: Entering directory '/var/home/acme/git/perf-tools/tools/perf'
BUILD: Doing 'make -j32' parallel build
Warning: Kernel ABI header differences:
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/ZQGhMXtwX7RvV3ya@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Arnaldo Carvalho de Melo
|
f7875966dc |
tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack syscalls with the kernel sources
To pick the changes in these csets: |
||
|
Arnaldo Carvalho de Melo
|
a6e414a4cb |
perf tools: Update copy of libbpf's hashmap.c
To pick the changes in:
|
||
Linus Torvalds
|
535a265d7f |
perf tools changes for v6.6:
perf tools maintainership:
- Add git information for perf-tools and perf-tools-next trees/branches to the
MAINTAINERS file. That is where development now takes place and myself and
Namhyung Kim have write access, more people to come as we emulate other
maintainer groups.
perf record:
- Record kernel data maps when 'perf record --data' is used, so that global variables can
be resolved and used in tools that do data profiling.
perf trace:
- Remove the old, experimental support for BPF events in which a .c file was passed as
an event: "perf trace -e hello.c" to then get compiled and loaded.
The only known usage for that, that shipped with the kernel as an example for such events,
augmented the raw_syscalls tracepoints and was converted to a libbpf skeleton, reusing all
the user space components and the BPF code connected to the syscalls.
In the end just the way to glue the BPF part and the user space type beautifiers changed,
now being performed by libbpf skeletons.
The next step is to use BTF to do pretty printing of all syscall types, as discussed with
Alan Maguire and others.
Now, on a perf built with BUILD_BPF_SKEL=1 we get most if not all path/filenames/strings,
some of the networking data structures, perf_event_attr, etc, i.e. systemwide tracing of
nanosleep calls and perf_event_open syscalls while 'perf stat' runs 'sleep' for 5 seconds:
# perf trace -a -e *nanosleep,perf* perf stat -e cycles,instructions sleep 5
0.000 ( 9.034 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0 (PERF_COUNT_HW_CPU_CYCLES), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 3
9.039 ( 0.006 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0x1 (PERF_COUNT_HW_INSTRUCTIONS), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf-exec), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 4
? ( ): gpm/991 ... [continued]: clock_nanosleep()) = 0
10.133 ( ): sleep/327642 clock_nanosleep(rqtp: { .tv_sec: 5, .tv_nsec: 0 }, rmtp: 0x7ffd36f83ed0) ...
? ( ): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
30.276 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
223.215 (1000.430 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
30.276 (2000.394 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
1230.814 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
1230.814 (1000.404 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
2030.886 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
2237.709 (1000.153 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
? ( ): crond/1172 ... [continued]: clock_nanosleep()) = 0
3242.699 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
2030.886 (2000.385 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
3728.078 ( ): crond/1172 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffe0971dcf0) ...
3242.699 (1000.158 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
4031.409 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
10.133 (5000.375 ms): sleep/327642 ... [continued]: clock_nanosleep()) = 0
Performance counter stats for 'sleep 5':
2,617,347 cycles
1,855,997 instructions # 0.71 insn per cycle
5.002282128 seconds time elapsed
0.000855000 seconds user
0.000852000 seconds sys
#
perf annotate:
- Building with binutils' libopcode now is opt-in (BUILD_NONDISTRO=1) for
licensing reasons, and we missed a build test on tools/perf/tests makefile.
Since we now default to NDEBUG=1, we ended up segfaulting when building with
BUILD_NONDISTRO=1 because a needed initialization routine was being "error
checked" via an assert.
Fix it by explicitly checking the result and aborting instead if it fails.
We better back propagate the error, but at least 'perf annotate' on samples
collected for a BPF program is back working when perf is built with
BUILD_NONDISTRO=1.
perf report/top:
- Add back TUI hierarchy mode header, that is seen when using 'perf report/top --hierarchy'.
- Fix the number of entries for 'e' key in the TUI that was preventing navigation of
lines when expanding an entry.
perf report/script:
- Support cross platform register handling, allowing a perf.data file collected
on one architecture to have registers sampled correctly displayed when
analysis tools such as 'perf report' and 'perf script' are used on a different
architecture.
- Fix handling of event attributes in pipe mode, i.e. when one uses:
perf record -o - | perf report -i -
When no perf.data files are used.
- Handle files generated via pipe mode with a version of perf and then read
also via pipe mode with a different version of perf, where the event attr
record may have changed, use the record size field to properly support this
version mismatch.
perf probe:
- Accessing global variables from uprobes isn't supported, make the error
message state that instead of stating that some minimal kernel version is
needed to have that feature. This seems just a tool limitation, the kernel
probably has all that is needed.
perf tests:
- Fix a reference count related leak in the dlfilter v0 API where the result
of a thread__find_symbol_fb() is not matched with an addr_location__exit()
to drop the reference counts of the resolved components (machine, thread, map,
symbol, etc). Add a dlfilter test to make sure that doesn't regresses.
- Lots of fixes for the 'perf test' written in shell script related to problems
found with the shellcheck utility.
- Fixes for 'perf test' shell scripts testing features enabled when perf is
built with BUILD_BPF_SKEL=1, such as 'perf stat' bpf counters.
- Add perf record sample filtering test, things like the following example, that gets
implemented as a BPF filter attached to the event:
# perf record -e task-clock -c 10000 --filter 'ip < 0xffffffff00000000'
- Improve the way the task_analyzer test checks if libtraceevent is linked,
using 'perf version --build-options' instead of the more expensinve
'perf record -e "sched:sched_switch"'.
- Add support for riscv in the mmap-basic test. (This went as well via the RiscV tree, same contents).
libperf:
- Implement riscv mmap support (This went as well via the RiscV tree, same contents).
perf script:
- New tool that converts perf.data files to the firefox profiler format so that one can use
the visualizer at https://profiler.firefox.com/. Done by Anup Sharma as part of this year's
Google Summer of Code.
One can generate the output and upload it to the web interface but Anup also automated
everything:
perf script gecko -F 99 -a sleep 60
- Support syscall name parsing on arm64.
- Print "cgroup" field on the same line as "comm".
perf bench:
- Add new 'uprobe' benchmark to measure the overhead of uprobes with/without
BPF programs attached to it.
- breakpoints are not available on power9, skip that test.
perf stat:
- Add #num_cpus_online literal to be used in 'perf stat' metrics, and add this extra
'perf test' check that exemplifies its purpose:
TEST_ASSERT_VAL("#num_cpus_online",
expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0);
TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online);
Miscellaneous:
- Improve tool startup time by lazily reading PMU, JSON, sysfs data.
- Improve error reporting in the parsing of events, passing YYLTYPE to error routines,
so that the output can show were the parsing error was found.
- Add 'perf test' entries to check the parsing of events improvements.
- Fix various leak for things detected by -fsanitize=address, mostly things that would
be freed at tool exit, including:
- Free evsel->filter on the destructor.
- Allow tools to register a thread->priv destructor and use it in 'perf trace'.
- Free evsel->priv in 'perf trace'.
- Free string returned by synthesize_perf_probe_point() when the caller fails
to do all it needs.
- Adjust various compiler options to not consider errors some warnings when
building with broken headers found in things like python, flex, bison, as we
otherwise build with -Werror. Some for gcc, some for clang, some for some
specific version of those, some for some specific version of flex or bison, or
some specific combination of these components, bah.
- Allow customization of clang options for BPF target, this helps building on
gentoo where there are other oddities where BPF targets gets passed some compiler
options intended for the native build, so building with WERROR=0 helps while
these oddities are fixed.
- Dont pass ERR_PTR() values to perf_session__delete() in 'perf top' and 'perf lock',
fixing some segfaults when handling some odd failures.
- Add LTO build option.
- Fix format of unordered lists in the perf docs (tools/perf/Documentation).
- Overhaul the bison files, using constructs such as YYNOMEM.
- Remove unused tokens from the bison .y files.
- Add more comments to various structs.
- A few LoongArch enablement patches.
Vendor events (JSON):
- Add JSON metrics for Yitian 710 DDR (aarch64). Things like:
EventName, BriefDescription
visible_window_limit_reached_rd, "At least one entry in read queue reaches the visible window limit.",
visible_window_limit_reached_wr, "At least one entry in write queue reaches the visible window limit.",
op_is_dqsosc_mpc , "A DQS Oscillator MPC command to DRAM.",
op_is_dqsosc_mrr , "A DQS Oscillator MRR command to DRAM.",
op_is_tcr_mrr , "A Temperature Compensated Refresh(TCR) MRR command to DRAM.",
- Add AmpereOne metrics (aarch64).
- Update N2 and V2 metrics (aarch64) and events using Arm telemetry repo.
- Update scale units and descriptions of common topdown metrics on aarch64. Things like:
- "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)",
- "BriefDescription": "Frontend bound L1 topdown metric",
+ "MetricExpr": "100 * (stall_slot_frontend / (#slots * cpu_cycles))",
+ "BriefDescription": "This metric is the percentage of total slots that were stalled due to resource constraints in the frontend of the processor.",
- Update events for intel: meteorlake to 1.04, sapphirerapids to 1.15, Icelake+ metric constraints.
- Update files for the power10 platform.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.6-1-2023-09-05' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Arnaldo Carvalho de Melo:
"perf tools maintainership:
- Add git information for perf-tools and perf-tools-next trees and
branches to the MAINTAINERS file. That is where development now
takes place and myself and Namhyung Kim have write access, more
people to come as we emulate other maintainer groups.
perf record:
- Record kernel data maps when 'perf record --data' is used, so that
global variables can be resolved and used in tools that do data
profiling.
perf trace:
- Remove the old, experimental support for BPF events in which a .c
file was passed as an event: "perf trace -e hello.c" to then get
compiled and loaded.
The only known usage for that, that shipped with the kernel as an
example for such events, augmented the raw_syscalls tracepoints and
was converted to a libbpf skeleton, reusing all the user space
components and the BPF code connected to the syscalls.
In the end just the way to glue the BPF part and the user space
type beautifiers changed, now being performed by libbpf skeletons.
The next step is to use BTF to do pretty printing of all syscall
types, as discussed with Alan Maguire and others.
Now, on a perf built with BUILD_BPF_SKEL=1 we get most if not all
path/filenames/strings, some of the networking data structures,
perf_event_attr, etc, i.e. systemwide tracing of nanosleep calls
and perf_event_open syscalls while 'perf stat' runs 'sleep' for 5
seconds:
# perf trace -a -e *nanosleep,perf* perf stat -e cycles,instructions sleep 5
0.000 ( 9.034 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0 (PERF_COUNT_HW_CPU_CYCLES), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 3
9.039 ( 0.006 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0x1 (PERF_COUNT_HW_INSTRUCTIONS), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf-exec), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 4
? ( ): gpm/991 ... [continued]: clock_nanosleep()) = 0
10.133 ( ): sleep/327642 clock_nanosleep(rqtp: { .tv_sec: 5, .tv_nsec: 0 }, rmtp: 0x7ffd36f83ed0) ...
? ( ): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
30.276 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
223.215 (1000.430 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
30.276 (2000.394 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
1230.814 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
1230.814 (1000.404 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
2030.886 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
2237.709 (1000.153 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
? ( ): crond/1172 ... [continued]: clock_nanosleep()) = 0
3242.699 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
2030.886 (2000.385 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
3728.078 ( ): crond/1172 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffe0971dcf0) ...
3242.699 (1000.158 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
4031.409 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
10.133 (5000.375 ms): sleep/327642 ... [continued]: clock_nanosleep()) = 0
Performance counter stats for 'sleep 5':
2,617,347 cycles
1,855,997 instructions # 0.71 insn per cycle
5.002282128 seconds time elapsed
0.000855000 seconds user
0.000852000 seconds sys
perf annotate:
- Building with binutils' libopcode now is opt-in (BUILD_NONDISTRO=1)
for licensing reasons, and we missed a build test on
tools/perf/tests makefile.
Since we now default to NDEBUG=1, we ended up segfaulting when
building with BUILD_NONDISTRO=1 because a needed initialization
routine was being "error checked" via an assert.
Fix it by explicitly checking the result and aborting instead if it
fails.
We better back propagate the error, but at least 'perf annotate' on
samples collected for a BPF program is back working when perf is
built with BUILD_NONDISTRO=1.
perf report/top:
- Add back TUI hierarchy mode header, that is seen when using 'perf
report/top --hierarchy'.
- Fix the number of entries for 'e' key in the TUI that was
preventing navigation of lines when expanding an entry.
perf report/script:
- Support cross platform register handling, allowing a perf.data file
collected on one architecture to have registers sampled correctly
displayed when analysis tools such as 'perf report' and 'perf
script' are used on a different architecture.
- Fix handling of event attributes in pipe mode, i.e. when one uses:
perf record -o - | perf report -i -
When no perf.data files are used.
- Handle files generated via pipe mode with a version of perf and
then read also via pipe mode with a different version of perf,
where the event attr record may have changed, use the record size
field to properly support this version mismatch.
perf probe:
- Accessing global variables from uprobes isn't supported, make the
error message state that instead of stating that some minimal
kernel version is needed to have that feature. This seems just a
tool limitation, the kernel probably has all that is needed.
perf tests:
- Fix a reference count related leak in the dlfilter v0 API where the
result of a thread__find_symbol_fb() is not matched with an
addr_location__exit() to drop the reference counts of the resolved
components (machine, thread, map, symbol, etc). Add a dlfilter test
to make sure that doesn't regresses.
- Lots of fixes for the 'perf test' written in shell script related
to problems found with the shellcheck utility.
- Fixes for 'perf test' shell scripts testing features enabled when
perf is built with BUILD_BPF_SKEL=1, such as 'perf stat' bpf
counters.
- Add perf record sample filtering test, things like the following
example, that gets implemented as a BPF filter attached to the
event:
# perf record -e task-clock -c 10000 --filter 'ip < 0xffffffff00000000'
- Improve the way the task_analyzer test checks if libtraceevent is
linked, using 'perf version --build-options' instead of the more
expensinve 'perf record -e "sched:sched_switch"'.
- Add support for riscv in the mmap-basic test. (This went as well
via the RiscV tree, same contents).
libperf:
- Implement riscv mmap support (This went as well via the RiscV tree,
same contents).
perf script:
- New tool that converts perf.data files to the firefox profiler
format so that one can use the visualizer at
https://profiler.firefox.com/. Done by Anup Sharma as part of this
year's Google Summer of Code.
One can generate the output and upload it to the web interface but
Anup also automated everything:
perf script gecko -F 99 -a sleep 60
- Support syscall name parsing on arm64.
- Print "cgroup" field on the same line as "comm".
perf bench:
- Add new 'uprobe' benchmark to measure the overhead of uprobes
with/without BPF programs attached to it.
- breakpoints are not available on power9, skip that test.
perf stat:
- Add #num_cpus_online literal to be used in 'perf stat' metrics, and
add this extra 'perf test' check that exemplifies its purpose:
TEST_ASSERT_VAL("#num_cpus_online",
expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0);
TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online);
Miscellaneous:
- Improve tool startup time by lazily reading PMU, JSON, sysfs data.
- Improve error reporting in the parsing of events, passing YYLTYPE
to error routines, so that the output can show were the parsing
error was found.
- Add 'perf test' entries to check the parsing of events
improvements.
- Fix various leak for things detected by -fsanitize=address, mostly
things that would be freed at tool exit, including:
- Free evsel->filter on the destructor.
- Allow tools to register a thread->priv destructor and use it in
'perf trace'.
- Free evsel->priv in 'perf trace'.
- Free string returned by synthesize_perf_probe_point() when the
caller fails to do all it needs.
- Adjust various compiler options to not consider errors some
warnings when building with broken headers found in things like
python, flex, bison, as we otherwise build with -Werror. Some for
gcc, some for clang, some for some specific version of those, some
for some specific version of flex or bison, or some specific
combination of these components, bah.
- Allow customization of clang options for BPF target, this helps
building on gentoo where there are other oddities where BPF targets
gets passed some compiler options intended for the native build, so
building with WERROR=0 helps while these oddities are fixed.
- Dont pass ERR_PTR() values to perf_session__delete() in 'perf top'
and 'perf lock', fixing some segfaults when handling some odd
failures.
- Add LTO build option.
- Fix format of unordered lists in the perf docs
(tools/perf/Documentation)
- Overhaul the bison files, using constructs such as YYNOMEM.
- Remove unused tokens from the bison .y files.
- Add more comments to various structs.
- A few LoongArch enablement patches.
Vendor events (JSON):
- Add JSON metrics for Yitian 710 DDR (aarch64). Things like:
EventName, BriefDescription
visible_window_limit_reached_rd, "At least one entry in read queue reaches the visible window limit.",
visible_window_limit_reached_wr, "At least one entry in write queue reaches the visible window limit.",
op_is_dqsosc_mpc , "A DQS Oscillator MPC command to DRAM.",
op_is_dqsosc_mrr , "A DQS Oscillator MRR command to DRAM.",
op_is_tcr_mrr , "A Temperature Compensated Refresh(TCR) MRR command to DRAM.",
- Add AmpereOne metrics (aarch64).
- Update N2 and V2 metrics (aarch64) and events using Arm telemetry
repo.
- Update scale units and descriptions of common topdown metrics on
aarch64. Things like:
- "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)",
- "BriefDescription": "Frontend bound L1 topdown metric",
+ "MetricExpr": "100 * (stall_slot_frontend / (#slots * cpu_cycles))",
+ "BriefDescription": "This metric is the percentage of total slots that were stalled due to resource constraints in the frontend of the processor.",
- Update events for intel: meteorlake to 1.04, sapphirerapids to
1.15, Icelake+ metric constraints.
- Update files for the power10 platform"
* tag 'perf-tools-for-v6.6-1-2023-09-05' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (217 commits)
perf parse-events: Fix driver config term
perf parse-events: Fixes relating to no_value terms
perf parse-events: Fix propagation of term's no_value when cloning
perf parse-events: Name the two term enums
perf list: Don't print Unit for "default_core"
perf vendor events intel: Fix modifier in tma_info_system_mem_parallel_reads for skylake
perf dlfilter: Avoid leak in v0 API test use of resolve_address()
perf metric: Add #num_cpus_online literal
perf pmu: Remove str from perf_pmu_alias
perf parse-events: Make common term list to strbuf helper
perf parse-events: Minor help message improvements
perf pmu: Avoid uninitialized use of alias->str
perf jevents: Use "default_core" for events with no Unit
perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test
perf test shell stat_bpf_counters: Fix test on Intel
perf test shell record_bpf_filter: Skip 6.2 kernel
libperf: Get rid of attr.id field
perf tools: Convert to perf_record_header_attr_id()
libperf: Add perf_record_header_attr_id()
perf tools: Handle old data in PERF_RECORD_ATTR
...
|
||
|
Ian Rogers
|
45fc4628c1 |
perf parse-events: Fix driver config term
Inadvertently deleted in commit |
||
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Ian Rogers
|
9ea150a8d0 |
perf parse-events: Fixes relating to no_value terms
A term may have no value in which case it is assumed to have a value of 1. It doesn't just apply to alias/event terms so change the parse_events_term__to_strbuf assert. Commit |
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Linus Torvalds
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e0152e7481 |
RISC-V Patches for the 6.6 Merge Window, Part 1
* Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions. * Support for userspace access to the performance counters. * Support for more instructions in kprobes. * Crash kernels can be allocated above 4GiB. * Support for KCFI. * Support for ELFs in !MMU configurations. * ARCH_KMALLOC_MINALIGN has been reduced to 8. * mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel). * Also various fixes and cleanups. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmTx96kTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiVjRD/9DYVLlkQ/OEDJjPaEcYCP49xgIVUUU lhs3XbSs2VNHBaiG114f6Q0AaT/uNi+uqSej3CeTmEot2kZkBk/f2yu+UNIriPZ9 GQiZsdyXhu921C+5VFtiI47KDWOVZ+Jpy3M1ll61IWt3yPSQHr1xOP0AOiyHHqe3 cmqpNnzjajlfVDoXPc2mGGzUJt/7ar4thcwnMNi98raXR5Qh7SP6rrHjoQhE1oFk LMP3CHqEAcHE2tE4CxZVpc6HOQ5m0LpQIOK7ypufGMyoIYESm5dt/JOT4MlhTtDw 6JzyVKtiM7lartUnUaW3ZoX4trQYT5gbXxWrJ2gCnUGy3VulikoXr1Rpz0qfdeOR XN8OLkVAqHfTGFI7oKk24f9Adw96R5NPZcdCay90h4J/kMfCiC7ZyUUI1XIa5iy1 np5pZCkf8HNcdywML7qcFd5n2O0wchyFnRLFZo6kJP9Ls5cEi6kBx/1jSdTcNgx/ fUKXyoEcriGoQiiwn29+4RZnU69gJV3zqQNLPpuwDQ5F/Q1zHTlrr+dqzezKkzcO dRTV2d2Q4A5vIDXPptzNNLlRQdrc8qxPJ1lxQVkPIU4/mtqczmZBwlyY2u9zwPyS sehJgJZnoAf+jm71NgQAKLck4MUBsMnMogOWunhXkVRCoZlbbkUWX4ECZYwPKsVk W7zVPmLvSM0l5g== =/tXb -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions - Support for userspace access to the performance counters - Support for more instructions in kprobes - Crash kernels can be allocated above 4GiB - Support for KCFI - Support for ELFs in !MMU configurations - ARCH_KMALLOC_MINALIGN has been reduced to 8 - mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel) - Also various fixes and cleanups * tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits) lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V riscv: support PREEMPT_DYNAMIC with static keys riscv: Move create_tmp_mapping() to init sections riscv: Mark KASAN tmp* page tables variables as static riscv: mm: use bitmap_zero() API riscv: enable DEBUG_FORCE_FUNCTION_ALIGN_64B riscv: remove redundant mv instructions RISC-V: mm: Document mmap changes RISC-V: mm: Update pgtable comment documentation RISC-V: mm: Add tests for RISC-V mm RISC-V: mm: Restrict address space for sv39,sv48,sv57 riscv: enable DMA_BOUNCE_UNALIGNED_KMALLOC for !dma_coherent riscv: allow kmalloc() caches aligned to the smallest value riscv: support the elf-fdpic binfmt loader binfmt_elf_fdpic: support 64-bit systems riscv: Allow CONFIG_CFI_CLANG to be selected riscv/purgatory: Disable CFI riscv: Add CFI error handling riscv: Add ftrace_stub_graph riscv: Add types to indirectly called assembly functions ... |
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Ian Rogers
|
64199ae4b8 |
perf parse-events: Fix propagation of term's no_value when cloning
The no_value field in 'struct parse_events_term' indicates that the val variable isn't used, the case for an event name. Cloning wasn't propagating this, making cloned event name terms appearing to have a constant assinged to them. Working around the bug would check for a value of 1 assigned to value, but then this meant a user value of 1 couldn't be differentiated causing the value to be lost in debug printing and perf list. The change fixes the cloning and updates the "val.num ==/!= 1" tests to use no_value instead. To better check the no_value is set appropriately parameter comments are added for constant values. This found that no_value wasn't set correctly in parse_events_multi_pmu_add, which matters now that no_value is used to indicate an event name. Fixes: |
||
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Ian Rogers
|
58d3a4cea4 |
perf parse-events: Name the two term enums
Name the enums used by 'struct parse_events_term' to parse_events__term_val_type and parse_events__term_type. This allows greater compile time error checking. Fix -Wswitch related issues by explicitly listing all enum values prior to default. Add config_term_name to safely look up a parse_events__term_type name, bounds checking the array access first. Add documentation to 'struct parse_events_terms' and reorder to save space. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230831071421.2201358-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
|
478c3f5dcd |
perf list: Don't print Unit for "default_core"
"default_core" was added as a way to demark JSON events whose PMU should
be whatever the default core PMU is, previously this had been assumed to
be "cpu" but that fails on s390 and ARM.
'perf list' displays the PMU in the event description to save storing it
in JSON, but was still comparing against "cpu" and not "default_core",
so update this.
Fixes:
|
||
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Ian Rogers
|
bdc6012991 |
perf vendor events intel: Fix modifier in tma_info_system_mem_parallel_reads for skylake
The metric is using the wrong format encoding. This fix is in the converter script PR: https://github.com/intel/perfmon/pull/101 Committer testing: Tested on a Lenovo t480s, before 'perf test 100' was failing with: # perf test 100 100: perf all metrics test : FAILED! With 'perf test -vv 100' we can see: <SNIP> Testing MemoryBW Not grouping metric tma_fb_full's events. Try disabling the NMI watchdog to comply NO_NMI_WATCHDOG metric constraint: echo 0 > /proc/sys/kernel/nmi_watchdog perf stat ... echo 1 > /proc/sys/kernel/nmi_watchdog event syntax error: '...DATA_READ/thresh=1,metric-id=UNC_ARB_TRK_OCCUPANCY.DATA_READ!3thresh!21!3/,UNC_ARB_TRK_OCCUPANCY.DATA_READ/metric-id=UNC_ARB_TRK_OCCUPANCY.DATA_READ/}:W,duration_time' \___ Bad event or PMU Unable to find PMU or event on a PMU of 'UNC_ARB_TRK_OCCUPANCY.DATA_READ' <SNIP> With the patch this problem is gone. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Caleb Biggers <caleb.biggers@intel.com> Cc: Edward Baker <edward.baker@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Perry Taylor <perry.taylor@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Samantha Alt <samantha.alt@intel.com> Cc: Weilin Wang <weilin.wang@intel.com> Link: https://lore.kernel.org/r/20230830175543.1911892-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Adrian Hunter
|
45210e1ada |
perf dlfilter: Avoid leak in v0 API test use of resolve_address()
The introduction of reference counting causes the v0 API perf_dlfilter_fns.resolve_address() to leak. v2 API introduced perf_dlfilter_fns.al_cleanup() to prevent that. For the v0 API, avoid the leak by exiting the addr_location immediately, since the documentation makes it clear that pointers obtained via perf_dlfilter_fns are not necessarily valid (dereferenceable) after 'filter_event' and 'filter_event_early' return. Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Closes: https://lore.kernel.org/oe-lkp/202308232146.94d82cb4-oliver.sang@intel.com Link: http://lore.kernel.org/lkml/20230830090539.68206-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
|
f0005f1732 |
perf metric: Add #num_cpus_online literal
Returns the number of CPUs online, unlike #num_cpus that returns the number present. Add a test of the property. This will be used in future Intel metrics. Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Perry Taylor <perry.taylor@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20230830073026.1829912-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
|
30f0b435bb |
perf pmu: Remove str from perf_pmu_alias
Currently the value is only used in perf list. Compute the value just when needed to avoid unnecessary overhead. Recycle the strbuf to avoid memory allocation overhead. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20230830070753.1821629-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
|
7a6e916447 |
perf parse-events: Make common term list to strbuf helper
A term list is turned into a string for debug output and for the str value in the alias. Add a helper to do this based on existing code, but then fix for situations like events being identified. Use strbuf to manage the dynamic memory allocation and remove the 256 byte limit. Use in various places the string of the term list is required. Before: $ sudo perf stat -vv -e inst_retired.any true Using CPUID GenuineIntel-6-8D-1 intel_pt default config: tsc,mtc,mtc_period=3,psb_period=3,pt,branch Attempting to add event pmu 'cpu' with 'inst_retired.any,' that may result in non-fatal errors After aliases, add event pmu 'cpu' with 'event,period,' that may result in non-fatal errors inst_retired.any -> cpu/inst_retired.any/ ... After: $ sudo perf stat -vv -e inst_retired.any true Using CPUID GenuineIntel-6-8D-1 intel_pt default config: tsc,mtc,mtc_period=3,psb_period=3,pt,branch Attempt to add: cpu/inst_retired.any/ ..after resolving event: cpu/event=0xc0,period=0x1e8483/ inst_retired.any -> cpu/event=0xc0,period=0x1e8483/ ... Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20230830070753.1821629-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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6beb6cfddf |
perf parse-events: Minor help message improvements
Be more specific and fix a typo. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20230830070753.1821629-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Ian Rogers
|
196e355877 |
perf pmu: Avoid uninitialized use of alias->str
alias is allocated with malloc allowing uninitialized memory to be
accessed.
The initialization of str was moved late after it could have been
updated by a JSON event, however, this create a potential for an
uninitialized use.
Fix this by assigning str to NULL early.
Testing on ARM (Raspberry Pi) showed a memory leak in the same code so
add a zfree.
Fixes:
|
||
|
Linus Torvalds
|
1687d8aca5 |
* Rework apic callbacks, getting rid of unnecessary ones and
coalescing lots of silly duplicates.
* Use static_calls() instead of indirect calls for apic->foo()
* Tons of cleanups an crap removal along the way
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Merge tag 'x86_apic_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Dave Hansen:
"This includes a very thorough rework of the 'struct apic' handlers.
Quite a variety of them popped up over the years, especially in the
32-bit days when odd apics were much more in vogue.
The end result speaks for itself, which is a removal of a ton of code
and static calls to replace indirect calls.
If there's any breakage here, it's likely to be around the 32-bit
museum pieces that get light to no testing these days.
Summary:
- Rework apic callbacks, getting rid of unnecessary ones and
coalescing lots of silly duplicates.
- Use static_calls() instead of indirect calls for apic->foo()
- Tons of cleanups an crap removal along the way"
* tag 'x86_apic_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
x86/apic: Turn on static calls
x86/apic: Provide static call infrastructure for APIC callbacks
x86/apic: Wrap IPI calls into helper functions
x86/apic: Mark all hotpath APIC callback wrappers __always_inline
x86/xen/apic: Mark apic __ro_after_init
x86/apic: Convert other overrides to apic_update_callback()
x86/apic: Replace acpi_wake_cpu_handler_update() and apic_set_eoi_cb()
x86/apic: Provide apic_update_callback()
x86/xen/apic: Use standard apic driver mechanism for Xen PV
x86/apic: Provide common init infrastructure
x86/apic: Wrap apic->native_eoi() into a helper
x86/apic: Nuke ack_APIC_irq()
x86/apic: Remove pointless arguments from [native_]eoi_write()
x86/apic/noop: Tidy up the code
x86/apic: Remove pointless NULL initializations
x86/apic: Sanitize APIC ID range validation
x86/apic: Prepare x2APIC for using apic::max_apic_id
x86/apic: Simplify X2APIC ID validation
x86/apic: Add max_apic_id member
x86/apic: Wrap APIC ID validation into an inline
...
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Ian Rogers
|
d2045f8715 |
perf jevents: Use "default_core" for events with no Unit
The JSON Unit field encodes the name of the PMU to match the events
to. When no name is given it has meant the "cpu" core PMU except for
tests.
On ARM, Intel hybrid and s390 the core PMU is named differently which
means that using "cpu" for this case causes the events not to get
matched to the PMU.
Introduce a new "default_core" string for this case and in the
pmu__name_match force all core PMUs to match this name.
Fixes:
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Namhyung Kim
|
a84260e314 |
perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test
It has system-wide test and cpu-list test but the cpu-list test fails
sometimes. It runs sleep command on CPU1 and measure both user.slice
and system.slice cgroups by default (on systemd-based systems).
But if the system was idle enough, sometime the system.slice gets no
count and it makes the test failing. Maybe that's because it only looks
at the CPU1, let's add CPU0 to increase the chance it finds some tasks.
Fixes:
|
||
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Namhyung Kim
|
68ca249c96 |
perf test shell stat_bpf_counters: Fix test on Intel
As of now, bpf counters (bperf) don't support event groups. But the
default perf stat includes topdown metrics if supported (on recent Intel
machines) which require groups. That makes perf stat exiting.
$ sudo perf stat --bpf-counter true
bpf managed perf events do not yet support groups.
Actually the test explicitly uses cycles event only, but it missed to
pass the option when it checks the availability of the command.
Fixes:
|
||
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Namhyung Kim
|
11f5710d96 |
perf test shell record_bpf_filter: Skip 6.2 kernel
The BPF sample filtering requires two kernel changes below:
* bpf_cast_to_kernel_ctx() kfunc (added in v6.2)
* setting perf_sample_data->sample_flags (finished in v6.3)
The perf tools can check bpf_cast_to_kernel_ctx() easily so it can
refuse BPF filters on those old kernels (v6.1 and earlier).
But checking sample_flags appears to be difficult so current code won't
work on v6.2 kernel. That's unfortunate but I don't know what's the
correct way to handle it.
For now, let's skip v6.2 kernels explicitly (if failed) in the test.
Fixes:
|
||
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Namhyung Kim
|
f174341d0d |
perf tools: Convert to perf_record_header_attr_id()
Instead of accessing the attr.id directly, use the perf_record_header_attr_id() helper to handle old versions. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230825152552.112913-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Namhyung Kim
|
9bf63282ea |
perf tools: Handle old data in PERF_RECORD_ATTR
The PERF_RECORD_ATTR is used for a pipe mode to describe an event with
attribute and IDs. The ID table comes after the attr and it calculate
size of the table using the total record size and the attr size.
n_ids = (total_record_size - end_of_the_attr_field) / sizeof(u64)
This is fine for most use cases, but sometimes it saves the pipe output
in a file and then process it later. And it becomes a problem if there
is a change in attr size between the record and report.
$ perf record -o- > perf-pipe.data # old version
$ perf report -i- < perf-pipe.data # new version
For example, if the attr size is 128 and it has 4 IDs, then it would
save them in 168 byte like below:
8 byte: perf event header { .type = PERF_RECORD_ATTR, .size = 168 },
128 byte: perf event attr { .size = 128, ... },
32 byte: event IDs [] = { 1234, 1235, 1236, 1237 },
But when report later, it thinks the attr size is 136 then it only read
the last 3 entries as ID.
8 byte: perf event header { .type = PERF_RECORD_ATTR, .size = 168 },
136 byte: perf event attr { .size = 136, ... },
24 byte: event IDs [] = { 1235, 1236, 1237 }, // 1234 is missing
So it should use the recorded version of the attr. The attr has the
size field already then it should honor the size when reading data.
Fixes:
|
||
|
Ian Rogers
|
cd4e1efbbc |
perf pmus: Skip duplicate PMUs and don't print list suffix by default
Add a PMUs scan that ignores duplicates. When there are multiple PMUs
that differ only by suffix, by default just list the first one and
skip all others. The scan routine checks that the PMU names match but
doesn't enforce that the numbers are consecutive as for some PMUs
there are gaps. If "-v" is passed to "perf list" then list all PMUs.
With the previous change duplicate PMUs are no longer printed but the
suffix of the first is printed. When duplicate PMUs are being skipped
avoid printing the suffix.
Before:
$ perf list
...
uncore_imc_free_running_0/data_read/ [Kernel PMU event]
uncore_imc_free_running_0/data_total/ [Kernel PMU event]
uncore_imc_free_running_0/data_write/ [Kernel PMU event]
uncore_imc_free_running_1/data_read/ [Kernel PMU event]
uncore_imc_free_running_1/data_total/ [Kernel PMU event]
uncore_imc_free_running_1/data_write/ [Kernel PMU event]
After:
$ perf list
...
uncore_imc_free_running/data_read/ [Kernel PMU event]
uncore_imc_free_running/data_total/ [Kernel PMU event]
uncore_imc_free_running/data_write/ [Kernel PMU event]
...
$ perf list -v
uncore_imc_free_running_0/data_read/ [Kernel PMU event]
uncore_imc_free_running_0/data_total/ [Kernel PMU event]
uncore_imc_free_running_0/data_write/ [Kernel PMU event]
uncore_imc_free_running_1/data_read/ [Kernel PMU event]
uncore_imc_free_running_1/data_total/ [Kernel PMU event]
uncore_imc_free_running_1/data_write/ [Kernel PMU event]
...
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Link: https://lore.kernel.org/r/20230825135237.921058-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Ian Rogers
|
8d9f5146f5 |
perf pmus: Sort pmus by name then suffix
Sort PMUs by name. If two PMUs have the same name but differ by suffix, sort the suffixes numerically. For example, "breakpoint" comes before "cpu", "uncore_imc_free_running_0" comes before "uncore_imc_free_running_1". Suffixes need to be treated specially as otherwise they will be ordered like 0, 1, 10, 11, .., 2, 20, 21, .., etc. Only PMUs starting 'uncore_' are considered to have a potential suffix. Sorting of PMUs is done so that later patches can skip duplicate uncore PMUs that differ only by there suffix. Committer notes: Used the more compact, intention revealing strstarts() function we got from the kernel sources: - if (strncmp(str, "uncore_", 7)) + if (!strstarts(str, "uncore_")) Also in pmus_cmp() the lhs_num and rhs_num variables may end up not being set for non "uncore_" prefixed PMUs in pmu_name_len_no_suffix(), or at least gcc 7.5 in some distros (opensuse 15.5, to be EOLed in Dec/2024) thins so, so initialize both to zero. Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Link: https://lore.kernel.org/r/20230825135237.921058-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
Yanteng Si
|
f703073eff |
perf beauty mmap_flags: Use "test -f" instead of "[-f FILE]"
"[" is part of the shell builtin test (and a synonym for it), not a link to the external command /usr/bin/test. Using the "test" is simpler because it avoids a lot of "[]". Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Acked-by: Huacai Chen <chenhuacai@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: loongarch@lists.linux.dev Cc: loongson-kernel@lists.loongnix.cn Link: https://lore.kernel.org/r/c50bc0a92dce0ff0fa6504c1a52fb53e2ac007bf.1692962043.git.siyanteng@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Yanteng Si
|
49cf0bf637 |
perf beauty mmap_flags: Fix script for archs that use the generic mman.h
To address this error: grep: /root/linux-next/tools/arch/xxxxx/include/uapi/asm//mman.h: No such file or directory Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Acked-by: Huacai Chen <chenhuacai@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: loongarch@lists.linux.dev Cc: loongson-kernel@lists.loongnix.cn Link: https://lore.kernel.org/r/42e8e3565d6035302907426c1e65483b2a4007f5.1692962043.git.siyanteng@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Yanteng Si
|
c56f286f24 |
perf tools: Allow to use cpuinfo on LoongArch
Define these macros so that the CPU name can be displayed when running
'perf report' and 'perf timechart'.
Committer notes:
No need to have:
if (strcasestr(buf, "Model Name")) {
strlcpy(cpu_m, &buf[13], 255);
break;
} else if (strcasestr(buf, "model name")) {
strlcpy(cpu_m, &buf[13], 255);
break;
}
As the point of strcasestr() is to be case insensitive to both the
haystack and the needle, so simplify the above to just:
if (strcasestr(buf, "model name")) {
strlcpy(cpu_m, &buf[13], 255);
break;
}
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: loongarch@lists.linux.dev
Cc: loongson-kernel@lists.loongnix.cn
Link: https://lore.kernel.org/r/db968a186a10e4629fe10c26a1210f7126ad41ec.1692962043.git.siyanteng@loongson.cn
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
Linus Torvalds
|
b03a434214 |
seccomp updates for v6.6-rc1
- Provide USER_NOTIFY flag for synchronous mode (Andrei Vagin, Peter Oskolkov). This touches the scheduler and perf but has been Acked by Peter Zijlstra. - Fix regression in syscall skipping and restart tracing on arm32. This touches arch/arm/ but has been Acked by Arnd Bergmann. -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmTs418WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJohpD/4tEfRdnb/KDgwQ7uvqBonUJXcx wqw17LZCGTpBV3/Tp3+aEseD1NezOxiMJL88VyUHSy7nfDJShbL6QtyoenwEOeXJ HmBUfcIH3cqRutHEJ3drYBzBetpeeK2G+gTYVj+JoEfPWyPf+Egj+1JE2n1xLi92 WC1miBAyBZ59kN+D1hcDzJu24CkAwbcUYlEzGejN5lBOwxYV3/fjARBVRvefOO5m jljSCIVJOFgCiybKhJ7Zw1+lkFc3cIlcOgr4/ZegSc8PxFVebnuImTHHp/gvoo6F 7d1xe5Hk+PSfNvVq41MAeRB2vK2tY5efwjXRarThUaydPTO43KiQm0dzP0EYWK9a LcOg8zAXZnpvuWU5O2SqUKADcxe2TjS1WuQ/Q4ixxgKz2kJKDwrNU8Frf327eLSR acfZgMMiUfEXyXDV9B3LzNAtwdvwyxYrzEzxgKywhThIhZmQDat0rI2IaTV5QIc5 pkxiFEe0TPwpzyUVO9dSzE+ughTmNQOKk5uAM9e2NwRwVdhEmlZAxo0kStJ1NoaA yDjYIKfaNBElchL4v2931KJFJseI+uRaWdW10JEV+1M69+gEAEs6wbmAxtcYS776 xWsYp3slXzlmeVyvQp/ah8p0y55r+qTbcnhkvIdiwLYei4Bh3KOoJUlVmW0V5dKq b+7qspIvBA0kKRAqPw== =DI8R -----END PGP SIGNATURE----- Merge tag 'seccomp-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: - Provide USER_NOTIFY flag for synchronous mode (Andrei Vagin, Peter Oskolkov). This touches the scheduler and perf but has been Acked by Peter Zijlstra. - Fix regression in syscall skipping and restart tracing on arm32. This touches arch/arm/ but has been Acked by Arnd Bergmann. * tag 'seccomp-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: seccomp: Add missing kerndoc notations ARM: ptrace: Restore syscall skipping for tracers ARM: ptrace: Restore syscall restart tracing selftests/seccomp: Handle arm32 corner cases better perf/benchmark: add a new benchmark for seccom_unotify selftest/seccomp: add a new test for the sync mode of seccomp_user_notify seccomp: add the synchronous mode for seccomp_unotify sched: add a few helpers to wake up tasks on the current cpu sched: add WF_CURRENT_CPU and externise ttwu seccomp: don't use semaphore and wait_queue together |
||
Kajol Jain
|
0f2418fddb |
perf lock contention: Fix typo in max-stack option description
Fix typo in max-stack option description by changing lopck contention to lock contention. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Disha Goel <disgoel@linux.ibm.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230825104700.440809-1-kjain@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Ian Rogers
|
520da457f9 |
perf tui slang: Tidy casts
Casts were necessary for older versions of libslang, however, these are now 15 years old and so we no longer need to care about supporting them. Tidy the casts and remove unnecessary logic. Move the ENABLE_SLFUTURE_CONST to the libslang.h common include file, and also enable ENABLE_SLFUTURE_VOID. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wei Li <liwei391@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230825024002.801955-7-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
|
Ian Rogers
|
7512e96957 |
perf build-id: Simplify build_id_cache__cachedir()
Initialize realname to NULL, rather than name. This avoids a cast and as realpath is either NULL or an allocated string, free can be called unconditionally. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wei Li <liwei391@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230825024002.801955-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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b7823045ec |
perf pmu: Make id const and add missing free
The struct pmu id is initialized from pmu_id that is read into allocated memory from a file, as such it needs free-ing in pmu__delete(). Make the id value const so that we can remove casts in tests. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wei Li <liwei391@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230825024002.801955-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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970ef02e98 |
perf parse-events: Make term's config const
This avoids casts in tests. Use zfree in a few places to avoid warnings about a freeing a const pointer. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wei Li <liwei391@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230825024002.801955-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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c091ee9089 |
perf pmu: Remove logic for PMU name being NULL
The PMU name could be NULL in the case of the fake_pmu. Initialize the name for the fake_pmu to "fake" so that all other logic can assume it is initialized. Add a const to the type of name so that a literal can be used to avoid additional initialization code. Propagate the cost through related routines and remove now unnecessary "(char *)" casts. Doing this located a bug in builtin-list for the pmu_glob that was missing a strdup. Signed-off-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20230825024002.801955-3-irogers@google.com Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Wei Li <liwei391@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Ming Wang <wangming01@loongson.cn> Cc: John Garry <john.g.garry@oracle.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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9897009eec |
perf header: Fix missing PMU caps
PMU caps are written as HEADER_PMU_CAPS or for the special case of the
PMU "cpu" as HEADER_CPU_PMU_CAPS. As the PMU "cpu" is special, and not
any "core" PMU, the logic had become broken and core PMUs not called
"cpu" were not having their caps written.
This affects ARM and s390 non-hybrid PMUs.
Simplify the PMU caps writing logic to scan one fewer time and to be
more explicit in its behavior.
Fixes:
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Ian Rogers
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eeb6b12992 |
perf jevents: Don't append Unit to desc
Unit with the PMU name is appended to desc in jevents.py, but on hybrid platforms it causes the desc to differ from the regular non-hybrid system with a PMU of 'cpu'. Having differing descs means the events don't deduplicate. To make the perf list output not differ, append the Unit on again in the perf list printing code. On x86 reduces the binary size by 409,600 bytes or about 4%. Update pmu-events test expectations to match the differently generated pmu-events.c code. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230824183212.374787-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Anup Sharma
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f208b2c6f9 |
perf scripts python gecko: Launch the profiler UI on the default browser with the appropriate URL
All required libraries have been imported and make sure that none of them are external dependencies. To achieve this, created a virt env and verified. Modified usage information and added combined command. Modified the main() function to read the --save-only command-line option and set the output_file variable accordingly. Modified the trace_end() function to check for the output_file variable. If it is set, the profiler data is saved to a local file in Gecko Profile format, or the profiler.firefox.com is opened on the default browser. Included trace_begin() to initialize the Firefox Profiler and launch the default browser to display the profiler.firefox.com. Added a new function launchFirefox() to start a local server and launch the profiler UI on the default browser with the appropriate URL. Created the "CORSRequestHandler" class to enable Cross-Origin Resource Sharing. Summary: This integration now includes a exiting feature to conveniently host the Gecko Profile data on a local server and open it directly in the default web browser. This means that users can now effortlessly visualize and analyze the profiler results with just a single click. The addition of the --save-only command-line option allows users to save the profiler output to a local file in Gecko Profile format, but the real highlight lies in the capability to seamlessly launch a local server, making the data accessible to Firefox Profiler via a web browser. In addition, it's important to highlight that all data are hosted locally, eliminating any concerns about data privacy rules and regulations. Signed-off-by: Anup Sharma <anupnewsmail@gmail.com> Tested-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/ZNOS0vo58DnVLpD8@yoga Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Anup Sharma
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43803cb16f |
perf scripts python: Add support for input args in gecko script
Refines the argument handling mechanism in the "gecko-report" script to enable better compatibility and improved user experience. The script now differentiates between scenarios where arguments are provided for record and report cases where gecko.py arguments are passed. Signed-off-by: Anup Sharma <anupnewsmail@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/ZNf7W+EIrrCSHZN0@yoga Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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f85d120c46 |
perf jevents: Sort strings in the big C string to reduce faults
Sort the strings within the big C string based on whether they were for a metric and then by when they were added. This helps group related strings and reduce minor faults by approximately 10 in 1740, about 0.57%. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230824041330.266337-18-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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8d4b6d37ea |
perf pmu: Lazily load sysfs aliases
Don't load sysfs aliases for a PMU when the PMU is first created, defer until an alias needs to be found. For the pmu-scan benchmark, average core PMU scanning is reduced by 30.8%, and average PMU scanning by 12.6%. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230824041330.266337-17-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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7b723dbb96 |
perf pmu: Be lazy about loading event info files from sysfs
Event info is only needed when an event is parsed or when merging data from an JSON and sysfs event. Be lazy in its loading to reduce file accesses. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230824041330.266337-16-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Ian Rogers
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88ed91848d |
perf pmu: Scan type early to fail an invalid PMU quickly
Scan sysfs PMU's type early so that format and aliases aren't attempted to be loaded if the PMU name is invalid. This is the case for event_pmu tokens in parse-events.y where a wildcard name is first assumed to be a PMU name. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230824041330.266337-15-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |