- 08 Mar, 2016 13 commits
-
-
Namhyung Kim authored
Now hpp formats are linked using perf_hpp_list_node when hierarchy is enabled. Use this info to print entries with multiple sort keys in a single hierarchy properly. For example, the below example shows using 4 sort keys with 2 levels. $ perf report --hierarchy -s '{prev_pid,prev_comm},{next_pid,next_comm}' \ --percent-limit 1 -i perf.data.sched ... # Overhead prev_pid+prev_comm / next_pid+next_comm # ........... ....................................... # 22.36% 0 swapper/0 9.48% 17773 transmission-gt 5.25% 109 kworker/0:1H 1.53% 6524 Xephyr 21.39% 17773 transmission-gt 9.52% 0 swapper/0 9.04% 0 swapper/2 1.78% 0 swapper/3 Tested-by:Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
-
Namhyung Kim authored
When multiple sort keys are used in a single hierarchy, it should indent using number of hierarchy levels instead of number of sort keys. Signed-off-by:
-
Namhyung Kim authored
This implements having multiple sort keys in a single hierarchy level. Originally only single sort key is supported for each level, but now using the group syntax with '{ }', it can set more than one sort key in one level. Note that now it needs to quote in order to prevent shell interpretation. For example: $ perf report --hierarchy -s '{comm,dso},sym' ... # Overhead Command / Shared Object / Symbol # .............. .......................................... # 48.67% swapper [kernel.vmlinux] 34.42% [k] intel_idle 1.30% [k] __tick_nohz_idle_enter 1.03% [k] cpuidle_reflect 8.87% firefox libpthread-2.22.so 6.60% [.] __GI___libc_recvmsg 1.18% [.] pthread_cond_signal@@GLIBC_2.3.2 1.09% [.] 0x000000000000ff4b 6.11% Xorg libc-2.22.so 5.27% [.] __memcpy_sse2_unaligned In the above example, the command name and the shared object name are shown on the same line but the symbol name is on the different line. Since the first two are grouped by '{}', they are in the same level. Suggested-and-Tested=by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: -
Namhyung Kim authored
Now each hists has its own hpp lists in hierarchy. So instead of having a pointer to a single perf_hpp_fmt in a hist entry, make it point the hpp_list for its level. This will be used to support multiple sort keys in a single hierarchy level. Signed-off-by:
-
Namhyung Kim authored
The perf_hpp__setup_hists_formats() is to build hists-specific output formats (and sort keys). Currently it's only used in order to build the output format in a hierarchy with same sort keys, but it could be used with different sort keys in non-hierarchy mode later. Signed-off-by:
-
Borislav Petkov authored
I'm surprised this remained undocumented since at least 2011. And it is actually a very useful switch, as Steve and I came to realize recently. Add the text from 2cba3ffb ("perf stat: Add -d -d and -d -d -d options to show more CPU events") which added the incrementing aspect to -d. Tested-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
-
Namhyung Kim authored
The level field is to distinguish levels in the hierarchy mode. Currently each column (perf_hpp_fmt) has a different level. Signed-off-by:
-
Adrian Hunter authored
Commit b9511cd7 ("perf/x86: Fix time_shift in perf_event_mmap_page") altered the time conversion algorithms documented in the perf_event.h header file, to use 64-bit shifts. That was done to make the code more future-proof (i.e. some time in the future a 32-bit shift could be allowed). Reflect those changes in perf tools. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
-
Adrian Hunter authored
Move clockid validation into jit_process() so it can later be made conditional. Signed-off-by:
-
Adrian Hunter authored
In preparation for moving clockid validation into jit_process(). Previously a return value of zero meant the processing had been done and non-zero meant either the processing was not done (i.e. not the jitdump file mmap event) or an error occurred. Change it so that zero means the processing was not done, one means the processing was done and successful, and negative values are an error. Signed-off-by:
-
Adrian Hunter authored
Some of the stubs are identical so just have one function for them. Signed-off-by:
-
Adrian Hunter authored
Currently, when injecting build ids, if there is AUX data then 'perf inject' hits all DSOs because it is not known which DSOs the trace data would hit. That needs to be done for JIT injection also, and in fact there is no reason to distinguish what kind of injection is being done. That is, any time there is AUX data and the HEADER_BUID_ID feature flag is set, and the AUX data is not being processed, then hit all DSOs. This patch does that. Signed-off-by:
-
Colin Ian King authored
The return type is not defined, so it defaults to int, however, the function is not returning anything, so this is clearly not correct. Make it a void function. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457008214-14393-1-git-send-email-colin.king@canonical.comSigned-off-by:
-
- 04 Mar, 2016 1 commit
-
-
Ingo Molnar authored
Merge tag 'perf-core-for-mingo-20160303' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes: User visible changes: - Check existence of frontend/backed stalled cycles in 'perf stat' (Andi Kleen) - Implement CSV metrics output in 'perf stat' (Andi Kleen) - Support metrics in 'perf stat' --per-core/socket mode (Andi Kleen) - Avoid installing .o files from tools/lib/ into the python extension (Jiri Olsa) - Rename the tracepoint '/format' field that carries the syscall ID from 'nr', that is also the name of some syscalls arguments, to "__syscall_nr", to avoid having multiple fields with the same name, that was breaking the python script skeleton generator from perf.data files (Taeung Song) - Support converting data from bpf events in 'perf data' (Wang Nan) - Fix segfault in 'perf test' hists related entries (Arnaldo Carvalho de Melo) - Fix output of %llu for 64 bit values read on 32 bit machines in libtraceevent (Steven Rostedt) - Fix time stamp rounding issue in libtraceevent (Chaos.Chen) Infrastructure changes: - Fix setlocale() breakage in the pmu parsing code (Jiri Olsa) - Split libtraceevent's pevent_print_event() (Steven Rostedt) - Librarize some 'perf record' bits to allow handling multiple perf.data files per session (Wang Nan) - Ensure return non-zero rc when mmap fails in 'perf record' (Wang Nan) - Fix double free on 'command_line' in a error path in 'perf script' (Colin Ian King) - Initialize struct sigaction 'sa_flags' field in a 'perf test' entry (Colin Ian King) - Fix various build warnings in turbostat, detected with gcc6 (Colin Ian King) - Use .s extension for preprocessed assembler code (Masahiro Yamada) Signed-off-by:
-
- 03 Mar, 2016 20 commits
-
-
Andi Kleen authored
Add an extra check for frontend stalled in the metrics. This avoids an extra column for the --metric-only case when the CPU does not support frontend stalled. v2: Add separate init function Signed-off-by:
Andi Kleen <ak@linux.intel.com> Acked-by:
-
Colin Ian King authored
When building with gcc 6 we're getting various build warnings that just require some trivial function declaration and call fixes: turbostat.c: In function ‘dump_cstate_pstate_config_info’: turbostat.c:1973:1: warning: type of ‘family’ defaults to ‘int’ dump_cstate_pstate_config_info(family, model) turbostat.c:1973:1: warning: type of ‘model’ defaults to ‘int’ turbostat.c: In function ‘get_tdp’: turbostat.c:2145:8: warning: type of ‘model’ defaults to ‘int’ double get_tdp(model) turbostat.c: In function ‘perf_limit_reasons_probe’: turbostat.c:2259:6: warning: type of ‘family’ defaults to ‘int’ void perf_limit_reasons_probe(family, model) turbostat.c:2259:6: warning: type of ‘model’ defaults to ‘int’ Signed-off-by:
-
Colin Ian King authored
The sa_flags field is not being initialized, so a garbage value is being passed to sigaction. Initialize it to zero. Signed-off-by:
-
Arnaldo Carvalho de Melo authored
That got broken by d3a72fd8 ("perf report: Fix indentation of dynamic entries in hierarchy"), by using the evlist in setup_sorting() without checking if it is NULL, as done in some 'perf test' entries: $ find tools/ -name "*.c" | xargs grep 'setup_sorting(NULL);' tools/perf/tests/hists_output.c: setup_sorting(NULL); tools/perf/tests/hists_output.c: setup_sorting(NULL); tools/perf/tests/hists_output.c: setup_sorting(NULL); tools/perf/tests/hists_output.c: setup_sorting(NULL); tools/perf/tests/hists_output.c: setup_sorting(NULL); tools/perf/tests/hists_cumulate.c: setup_sorting(NULL); tools/perf/tests/hists_cumulate.c: setup_sorting(NULL); tools/perf/tests/hists_cumulate.c: setup_sorting(NULL); tools/perf/tests/hists_cumulate.c: setup_sorting(NULL); $ Fix it. Before: [root@jouet ~]# perf test <SNIP> 15: Test matching and linking multiple hists : FAILED! 16: Try 'import perf' in python, checking link problems : Ok 17: Test breakpoint overflow signal handler : Ok 18: Test breakpoint overflow sampling : Ok 19: Test number of exit event of a simple workload : Ok 20: Test software clock events have valid period values : Ok 21: Test object code reading : Ok 22: Test sample parsing : Ok 23: Test using a dummy software event to keep tracking : Ok 24: Test parsing with no sample_id_all bit set : Ok 25: Test filtering hist entries : FAILED! 26: Test mmap thread lookup : Ok 27: Test thread mg sharing : Ok 28: Test output sorting of hist entries : FAILED! 29: Test cumulation of child hist entries : FAILED! <SNIP> After the patch the above failed tests complete successfully. Acked-by:
-
Steven Rostedt (Red Hat) authored
When a long value is read on 32 bit machines for 64 bit output, the parsing needs to change "%lu" into "%llu", as the value is read natively. Unfortunately, if "%llu" is already there, the code will add another "l" to it and fail to parse it properly. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20160209204237.337024613@goodmis.orgSigned-off-by:
-
Steven Rostedt (Red Hat) authored
Had a bug where on error of parsing __print_array() where the fields are freed after they were allocated, but since they were not set to NULL, the freeing of the arg also tried to free the already freed fields causing a double free. Fix process_hex() while at it. Signed-off-by:
-
Chaos.Chen authored
When rounding to microseconds, if the timestamp subsecond is between .999999500 and .999999999, it is rounded to .1000000, when it should instead increment the second counter due to the overflow. For example, if the timestamp is 1234.999999501 instead of seeing: 1235.000000 we see: 1234.1000000 Signed-off-by:
Chaos.Chen <rainboy1215@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20160209204236.824426460@goodmis.org [ fixed incrementing "secs" instead of decrementing it ] Signed-off-by:
-
Colin Ian King authored
The 'command_line' variable is free'd twice if db_export__branch_types() fails. To avoid this, defer the free'ing of 'command_line' to after this call so that the error return path will just free 'command_line' once. Signed-off-by:
-
Masahiro Yamada authored
The "man gcc" says .i extension represents the file is C source code that should not be preprocessed. Here, .s should be used. For clarification, .c ---(preprocess)---> .i .S ---(preprocess)---> .s Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
-
Andi Kleen authored
Enable metrics printing in --per-core / --per-socket mode. We need to save the shadow metrics in a unique place. Always use the first CPU in the aggregation. Then use the same CPU to retrieve the shadow value later. Example output: % perf stat --per-core -a ./BC1s Performance counter stats for 'system wide': S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%) S0-C0 2 49 context-switches # 0.017 K/sec (100.00%) S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%) S0-C0 2 467 page-faults # 0.157 K/sec S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%) S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%) S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%) S0-C0 2 81,180,867 branch-misses # 4.26% of all branches S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%) S0-C1 2 62 context-switches # 0.021 K/sec (100.00%) S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%) S0-C1 2 281 page-faults # 0.095 K/sec S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%) S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%) S0-C1 2 947,121 branches # 0.319 M/sec (100.00%) S0-C1 2 37,322 branch-misses # 3.94% of all branches 1.480409747 seconds time elapsed v2: Rebase to older patches v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri) Signed-off-by: -
Andi Kleen authored
Now support CSV output for metrics. With the new output callbacks this is relatively straight forward by creating new callbacks. This allows to easily plot metrics from CSV files. The new line callback needs to know the number of fields to skip them correctly Example output before: % perf stat -x, true 0.200687,,task-clock,200687,100.00 0,,context-switches,200687,100.00 0,,cpu-migrations,200687,100.00 40,,page-faults,200687,100.00 730871,,cycles,203601,100.00 551056,,stalled-cycles-frontend,203601,100.00 <not supported>,,stalled-cycles-backend,0,100.00 385523,,instructions,203601,100.00 78028,,branches,203601,100.00 3946,,branch-misses,203601,100.00 After: % perf stat -x, true .502457,,task-clock,502457,100.00,0.485,CPUs utilized 0,,context-switches,502457,100.00,0.000,K/sec 0,,cpu-migrations,502457,100.00,0.000,K/sec 45,,page-faults,502457,100.00,0.090,M/sec 644692,,cycles,509102,100.00,1.283,GHz 423470,,stalled-cycles-frontend,509102,100.00,65.69,frontend cycles idle <not supported>,,stalled-cycles-backend,0,100.00,,,, 492701,,instructions,509102,100.00,0.76,insn per cycle ,,,,,0.86,stalled cycles per insn 97767,,branches,509102,100.00,194.578,M/sec 4788,,branch-misses,509102,100.00,4.90,of all branches or easier readable $ perf stat -x, -o x.csv true $ column -s, -t x.csv 0.490635 task-clock 490635 100.00 0.489 CPUs utilized 0 context-switches 490635 100.00 0.000 K/sec 0 cpu-migrations 490635 100.00 0.000 K/sec 45 page-faults 490635 100.00 0.092 M/sec 629080 cycles 497698 100.00 1.282 GHz 409498 stalled-cycles-frontend 497698 100.00 65.09 frontend cycles idle <not supported> stalled-cycles-backend 0 100.00 491424 instructions 497698 100.00 0.78 insn per cycle 0.83 stalled cycles per insn 97278 branches 497698 100.00 198.270 M/sec 4569 branch-misses 497698 100.00 4.70 of all branches Two new fields are added: metric value and metric name. v2: Split out function argument changes v3: Reenable metrics for real. v4: Fix wrong hunk from refactoring. v5: Remove extra "noise" printing (Jiri), but add it to the not counted case. Print empty metrics for not counted. v6: Avoid outputting metric on empty format. v7: Print metric at the end v8: Remove extra run, ena fields v9: Avoid extra new line for unsupported counters Signed-off-by: -
Wang Nan authored
perf_evlist__mmap_ex() can fail without setting errno (for example, fail in condition checking. In this case all syscall is success). If this happen, record__open() incorrectly returns 0. Force setting rc is a quick way to avoid this problem, or we have to follow all possible code path in perf_evlist__mmap_ex() to make sure there's at least one system call before returning an error. Signed-off-by:
Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456479154-136027-30-git-send-email-wangnan0@huawei.comSigned-off-by:
He Kuang <hekuang@huawei.com> Signed-off-by:
-
Wang Nan authored
Move code for finalizing 'perf.data' to record__finish_output(). It will be used by following commits to split output to multiple files. Signed-off-by:
-
Wang Nan authored
Create record__synthesize(). It can be used to create tracking events for each perf.data after perf supporting splitting into multiple outputs. Signed-off-by:
-
Wang Nan authored
Commits in a BPF patchkit will extract kernel and module synthesizing code into a separated function and call it multiple times. This patch replace 'if (err < 0)' using WARN_ONCE, makes sure the error message show one time. Signed-off-by:
-
Wang Nan authored
After babeltrace commit 5cec03e402aa ("ir: copy variants and sequences when setting a field path"), 'perf data convert' gets incorrect result if there's bpf output data. For example: # perf data convert --to-ctf ./out.ctf # babeltrace ./out.ctf [10:44:31.186045346] (+?.?????????) evt: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF810E7DD1, perf_tid = 23819, perf_pid = 23819, perf_id = 518, raw_len = 3, raw_data = [ [0] = 0xC028E32F, [1] = 0x815D0100, [2] = 0x1000000 ] } [10:44:31.286101003] (+0.100055657) evt: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF8105B609, perf_tid = 23819, perf_pid = 23819, perf_id = 518, raw_len = 3, raw_data = [ [0] = 0x35D9F1EB, [1] = 0x15D81, [2] = 0x2 ] } The expected result of the first sample should be: raw_data = [ [0] = 0x2FE328C0, [1] = 0x15D81, [2] = 0x1 ] } however, 'perf data convert' output big endian value to resuling CTF file. The reason is a internal change (or a bug?) of babeltrace. Before this patch, at the first add_bpf_output_values(), byte order of all integer type is uncertain (is 0, neither 1234 (le) nor 4321 (be)). It would be fixed by: perf_evlist__deliver_sample -> process_sample_event -> ctf_stream ... ->bt_ctf_trace_add_stream_class ->bt_ctf_field_type_structure_set_byte_order ->bt_ctf_field_type_integer_set_byte_order during creating the stream. However, the babeltrace commit mentioned above duplicates types in sequence to prevent potential conflict in following call stack and link the newly allocated type into the 'raw_data' sequence: perf_evlist__deliver_sample -> process_sample_event -> ctf_stream ... -> bt_ctf_trace_add_stream_class -> bt_ctf_stream_class_resolve_types ... -> bt_ctf_field_type_sequence_copy ->bt_ctf_field_type_integer_copy This happens before byte order setting, so only the newly allocated type is initialized, the byte order of original type perf choose to create the first raw_data is still uncertain. Byte order in CTF output is not related to byte order in perf.data. Setting it to anything other than BT_CTF_BYTE_ORDER_NATIVE solves this problem (only BT_CTF_BYTE_ORDER_NATIVE needs to be fixed). To reduce behavior changing, set byte order according to compiling options. Signed-off-by: -
Wang Nan authored
bpf_perf_event_output() outputs data through sample->raw_data. This patch adds support to convert those data into CTF. A python script then can be used to process output data from BPF programs. Test result: # cat ./test_bpf_output_2.c /************************ BEGIN **************************/ #include <uapi/linux/bpf.h> struct bpf_map_def { unsigned int type; unsigned int key_size; unsigned int value_size; unsigned int max_entries; }; #define SEC(NAME) __attribute__((section(NAME), used)) static u64 (*ktime_get_ns)(void) = (void *)BPF_FUNC_ktime_get_ns; static int (*trace_printk)(const char *fmt, int fmt_size, ...) = (void *)BPF_FUNC_trace_printk; static int (*get_smp_processor_id)(void) = (void *)BPF_FUNC_get_smp_processor_id; static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) = (void *)BPF_FUNC_perf_event_output; struct bpf_map_def SEC("maps") channel = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int), .value_size = sizeof(u32), .max_entries = __NR_CPUS__, }; static inline int __attribute__((always_inline)) func(void *ctx, int type) { struct { u64 ktime; int type; } __attribute__((packed)) output_data; char error_data[] = "Error: failed to output\n"; int err; output_data.type = type; output_data.ktime = ktime_get_ns(); err = perf_event_output(ctx, &channel, get_smp_processor_id(), &output_data, sizeof(output_data)); if (err) trace_printk(error_data, sizeof(error_data)); return 0; } SEC("func_begin=sys_nanosleep") int func_begin(void *ctx) {return func(ctx, 1);} SEC("func_end=sys_nanosleep%return") int func_end(void *ctx) { return func(ctx, 2);} char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; /************************* END ***************************/ # ./perf record -e bpf-output/no-inherit,name=evt/ \ -e ./test_bpf_output_2.c/map:channel.event=evt/ \ usleep 100000 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.012 MB perf.data (2 samples) ] # ./perf script usleep 14942 92503.198504: evt: ffffffff810e0ba1 sys_nanosleep (/lib/modules/4.3.0.... usleep 14942 92503.298562: evt: ffffffff810585e9 kretprobe_trampoline_holder (/lib.... # ./perf data convert --to-ctf ./out.ctf [ perf data convert: Converted 'perf.data' into CTF data './out.ctf' ] [ perf data convert: Converted and wrote 0.000 MB (2 samples) ] # babeltrace ./out.ctf [01:41:43.198504134] (+?.?????????) evt: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF810E0BA1, perf_tid = 14942, perf_pid = 14942, perf_id = 1044, raw_len = 3, raw_data = [ [0] = 0x32C0C07B, [1] = 0x5421, [2] = 0x1 ] } [01:41:43.298562257] (+0.100058123) evt: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF810585E9, perf_tid = 14942, perf_pid = 14942, perf_id = 1044, raw_len = 3, raw_data = [ [0] = 0x38B77FAA, [1] = 0x5421, [2] = 0x2 ] } # cat ./test_bpf_output_2.py from babeltrace import TraceCollection tc = TraceCollection() tc.add_trace('./out.ctf', 'ctf') d = {1:[], 2:[]} for event in tc.events: if not event.name.startswith('evt'): continue raw_data = event['raw_data'] (time, type) = ((raw_data[0] + (raw_data[1] << 32)), raw_data[2]) d[type].append(time) print(list(map(lambda i: d[2][i] - d[1][i], range(len(d[1]))))); # python3 ./test_bpf_output_2.py [100056879] Committer note: Make sure you have python3-devel installed, not python-devel, which may be for python2, which will lead to some "PyInstance_Type" errors. Also make sure that you use the right libbabeltrace, because it is shipped in Fedora, for instance, but an older version. To build libbabeltrace's python binding one also needs to use: ./configure --enable-python-bindings And then set PYTHONPATH=/usr/local/lib64/python3.4/site-packages/. Signed-off-by: -
Andi Kleen authored
Only put the frontend/backend stalled cycles into the default perf stat events when the CPU actually supports them. This avoids empty columns with --metric-only on newer Intel CPUs. Committer note: Before: $ perf stat ls Performance counter stats for 'ls': 1.080893 task-clock (msec) # 0.619 CPUs utilized 0 context-switches # 0.000 K/sec 0 cpu-migrations # 0.000 K/sec 97 page-faults # 0.090 M/sec 3,327,741 cycles # 3.079 GHz <not supported> stalled-cycles-frontend <not supported> stalled-cycles-backend 1,609,544 instructions # 0.48 insn per cycle 319,117 branches # 295.235 M/sec 12,246 branch-misses # 3.84% of all branches 0.001746508 seconds time elapsed $ After: $ perf stat ls Performance counter stats for 'ls': 0.693948 task-clock (msec) # 0.662 CPUs utilized 0 context-switches # 0.000 K/sec 0 cpu-migrations # 0.000 K/sec 95 page-faults # 0.137 M/sec 1,792,509 cycles # 2.583 GHz 1,599,047 instructions # 0.89 insn per cycle 316,328 branches # 455.838 M/sec 12,453 branch-misses # 3.94% of all branches 0.001048987 seconds time elapsed $ Signed-off-by: -
Jiri Olsa authored
Ingo reported regression on display format of big numbers, which is missing separators (in default perf stat output). triton:~/tip> perf stat -a sleep 1 ... 127008602 cycles # 0.011 GHz 279538533 stalled-cycles-frontend # 220.09% frontend cycles idle 119213269 instructions # 0.94 insn per cycle This is caused by recent change: perf stat: Check existence of frontend/backed stalled cycles that added call to pmu_have_event, that subsequently calls perf_pmu__parse_scale, which has a bug in locale handling. The lc string returned from setlocale, that we use to store old locale value, may be allocated in static storage. Getting a dynamic copy to make it survive another setlocale call. $ perf stat ls ... 2,360,602 cycles # 3.080 GHz 2,703,090 instructions # 1.15 insn per cycle 546,031 branches # 712.511 M/sec Committer note: Since the patch introducing the regression didn't made to perf/core, move it to just before where the regression was introduced, so that we don't break bisection for this feature. Reported-by:Ingo Molnar <mingo@redhat.com> Signed-off-by:
-
Ingo Molnar authored
Commit: cf6d445f ("perf/x86/uncore: Track packages, not per CPU data") reorganized the uncore code to track packages, and introduced a dependency on MAX_APIC_ID. This constant is not available on UP-IOAPIC builds: arch/x86/events/intel/uncore.c:1350:44: error: 'MAX_LOCAL_APIC' undeclared here (not in a function) Include asm/apicdef.h explicitly to pick it up. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Harish Chegondi <harish.chegondi@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Signed-off-by:
-
- 29 Feb, 2016 6 commits
-
-
Steven Rostedt authored
Currently there's a single function that is used to display a record's data in human readable format. That's pevent_print_event(). Unfortunately, this gives little room for adding other output within the line without updating that function call. I've decided to split that function into 3 parts. pevent_print_event_task() which prints the task comm, pid and the CPU pevent_print_event_time() which outputs the record's timestamp pevent_print_event_data() which outputs the rest of the event data. pevent_print_event() now simply calls these three functions. To save time from doing the search for event from the record's type, I created a new helper function called pevent_find_event_by_record(), which returns the record's event, and this event has to be passed to the above functions. Signed-off-by:
-
Taeung Song authored
Some tracepoint have multiple fields with the same name, "nr", the first one is a unique syscall ID, the other is a syscall argument: # cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_io_getevents/format name: sys_enter_io_getevents ID: 747 format: field:unsigned short common_type; offset:0; size:2; signed:0; field:unsigned char common_flags; offset:2; size:1; signed:0; field:unsigned char common_preempt_count; offset:3; size:1; signed:0; field:int common_pid; offset:4; size:4; signed:1; field:int nr; offset:8; size:4; signed:1; field:aio_context_t ctx_id; offset:16; size:8; signed:0; field:long min_nr; offset:24; size:8; signed:0; field:long nr; offset:32; size:8; signed:0; field:struct io_event * events; offset:40; size:8; signed:0; field:struct timespec * timeout; offset:48; size:8; signed:0; print fmt: "ctx_id: 0x%08lx, min_nr: 0x%08lx, nr: 0x%08lx, events: 0x%08lx, timeout: 0x%08lx", ((unsigned long)(REC->ctx_id)), ((unsigned long)(REC->min_nr)), ((unsigned long)(REC->nr)), ((unsigned long)(REC->events)), ((unsigned long)(REC->timeout)) # Fix it by renaming the "/format" common tracepoint field "nr" to "__syscall_nr". Signed-off-by:
Taeung Song <treeze.taeung@gmail.com> [ Do not rename the struct member, just the '/format' field name ] Signed-off-by:
Peter Zijlstra <peterz@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160226132301.3ae065a4@gandalf.local.homeSigned-off-by:
-
Taeung Song authored
Format fields of a syscall have the first variable '__syscall_nr' or 'nr' that mean the syscall number. But it isn't relevant here so drop it. 'nr' among fields of syscall was renamed '__syscall_nr'. So add exception handling to drop '__syscall_nr' and modify the comment for this excpetion handling. Reported-by:
-
Jiri Olsa authored
The util/python-ext-sources file contains source files required to build the python extension relative to $(srctree)/tools/perf, Such a file path $(FILE).c is handed over to the python extension build system, which builds the final object in the $(PYTHON_EXTBUILD)/tmp/$(FILE).o path. After the build is done all files from $(PYTHON_EXTBUILD)lib/ are carried as the result binaries. Above system fails when we add source file relative to ../lib, which we do for: ../lib/bitmap.c ../lib/find_bit.c ../lib/hweight.c ../lib/rbtree.c All above objects will be built like: $(PYTHON_EXTBUILD)/tmp/../lib/bitmap.c $(PYTHON_EXTBUILD)/tmp/../lib/find_bit.c $(PYTHON_EXTBUILD)/tmp/../lib/hweight.c $(PYTHON_EXTBUILD)/tmp/../lib/rbtree.c which accidentally happens to be final library path: $(PYTHON_EXTBUILD)/lib/ Changing setup.py to pass full paths of source files to Extension build class and thus keep all built objects under $(PYTHON_EXTBUILD)tmp directory. Reported-by:
Jeff Bastian <jbastian@redhat.com> Signed-off-by:
Josh Boyer <jwboyer@fedoraproject.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: stable@vger.kernel.org # v4.2+ Link: http://lkml.kernel.org/r/20160227201350.GB28494@krava.redhat.comSigned-off-by:
-
Thomas Gleixner authored
Required to use it in modular perf drivers. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Thomas Gleixner authored
RAPL is a per package facility and we already have a mechanism for a dedicated per package reader. So there is no point to have multiple CPUs doing the same. The current implementation actually starts two timers on two CPUs if one does: perf stat -C1,2 -e -e power/energy-pkg .... which makes the whole concept of 1 reader per package moot. What's worse is that the above returns the double of the actual energy consumption, but that's a different problem to address and cannot be solved by removing the pointless per cpuness of that mechanism. Signed-off-by:
-
