summaryrefslogtreecommitdiffstats
path: root/tools/perf
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'perf-core-for-mingo-5.1-20190311' of ↵Thomas Gleixner2019-03-2241-250/+1805
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo: kernel: Stephane Eranian : - Restore mmap record type correctly when handling PERF_RECORD_MMAP2 events, as the same template is used for all the threads interested in mmap events, some may want just PERF_RECORD_MMAP, while some may want the extra info in MMAP2 records. perf probe: Adrian Hunter: - Fix getting the kernel map, because since changes related to x86 PTI entry trampolines handling, there are more than one kernel map. perf script: Andi Kleen: - Support insn output for normal samples, i.e.: perf script -F ip,sym,insn --xed Will fetch the sample IP from the thread address space and feed it to Intel's XED disassembler, producing lines such as: ffffffffa4068804 native_write_msr wrmsr ffffffffa415b95e __hrtimer_next_event_base movq 0x18(%rax), %rdx That match 'perf annotate's output. - Make the --cpu filter apply to PERF_RECORD_COMM/FORK/... events, in addition to PERF_RECORD_SAMPLE. perf report: - Add a new --samples option to save a small random number of samples per hist entry, using a reservoir technique to select a representative number of samples. Then allow browsing the samples using 'perf script' as part of the hist entry context menu. This automatically adds the right filters, so only the thread or CPU of the sample is displayed. Then we use less' search functionality to directly jump to the time stamp of the selected sample. It uses different menus for assembler and source display. Assembler needs xed installed and source needs debuginfo. - Fix the UI browser scripts pop up menu when there are many scripts available. perf report: Andi Kleen: - Add 'time' sort option. E.g.: % perf report --sort time,overhead,symbol --time-quantum 1ms --stdio ... 0.67% 277061.87300 [.] _dl_start 0.50% 277061.87300 [.] f1 0.50% 277061.87300 [.] f2 0.33% 277061.87300 [.] main 0.29% 277061.87300 [.] _dl_lookup_symbol_x 0.29% 277061.87300 [.] dl_main 0.29% 277061.87300 [.] do_lookup_x 0.17% 277061.87300 [.] _dl_debug_initialize 0.17% 277061.87300 [.] _dl_init_paths 0.08% 277061.87300 [.] check_match 0.04% 277061.87300 [.] _dl_count_modids 1.33% 277061.87400 [.] f1 1.33% 277061.87400 [.] f2 1.33% 277061.87400 [.] main 1.17% 277061.87500 [.] main 1.08% 277061.87500 [.] f1 1.08% 277061.87500 [.] f2 1.00% 277061.87600 [.] main 0.83% 277061.87600 [.] f1 0.83% 277061.87600 [.] f2 1.00% 277061.87700 [.] main tools headers: Arnaldo Carvalho de Melo: - Update x86's syscall_64.tbl, no change in tools/perf behaviour. - Sync copies asm-generic/unistd.h and linux/in with the kernel sources. perf data: Jiri Olsa: - Prep work to support having perf.data stored as a directory, with one file per CPU, that ultimately will allow having one ring buffer reading thread per CPU. Vendor events: Martin Liška: - perf PMU events for AMD Family 17h. perf script python: Tony Jones: - Add python3 support for the remaining Intel PT related scripts, with these we should have a clean build of perf with python3 while still supporting the build with python2. libbpf: Arnaldo Carvalho de Melo: - Fix the build on uCLibc, adding the missing stdarg.h since we use va_list in one typedef. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools report: Add custom scripts to script menuAndi Kleen2019-03-112-0/+28
| | | | | | | | | | | | | | | | | | | | | | Add a way to define custom scripts through ~/.perfconfig, which are then added to the scripts menu. The scripts get the same arguments as 'perf script', in particular -i, --cpu, --tid. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-10-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf ui browser: Fix ui popup argv browser for many entriesAndi Kleen2019-03-112-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the argv ui browser code to correctly display more entries than fit on the screen without crashing. The problem was some type confusion with pointer types in the ->seek function. Do the argv arithmetic correctly with char ** pointers. Also add some asserts to find overruns and limit the display function correctly. Then finally remove a workaround for this in the res sample browser. Committer testing: 1) Resize the x terminal to have just some 5 lines 2) Use 'perf report --samples 1' to activate the sample browser options in the menu 3) Press ENTER, this will cause the crash: # perf report --samples 1 perf: Segmentation fault -------- backtrace -------- perf[0x5a514a] /lib64/libc.so.6(+0x385bf)[0x7f27281b55bf] /lib64/libc.so.6(+0x161a67)[0x7f27282dea67] /lib64/libslang.so.2(SLsmg_write_wrapped_string+0x82)[0x7f272874a0b2] perf(ui_browser__argv_refresh+0x77)[0x5939a7] perf[0x5924cc] perf(ui_browser__run+0x39)[0x593449] perf(ui__popup_menu+0x83)[0x5a5263] perf[0x59f421] perf(perf_evlist__tui_browse_hists+0x3a0)[0x5a3780] perf(cmd_report+0x2746)[0x447136] perf[0x4a95fe] perf(main+0x61c)[0x42dc6c] /lib64/libc.so.6(__libc_start_main+0xf2)[0x7f27281a1412] perf(_start+0x2d)[0x42de9d] # After applying this patch no crash takes place in such situation. Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-12-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script: Add array bound checking to list_scriptsAndi Kleen2019-03-113-4/+10
| | | | | | | | | | | | | | | | | | | | Don't overflow array when the scripts directory is too large, or the script file name is too long. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-11-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add some new tips describing the new optionsAndi Kleen2019-03-111-0/+7
| | | | | | | | | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-9-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Implement browsing of individual samplesAndi Kleen2019-03-1112-1/+226
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now 'perf report' can show whole time periods with 'perf script', but the user still has to find individual samples of interest manually. It would be expensive and complicated to search for the right samples in the whole perf file. Typically users only need to look at a small number of samples for useful analysis. Also the full scripts tend to show samples of all CPUs and all threads mixed up, which can be very confusing on larger systems. Add a new --samples option to save a small random number of samples per hist entry. Use a reservoir sample technique to select a representatve number of samples. Then allow browsing the samples using 'perf script' as part of the hist entry context menu. This automatically adds the right filters, so only the thread or cpu of the sample is displayed. Then we use less' search functionality to directly jump the to the time stamp of the selected sample. It uses different menus for assembler and source display. Assembler needs xed installed and source needs debuginfo. Currently it only supports as many samples as fit on the screen due to some limitations in the slang ui code. Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311174605.GA29294@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Support builtin perf script in scripts menuAndi Kleen2019-03-114-40/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The scripts menu traditionally only showed custom perf scripts. Allow to run standard perf script with useful default options too. - Normal perf script - perf script with assembler (needs xed installed) - perf script with source code output (needs debuginfo) - perf script with custom arguments Then we automatically select the right options to display the information in the perf.data file. For example with -b display branch contexts. It's not easily possible to check for xed's existence in advance. perf script usually gives sensible error messages when it's not available. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-7-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Support running scripts for current time rangeAndi Kleen2019-03-111-11/+72
| | | | | | | | | | | | | | | | | | | | | | When using the time sort key, add new context menus to run scripts for only the currently selected time range. Compute the correct range for the selection add pass it as the --time option to perf script. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-6-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Support time sort keyAndi Kleen2019-03-115-0/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a time sort key to perf report to display samples for different time quantums separately. This allows easier analysis of workloads that change over time, and also will allow looking at the context of samples. % perf record ... % perf report --sort time,overhead,symbol --time-quantum 1ms --stdio ... 0.67% 277061.87300 [.] _dl_start 0.50% 277061.87300 [.] f1 0.50% 277061.87300 [.] f2 0.33% 277061.87300 [.] main 0.29% 277061.87300 [.] _dl_lookup_symbol_x 0.29% 277061.87300 [.] dl_main 0.29% 277061.87300 [.] do_lookup_x 0.17% 277061.87300 [.] _dl_debug_initialize 0.17% 277061.87300 [.] _dl_init_paths 0.08% 277061.87300 [.] check_match 0.04% 277061.87300 [.] _dl_count_modids 1.33% 277061.87400 [.] f1 1.33% 277061.87400 [.] f2 1.33% 277061.87400 [.] main 1.17% 277061.87500 [.] main 1.08% 277061.87500 [.] f1 1.08% 277061.87500 [.] f2 1.00% 277061.87600 [.] main 0.83% 277061.87600 [.] f1 0.83% 277061.87600 [.] f2 1.00% 277061.87700 [.] main Committer notes: Rename 'time' argument to hist_time() to htime to overcome this in older distros: cc1: warnings being treated as errors util/hist.c: In function 'hist_time': util/hist.c:251: error: declaration of 'time' shadows a global declaration /usr/include/time.h:186: error: shadowed declaration is here Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-4-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script: Filter COMM/FORK/.. events by CPUAndi Kleen2019-03-111-24/+47
| | | | | | | | | | | | | | | | | | | | | | The --cpu option only filtered samples. Filter other perf events, such as COMM, FORK, SWITCH by the CPU too. Reported-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190311144502.15423-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Update x86's syscall_64.tbl, no change in tools/perf behaviourArnaldo Carvalho de Melo2019-03-111-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in 7948450d4556 ("x86/x32: use time64 versions of sigtimedwait and recvmmsg"), that doesn't cause any change in behaviour in tools/perf/ as it deals just with the x32 entries. This silences this tools/perf build warning: Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl' diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-mqpvshayeqidlulx5qpioa59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script python: Add printdate function to SQL exportersTony Jones2019-03-112-13/+19
| | | | | | | | | | | | | | | | | | | | Introduce a printdate function to eliminate the repetitive use of datetime.datetime.today() in the SQL exporting scripts. Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20190309000518.2438-5-tonyj@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script python: Add Python3 support to export-to-sqlite.pyTony Jones2019-03-111-9/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the export-to-sqlite.py script The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20190309000518.2438-4-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script python: Add Python3 support to export-to-postgresql.pyTony Jones2019-03-111-17/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the export-to-postgresql.py script. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190309000518.2438-3-tonyj@suse.de Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script python: Add Python3 support to exported-sql-viewer.pyTony Jones2019-03-111-14/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the exported-sql-viewer.py script. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20190309000518.2438-2-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Use less for scripts outputAndi Kleen2019-03-111-113/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The UI viewer for scripts output has a lot of limitations: limited size, no search or save function, slow, and various other issues. Just use 'less' to display directly on the terminal instead. This won't work in GTK mode, but GTK doesn't support these context menus anyways. If that is ever done could use an terminal for the output. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Feng Tang <feng.tang@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190309055628.21617-8-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf session: Add process callback to reader objectJiri Olsa2019-03-111-4/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding callback function to reader object so callers can process data in different ways. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf header: Add DIR_FORMAT feature to describe directory dataJiri Olsa2019-03-115-3/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The data files layout is described by HEADER_DIR_FORMAT feature. Currently it holds only version number (1): uint64_t version; The current version holds only version value (1) means that data files: - Follow the 'data.*' name format. - Contain raw events data in standard perf format as read from kernel (and need to be sorted) Future versions are expected to describe different data files layout according to special needs. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Make perf_data__size() work over directoryJiri Olsa2019-03-112-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make perf_data__size() return proper size for directory data, summing up all the individual file sizes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Add perf_data__update_dir() functionJiri Olsa2019-03-112-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add perf_data__update_dir() to update the size for every file within the perf.data directory. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Don't store auxtrace index for directory data fileJiri Olsa2019-03-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't store the auxtrace index when we store into multiple files, because we keep only offset for it, not the file. The auxtrace data will be processed correctly in the 'pipe' mode. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Support having perf.data stored as a directoryJiri Olsa2019-03-113-1/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The caller needs to set 'struct perf_data::is_dir flag and the path will be treated as a directory. The 'struct perf_data::file' is initialized and open as 'path/header' file. Add a check to the direcory interface functions to check the is_dir flag. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190308134745.5057-2-jolsa@kernel.org [ Be consistent on how to signal failure, i.e. use -1 and let users check errno ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf vendor events amd: perf PMU events for AMD Family 17hMartin Liška2019-03-117-0/+829
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thi patch adds PMC events for AMD Family 17 CPUs as defined in [1]. It covers events described in section: 2.1.13. Regex pattern in mapfile.csv covers all CPUs of the family. [1] https://support.amd.com/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf Signed-off-by: Martin Liška <mliska@suse.cz> Acked-by: Borislav Petkov <bp@suse.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jon Grimm <jon.grimm@amd.com> Cc: Martin Jambor <mjambor@suse.cz> Cc: William Cohen <wcohen@redhat.com> Link: https://lkml.kernel.org/r/d65873ca-e402-b198-4fe9-8c4af81258c8@suse.cz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Fix getting the kernel mapAdrian Hunter2019-03-111-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines"), perf tools has been creating more than one kernel map, however 'perf probe' assumed there could be only one. Fix by using machine__kernel_map() to get the main kernel map. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Joseph Qi <joseph.qi@linux.alibaba.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiufei Xue <jiufei.xue@linux.alibaba.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Cc: Xu Yu <xuyu@linux.alibaba.com> Fixes: 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines") Fixes: d83212d5dd67 ("kallsyms, x86: Export addresses of PTI entry trampolines") Link: http://lkml.kernel.org/r/2ed432de-e904-85d2-5c36-5897ddc5b23b@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Parse time quantumAndi Kleen2019-03-114-0/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many workloads change over time. 'perf report' currently aggregates the whole time range reported in perf.data. This patch adds an option for a time quantum to quantisize the perf.data over time. This just adds the option, will be used in follow on patches for a time sort key. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20190305144758.12397-6-andi@firstfloor.org [ Use NSEC_PER_[MU]SEC ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf time-utils: Add utility function to print time stamps in nanosecondsAndi Kleen2019-03-112-0/+9
| | | | | | | | | | | | | | | | | | | | Add a utility function to print nanosecond timestamps. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20190305144758.12397-11-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Support output in nanosecondsAndi Kleen2019-03-115-6/+11
| | | | | | | | | | | | | | | | | | | | | | | | Upcoming changes add timestamp output in perf report. Add a --ns argument similar to perf script to support nanoseconds resolution when needed. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20190305144758.12397-5-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf script: Support insn output for normal samplesAndi Kleen2019-03-114-1/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf script -F +insn was only working for PT traces because the PT instruction decoder was filling in the insn/insn_len sample attributes. Support it for non PT samples too on x86 using the existing x86 instruction decoder. This adds some extra checking to ensure that we don't try to decode instructions when using perf.data from a different architecture. % perf record -a sleep 1 % perf script -F ip,sym,insn --xed ffffffff811704c9 remote_function movl %eax, 0x18(%rbx) ffffffff8100bb50 intel_bts_enable_local retq ffffffff81048612 native_apic_mem_write movl %esi, -0xa04000(%rdi) ffffffff81048612 native_apic_mem_write movl %esi, -0xa04000(%rdi) ffffffff81048612 native_apic_mem_write movl %esi, -0xa04000(%rdi) ffffffff810f1f79 generic_exec_single xor %eax, %eax ffffffff811704c9 remote_function movl %eax, 0x18(%rbx) ffffffff8100bb34 intel_bts_enable_local movl 0x2000(%rax), %edx ffffffff81048610 native_apic_mem_write mov %edi, %edi ... Committer testing: Before: # perf script -F ip,sym,insn --xed | head -5 ffffffffa4068804 native_write_msr addb %al, (%rax) ffffffffa4068804 native_write_msr addb %al, (%rax) ffffffffa4068804 native_write_msr addb %al, (%rax) ffffffffa4068806 native_write_msr addb %al, (%rax) ffffffffa4068806 native_write_msr addb %al, (%rax) # perf script -F ip,sym,insn --xed | grep -v "addb %al, (%rax)" # After: # perf script -F ip,sym,insn --xed | head -5 ffffffffa4068804 native_write_msr wrmsr ffffffffa4068804 native_write_msr wrmsr ffffffffa4068804 native_write_msr wrmsr ffffffffa4068806 native_write_msr nopl %eax, (%rax,%rax,1) ffffffffa4068806 native_write_msr nopl %eax, (%rax,%rax,1) # perf script -F ip,sym,insn --xed | grep -v "addb %al, (%rax)" | head -5 ffffffffa4068804 native_write_msr wrmsr ffffffffa4068804 native_write_msr wrmsr ffffffffa4068804 native_write_msr wrmsr ffffffffa4068806 native_write_msr nopl %eax, (%rax,%rax,1) ffffffffa4068806 native_write_msr nopl %eax, (%rax,%rax,1) # More examples: # perf script -F ip,sym,insn --xed | grep -v native_write_msr | head ffffffffa416b90e tick_check_broadcast_expired btq %rax, 0x1a5f42a(%rip) ffffffffa4956bd0 nmi_cpu_backtrace pushq %r13 ffffffffa415b95e __hrtimer_next_event_base movq 0x18(%rax), %rdx ffffffffa4956bf3 nmi_cpu_backtrace popq %r12 ffffffffa4171d5c smp_call_function_single pause ffffffffa4956bdd nmi_cpu_backtrace mov %ebp, %r12d ffffffffa4797e4d menu_select cmp $0x190, %rax ffffffffa4171d5c smp_call_function_single pause ffffffffa405a7d8 nmi_cpu_backtrace_handler callq 0xffffffffa4956bd0 ffffffffa4797f7a menu_select shr $0x3, %rax # Which matches the annotate output modulo resolving callqs: # perf annotate --stdio2 nmi_cpu_backtrace_handler Samples: 4 of event 'cycles:ppp', 4000 Hz, Event count (approx.): 35908, [percent: local period] nmi_cpu_backtrace_handler() /lib/modules/5.0.0+/build/vmlinux Percent Disassembly of section .text: ffffffff8105a7d0 <nmi_cpu_backtrace_handler>: nmi_cpu_backtrace_handler(): nmi_trigger_cpumask_backtrace(mask, exclude_self, nmi_raise_cpu_backtrace); } static int nmi_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs) { 24.45 → callq __fentry__ if (nmi_cpu_backtrace(regs)) mov %rsi,%rdi 75.55 → callq nmi_cpu_backtrace return NMI_HANDLED; movzbl %al,%eax return NMI_DONE; } ← retq # # perf annotate --stdio2 __hrtimer_next_event_base Samples: 4 of event 'cycles:ppp', 4000 Hz, Event count (approx.): 767977, [percent: local period] __hrtimer_next_event_base() /lib/modules/5.0.0+/build/vmlinux Percent Disassembly of section .text: ffffffff8115b910 <__hrtimer_next_event_base>: __hrtimer_next_event_base(): static ktime_t __hrtimer_next_event_base(struct hrtimer_cpu_base *cpu_base, const struct hrtimer *exclude, unsigned int active, ktime_t expires_next) { → callq __fentry__ <SNIP> 4a: add $0x1,%r14 77.31 mov 0x18(%rax),%rdx shl $0x6,%r14 sub 0x38(%rbx,%r14,1),%rdx if (expires < expires_next) { cmp %r12,%rdx ↓ jge 68 <SNIP> Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20190305144758.12397-3-andi@firstfloor.org [ Converted fetch_exe() to use the name it ended up having when merged: thread__memcpy() ] [ archinsn.c needs the instruction decoder that is only build when CONFIG_AUXTRACE=y, fix that ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2019-03-1049-446/+974
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Thomas Gleixner: "Perf updates and fixes: Kernel: - Handle events which have the bpf_event attribute set as side band events as they carry information about BPF programs. - Add missing switch-case fall-through comments Libraries: - Fix leaks and double frees in error code paths. - Prevent buffer overflows in libtraceevent Tools: - Improvements in handling Intel BT/PTS - Add BTF ELF markers to perf trace BPF programs to improve output - Support --time, --cpu, --pid and --tid filters for perf diff - Calculate the column width in perf annotate as the hardcoded 6 characters for the instruction are not sufficient - Small fixes all over the place" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits) perf/core: Mark expected switch fall-through perf/x86/intel/uncore: Fix client IMC events return huge result perf/ring_buffer: Use high order allocations for AUX buffers optimistically perf data: Force perf_data__open|close zero data->file.path perf session: Fix double free in perf_data__close perf evsel: Probe for precise_ip with simple attr perf tools: Read and store caps/max_precise in perf_pmu perf hist: Fix memory leak of srcline perf hist: Add error path into hist_entry__init perf c2c: Fix c2c report for empty numa node perf script python: Add Python3 support to intel-pt-events.py perf script python: Add Python3 support to event_analyzing_sample.py perf script python: add Python3 support to check-perf-trace.py perf script python: Add Python3 support to futex-contention.py perf script python: Remove mixed indentation perf diff: Support --pid/--tid filter options perf diff: Support --cpu filter option perf diff: Support --time filter option perf thread: Generalize function to copy from thread addr space from intel-bts code perf annotate: Calculate the max instruction name, align column to that ...
| * Merge tag 'perf-core-for-mingo-5.1-20190307' of ↵Ingo Molnar2019-03-0949-446/+974
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core changes from Arnaldo Carvalho de Melo: perf bpf: Arnaldo Carvalho de Melo: - Automatically add BTF ELF markers to 'perf trace' BPF programs, so that tools such as 'bpftool map dump' can pretty print map keys and values. perf c2c: Jiri Olsa: - Fix report for empty NUMA node. perf diff: Jin Yao: - Support --time, --cpu, --pid and --tid filter options. perf probe: Arnaldo Carvalho de Melo: - Clarify error message about not finding kernel modules debuginfo. perf record: Jiri Olsa: - Fixup probing for max attr.precise_ip. perf trace: Arnaldo Carvalho de Melo: - Add missing %s lost in the 'msg_flags' recvmmsg arg when adding prefix suppression logic. perf annotate: Arnaldo Carvalho de Melo: - Calculate the max instruction name, align column to that, removing the hardcoded max 6 chars and cope with instructions with names longer than that, such as vpmovmskb, vpcmpeqb, etc. kernel: Song Liu: - Consider events with attr.bpf_event set as side-band. Gustavo A. R. Silva: - Mark expected switch fall-through in perf_event_parse_addr_filter(). Libraries: Jiri Olsa: - Fix leaks and double frees on error paths. libtraceevent: Tony Jones: - Fix buffer overflow in arg_eval(). python scripting: Tony Jones: - More python3 fixes. Trivial: Yang Wei: - Remove needless extra semicolon in clang C++ glue code. Intel PT/BTS: Adrian Hunter: - Improve auxtrace address filter error message when there is no DSO. - Fix divide by zero when TSC is not available. - Further improvements to the export to sqlite/posgresql python scripts and to the GUI sqlviewer, exporting 'parent_id' so that we have enable the creation of call trees. Andi Kleen: - Generalize function to copy from thread addr space from intel-bts code. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| | * perf data: Force perf_data__open|close zero data->file.pathJiri Olsa2019-03-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Making sure the data->file.path is zeroed on perf_data__open error path and in perf_data__close, so we don't double free it in case someone call it twice. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf session: Fix double free in perf_data__closeJiri Olsa2019-03-061-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't call perf_data__close and subsequently perf_session__delete, because it will call perf_data__close again and cause double free for data->file.path. $ perf report -i . incompatible file format (rerun with -v to learn more) free(): double free detected in tcache 2 Aborted (core dumped) In fact we don't need to call perf_data__close at all, because at the time the got out_close is reached, session->data is already initialized, so the perf_data__close call will be triggered from perf_session__delete. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Fixes: 2d4f27999b88 ("perf data: Add global path holder") Link: http://lkml.kernel.org/r/20190305152536.21035-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf evsel: Probe for precise_ip with simple attrJiri Olsa2019-03-062-13/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we probe for precise_ip with user specified perf_event_attr, which might fail because of unsupported kernel features, which would get disabled during the open time anyway. Switching the probe to take place on simple hw cycles, so the following record sets proper precise_ip: # perf record -e cycles:P ls # perf evlist -v cycles:P: size: 112, ... precise_ip: 3, ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf tools: Read and store caps/max_precise in perf_pmuJiri Olsa2019-03-062-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Read the caps/max_precise value and store it in struct perf_pmu to be used when setting the maximum precise_ip field in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf hist: Fix memory leak of srclineJiri Olsa2019-03-061-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't allocate he->srcline unconditionaly, only when new hist_entry is created. Moving he->srcline allocation into hist_entry__init function. Original-patch-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Suggested-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Nageswara R Sastry <nasastry@in.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf hist: Add error path into hist_entry__initJiri Olsa2019-03-061-20/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding error path into hist_entry__init to unify error handling, so every new member does not need to free everything else. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: nageswara r sastry <nasastry@in.ibm.com> Link: http://lkml.kernel.org/r/20190305152536.21035-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf c2c: Fix c2c report for empty numa nodeJiri Olsa2019-03-061-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ravi Bangoria reported that we fail with an empty NUMA node with the following message: $ lscpu NUMA node0 CPU(s): NUMA node1 CPU(s): 0-4 $ sudo ./perf c2c report node/cpu topology bugFailed setup nodes Fix this by detecting the empty node and keeping its CPU set empty. Reported-by: Nageswara R Sastry <nasastry@in.ibm.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190305152536.21035-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf script python: Add Python3 support to intel-pt-events.pyTony Jones2019-03-061-13/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the intel-pt-events.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/fd26acf9-0c0f-717f-9664-a3c33043ce19@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf script python: Add Python3 support to event_analyzing_sample.pyTony Jones2019-03-061-23/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the event_analyzing_sample.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Feng Tang <feng.tang@intel.com> Link: http://lkml.kernel.org/r/20190302011903.2416-5-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf script python: add Python3 support to check-perf-trace.pyTony Jones2019-03-061-14/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python 2 and Python 3 in the check-perf-trace.py script. There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of from __future__ implies the minimum supported version of Python2 is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20190302011903.2416-4-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf script python: Add Python3 support to futex-contention.pyTony Jones2019-03-061-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support both Python2 and Python3 in the futex-contention.py script There may be differences in the ordering of output lines due to differences in dictionary ordering etc. However the format within lines should be unchanged. The use of 'from __future__' implies the minimum supported Python2 version is now v2.6 Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190302011903.2416-3-tonyj@suse.de Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf script python: Remove mixed indentationTony Jones2019-03-0614-135/+136
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove mixed indentation in Python scripts. Revert to either all tabs (most common form) or all spaces (4 or 8) depending on what was the intent of the original commit. This is necessary to complete Python3 support as it will flag an error if it encounters mixed indentation. Signed-off-by: Tony Jones <tonyj@suse.de> Link: http://lkml.kernel.org/r/20190302011903.2416-2-tonyj@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf diff: Support --pid/--tid filter optionsJin Yao2019-03-062-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the existing symbol_conf.pid_list_str and symbol_conf.tid_list_str logic. For example: perf diff --tid 13965 It'll only diff the samples for thread 13965. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf diff: Support --cpu filter optionJin Yao2019-03-062-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To improve 'perf diff', implement a --cpu filter option. Multiple CPUs can be provided as a comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. Default is to report samples on all CPUs. For example, perf diff --cpu 0,1 It only diff the samples for CPU0 and CPU1. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf diff: Support --time filter optionJin Yao2019-03-062-14/+179
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To improve 'perf diff', implement a --time filter option to diff the samples within given time window. It supports time percent with multiple time ranges. The time string format is 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'. For example: Select the second 10% time slice to diff: perf diff --time 10%/2 Select from 0% to 10% time slice to diff: perf diff --time 0%-10% Select the first and the second 10% time slices to diff: perf diff --time 10%/1,10%/2 Select from 0% to 10% and 30% to 40% slices to diff: perf diff --time 0%-10%,30%-40% It also supports analysing samples within a given time window <start>,<stop>. Times have the format seconds.microseconds. If 'start' is not given (i.e., time string is ',x.y') then analysis starts at the beginning of the file. If the stop time is not given (i.e, time string is 'x.y,') then analysis goes to end of file. Time string is 'a1.b1,c1.d1:a2.b2,c2.d2'. Use ':' to separate timestamps for different perf.data files. For example, we get the timestamp information from perf script. perf script -i perf.data.old mgen 13940 [000] 3946.361400: ... perf script -i perf.data mgen 13940 [000] 3971.150589 ... perf diff --time 3946.361400,:3971.150589, It analyzes the perf.data.old from the timestamp 3946.361400 to the end of perf.data.old and analyzes the perf.data from the timestamp 3971.150589 to the end of perf.data. v4: --- Update abstime_str_dup(), let it return error if strdup is failed, and update __cmd_diff() accordingly. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551791143-10334-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf thread: Generalize function to copy from thread addr space from ↵Andi Kleen2019-03-063-18/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | intel-bts code Add a utility function to fetch executable code. Convert one user over to it. There are more places doing that, but they do significantly different actions, so they are not easy to fit into a single library function. Committer changes: . No need to cast around, make 'buf' be a void pointer. . Rename it to thread__memcpy() to reflect the fact it is about copying a chunk of memory from a thread, i.e. from its address space. . No need to have it in a separate object file, move it to thread.[ch] . Check the return of map__load(), the original code didn't do it, but since we're moving this around, check that as well. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/r/20190305144758.12397-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf annotate: Calculate the max instruction name, align column to thatArnaldo Carvalho de Melo2019-03-064-33/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were hardcoding '6' as the max instruction name, and we have lots that are longer than that, see the diff from two 'P' printed TUI annotations for a libc function that uses instructions with long names, such as 'vpmovmskb' with its 9 chars: --- __strcmp_avx2.annotation.before 2019-03-06 16:31:39.368020425 -0300 +++ __strcmp_avx2.annotation 2019-03-06 16:32:12.079450508 -0300 @@ -2,284 +2,284 @@ Event: cycles:ppp Percent endbr64 - 0.10 mov %edi,%eax + 0.10 mov %edi,%eax - xor %edx,%edx + xor %edx,%edx - 3.54 vpxor %ymm7,%ymm7,%ymm7 + 3.54 vpxor %ymm7,%ymm7,%ymm7 - or %esi,%eax + or %esi,%eax - and $0xfff,%eax + and $0xfff,%eax - cmp $0xf80,%eax + cmp $0xf80,%eax - ↓ jg 370 + ↓ jg 370 - 27.07 vmovdqu (%rdi),%ymm1 + 27.07 vmovdqu (%rdi),%ymm1 - 7.97 vpcmpeqb (%rsi),%ymm1,%ymm0 + 7.97 vpcmpeqb (%rsi),%ymm1,%ymm0 - 2.15 vpminub %ymm1,%ymm0,%ymm0 + 2.15 vpminub %ymm1,%ymm0,%ymm0 - 4.09 vpcmpeqb %ymm7,%ymm0,%ymm0 + 4.09 vpcmpeqb %ymm7,%ymm0,%ymm0 - 0.43 vpmovmskb %ymm0,%ecx + 0.43 vpmovmskb %ymm0,%ecx - 1.53 test %ecx,%ecx + 1.53 test %ecx,%ecx - ↓ je b0 + ↓ je b0 - 5.26 tzcnt %ecx,%edx + 5.26 tzcnt %ecx,%edx - 18.40 movzbl (%rdi,%rdx,1),%eax + 18.40 movzbl (%rdi,%rdx,1),%eax - 7.09 movzbl (%rsi,%rdx,1),%edx + 7.09 movzbl (%rsi,%rdx,1),%edx - 3.34 sub %edx,%eax + 3.34 sub %edx,%eax 2.37 vzeroupper ← retq nop - 50: tzcnt %ecx,%edx + 50: tzcnt %ecx,%edx - movzbl 0x20(%rdi,%rdx,1),%eax + movzbl 0x20(%rdi,%rdx,1),%eax - movzbl 0x20(%rsi,%rdx,1),%edx + movzbl 0x20(%rsi,%rdx,1),%edx - sub %edx,%eax + sub %edx,%eax vzeroupper ← retq - data16 nopw %cs:0x0(%rax,%rax,1) + data16 nopw %cs:0x0(%rax,%rax,1) Reported-by: Travis Downs <travis.downs@gmail.com> LPU-Reference: CAOBGo4z1KfmWeOm6Et0cnX5Z6DWsG2PQbAvRn1MhVPJmXHrc5g@mail.gmail.com Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-89wsdd9h9g6bvq52sgp6d0u4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf clang: Remove needless extra semicolonYang Wei2019-03-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete a superfluous semicolon in getBPFObjectFromModule(). Signed-off-by: Yang Wei <yang.wei9@zte.com.cn> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yang Wei <albin_yang@163.com> Link: http://lkml.kernel.org/r/1551710174-3349-1-git-send-email-albin_yang@163.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf bpf: Automatically add BTF ELF markersArnaldo Carvalho de Melo2019-03-061-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The libbpf loader expects that some __btf_map_<MAP_NAME> structs be in place with the keys and values types of maps so that one can store the struct definitions and have them sent to the kernel via sys_bpf(fd, cmd = BTF_LOAD) and then later be retrievable via sys_bpf(fd, cmd = BPF_OBJ_GET_INFO_BY_FD) for use by tools such as 'bpftool map dump id MAP_ID'. Since we already have this for defining maps in 'perf trace' BPF events: bpf_map(name, _type, type_key, type_val, _max_entries) As used in the tools/perf/examples/bpf/augmented_raw_syscalls.c: --- 8< --- struct syscall { bool enabled; }; bpf_map(syscalls, ARRAY, int, struct syscall, 512); --- 8< --- All we need is to get all that already available info, piggyback on the 'bpf_map' define in tools/perf/include/bpf/bpf.h, that is included by 'perf trace' BPF programs and do that without requiring changes to the BPF programs already defining maps using 'bpf_map()'. So this is what we have before this patch: 1) With this in ~/.perfconfig to dump .c events as .o, aka save a copy so that we can use the .o later as a pre-compiled BPF bytecode: # grep '\[llvm\]' -A2 ~/.perfconfig [llvm] dump-obj = true clang-opt = -g # # clang --version clang version 9.0.0 (https://git.llvm.org/git/clang.git/ 7906282d3afec5dfdc2b27943fd6c0309086c507) (https://git.llvm.org/git/llvm.git/ a1b5de1ff8ae8bc79dc8e86e1f82565229bd0500) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/llvm/bin 2) Note the -g there so that we get clang to generate debuginfo, and since the target is 'bpf' it will generate the BTF info in this clang version (9.0). 3) Run a simple 'perf record' specifiying as an event the augmented_raw_syscalls.c source code: # perf record -e /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.c sleep 1 LLVM: dumping /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.025 MB perf.data ] # file /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o: ELF 64-bit LSB relocatable, eBPF, version 1 (SYSV), with debug_info, not stripped 4) Look at the BTF structs encoded in it: # pahole -F btf --sizes /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o syscall_enter_args 64 0 augmented_filename 264 0 syscall 1 0 syscall_exit_args 24 0 bpf_map 28 0 # # pahole -F btf -C syscalls /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o # pahole -F btf -C syscall /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o struct syscall { bool enabled; /* 0 1 */ /* size: 1, cachelines: 1, members: 1 */ /* last cacheline: 1 bytes */ }; # 5) Ok, with just this we don't have the markers expected by the libbpf loader and when we run with this BPF bytecode, because we have: # grep '\[trace\]' -A1 ~/.perfconfig [trace] add_events = /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o # 6) Lets do a 'perf trace' system wide session using this BPF program: # perf trace -e *mmsg,open* Cache2 I/O/6885 openat(AT_FDCWD, "/home/acme/.cache/mozilla/firefox/ina67tev.default/cache2/entries/BA220AB2914006A7AE96D27BE6EA13DD77519FCA", O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR) = 106 Cache2 I/O/6885 openat(AT_FDCWD, "/proc/self/mountinfo", O_RDONLY) = 121 Cache2 I/O/6885 openat(AT_FDCWD, "/proc/self/mountinfo", O_RDONLY) = 121 Cache2 I/O/6885 openat(AT_FDCWD, "/proc/self/mountinfo", O_RDONLY) = 121 Cache2 I/O/6885 openat(AT_FDCWD, "/proc/self/mountinfo", O_RDONLY) = 121 DNS Res~ver #3/23340 openat(AT_FDCWD, "/etc/hosts", O_RDONLY|O_CLOEXEC) = 106 DNS Res~ver #3/23340 sendmmsg(106<socket:[3482690]>, 0x7f252f1fcaf0, 2, MSG_NOSIGNAL) = 2 Cache2 I/O/6885 openat(AT_FDCWD, "/home/acme/.cache/mozilla/firefox/ina67tev.default/cache2/entries/BA220AB2914006A7AE96D27BE6EA13DD77519FCA", O_RDWR) = 106 lighttpd/18915 openat(AT_FDCWD, "/proc/loadavg", O_RDONLY) = 12 7) While it runs lets see the maps that 'perf trace' + libbpf's BPF loader loaded into the kernel via sys_bpf(fd, BPF_BTF_LOAD, ...): # bpftool map list | tail -6 149: perf_event_array name __augmented_sys flags 0x0 key 4B value 4B max_entries 8 memlock 4096B 150: array name syscalls flags 0x0 key 4B value 1B max_entries 512 memlock 8192B 151: hash name pids_filtered flags 0x0 key 4B value 1B max_entries 64 memlock 8192B # 8) Dump the "pids_filtered", map, that will have one entry per PID that 'perf trace' wants filtered, which includes its own, to avoid a tracing feedback loop (perf trace shows the syscalls it does which generates more syscalls that it has to show that...), it also auto-filters the 'gnome-terminal' and 'sshd' parent PIDs, for the same reason: # bpftool map dump id 151 key: a5 0c 00 00 value: 01 key: 14 63 00 00 value: 01 Found 2 elements # 9) Since there is no BTF info available, it does a generic hex dump :-\ 10) Now, with this patch applied, we'll do steps 3 to 6 again and look with pahole if there are extra structs encoded in BTF: # pahole -F btf --sizes /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o syscall_enter_args 64 0 augmented_filename 264 0 syscall 1 0 syscall_exit_args 24 0 bpf_map 28 0 ____btf_map___augmented_syscalls__ 8 0 ____btf_map_syscalls 8 0 ____btf_map_pids_filtered 8 0 # 11) Yes, those __btf_map_ + the map names, lets see how they look like: # pahole -F btf -C ____btf_map_syscalls /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o struct ____btf_map_syscalls { int key; /* 0 4 */ struct syscall value; /* 4 1 */ /* size: 8, cachelines: 1, members: 2 */ /* padding: 3 */ /* last cacheline: 8 bytes */ }; # 12) Lets repeat step 7 to get the new map ids: # bpftool map list | tail -6 155: perf_event_array name __augmented_sys flags 0x0 key 4B value 4B max_entries 8 memlock 4096B 156: array name syscalls flags 0x0 key 4B value 1B max_entries 512 memlock 8192B 157: hash name pids_filtered flags 0x0 key 4B value 1B max_entries 64 memlock 8192B # 13) And finally lets dump the 'pids_filtered': # bpftool map dump id 157 [{ "key": 3237, "value": true },{ "key": 26435, "value": true } ] # Looks much better! BTF info was used to interpret the key as an integer and the value as a struct with just one boolean member, so to make it more compact, show just the 'true' value where we saw '01'. Now to make 'perf trace --dump-map' to use BTF! Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-ybuf9wpkm30xk28iq7jbwb40@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf beauty msg_flags: Add missing %s lost when adding prefix suppression logicArnaldo Carvalho de Melo2019-03-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the prefix suppresion/enabling logic was added, I forgot to add an extra %, which ended up chopping off the strings: Before: # perf trace -e *mmsg --map-dump syscalls [299] = 1, [307] = 1, DNS Res~ver #3/14587 sendmmsg(106<socket:[3462393]>, 0x7f252b0fcaf0, 2, MSG_) = 2 chronyd/1053 recvmmsg(4, 0x558542ca5740, 4, MSG_, NULL) = 1 DNS Res~ver #2/14445 sendmmsg(106<socket:[3461475]>, 0x7f252ab09af0, 2, MSG_) = 2 DNS Res~ver #2/14444 sendmmsg(146<socket:[3457863]>, 0x7f2521a7aaf0, 2, MSG_) = 2 DNS Res~ver #2/14445 sendmmsg(106<socket:[3461475]>, 0x7f252ab09af0, 2, MSG_) = 2 DNS Res~ver #3/14587 sendmmsg(148<socket:[3460636]>, 0x7f252b0fcaf0, 2, MSG_) = 2 DNS Res~ver #2/14444 sendmmsg(146<socket:[3457863]>, 0x7f2521a7aaf0, 2, MSG_) = 2 ^C# After: # perf trace -e *mmsg --map-dump syscalls [299] = 1, [307] = 1, NetworkManager/17467 sendmmsg(22<socket:[3466493]>, 0x7f28927f9bb0, 2, MSG_NOSIGNAL) = 2 pool/17478 sendmmsg(10<socket:[3466523]>, 0x7f2769f95e90, 2, MSG_NOSIGNAL) = 2 DNS Res~ver #3/14587 sendmmsg(121<socket:[3466132]>, 0x7f252b0fcaf0, 2, MSG_NOSIGNAL) = 2 chronyd/1053 recvmmsg(4, 0x558542ca5740, 4, MSG_DONTWAIT, NULL) = 1 Socket Thread/17433 sendmmsg(121<socket:[3460903]>, 0x7f252668baf0, 2, MSG_NOSIGNAL) = 2 ^C# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: c65c83ffe904 ("perf trace: Allow asking for not suppressing common string prefixes") Link: https://lkml.kernel.org/n/tip-t2eu1rqx710k6jr4814mlzg7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-08 21:20:00 +0000