summaryrefslogtreecommitdiffstats
path: root/tools/perf
Commit message (Collapse)AuthorAgeFilesLines
...
* | perf callchain: Per-event type selection supportKan Liang2015-08-127-3/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchkit adds the ability to set callgraph mode (fp, dwarf, lbr) per event. This in term can reduce sampling overhead and the size of the perf.data. Here is an example. perf record -e 'cpu/cpu-cycles,period=1000,call-graph=fp,time=1/,cpu/instructions,call-graph=lbr/' sleep 1 perf evlist -v cpu/cpu-cycles,period=1000,call-graph=fp,time=1/: type: 4, size: 112, config: 0x3c, { sample_period, sample_freq }: 1000, sample_type: IP|TID|TIME|CALLCHAIN|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 cpu/instructions,call-graph=lbr/: type: 4, size: 112, config: 0xc0, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|PERIOD|BRANCH_STACK|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, enable_on_exec: 1, sample_id_all: 1, exclude_guest: 1 Signed-off-by: Kan Liang <kan.liang@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1439289050-40510-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf probe: Fix to show lines of sys_ functions correctlyMasami Hiramatsu2015-08-121-5/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "perf probe --lines sys_poll" shows only the first line of sys_poll, because the SYSCALL_DEFINE macro: ---- SYSCALL_DEFINE*(foo,...) { body; } ---- is expanded as below (on debuginfo) ---- static inline int SYSC_foo(...) { body; } int SyS_foo(...) <- is an alias of sys_foo. { return SYSC_foo(...); } ---- So, "perf probe --lines sys_foo" decodes SyS_foo function and it also skips inlined functions(SYSC_foo) inside the target function because those functions are usually defined somewhere else. To fix this issue, this fix checks whether the inlined function is defined at the same point of the target function, and if so, it doesn't skip the inline function. Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150812012406.11811.94691.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf hists browser: Make ESC unzoom as wellArnaldo Carvalho de Melo2015-08-121-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In addition to <-, that may be repurposed for horizontal scrolling. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-w3rctelxr4yxrjufx7z3fclb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf ui browser: Introduce ui_browser__printf()Arnaldo Carvalho de Melo2015-08-126-22/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To remove direct access to libslang functions, with the immediate goal of implementing horizontal scrolling at the ui_browser level, but also because we may at some point want to implement ui_browser with other UIs in addition to the current libslang implementation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-w0niblabqrkecs4o0eogfy6c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf ui browser: Introduce ui_browser__write_nstring()Arnaldo Carvalho de Melo2015-08-128-22/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To remove direct access to libslang functions, with the immediate goal of implementing horizontal scrolling at the ui_browser level, but also because we may at some point want to implement ui_browser with other UIs in addition to the current libslang implementation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-437ineavoejzou727mr9bxpi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Beautify keyctl's option argArnaldo Carvalho de Melo2015-08-121-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 8.697 (0.103 ms): pool/2343 keyctl(option: GET_PERSISTENT, arg2: 1000, arg3: 4294967294, arg4: 140703061514067, arg5: 140703692383680) = 1023192809 8.763 (0.049 ms): pool/2343 keyctl(option: SEARCH, arg2: 1023192809, arg3: 140703745767772, arg4: 140703745767832, arg5: 4294967294) = 140224497 8.789 (0.016 ms): pool/2343 keyctl(option: SEARCH, arg2: 140224497, arg3: 140703745767814, arg4: 140703745767900) = 512300257 8.807 (0.011 ms): pool/2343 keyctl(option: READ, arg2: 512300257 ) = 13 8.822 (0.008 ms): pool/2343 keyctl(option: READ, arg2: 512300257, arg3: 140703061514000, arg4: 13 ) = 13 8.837 (0.007 ms): pool/2343 keyctl(option: READ, arg2: 140224497 ) = 4 8.852 (0.009 ms): pool/2343 keyctl(option: READ, arg2: 140224497, arg3: 140703061514000, arg4: 4 ) = 4 8.869 (0.010 ms): pool/2343 keyctl(option: SEARCH, arg2: 140224497, arg3: 140703745767772, arg4: 140703061514032) = -1 ENOKEY Required key not available 8.892 (0.017 ms): pool/2343 keyctl(option: DESCRIBE, arg2: 512300257 ) = 43 8.910 (0.012 ms): pool/2343 keyctl(option: DESCRIBE, arg2: 512300257, arg3: 140703061544384, arg4: 43) = 43 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-013ab219irsxngyumrf5gp8s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Use the FD beautifier for socket syscall fdsArnaldo Carvalho de Melo2015-08-121-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | But we really should have something like 'strace -yy' here... Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-eyrt1ypfq68u4ljagyk2nj1i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf sort: Check for SRCLINE_UNKNOWN case in "srcfile" processingAndi Kleen2015-08-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle the SRCLINE_UNKNOWN case correctly when processing "srcfile". Commiter note: We can't just free it, as it was't allocated via malloc, its a guard variable. Reported-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20150811133655.GC4524@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Add missing clockid entriesArnaldo Carvalho de Melo2015-08-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were missing: CLOCK_BOOTTIME, CLOCK_REALTIME_ALARM, CLOCK_BOOTTIME_ALARM, CLOCK_SGI_CYCLE and CLOCK_TAI. Add them. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-d67rwqtwm9jyenwes98kr0cr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Associate some more syscall args with the getname beautifierArnaldo Carvalho de Melo2015-08-121-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This time using 'trinity' to test these: fchmodat, futimesat, llistxattr, lremovexattr, lstat, mknodat, mq_unlink, stat and vmsplice. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-a1uqu249nwwh0ixrhm80k4a4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf evlist: Be more specific on -F/--freqNamhyung Kim2015-08-101-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently perf evlist -F shows the number as if it's always sampling frequency. But we now support per-event freq/period settings. So it'd better to show more detailed info whether it's freq or period. $ perf record -e 'cpu/config=1/,cpu/config=2,period=300000/' sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data ] $ perf evlist -F cpu/config=1/: sample_freq=4000 cpu/config=2,period=300000/: sample_period=300000 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1439102724-14079-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf record: Support per-event freq termNamhyung Kim2015-08-107-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Now perf can set per-event value of time and (sampling) period. But I guess most users like me just want to set frequency rather than period. So add the 'freq' term in the event parser. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1439102724-14079-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Add support for srcfile sort keyAndi Kleen2015-08-105-0/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases it's useful to characterize samples by file. This is useful to get a higher level categorization, for example to map cost to subsystems. Add a srcfile sort key to perf report. It builds on top of the existing srcline support. Commiter notes: E.g.: # perf record -F 10000 usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.016 MB perf.data (13 samples) ] [root@zoo ~]# perf report -s srcfile --stdio # Total Lost Samples: 0 # # Samples: 13 of event 'cycles' # Event count (approx.): 869878 # # Overhead Source File # ........ ........... 60.99% . 20.62% paravirt.h 14.23% rmap.c 4.04% signal.c 0.11% msr.h # The first line is collecting all the files for which srcfiles couldn't somehow get resolved to: # perf report -s srcfile,dso --stdio # Total Lost Samples: 0 # # Samples: 13 of event 'cycles' # Event count (approx.): 869878 # # Overhead Source File Shared Object # ........ ........... ................ 40.97% . ld-2.20.so 20.62% paravirt.h [kernel.vmlinux] 20.02% . libc-2.20.so 14.23% rmap.c [kernel.vmlinux] 4.04% signal.c [kernel.vmlinux] 0.11% msr.h [kernel.vmlinux] # XXX: Investigate why that is not resolving on Fedora 21, Andi says he hasn't seen this on Fedora 22. 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/1438988064-21834-1-git-send-email-andi@firstfloor.org [ Added column length update, from 0e65bdb3f90f ('perf hists: Update the column width for the "srcline" sort key') ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf hists: Update the column width for the "srcline" sort keyArnaldo Carvalho de Melo2015-08-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we introduce a new sort key, we need to update the hists__calc_col_len() function accordingly, otherwise the width will be limited to strlen(header). We can't update it when obtaining a line value for a column (for instance, in sort__srcline_cmp()), because we reset it all when doing a resort (see hists__output_recalc_col_len()), so we need to, from what is in the hist_entry fields, set each of the column widths. Cc: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Fixes: 409a8be61560 ("perf tools: Add sort by src line/number") Link: http://lkml.kernel.org/n/tip-jgbe0yx8v1gs89cslr93pvz2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf hists: hist_entry__cmp() may use he_tmp.hists, initialize itArnaldo Carvalho de Melo2015-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The iter_add_next_cumulative_entry() function calls hist_entry__cmp(), which may want to access the hists where this hist_entry is stored, initialize it to let that happen and avoid segfaults. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-iqg98sfn4fvwcxp0pdvqauie@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Unset perf_event_attr::freq when period term is setJiri Olsa2015-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to unset 'perf_event_attr::freq' bit (default 1) when 'period' term is specified within event definition like: -e 'cpu/cpu-cycles,call-graph=fp,time,period=100000' otherwise it will handle the period value as frequency (and fail if it crossed the maximum allowed frequency value). Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150808171210.GC17040@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Support full source file paths for srclineAndi Kleen2015-08-106-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For perf report/script srcline currently only the base file name of the source file is printed. This is a good default because it usually fits on the screen. But in some cases we want to know the full file name, for example to aggregate hits per file. In the later case we need more than the base file name to resolve file naming collisions: for example the kernel source has ~70 files named "core.c" It's also useful as input to post processing tools which want to point to the right file. Add a flag to allow full file name output. Add an option to perf report/script to enable this option. 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/1438986245-15191-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf callchain: Move option parsing code to util.cKan Liang2015-08-084-88/+94
| | | | | | | | | | | | | | | | | | | | | | | | Move callchain option parse related code to util.c, to avoid dragging more object files into the python binding. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1438890294-33409-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Move perf_counts struct and functions into separate objectJiri Olsa2015-08-088-81/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Moving 'struct perf_counts' and associated functions into separate object, so we could remove stat.c object dependency from python build. It makes the python code to build properly, because it fails to load due to missing stat-shadow.c object dependency if some patches from Kan Liang are applied. So apply this one, then Kan's. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150807105103.GB8624@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tests: Add LLVM test for eBPF on-the-fly compilingWang Nan2015-08-077-0/+124
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previous patches introduce llvm__compile_bpf() to compile source file to eBPF object. This patch adds testcase to test it. It also tests libbpf by opening generated object after applying next patch which introduces HAVE_LIBBPF_SUPPORT option. Since llvm__compile_bpf() prints long messages which users who don't explicitly test llvm doesn't care, this patch set verbose to -1 to suppress all debug, warning and error message, and hint user use 'perf test -v' to see the full output. For the same reason, if clang is not found in PATH and there's no [llvm] section in .perfconfig, skip this test. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/1436445342-1402-17-git-send-email-wangnan0@huawei.com [ Add tools/lib/bpf/ to tools/perf/MANIFEST, so that the tarball targets build ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Auto detecting kernel include optionsWang Nan2015-08-071-5/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To help user find correct kernel include options, this patch extracts them from kbuild system by an embedded script kinc_fetch_script, which creates a temporary directory, generates Makefile and an empty dummy.o then use the Makefile to fetch $(NOSTDINC_FLAGS), $(LINUXINCLUDE) and $(EXTRA_CFLAGS) options. The result is passed to compiler script using 'KERNEL_INC_OPTIONS' environment variable. Because options from kbuild contains relative path like 'Iinclude/generated/uapi', the work directory must be changed. This is done by previous patch. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1436445342-1402-16-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Auto detecting kernel build directoryWang Nan2015-08-071-1/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch detects kernel build directory by checking the existence of include/generated/autoconf.h. clang working directory is changed to kbuild directory if it is found, to help user use relative include path. Following patch will detect kernel include directory, which contains relative include patch so this workdir changing is needed. Users are allowed to set 'kbuild-dir = ""' manually to disable this checking. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/tip-owyfwfbemrjn0tlj6tgk2nf5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Call clang to compile C source to object codeWang Nan2015-08-072-0/+229
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the core patch for supporting eBPF on-the-fly compiling, does the following work: 1. Search clang compiler using search_program(). 2. Run command template defined in llvm-bpf-cmd-template option in [llvm] config section using read_from_pipe(). Patch of clang and source code path is injected into shell command using environment variable using force_set_env(). Commiter notice: When building with DEBUG=1 we get a compiler error that gets fixed with the same approach described in commit b236512280fb: perf kmem: Fix compiler warning about may be accessing uninitialized variable The last argument to strtok_r doesn't need to be initialized, its just a placeholder to make this routine reentrant, but gcc doesn't know about that and complains, breaking the build, fix it by setting it to NULL. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/1436445342-1402-14-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Introduce llvm config optionsWang Nan2015-08-074-0/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces [llvm] config section with 5 options. Following patches will use then to config llvm dynamica compiling. 'llvm-utils.[ch]' is introduced in this patch for holding all llvm/clang related stuffs. Example: [llvm] # Path to clang. If omit, search it from $PATH. clang-path = "/path/to/clang" # Cmdline template. Following line shows its default value. # Environment variable is used to passing options. # # *NOTE*: -D__KERNEL__ MUST appears before $CLANG_OPTIONS, # so user have a chance to use -U__KERNEL__ in $CLANG_OPTIONS # to cancel it. clang-bpf-cmd-template = "$CLANG_EXEC -D__KERNEL__ $CLANG_OPTIONS \ $KERNEL_INC_OPTIONS -Wno-unused-value \ -Wno-pointer-sign -working-directory \ $WORKING_DIR -c $CLANG_SOURCE -target \ bpf -O2 -o -" # Options passed to clang, will be passed to cmdline by # $CLANG_OPTIONS. clang-opt = "-Wno-unused-value -Wno-pointer-sign" # kbuild directory. If not set, use /lib/modules/`uname -r`/build. # If set to "" deliberately, skip kernel header auto-detector. kbuild-dir = "/path/to/kernel/build" # Options passed to 'make' when detecting kernel header options. kbuild-opts = "ARCH=x86_64" Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1437477214-149684-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Extend the event parser maximum error indexAdrian Hunter2015-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | Extend the event parser maximum error index from 10 to 13. That allows PMU config terms of up to 10 characters to display un-truncated in the error message. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Validate config term maximum valueAdrian Hunter2015-08-061-1/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the value of a PMU config term is silently truncated if it is too big. This is an impediment to validating the value for other criteria later on i.e. the user provides an invalid value that gets truncated to a valid one. The maximum value validation is only done for the parser where the error is passed back to the user. In other cases the silent truncation continues so as not to affect tools that perhaps rely on it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-16-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Add perf_pmu__format_bits()Adrian Hunter2015-08-062-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | Add perf_pmu__format_bits() to get the format bits for a PMU config term. Intel PT will use this to validate terms and to record format bits to enable later interpreting the config from the attribute stored in the perf.data file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Fix perf-with-kcore handling of arguments containing spacesAdrian Hunter2015-08-061-14/+14
| | | | | | | | | | | | | | | | | | | | Fix the perf-with-kcore script so that it doesn't split arguments that contain spaces. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf auxtrace: Fix period type 'i' not workingAdrian Hunter2015-08-061-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | PERF_ITRACE_PERIOD_INSTRUCTIONS is zero so it got overwritten by the default period type. Fix by checking if the period type was set rather than if the value was zero when applying the default. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1437150840-31811-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools xtensa: Add DWARF register namesMax Filippov2015-08-064-0/+30
| | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Chris Zankel <chris@zankel.net> Cc: Marc Gauthier <marc@cadence.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-xtensa@linux-xtensa.org Link: http://lkml.kernel.org/r/1437208216-15729-9-git-send-email-jcmvbkbc@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Display cycles in branch sort modeAndi Kleen2015-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Display the cycles by default in branch sort mode. To make enough room for the new column I removed dso_to. It is usually redundant with dso_from. 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/1437233094-12844-9-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf top: Add branch annotation code to topAndi Kleen2015-08-062-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we can process branch data in annotate it makes sense to support enabling branch recording from top too. Most of the code needed for this is already in shared code with report. But we need to add: - The option parsing code (using shared code from the previous patch) - Document the options - Set up the IPC/cycles accounting state in the top session - Call the accounting code in the hist iter callback 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/1437233094-12844-8-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf annotate: Finally display IPC and cycle accountingAndi Kleen2015-08-061-17/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add two new columns to the annotate display and display the average cycles and the compute IPC if available. When the LBR was not in any branch mode the IPC computation is automatically disabled. We still display the cycle information. Example output (with made up numbers): The second column is the IPC and third average cycles. │ __attribute__((noinline)) f2() │ { 5.15 0.07 │ push %rbp 0.01 0.07 │ mov %rsp,%rbp │ c = a / b; 9.87 0.07 │ mov a,%eax 0.07 │ mov b,%ecx 0.07 │ cltd 4.92 0.07 123│ idiv %ecx 70.79 0.07 │ mov %eax,__TMC_END__ │ } 9.25 0.07 │ pop %rbp 0.01 0.07 123│ ← retq v2: Fix display problems. 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/1437233094-12844-7-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf annotate: Compute IPC and basic block cyclesAndi Kleen2015-08-062-1/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Compute the IPC and the basic block cycles for the annotate display. IPC is computed by counting the instructions, and then dividing the accounted cycles by that count. The actual IPC computation can only be done at annotate time, because we need to parse the objdump output first to know the number of instructions in the basic block. The cycles/IPC are also put into the perf function annotation so that the display code can show them. Again basic block overlaps are not handled, with the longest winning, but there are some heuristics to hide the IPC when the longest is not the most common. v2: Compute IPC correctly. 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/1437233094-12844-6-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Add processing for cycle histogramsAndi Kleen2015-08-063-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call the earlier added cycle histogram infrastructure from the perf report hist iter callback. For this we walk the branch records. This allows to use cycle histograms when browsing perf report annotate. v2: Rename flag 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/1437233094-12844-5-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Add infrastructure for a cycles histogramAndi Kleen2015-08-063-3/+142
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds the basic infrastructure to keep track of cycle counts per basic block for annotate. We allocate an array similar to the normal accounting, and then account branch cycles there. We handle two cases: cycles per basic block with start and cycles per branch (these are later used for either IPC or just cycles per BB) In the start case we cannot handle overlaps, so always the longest basic block wins. For the cycles per branch case everything is accurately accounted. v2: Remove unnecessary checks. Slight restructure. Move symbol__get_annotation to another patch. Move histogram allocation. v3: Merged with current tree Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1437233094-12844-4-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Add flag for non ANY branch modeAndi Kleen2015-08-063-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Later patches need to cheaply check that the branch mode is in ANY. Add a new function to check all event attrs and add a flag to the report state, which is then initialized. v2: Rename flag Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1437233094-12844-3-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Add support for cycles, weight branch_info fieldAndi Kleen2015-08-067-6/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cycles is a new branch_info field available on some CPUs that indicates the time deltas between branches in the LBR. Add a sort key and output code for the cycles to allow to display the basic block cycles individually in perf report. We also pass in the cycles for weight when LBRs are processed, which allows to get global and local weight, to get an estimate of the total cost. And also print the cycles information for perf report -D. I also added printing for the previously missing LBR flags (mispredict etc.) Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1437233094-12844-2-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Add empty Build files for architectures lacking themBen Hutchings2015-08-063-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf currently fails to build on MIPS as there is no tools/perf/arch/mips/Build file. Adding an empty file fixes this as there are no MIPS-specific sources to build. It looks like the same is needed for Alpha and PA-RISC, though I haven't been able to test those. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Fixes: 5e8c0fb6a957 ("perf build: Add arch x86 objects building") Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1438704627.7315.2.camel@decadent.org.uk Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Move counter processing code into stat objectJiri Olsa2015-08-063-140/+143
| | | | | | | | | | | | | | | | | | | | | | | | Moving counter processing code into stat object as perf_stat__process_counter. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Pass 'struct perf_stat_config' into process_counter()Jiri Olsa2015-08-061-13/+16
| | | | | | | | | | | | | | | | | | | | | | | | Passing 'struct perf_stat_config' into process_counter(), so that we can make process_counter() non static and use it from other places. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Move 'interval' into struct perf_stat_configJiri Olsa2015-08-062-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | Moving 'interval' into struct perf_stat_config. The point is to centralize the base stat config so it could be used localy together with other stat routines in other parts of perf code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Move 'output' into struct perf_stat_configJiri Olsa2015-08-062-12/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | Moving 'output' into struct perf_stat_config. The point is to centralize the base stat config so it could be used localy together with other stat routines in other parts of perf code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Move 'scale' into struct perf_stat_configJiri Olsa2015-08-062-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | Moving 'scale' into struct perf_stat_config. The point is to centralize the base stat config so it could be used localy together with other stat routines in other parts of perf code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf stat: Introduce struct perf_stat_configJiri Olsa2015-08-062-17/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | Moving 'aggr_mode' into new struct. The point is to centralize the base stat config so it could be used localy together with other stat routines in other parts of perf code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437481927-29538-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Add missing forward declaration of struct map to probe-event.hWang Nan2015-08-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 7b6ff0bdbf4f7f429c2116cca92a6d171217449e ("perf probe ppc64le: Fixup function entry if using kallsyms lookup") adds 'struct map' into probe-event.h but not forward declares it. This patch fixes it. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Fixes: 7b6ff0bdbf4f ("perf probe ppc64le: Fixup function entry if using kallsyms lookup") Link: http://lkml.kernel.org/n/1436445342-1402-30-git-send-email-wangnan0@huawei.com [ No need to include map.h, just forward declare 'struct map' ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Introduce veprintfWang Nan2015-08-062-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | va_args alternative to eprintf(). Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/n/1436445342-1402-19-git-send-email-wangnan0@huawei.com [ split from another patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Add total time column to summary.Milian Wolff2015-08-061-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is cumbersome to manually calculate the total time spent in a given syscall by multiplying the average value with the number of calls. Instead, we now do this directly inside perf trace. Note that this is also done by 'strace', which even adds a column with relative numbers - something we could do in the future. Example: perf trace -s find /some/folder > /dev/null Summary of events: find (19976), 700123 events, 100.0%, 0.000 msec syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- --------- ------ read 4 0.006 0.001 0.002 0.003 27.42% write 8046 9.617 0.001 0.001 0.035 0.56% open 34196 40.384 0.001 0.001 0.071 0.30% close 68375 57.104 0.001 0.001 0.076 0.25% stat 4 0.004 0.001 0.001 0.001 3.14% fstat 34189 27.518 0.001 0.001 0.060 0.34% mmap 13 0.029 0.001 0.002 0.003 10.74% mprotect 6 0.018 0.002 0.003 0.005 17.04% munmap 3 0.014 0.003 0.005 0.006 24.87% brk 87 0.490 0.001 0.006 0.016 6.50% ioctl 3 0.004 0.001 0.001 0.003 36.39% access 1 0.004 0.004 0.004 0.004 0.00% uname 1 0.001 0.001 0.001 0.001 0.00% getdents 68393 143.600 0.001 0.002 0.187 0.95% fchdir 68371 56.980 0.001 0.001 0.111 0.39% arch_prctl 1 0.001 0.001 0.001 0.001 0.00% openat 34184 41.737 0.001 0.001 0.102 0.41% newfstatat 34184 41.180 0.001 0.001 0.064 0.34% Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> LPU-Reference: 1438853069-5902-1-git-send-email-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Fix build errors with mipsel-linux-uclibc compilerPetri Gynther2015-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linux/tools$ make ARCH=mips CROSS_COMPILE=mipsel-linux- perf ... config/Makefile:256: *** No gnu/libc-version.h found, please install glibc-dev[el]. Stop. make[1]: *** [all] Error 2 make: *** [perf] Error 2 ... In file included from builtin-sched.c:13:0: util/cloexec.h:8:12: error: redundant redeclaration of ‘sched_getcpu’ [-Werror=redundant-decls] extern int sched_getcpu(void) __THROW; mipsel-buildroot-linux-uclibc/sysroot/usr/include/bits/sched.h:88:12: note: previous declaration of ‘sched_getcpu’ was here extern int sched_getcpu (void) __THROW; uclibc info: sysroot/usr/include/bits/uClibc_config.h __UCLIBC_MAJOR__ 0 __UCLIBC_MINOR__ 9 __UCLIBC_SUBLEVEL__ 33 sysroot/usr/include/features.h __UCLIBC__ 1 __GLIBC__ 2 __GLIBC_MINOR__ 2 Signed-off-by: Petri Gynther <pgynther@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1438735081-24131-1-git-send-email-pgynther@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf trace: Write to stderr by defaultMilian Wolff2015-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch, it is cumbersome to read the trace output but ignoring the normal, potentially verbose, output of the debuggee. One common example is doing something like the following: perf trace -s find /tmp > /dev/null Without this patch, the trace summary will be lost. Now, it will still be printed at the end. This behavior is also applied by strace. Cc: Milian Wolff <milian.wolff@kdab.com> Cc: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/n/tip-tqnks6y2cnvm5f9g2dsfr7zl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-22 11:06:26 +0000