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* Merge tag 'perf-core-for-mingo-5.1-20190307' of ↵Ingo Molnar2019-03-0923-107/+248
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 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 Melo2019-03-062-31/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 db-export: Add calls parent_id to enable creation of call treesAdrian Hunter2019-03-015-13/+35
| | | | | | | | | | | | | | | | | | | | | | The call_path can be used to find the parent symbol for a call but not the exact parent call. To do that add parent_id to the call_return export. This enables the creation of a call tree from the exported data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lkml.kernel.org/n/tip-6j7tzdxo67cox6kan7k22oo6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf intel-pt: Fix divide by zero when TSC is not availableAdrian Hunter2019-03-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | When TSC is not available, "timeless" decoding is used but a divide by zero occurs if perf_time_to_tsc() is called. Ensure the divisor is not zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.9+ Link: https://lkml.kernel.org/n/tip-1i4j0wqoc8vlbkcizqqxpsf4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf auxtrace: Improve address filter error message when there is no DSOAdrian Hunter2019-03-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The message does not indicate the possibility that the symbol is not found because the file does not exist. Before: $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls Symbol 'strcmp' not found. Note that symbols must be functions. Failed to parse address filter: 'filter strcmp / strcpy @ foo ' Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>] Where multiple filters are separated by space or comma. After: $ perf record -e intel_pt//u --filter 'filter strcmp / strcpy @ foo ' ls File 'foo' not found or has no symbols. Symbol 'strcmp' not found. Note that symbols must be functions. Failed to parse address filter: 'filter strcmp / strcpy @ foo ' Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>] Where multiple filters are separated by space or comma. Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lkml.kernel.org/n/tip-dvngzxd0jkplzw1ary69dilb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf time-utils: Refactor time range parsing codeJin Yao2019-03-012-1/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jiri points out that we don't need any time checking and time string parsing if the --time option is not set. That makes sense. This patch refactors the time range parsing code, move the duplicated code from perf report and perf script to time_utils and check if --time option is set before parsing the time string. This patch is no logic change expected. So the usage of --time is same as before. For example: Select the first and second 10% time slices: perf report --time 10%/1,10%/2 perf script --time 10%/1,10%/2 Select the slices from 0% to 10% and from 30% to 40%: perf report --time 0%-10%,30%-40% perf script --time 0%-10%,30%-40% Select the time slices from timestamp 3971 to 3973 perf report --time 3971,3973 perf script --time 3971,3973 Committer testing: Using the above examples, check before and after to see if it remains the same: $ perf record -F 10000 -- find . -name "*.[ch]" -exec cat {} + > /dev/null [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 1.626 MB perf.data (42392 samples) ] $ $ perf report --time 10%/1,10%/2 > /tmp/report.before.1 $ perf script --time 10%/1,10%/2 > /tmp/script.before.1 $ perf report --time 0%-10%,30%-40% > /tmp/report.before.2 $ perf script --time 0%-10%,30%-40% > /tmp/script.before.2 $ perf report --time 180457.375844,180457.377717 > /tmp/report.before.3 $ perf script --time 180457.375844,180457.377717 > /tmp/script.before.3 For example, the 3rd test produces this slice: $ cat /tmp/script.before.3 cat 3147 180457.375844: 2143 cycles:uppp: 7f79362590d9 cfree@GLIBC_2.2.5+0x9 (/usr/lib64/libc-2.28.so) cat 3147 180457.375986: 2245 cycles:uppp: 558b70f3d86e [unknown] (/usr/bin/cat) cat 3147 180457.376012: 2164 cycles:uppp: 7f7936257430 _int_malloc+0x8c0 (/usr/lib64/libc-2.28.so) cat 3147 180457.376140: 2921 cycles:uppp: 558b70f3a554 [unknown] (/usr/bin/cat) cat 3147 180457.376296: 2844 cycles:uppp: 7f7936258abe malloc+0x4e (/usr/lib64/libc-2.28.so) cat 3147 180457.376431: 2717 cycles:uppp: 558b70f3b0ca [unknown] (/usr/bin/cat) cat 3147 180457.376667: 2630 cycles:uppp: 558b70f3d86e [unknown] (/usr/bin/cat) cat 3147 180457.376795: 2442 cycles:uppp: 7f79362bff55 read+0x15 (/usr/lib64/libc-2.28.so) cat 3147 180457.376927: 2376 cycles:uppp: ffffffff9aa00163 [unknown] ([unknown]) cat 3147 180457.376954: 2307 cycles:uppp: 7f7936257438 _int_malloc+0x8c8 (/usr/lib64/libc-2.28.so) cat 3147 180457.377116: 3091 cycles:uppp: 7f7936258a70 malloc+0x0 (/usr/lib64/libc-2.28.so) cat 3147 180457.377362: 2945 cycles:uppp: 558b70f3a3b0 [unknown] (/usr/bin/cat) cat 3147 180457.377517: 2727 cycles:uppp: 558b70f3a9aa [unknown] (/usr/bin/cat) $ Install 'coreutils-debuginfo' to see cat's guts (symbols), but then, the above chunk translates into this 'perf report' output: $ cat /tmp/report.before.3 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 13 of event 'cycles:uppp' (time slices: 180457.375844,180457.377717) # Event count (approx.): 33552 # # Overhead Command Shared Object Symbol # ........ ....... ................ ...................... # 17.69% cat libc-2.28.so [.] malloc 14.53% cat cat [.] 0x000000000000586e 13.33% cat libc-2.28.so [.] _int_malloc 8.78% cat cat [.] 0x00000000000023b0 8.71% cat cat [.] 0x0000000000002554 8.13% cat cat [.] 0x00000000000029aa 8.10% cat cat [.] 0x00000000000030ca 7.28% cat libc-2.28.so [.] read 7.08% cat [unknown] [k] 0xffffffff9aa00163 6.39% cat libc-2.28.so [.] cfree@GLIBC_2.2.5 # # (Tip: Order by the overhead of source file name and line number: perf report -s srcline) # $ Now lets see after applying this patch, nothing should change: $ perf report --time 10%/1,10%/2 > /tmp/report.after.1 $ perf script --time 10%/1,10%/2 > /tmp/script.after.1 $ perf report --time 0%-10%,30%-40% > /tmp/report.after.2 $ perf script --time 0%-10%,30%-40% > /tmp/script.after.2 $ perf report --time 180457.375844,180457.377717 > /tmp/report.after.3 $ perf script --time 180457.375844,180457.377717 > /tmp/script.after.3 $ diff -u /tmp/report.before.1 /tmp/report.after.1 $ diff -u /tmp/script.before.1 /tmp/script.after.1 $ diff -u /tmp/report.before.2 /tmp/report.after.2 --- /tmp/report.before.2 2019-03-01 11:01:53.526094883 -0300 +++ /tmp/report.after.2 2019-03-01 11:09:18.231770467 -0300 @@ -352,5 +352,5 @@ # -# (Tip: Generate a script for your data: perf script -g <lang>) +# (Tip: Treat branches as callchains: perf report --branch-history) # $ diff -u /tmp/script.before.2 /tmp/script.after.2 $ diff -u /tmp/report.before.3 /tmp/report.after.3 --- /tmp/report.before.3 2019-03-01 11:03:08.890045588 -0300 +++ /tmp/report.after.3 2019-03-01 11:09:40.660224002 -0300 @@ -22,5 +22,5 @@ # -# (Tip: Order by the overhead of source file name and line number: perf report -s srcline) +# (Tip: List events using substring match: perf list <keyword>) # $ diff -u /tmp/script.before.3 /tmp/script.after.3 $ Cool, just the 'perf report' tips changed, QED. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1551435186-6008-1-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Clarify error message about not finding kernel modules debuginfoArnaldo Carvalho de Melo2019-02-281-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'perf probe' supports using just the kernel module name, but that will work only when the module is loaded, or using the full pathname to the file with the DWARF debug info, but the warning was cryptic: Before: # perf probe -m cls_flower -L fl_change Failed to find the path for cls_flower: No such file or directory Error: Failed to show lines. # After: # perf probe -m cls_flower -L fl_change Module cls_flower is not loaded, please specify its full path name. Error: Failed to show lines. # perf probe -m /lib/modules/5.0.0-rc7+/kernel/net/sched/cls_flower.ko -L fl_change | head -7 <fl_change@/home/acme/git/linux/net/sched/cls_flower.c:0> 0 static int fl_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, void **arg, bool ovr, struct netlink_ext_ack *extack) 4 { 5 struct cls_fl_head *head = rtnl_dereference(tp->root); # The behaviour doesn't change when the module is loaded: # modprobe cls_flower # perf probe -m cls_flower -L fl_change | head -7 <fl_change@/home/acme/git/linux/net/sched/cls_flower.c:0> 0 static int fl_change(struct net *net, struct sk_buff *in_skb, struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, void **arg, bool ovr, struct netlink_ext_ack *extack) 4 { 5 struct cls_fl_head *head = rtnl_dereference(tp->root); # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Marcelo Ricardo Leitner <mleitner@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-q4njvk9mshra00jacqjbzfn5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2019-03-06115-1402/+3719
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "Lots of tooling updates - too many to list, here's a few highlights: - Various subcommand updates to 'perf trace', 'perf report', 'perf record', 'perf annotate', 'perf script', 'perf test', etc. - CPU and NUMA topology and affinity handling improvements, - HW tracing and HW support updates: - Intel PT updates - ARM CoreSight updates - vendor HW event updates - BPF updates - Tons of infrastructure updates, both on the build system and the library support side - Documentation updates. - ... and lots of other changes, see the changelog for details. Kernel side updates: - Tighten up kprobes blacklist handling, reduce the number of places where developers can install a kprobe and hang/crash the system. - Fix/enhance vma address filter handling. - Various PMU driver updates, small fixes and additions. - refcount_t conversions - BPF updates - error code propagation enhancements - misc other changes" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (238 commits) perf script python: Add Python3 support to syscall-counts-by-pid.py perf script python: Add Python3 support to syscall-counts.py perf script python: Add Python3 support to stat-cpi.py perf script python: Add Python3 support to stackcollapse.py perf script python: Add Python3 support to sctop.py perf script python: Add Python3 support to powerpc-hcalls.py perf script python: Add Python3 support to net_dropmonitor.py perf script python: Add Python3 support to mem-phys-addr.py perf script python: Add Python3 support to failed-syscalls-by-pid.py perf script python: Add Python3 support to netdev-times.py perf tools: Add perf_exe() helper to find perf binary perf script: Handle missing fields with -F +.. perf data: Add perf_data__open_dir_data function perf data: Add perf_data__(create_dir|close_dir) functions perf data: Fail check_backup in case of error perf data: Make check_backup work over directories perf tools: Add rm_rf_perf_data function perf tools: Add pattern name checking to rm_rf perf tools: Add depth checking to rm_rf perf data: Add global path holder ...
| * perf tools: Add perf_exe() helper to find perf binaryAndi Kleen2019-02-253-9/+15
| | | | | | | | | | | | | | | | | | | | | | Also convert one existing user. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20190224153722.27020-9-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Add perf_data__open_dir_data functionJiri Olsa2019-02-252-0/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add perf_data__open_dir_data to open files inside 'struct perf_data' path directory: static int perf_data__open_dir(struct perf_data *data); 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/20190224190656.30163-10-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Add perf_data__(create_dir|close_dir) functionsJiri Olsa2019-02-252-0/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add perf_data__create_dir() to create nr files inside 'struct perf_data' path directory: int perf_data__create_dir(struct perf_data *data, int nr); and function to close that data: void perf_data__close_dir(struct perf_data *data); 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/20190224190656.30163-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Fail check_backup in case of errorJiri Olsa2019-02-251-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | And display the error message from removing the old data file: $ perf record ls Can't remove old data: Permission denied (perf.data.old) Perf session creation failed. $ perf record ls Can't remove old data: Unknown file found (perf.data.old) Perf session creation failed. Not sure how to make fail the rename (after we successfully remove the destination file/dir) to show the message, anyway let's have it there. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: 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/20190224190656.30163-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Make check_backup work over directoriesJiri Olsa2019-02-251-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change check_backup() to call rm_rf_perf_data() instead of unlink() to work over directory paths. Also move the call earlier in the code, before we fork for file/dir, so it can backup also directory data. 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/20190224190656.30163-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add rm_rf_perf_data functionJiri Olsa2019-02-252-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To remove perf.data including the directory, with checking on expected files and no other directories inside. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Suggested-by: Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@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/20190224190656.30163-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add pattern name checking to rm_rfJiri Olsa2019-02-251-3/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add pattern argument to rm_rf_depth() (and rename it to rm_rf_depth_pat()) to specify the name pattern files need to match inside the directory. The function fails if we find different file to remove. 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/20190224190656.30163-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add depth checking to rm_rfJiri Olsa2019-02-251-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding depth argument to rm_rf (and renaming it to rm_rf_depth) to specify the depth we will go searching for files to remove. It will be used to specify single depth for perf.data directory removal in following patch. 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/20190224190656.30163-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Add global path holderJiri Olsa2019-02-223-15/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a 'path' member to 'struct perf_data'. It will keep the configured path for the data (const char *). The path in struct perf_data_file is now dynamically allocated (duped) from it. This scheme is useful/used in following patches where struct perf_data::path holds the 'configure' directory path and struct perf_data_file::path holds the allocated path for specific files. Also it actually makes the code little simpler. 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/20190221094145.9151-3-jolsa@kernel.org [ Fixup data-convert-bt.c missing conversion ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf data: Move size to struct perf_data_fileJiri Olsa2019-02-222-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are about to add support for multiple files, so we need each file to keep its size. 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/20190221094145.9151-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf thread-stack: Hide x86 retpolinesAdrian Hunter2019-02-221-3/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86 retpoline functions pollute the call graph by showing up everywhere there is an indirect branch, but they do not really mean anything. Make changes so that the default retpoline functions will no longer appear in the call graph. Note this only affects the call graph, since all the original branches are left unchanged. This does not handle function return thunks, nor is there any improvement for the handling of inline thunks or extern thunks. Example: $ cat simple-retpoline.c __attribute__((noinline)) int bar(void) { return -1; } int foo(void) { return bar() + 1; } __attribute__((indirect_branch("thunk"))) int main() { int (*volatile fn)(void) = foo; fn(); return fn(); } $ gcc -ggdb3 -Wall -Wextra -O2 -o simple-retpoline simple-retpoline.c $ objdump -d simple-retpoline <SNIP> 0000000000001040 <main>: 1040: 48 83 ec 18 sub $0x18,%rsp 1044: 48 8d 05 25 01 00 00 lea 0x125(%rip),%rax # 1170 <foo> 104b: 48 89 44 24 08 mov %rax,0x8(%rsp) 1050: 48 8b 44 24 08 mov 0x8(%rsp),%rax 1055: e8 1f 01 00 00 callq 1179 <__x86_indirect_thunk_rax> 105a: 48 8b 44 24 08 mov 0x8(%rsp),%rax 105f: 48 83 c4 18 add $0x18,%rsp 1063: e9 11 01 00 00 jmpq 1179 <__x86_indirect_thunk_rax> <SNIP> 0000000000001160 <bar>: 1160: b8 ff ff ff ff mov $0xffffffff,%eax 1165: c3 retq <SNIP> 0000000000001170 <foo>: 1170: e8 eb ff ff ff callq 1160 <bar> 1175: 83 c0 01 add $0x1,%eax 1178: c3 retq 0000000000001179 <__x86_indirect_thunk_rax>: 1179: e8 07 00 00 00 callq 1185 <__x86_indirect_thunk_rax+0xc> 117e: f3 90 pause 1180: 0f ae e8 lfence 1183: eb f9 jmp 117e <__x86_indirect_thunk_rax+0x5> 1185: 48 89 04 24 mov %rax,(%rsp) 1189: c3 retq <SNIP> $ perf record -o simple-retpoline.perf.data -e intel_pt/cyc/u ./simple-retpoline [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0,017 MB simple-retpoline.perf.data ] $ perf script -i simple-retpoline.perf.data --itrace=be -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py simple-retpoline.db branches calls 2019-01-08 14:03:37.851655 Creating database... 2019-01-08 14:03:37.863256 Writing records... 2019-01-08 14:03:38.069750 Adding indexes 2019-01-08 14:03:38.078799 Done $ ~/libexec/perf-core/scripts/python/exported-sql-viewer.py simple-retpoline.db Before: main -> __x86_indirect_thunk_rax -> __x86_indirect_thunk_rax -> foo -> bar After: main -> foo -> bar Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190109091835.5570-7-adrian.hunter@intel.com [ Remove (sym->name != NULL) test, this is not a pointer and breaks the build with clang version 7.0.1 (Fedora 7.0.1-2.fc30) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf thread-stack: Improve thread_stack__no_call_return()Adrian Hunter2019-02-221-3/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve thread_stack__no_call_return() to better handle 'returns' that do not match the stack i.e. 'no call'. See code comments for details. The example below shows how retpolines are affected: Example: $ cat simple-retpoline.c __attribute__((noinline)) int bar(void) { return -1; } int foo(void) { return bar() + 1; } __attribute__((indirect_branch("thunk"))) int main() { int (*volatile fn)(void) = foo; fn(); return fn(); } $ gcc -ggdb3 -Wall -Wextra -O2 -o simple-retpoline simple-retpoline.c $ objdump -d simple-retpoline <SNIP> 0000000000001040 <main>: 1040: 48 83 ec 18 sub $0x18,%rsp 1044: 48 8d 05 25 01 00 00 lea 0x125(%rip),%rax # 1170 <foo> 104b: 48 89 44 24 08 mov %rax,0x8(%rsp) 1050: 48 8b 44 24 08 mov 0x8(%rsp),%rax 1055: e8 1f 01 00 00 callq 1179 <__x86_indirect_thunk_rax> 105a: 48 8b 44 24 08 mov 0x8(%rsp),%rax 105f: 48 83 c4 18 add $0x18,%rsp 1063: e9 11 01 00 00 jmpq 1179 <__x86_indirect_thunk_rax> <SNIP> 0000000000001160 <bar>: 1160: b8 ff ff ff ff mov $0xffffffff,%eax 1165: c3 retq <SNIP> 0000000000001170 <foo>: 1170: e8 eb ff ff ff callq 1160 <bar> 1175: 83 c0 01 add $0x1,%eax 1178: c3 retq 0000000000001179 <__x86_indirect_thunk_rax>: 1179: e8 07 00 00 00 callq 1185 <__x86_indirect_thunk_rax+0xc> 117e: f3 90 pause 1180: 0f ae e8 lfence 1183: eb f9 jmp 117e <__x86_indirect_thunk_rax+0x5> 1185: 48 89 04 24 mov %rax,(%rsp) 1189: c3 retq <SNIP> $ perf record -o simple-retpoline.perf.data -e intel_pt/cyc/u ./simple-retpoline [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0,017 MB simple-retpoline.perf.data ] $ perf script -i simple-retpoline.perf.data --itrace=be -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py simple-retpoline.db branches calls 2019-01-08 14:03:37.851655 Creating database... 2019-01-08 14:03:37.863256 Writing records... 2019-01-08 14:03:38.069750 Adding indexes 2019-01-08 14:03:38.078799 Done $ ~/libexec/perf-core/scripts/python/exported-sql-viewer.py simple-retpoline.db Before: main -> __x86_indirect_thunk_rax -> __x86_indirect_thunk_rax -> __x86_indirect_thunk_rax -> bar After: main -> __x86_indirect_thunk_rax -> __x86_indirect_thunk_rax -> foo -> bar Committer testing: Chose "Reports", Then "Context-Sensitive Call Graph" and then go on expanding: Before: simple-retpolin PID:PID _start _start __libc_start_main main __x86_indirect_thunk_rax __x86_indirect_thunk_rax bar After: Remove the "simple.retpoline.db" file, run again the 'perf script' line to regenerate the .db file and run the exported-sql-viewer.py again to get the same all the way to 'main', then, from there, including 'main': main __x86_indirect_thunk_rax __x86_indirect_thunk_rax foo bar Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20190109091835.5570-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate: Fix getting source line failureWei Li2019-02-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The output of "perf annotate -l --stdio xxx" changed since commit 425859ff0de33 ("perf annotate: No need to calculate notes->start twice") removed notes->start assignment in symbol__calc_lines(). It will get failed in find_address_in_section() from symbol__tty_annotate() subroutine as the a2l->addr is wrong. So the annotate summary doesn't report the line number of source code correctly. Before fix: liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ cat common_while_1.c void hotspot_1(void) { volatile int i; for (i = 0; i < 0x10000000; i++); for (i = 0; i < 0x10000000; i++); for (i = 0; i < 0x10000000; i++); } int main(void) { hotspot_1(); return 0; } liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ gcc common_while_1.c -g -o common_while_1 liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf record ./common_while_1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.488 MB perf.data (12498 samples) ] liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf annotate -l -s hotspot_1 --stdio Sorted summary for file /home/liwei/main_code/hulk_work/hulk/tools/perf/common_while_1 ---------------------------------------------- 19.30 common_while_1[32] 19.03 common_while_1[4e] 19.01 common_while_1[16] 5.04 common_while_1[13] 4.99 common_while_1[4b] 4.78 common_while_1[2c] 4.77 common_while_1[10] 4.66 common_while_1[2f] 4.59 common_while_1[51] 4.59 common_while_1[35] 4.52 common_while_1[19] 4.20 common_while_1[56] 0.51 common_while_1[48] Percent | Source code & Disassembly of common_while_1 for cycles:ppp (12480 samples, percent: local period) ----------------------------------------------------------------------------------------------------------------- : : : : Disassembly of section .text: : : 00000000000005fa <hotspot_1>: : hotspot_1(): : void hotspot_1(void) : { 0.00 : 5fa: push %rbp 0.00 : 5fb: mov %rsp,%rbp : volatile int i; : : for (i = 0; i < 0x10000000; i++); 0.00 : 5fe: movl $0x0,-0x4(%rbp) 0.00 : 605: jmp 610 <hotspot_1+0x16> 0.00 : 607: mov -0x4(%rbp),%eax common_while_1[10] 4.77 : 60a: add $0x1,%eax common_while_1[13] 5.04 : 60d: mov %eax,-0x4(%rbp) common_while_1[16] 19.01 : 610: mov -0x4(%rbp),%eax common_while_1[19] 4.52 : 613: cmp $0xfffffff,%eax 0.00 : 618: jle 607 <hotspot_1+0xd> : for (i = 0; i < 0x10000000; i++); ... After fix: liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf record ./common_while_1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.488 MB perf.data (12500 samples) ] liwei@euler:~/main_code/hulk_work/hulk/tools/perf$ sudo ./perf annotate -l -s hotspot_1 --stdio Sorted summary for file /home/liwei/main_code/hulk_work/hulk/tools/perf/common_while_1 ---------------------------------------------- 33.34 common_while_1.c:5 33.34 common_while_1.c:6 33.32 common_while_1.c:7 Percent | Source code & Disassembly of common_while_1 for cycles:ppp (12482 samples, percent: local period) ----------------------------------------------------------------------------------------------------------------- : : : : Disassembly of section .text: : : 00000000000005fa <hotspot_1>: : hotspot_1(): : void hotspot_1(void) : { 0.00 : 5fa: push %rbp 0.00 : 5fb: mov %rsp,%rbp : volatile int i; : : for (i = 0; i < 0x10000000; i++); 0.00 : 5fe: movl $0x0,-0x4(%rbp) 0.00 : 605: jmp 610 <hotspot_1+0x16> 0.00 : 607: mov -0x4(%rbp),%eax common_while_1.c:5 4.70 : 60a: add $0x1,%eax 4.89 : 60d: mov %eax,-0x4(%rbp) common_while_1.c:5 19.03 : 610: mov -0x4(%rbp),%eax common_while_1.c:5 4.72 : 613: cmp $0xfffffff,%eax 0.00 : 618: jle 607 <hotspot_1+0xd> : for (i = 0; i < 0x10000000; i++); 0.00 : 61a: movl $0x0,-0x4(%rbp) 0.00 : 621: jmp 62c <hotspot_1+0x32> 0.00 : 623: mov -0x4(%rbp),%eax common_while_1.c:6 4.54 : 626: add $0x1,%eax 4.73 : 629: mov %eax,-0x4(%rbp) common_while_1.c:6 19.54 : 62c: mov -0x4(%rbp),%eax common_while_1.c:6 4.54 : 62f: cmp $0xfffffff,%eax ... Signed-off-by: Wei Li <liwei391@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 425859ff0de33 ("perf annotate: No need to calculate notes->start twice") Link: http://lkml.kernel.org/r/20190221095716.39529-1-liwei391@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Make rm_rf() remove single fileJiri Olsa2019-02-201-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Let rm_rf() remove a file if it's provided by path, not just directories. Signed-off-by: Jiri Olsa <jolsa@kernel.org> 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> Link: http://lkml.kernel.org/r/20190220122800.864-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cpumap: Increase debug level for cpu_map__snprint verbose outputJiri Olsa2019-02-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | So it does not screw up single -v verbose output. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190220122800.864-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf bpf-event: Add missing new line into pr_debug callJiri Olsa2019-02-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a missing new line into pr_debug call in perf_event__synthesize_bpf_events(), so that the error message does not screw the verbose output. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lkml.kernel.org/r/20190220122800.864-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf evsel: Force sample_type for slave eventsJiri Olsa2019-02-201-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Force sample_type setup for slave events in group leader sessions. We don't get sample for slave events, we make them when delivering group leader sample. Set the slave event to follow the master sample_type to ease up report. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190220122800.864-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf session: Don't report zero period samples for slave eventsJiri Olsa2019-02-201-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | There's no reason to deliver a sample with zero period. It means there was no value for slave event since its last group leader sample. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190220122800.864-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf bpf: Add bpf_map dumperArnaldo Carvalho de Melo2019-02-193-0/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At some point I'll suggest moving this to libbpf, for now I'll experiment with ways to dump BPF maps set by events in 'perf trace', starting with a very basic dumper for the current very limited needs of the augmented_raw_syscalls code: dumping booleans. Having functions that apply to the map keys and values and do table lookup in things like syscall id to string tables should come next. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-lz14w0esqyt1333aon05jpwc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Don't shadow inlined symbol with different addr rangeHe Kuang2019-02-192-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't assume inlined symbols with the same name are equal, because their address range may be different. This will cause the symbols with different addresses be shadowed when adding to the hist entry, and lead to ERANGE error when checking the symbol address during sample parse, the addr should be within the range of [sym.start, sym.end]. The error message is like: "0x36aea60 [0x8]: failed to process type: 68". The second parameter of symbol__new() is the length of the fake symbol for the inline frame, which is the subtraction of the end and start address of base_sym. Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: aa441895f7b4 ("perf report: Compare symbol name for inlined frames when sorting") Link: http://lkml.kernel.org/r/20190219130531.15692-1-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Use sysfs__mountpoint() when reading cpu topologyJiri Olsa2019-02-191-7/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Use sysfs__mountpoint() when reading sysfs files to obtain cpu/numa topologies. Also use scnprintf instead of sprintf as suggested by Namhyung. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190219095815.15931-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add numa_topology objectJiri Olsa2019-02-193-93/+160
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the numa_topology object to return the list of numa nodes together with their cpus. It will replace the numa code in header.c and will be used from 'perf record' in the following patches. Add the following interface functions to load numa details: struct numa_topology *numa_topology__new(void); void numa_topology__delete(struct numa_topology *tp); And replace the current (copied) local interface, with no functional changes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190219095815.15931-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add cpu_topology objectJiri Olsa2019-02-194-146/+166
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make struct cpu_topo global and rename it to 'struct cpu_topology', so that it can be used from the 'perf record' command in the following patches. Add the following interface functions to load/free cpu topology details: struct cpu_topology *cpu_topology__new(void); void cpu_topology__delete(struct cpu_topology *tp); Move it to a separate source file cputopo.c together with numa related object in the following patches. No functional change, the new interface will be used in upcoming changes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190219095815.15931-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf header: Fix wrong node write in NUMA_TOPOLOGY featureJiri Olsa2019-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | We are currently passing the node index instead of the real node number. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: fbe96f29ce4b ("perf tools: Make perf.data more self-descriptive (v8)" Link: http://lkml.kernel.org/r/20190219095815.15931-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf header: Remove unused 'cpu_nr' field from 'struct cpu_topo'Jiri Olsa2019-02-141-2/+0
| | | | | | | | | | | | | | | | | | | | | | Not used at all. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190213123246.4015-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf header: Get rid of write_it labelJiri Olsa2019-02-141-4/+2
| | | | | | | | | | | | | | | | | | | | | | Simplifying the code a bit. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190213123246.4015-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf list: Display metric expressions for --details optionJiri Olsa2019-02-143-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Display metric expression itself when --details is specified. Current list with no details: # perf list metrics ... TopDownL1: IPC [Instructions Per Cycle (per logical thread)] SLOTS [Total issue-pipeline slots] ... Detailed output with metric formula: # perf list --details metrics ... TopDownL1: IPC [Instructions Per Cycle (per logical thread)] [inst_retired.any / cpu_clk_unhalted.thread] SLOTS [Total issue-pipeline slots] [4*(( cpu_clk_unhalted.thread_any / 2 ) if #smt_on else cycles)] ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190213123246.4015-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix legacy events symbol separator parsingJiri Olsa2019-02-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixing legacy symbol events parsing. We can't support single slash separator, like 'cycles/u', because it conflicts with non empty terms, like 'cycles/period/u'. Keeping only '//' and ':' separator for these events: cycles//u cycles:k And removing '/' separator support, which is not working anymore. Also adding automated tests for above events. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190213123246.4015-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Rename build libperf to perfJiri Olsa2019-02-145-144/+144
| | | | | | | | | | | | | | | | | | | | | | | | | | Rename build libperf to perf, because it's used to build perf. The libperf build object name will be used for libperf library. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190213123246.4015-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cs-etm: Modularize auxtrace_buffer fetch functionMathieu Poirier2019-02-141-12/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Making the auxtrace_buffer fetch function modular so that it can be called from different decoding context (timeless vs. non-timeless), avoiding to repeat code. No change in functionality is introduced by this patch. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190212171618.25355-14-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cs-etm: Modularize main packet processing loopMathieu Poirier2019-02-141-57/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Making the main packet processing loop modular so that it can be called from different decoding context (timeless vs. non-timless), avoiding to repeat code. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190212171618.25355-13-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cs-etm: Modularize main decoder functionMathieu Poirier2019-02-141-12/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Making the main decoder block modular so that it can be called from different decoding context (timeless vs. non-timeless), avoiding to repeat code. No change in functionality is introduced by this patch. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190212171618.25355-12-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cs-etm: Make cs_etm__run_decoder() queue independentMathieu Poirier2019-02-142-33/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes decoding of auxtrace buffer centered around a struct cs_etm_queue. This eliminates surperflous variables and is a precursor for work that simplifies the main decoder loop. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190212171618.25355-11-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf cs-etm: Rethink kernel address initialisationMathieu Poirier2019-02-141-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Moving initialisation of the kernel start address to function cs_etm__setup_queues(), considered to be the common denominator for queue initialisation. That way we don't have to repeat the same code at different places. No change of functionatlity is introduced by this patch. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190212171618.25355-10-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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