summaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAgeFilesLines
* perf top: Add processing threadJiri Olsa2018-12-174-62/+151
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new thread that takes care of the hist creating to alleviate the main reader thread so it can keep perf mmaps served in time so that we reduce the possibility of losing events. The 'perf top' command now spawns 2 extra threads, the data processing is the following: 1) The main thread reads the data from mmaps and queues them to ordered events object; 2) The processing threads takes the data from the ordered events object and create initial histogram; 3) The GUI thread periodically sorts the initial histogram and presents it. Passing the data between threads 1 and 2 is done by having 2 ordered events queues. One is always being stored by thread 1 while the other is flushed out in thread 2. Passing the data between threads 2 and 3 stays the same as was initially for threads 1 and 3. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-hhf4hllgkmle9wl1aly1jli0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf top: Move lost events warning to helplineJiri Olsa2018-12-171-11/+5
| | | | | | | | | | | | | | | | | We can't display the UI box saying that we are slow in the reader thread. That will make 'perf top' even slower and the user even more angry ;-) Move the UI box message from the reader thread to the UI thread and change it to a helpline, so there's no need to 'press any key'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/n/tip-x4k0iuw7tt6mywsaguq6jfwu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf top: Save and display the lost count statsJiri Olsa2018-12-174-4/+35
| | | | | | | | | | | | | | | | | | | | | Add a 'lost count' to 'perf top' headers: # perf top --stdio PerfTop: 3850 irqs/sec kernel:49.0% exact: 100.0% lost: 0/0 [4000Hz cycles:ppp], (all, 8 CPUs) # perf top Samples: 0 of event 'cycles:ppp', 4000 Hz, Event count (approx.): 0 lost: 0/0 The format is: <current period lost>/<total lost> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/n/tip-zo11rn270gij5jtp8fknpf8u@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ordered_events: Add private data memberJiri Olsa2018-12-173-4/+9
| | | | | | | | | | | | | We will need it in following patch, where we can't use the container_of() trick to get the higher level object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> 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/n/tip-vgs9aoek21v14o3obza586yy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ordered_events: Rework show_progress for __ordered_events__flushJiri Olsa2018-12-171-3/+5
| | | | | | | | | | | | | Decide to use the progress bar one level higher, we will need this in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> 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/n/tip-ocjdukp2a8ujikkmafd0j5zv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Support 'srccode' outputAndi Kleen2018-12-1712-3/+339
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When looking at PT or brstackinsn traces with 'perf script' it can be very useful to see the source code. This adds a simple facility to print them with 'perf script', if the information is available through dwarf % perf record ... % perf script -F insn,ip,sym,srccode ... 4004c6 main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004c6 main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004b3 main 6 v++; % perf record -b ... % perf script -F insn,ip,sym,srccode,brstackinsn ... main+22: 0000000000400543 insn: e8 ca ff ff ff # PRED |18 f1(); f1: 0000000000400512 insn: 55 |10 { 0000000000400513 insn: 48 89 e5 0000000000400516 insn: b8 00 00 00 00 |11 f2(); 000000000040051b insn: e8 d6 ff ff ff # PRED f2: 00000000004004f6 insn: 55 |5 { 00000000004004f7 insn: 48 89 e5 00000000004004fa insn: 8b 05 2c 0b 20 00 |6 c = a / b; 0000000000400500 insn: 8b 0d 2a 0b 20 00 0000000000400506 insn: 99 0000000000400507 insn: f7 f9 0000000000400509 insn: 89 05 29 0b 20 00 000000000040050f insn: 90 |7 } 0000000000400510 insn: 5d 0000000000400511 insn: c3 # PRED f1+14: 0000000000400520 insn: b8 00 00 00 00 |12 f2(); 0000000000400525 insn: e8 cc ff ff ff # PRED f2: 00000000004004f6 insn: 55 |5 { 00000000004004f7 insn: 48 89 e5 00000000004004fa insn: 8b 05 2c 0b 20 00 |6 c = a / b; Not supported for callchains currently, would need some layout changes there. Committer notes: Fixed the build on Alpine Linux (3.4 .. 3.8) by addressing this warning: In file included from util/srccode.c:19:0: /usr/include/sys/fcntl.h:1:2: error: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Werror=cpp] #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> ^~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20181204001848.24769-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf trace: We need to consider "nr" if "__syscall_nr" is not thereArnaldo Carvalho de Melo2018-12-171-1/+2
| | | | | | | | | | | | | | | | | To cope with older kernels that don't have this patch backported: 026842d148b9 ("tracing/syscalls: Rename "/format" tracepoint field name "nr" to "__syscall_nr:") This makes 'perf trace' work again in RHEL7 kernels. Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-6h1syw2isegnhb1bjmtr9x9k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Allow specifying proc-map-timeout in config fileMark Drayton2018-12-1714-50/+39
| | | | | | | | | | | | | | | | | | | | The default timeout of 500ms for parsing /proc/<pid>/maps files is too short for profiling many of our services. This can be overridden by passing --proc-map-timeout to the relevant command but it'd be nice to globally increase our default value. This patch permits setting a different default with the core.proc-map-timeout config file parameter. Signed-off-by: Mark Drayton <mbd@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181204203420.1683114-1-mbd@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib subcmd: Fix a few source code comment typosIngo Molnar2018-12-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry-picking and/or backporting, split this into multiple patches. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix diverse comment typosIngo Molnar2018-12-1711-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry-picking and/or backporting, split this into multiple patches. Just typos in comments, no need to backport, reducing the possibility of possible backporting artifacts. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf bpf-loader: Fix debugging message typoIngo Molnar2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry picking and/or backporting, split this into multiple patches. This one has information that is presented to the user, albeit in debug mode. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools Documentation: Fix diverse typosIngo Molnar2018-12-173-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry picking and/or backporting, split this into multiple patches. In this particular case, it affects documentation, so may be interesting to cherry pick as it is information that is presented to the user. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Fix diverse typos in commentsIngo Molnar2018-12-172-7/+7
| | | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry picking and/or backporting, split this into multiple patches. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Tzvetomir Stoyanov <tstoyanov@vmware.com> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf vendor events intel: Fix diverse typosIngo Molnar2018-12-1712-36/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. ( Care should be taken not to re-import these typos in the future, if the JSON files get updated by the vendor without fixing the typos. ) No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry picking and/or backporting, split this into multiple patches. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests ARM: Disable breakpoint tests 32-bitFlorian Fainelli2018-12-171-6/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | The breakpoint tests on the ARM 32-bit kernel are broken in several ways. The breakpoint length requested does not necessarily match whether the function address has the Thumb bit (bit 0) set or not, and this does matter to the ARM kernel hw_breakpoint infrastructure. See [1] for background. [1]: https://lkml.org/lkml/2018/11/15/205 As Will indicated, the overflow handling would require single-stepping which is not supported at the moment. Just disable those tests for the ARM 32-bit platforms and update the comment above to explain these limitations. Co-developed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Jiri Olsa <jolsa@redhat.com> 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/20181203191138.2419-1-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf cs-etm: Support for ARM A32/T32 instruction sets in CoreSight traceRobert Walker2018-12-174-39/+78
| | | | | | | | | | | | | | | | | | | | | | This patch adds support for generating instruction samples from trace of AArch32 programs using the A32 and T32 instruction sets. T32 has variable 2 or 4 byte instruction size, so the conversion between addresses and instruction counts requires extra information from the trace decoder, requiring version 0.10.0 of OpenCSD. A check for the OpenCSD library version has been added to the feature check for OpenCSD. Signed-off-by: Robert Walker <robert.walker@arm.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> 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: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1543839526-30348-1-git-send-email-robert.walker@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf beauty mmap_flags: Fixed syntax error Fixed missing ']' errorSihyeon Jang2018-12-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Committer testing: Before: # tools/perf/trace/beauty/mmap_flags.sh static const char *mmap_flags[] = { [ilog2(0x40) + 1] = "32BIT", tools/perf/trace/beauty/mmap_flags.sh: line 23: [: missing `]' [ilog2(0x01) + 1] = "SHARED", [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x10) + 1] = "FIXED", [ilog2(0x20) + 1] = "ANONYMOUS", [ilog2(0x100000) + 1] = "FIXED_NOREPLACE", tools/perf/trace/beauty/mmap_flags.sh: line 28: [: missing `]' [ilog2(0x0100) + 1] = "GROWSDOWN", [ilog2(0x0800) + 1] = "DENYWRITE", [ilog2(0x1000) + 1] = "EXECUTABLE", [ilog2(0x2000) + 1] = "LOCKED", [ilog2(0x4000) + 1] = "NORESERVE", [ilog2(0x8000) + 1] = "POPULATE", [ilog2(0x10000) + 1] = "NONBLOCK", [ilog2(0x20000) + 1] = "STACK", [ilog2(0x40000) + 1] = "HUGETLB", [ilog2(0x80000) + 1] = "SYNC", }; # After: $ tools/perf/trace/beauty/mmap_flags.sh static const char *mmap_flags[] = { [ilog2(0x40) + 1] = "32BIT", [ilog2(0x01) + 1] = "SHARED", [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x10) + 1] = "FIXED", [ilog2(0x20) + 1] = "ANONYMOUS", [ilog2(0x100000) + 1] = "FIXED_NOREPLACE", [ilog2(0x0100) + 1] = "GROWSDOWN", [ilog2(0x0800) + 1] = "DENYWRITE", [ilog2(0x1000) + 1] = "EXECUTABLE", [ilog2(0x2000) + 1] = "LOCKED", [ilog2(0x4000) + 1] = "NORESERVE", [ilog2(0x8000) + 1] = "POPULATE", [ilog2(0x10000) + 1] = "NONBLOCK", [ilog2(0x20000) + 1] = "STACK", [ilog2(0x40000) + 1] = "HUGETLB", [ilog2(0x80000) + 1] = "SYNC", }; $ Signed-off-by: Sihyeon Jang <uneedsihyeon@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: aca70cc40a0b ("perf beauty mmap_flags: Check if the arch has a mmap.h file") Link: http://lkml.kernel.org/r/20181202080651.4685-1-uneedsihyeon@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: traceevent API cleanupTzvetomir Stoyanov2018-12-174-24/+18
| | | | | | | | | | | | | | | | | | | In order to make libtraceevent into a proper library, its API should be straightforward. This patch hides few API functions, intended for internal usage only: tep_free_event(), tep_free_format_field(), __tep_data2host2(), __tep_data2host4() and __tep_data2host8(). The patch also alignes the libtraceevent summary man page with these API changes. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.891651290@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: traceevent API cleanup, remove __tep_data2host*()Tzvetomir Stoyanov2018-12-171-2/+2
| | | | | | | | | | | | | | | | In order to make libtraceevent into a proper library, its API should be straightforward. The __tep_data2host*() functions are going to no longer be available as a libtraceevent API, tep_read_number() should be used instead. This patch replaces __tep_data2host*() usage with tep_read_number() in perf. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.743979275@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Rename tep_free_format() to tep_free_event()Tzvetomir Stoyanov2018-12-172-4/+4
| | | | | | | | | | | | | | | In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. This renames tep_free_format() to tep_free_event(), which describes more closely the purpose of the function. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.591673556@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent, perf tools: Rename 'struct tep_event_format' to ↵Tzvetomir Stoyanov2018-12-1720-198/+198
| | | | | | | | | | | | | | | | | | | | | 'struct tep_event' In order to make libtraceevent into a proper library, variables, data structures and functions require a unique prefix to prevent name space conflicts. This renames 'struct tep_event_format' to 'struct tep_event', which describes more closely the purpose of the struct. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.436403995@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> [ Fixup conflict with 6e33c250a88f ("tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.c") ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Install trace-seq.h API header fileTzvetomir Stoyanov2018-12-171-1/+2
| | | | | | | | | | | | This patch installs trace-seq.h header file on "make install". Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.176265533@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Added support for pkg-configTzvetomir Stoyanov2018-12-172-3/+33
| | | | | | | | | | | | | | This patch implements integration with pkg-config framework. pkg-config can be used by the library users to determine required CFLAGS and LDFLAGS in order to use the library Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154647.022471992@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Implement new API tep_get_ref()Tzvetomir Stoyanov2018-12-172-0/+8
| | | | | | | | | | | | | | | | | | This patch implements a new API of the tracevent library: int tep_get_ref(struct tep_handle *tep); The API returns the reference counter "ref_count" of the tep handler. As "struct tep_handle" is internal only, its members cannot be accessed by the library users, the API is used to get the reference counter. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154646.890615385@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf report: Documentation average IPC and IPC coverageJin Yao2018-12-171-0/+8
| | | | | | | | | | | | | | | | | | | Add explanations for new columns "IPC" and "IPC coverage" in perf documentation. v5: --- Update the description according to Ingo's comments. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1543586097-27632-5-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf report: Display average IPC and IPC coverage per symbolJin Yao2018-12-174-3/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support displaying the average IPC and IPC coverage per symbol in 'perf report' --tui and --stdio modes. For example, $ perf record -b ... $ perf report -s symbol Overhead Symbol IPC [IPC Coverage] 39.60% [.] __random 2.30 [ 54.8%] 18.02% [.] main 0.43 [ 54.3%] 14.21% [.] compute_flag 2.29 [100.0%] 14.16% [.] rand 0.36 [100.0%] 7.06% [.] __random_r 2.57 [ 70.5%] 6.85% [.] rand@plt 0.00 [ 0.0%] Jiri Olsa <jolsa@redhat.com> provided the patch to support the --stdio mode. I merged Jiri's code in this patch. $ perf report -s symbol --stdio # Overhead Symbol IPC [IPC Coverage] # ........ ........................... .................... # 39.60% [.] __random 2.30 [ 54.8%] 18.02% [.] main 0.43 [ 54.3%] 14.21% [.] compute_flag 2.29 [100.0%] 14.16% [.] rand 0.36 [100.0%] 7.06% [.] __random_r 2.57 [ 70.5%] 6.85% [.] rand@plt 0.00 [ 0.0%] 0.02% [k] run_timer_softirq 1.60 [ 57.2%] The columns "IPC" and "[IPC Coverage]" are automatically enabled when the sort-key "symbol" is specified. If the perf.data file doesn't contain timed LBR information, columns are filled with "-". For example, # Overhead Symbol IPC [IPC Coverage] # ........ ........................... .................... # 46.57% [.] main - - 17.60% [.] rand - - 15.84% [.] __random_r - - 11.90% [.] __random - - 6.50% [.] compute_flag - - 1.59% [.] rand@plt - - 0.00% [.] _dl_relocate_object - - 0.00% [k] tlb_flush_mmu - - 0.00% [k] perf_event_mmap - - 0.00% [k] native_sched_clock - - 0.00% [k] intel_pmu_handle_irq_v4 - - 0.00% [k] native_write_msr - - v3: --- Removed the sortkey 'ipc' from command-line. The columns "IPC" and "[IPC Coverage]" are automatically enabled when "symbol" is specified. v2: --- Merge in Jiri's patch to support stdio mode Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1543586097-27632-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Create a annotate2 flag in struct symbolJin Yao2018-12-172-0/+2
| | | | | | | | | | | | | | | | | We often use the symbol__annotate2() to annotate a specified symbol. While annotating may take some time, so in order to avoid annotating the same symbol repeatedly, the patch creates a new flag to indicate the symbol has been annotated. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1543586097-27632-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Compute average IPC and IPC coverage per symbolJin Yao2018-12-172-3/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to 'perf report' annotate view or 'perf annotate --stdio2' to aggregate the IPC derived from timed LBRs per symbol. We compute the average IPC and the IPC coverage percentage. For example: $ perf annotate --stdio2 Percent IPC Cycle (Average IPC: 2.30, IPC Coverage: 54.8%) Disassembly of section .text: 000000000003aac0 <random@@GLIBC_2.2.5>: 8.32 3.28 sub $0x18,%rsp 3.28 mov $0x1,%esi 3.28 xor %eax,%eax 3.28 cmpl $0x0,argp_program_version_hook@@GLIBC_2.2.5+0x1e0 11.57 3.28 1 ↓ je 20 lock cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0 ↓ jne 29 ↓ jmp 43 11.57 1.10 20: cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0 0.00 1.10 1 ↓ je 43 29: lea __abort_msg@@GLIBC_PRIVATE+0x8a0,%rdi sub $0x80,%rsp → callq __lll_lock_wait_private add $0x80,%rsp 0.00 3.00 43: lea __ctype_b@GLIBC_2.2.5+0x38,%rdi 3.00 lea 0xc(%rsp),%rsi 8.49 3.00 1 → callq __random_r 7.91 1.94 cmpl $0x0,argp_program_version_hook@@GLIBC_2.2.5+0x1e0 0.00 1.94 1 ↓ je 68 lock decl __abort_msg@@GLIBC_PRIVATE+0x8a0 ↓ jne 70 ↓ jmp 8a 0.00 2.00 68: decl __abort_msg@@GLIBC_PRIVATE+0x8a0 21.56 2.00 1 ↓ je 8a 70: lea __abort_msg@@GLIBC_PRIVATE+0x8a0,%rdi sub $0x80,%rsp → callq __lll_unlock_wake_private add $0x80,%rsp 21.56 2.90 8a: movslq 0xc(%rsp),%rax 2.90 add $0x18,%rsp 9.03 2.90 1 ← retq It shows for this symbol the average IPC is 2.30 and the IPC coverage is 54.8%. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1543586097-27632-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Add sanity check to is_timestamp_in_us()Tzvetomir Stoyanov2018-12-171-1/+1
| | | | | | | | | | | | | This patch adds a sanity check to is_timestamp_in_us() input parameter trace_clock. It avoids a potential segfault in this function for the case trace_clock is NULL. Reported-by: Slavomir Kaslev <kaslevs@vmware.com> Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20181128145552.68c4f87b@gandalf.local.home Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf beauty mmap_flags: Check if the arch has a mmap.h fileArnaldo Carvalho de Melo2018-12-172-3/+3
| | | | | | | | | | | | | | | | | | | If not, then just use what is in asm-generic. This fixes the build for my sh4, m68k and riscv64 perf test build containers that were failing due to 80ee5668b8a7 ("perf beauty: Add a generator for MAP_ mmap's flag constants"), that were not covered in the cset introducing those tools/arch/*/include/uapi/asm/mman.h files. f3539c12d819 ("tools include: Add uapi mman.h for each architecture") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 80ee5668b8a7 ("perf beauty: Add a generator for MAP_ mmap's flag constants") Link: https://lkml.kernel.org/n/tip-rpy9t2e0wxpnum1yvxhreafe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf record: Extend trace writing to multi AIOAlexey Budankov2018-12-174-42/+102
| | | | | | | | | | | | | | | | | | | | | | | | Multi AIO trace writing allows caching more kernel data into userspace memory postponing trace writing for the sake of overall profiling data thruput increase. It could be seen as kernel data buffer extension into userspace memory. With an --aio option value different from 0 (default value is 1) the tool has capability to cache more and more data into user space along with delegating spill to AIO. That allows avoiding to suspend at record__aio_sync() between calls of record__mmap_read_evlist() and increases profiling data thruput at the cost of userspace memory. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/050bb053-e7f3-aa83-fde7-f27ff90be7f6@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf record: Enable asynchronous trace writingAlexey Budankov2018-12-177-9/+314
| | | | | | | | | | | | | | | | | | | | | | | The trace file offset is read once before mmaps iterating loop and written back after all performance data is enqueued for aio writing. The trace file offset is incremented linearly after every successful aio write operation. record__aio_sync() blocks till completion of the started AIO operation and then proceeds. record__aio_mmap_read_sync() implements a barrier for all incomplete aio write requests. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/ce2d45e9-d236-871c-7c8f-1bed2d37e8ac@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf mmap: Map data buffer for preserving collected dataAlexey Budankov2018-12-173-3/+59
| | | | | | | | | | | | | | | The map->data buffer is used to preserve map->base profiling data for writing to disk. AIO map->cblock is used to queue corresponding map->data buffer for asynchronous writing. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/5fcda10c-6c63-68df-383a-c6d9e5d1f918@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools build feature: Check if libaio is availableAlexey Budankov2018-12-176-4/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This will be used by 'perf record' to speed up reading the perf ring buffer. Committer testing: $ make -C tools/perf O=/tmp/build/perf make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ OFF ] ... libaudit: [ OFF ] ... libbfd: [ OFF ] ... libelf: [ on ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libslang: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] $ ls -la /tmp/build/perf/feature/test-libaio.* -rwxrwxr-x. 1 acme acme 18296 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.bin -rw-rw-r--. 1 acme acme 1165 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.d -rw-rw-r--. 1 acme acme 0 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.make.output $ $ grep -i aio /tmp/build/perf/FEATURE-DUMP feature-libaio=1 $ Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/5fcda10c-6c63-68df-383a-c6d9e5d1f918@linux.intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf intel-pt: Fix error with config term "pt=0"Adrian Hunter2018-12-171-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Users should never use 'pt=0', but if they do it may give a meaningless error: $ perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). Fix that by forcing 'pt=1'. Committer testing: # perf record -e intel_pt/pt=0/u uname Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (intel_pt/pt=0/u). /bin/dmesg | grep -i perf may provide additional information. # perf record -e intel_pt/pt=0/u uname pt=0 doesn't make sense, forcing pt=1 Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data ] # 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: http://lkml.kernel.org/r/b7c5b4e5-9497-10e5-fd43-5f3e4a0fe51d@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf top: Allow passing a kallsyms fileArnaldo Carvalho de Melo2018-12-172-0/+5
| | | | | | | | | | | | | | | | | | | | | | This basically replicates what was done for 'perf report' in: b226a5a72901 ("perf report: Allow user to specify path to kallsyms file") This should help with resolving eBPF symbols, that are in kallsyms but, of course, not in vmlinux. Reported-by: Ivan Babrou <ibobrik@gmail.com> Tested-by: Ivan Babrou <ibobrik@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-x52mx1ybq8128rtg9hjrj5qk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR())Wen Yang2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | | Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)). This makes it more readable and also fix this warning detected by err_cast.cocci: tools/perf/util/bpf-loader.c:1606:11-18: WARNING: ERR_CAST can be used with op Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wen Yang <yellowriver2010@hotmail.com> Cc: zhong.weidong@zte.com.cn Link: http://lkml.kernel.org/r/20181127090610.28488-1-wen.yang99@zte.com.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools include: Adopt ERR_CAST() from the kernel err.h headerArnaldo Carvalho de Melo2018-12-171-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | Add ERR_CAST(), so that tools can use it, just like the kernel. This addresses coccinelle checks that are being performed to tools/ in addition to kernel sources, so lets add this to cover that and to get tools code closer to kernel coding standards. This originally was introduced in the kernel headers in this cset: d1bc8e954452 ("Add an ERR_CAST() function to complement ERR_PTR and co.") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Wen Yang <yellowriver2010@hotmail.com> Cc: zhong.weidong@zte.com.cn Link: https://lkml.kernel.org/n/tip-tlt97p066zyhzqhl5jt86og7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix perf_event_attr test failureAdrian Hunter2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | | | | Fix inconsistent use of tabs and spaces error: # perf test 16 -v 16: Setup struct perf_event_attr : --- start --- test child forked, pid 20224 File "/usr/libexec/perf-core/tests/attr.py", line 119 log.warning("expected %s=%s, got %s" % (t, self[t], other[t])) ^ TabError: inconsistent use of tabs and spaces in indentation test child finished with -1 ---- end ---- Setup struct perf_event_attr: FAILED! Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20181122140456.16817-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests record: Allow for 'sleep' being 'coreutils'Adrian Hunter2018-12-171-2/+5
| | | | | | | | | | | | If the 'sleep' command is provided by coreutils, then the "PERF_RECORD_* events & perf_sample fields" test will fail because the MMAP name is 'coreutils' not 'sleep', and there is an extra COMM event. Fix the test to detect that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20181122135545.16295-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.cAdrian Hunter2018-12-171-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix following warnings: event-parse.c: In function ‘tep_find_event_by_name’: event-parse.c:3521:21: warning: ‘event’ may be used uninitialized in this function [-Wmaybe-uninitialized] pevent->last_event = event; ~~~~~~~~~~~~~~~~~~~^~~~~~~ CC ui/gtk/hists.o LINK plugin_mac80211.so CC nlattr.o event-parse.c: In function ‘tep_data_lat_fmt’: event-parse.c:5200:4: warning: ‘migrate_disable’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", migrate_disable); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:5207:4: warning: ‘lock_depth’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", lock_depth); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ LINK plugin_sched_switch.so LINK plugin_function.so LINK plugin_xen.so event-parse.c: In function ‘tep_event_info’: event-parse.c:5047:7: warning: ‘len_arg’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, format, len_arg, (char)val); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:4884:6: note: ‘len_arg’ was declared here int len_arg; ^~~~~~~ event-parse.c:4338:11: warning: ‘vsize’ may be used uninitialized in this function [-Wmaybe-uninitialized] val = tep_read_number(pevent, bptr, vsize); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:4224:6: note: ‘vsize’ was declared here int vsize; ^~~~~ $ gcc --version gcc (Clear Linux OS for Intel Architecture) 8.2.1 20180502 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Link: http://lkml.kernel.org/r/20181122112937.10582-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf script: Use fallbacks for branch stacksAdrian Hunter2018-12-172-14/+14
| | | | | | | | | | | | | | | | | | Branch stacks do not necessarily have the same cpumode as the 'ip'. Use the fallback functions in those cases. This patch depends on patch "perf tools: Add fallback functions for cases where cpumode is insufficient". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Use fallback for sample_addr_correlates_sym() casesAdrian Hunter2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | | | thread__resolve() is used in the sample_addr_correlates_sym() cases where 'addr' is a destination of a branch which does not necessarily have the same cpumode as the 'ip'. Use the fallback function in that case. This patch depends on patch "perf tools: Add fallback functions for cases where cpumode is insufficient". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf thread: Add fallback functions for cases where cpumode is insufficientAdrian Hunter2018-12-174-0/+60
| | | | | | | | | | | | | | | | | For branch stacks or branch samples, the sample cpumode might not be correct because it applies only to the sample 'ip' and not necessary to 'addr' or branch stack addresses. Add fallback functions that can be used to deal with those cases Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf machine: Record if a arch has a single user/kernel address spaceAdrian Hunter2018-12-174-0/+16
| | | | | | | | | | | | | | | | | | | | | Some architectures have a single address space for kernel and user addresses, which makes it possible to determine if an address is in kernel space or user space. Some don't, e.g.: sparc. Cache that info in perf_env so that, for instance, code needing to fallback failed symbol lookups at the kernel space in single address space arches can lookup at userspace. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf env: Also consider env->arch == NULL as local operationArnaldo Carvalho de Melo2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | | | We'll set a new machine field based on env->arch, which for live mode, like with 'perf top' means we need to use uname() to figure the name of the arch, fix perf_env__arch() to consider both (env == NULL) and (env->arch == NULL) as local operation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: stable@vger.kernel.org # 4.19 Link: https://lkml.kernel.org/n/tip-vcz4ufzdon7cwy8dm2ua53xk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf map: Remove extra indirection from map__find()Eric Saint-Etienne2018-12-171-7/+6
| | | | | | | | | | | | | | A double pointer is used in map__find() where a single pointer is enough because the function doesn't affect the rbtree and the rbtree is locked. Signed-off-by: Eric Saint-Etienne <eric.saint.etienne@oracle.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Eric Saint-Etienne <eric.saintetienne@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1542969759-24346-1-git-send-email-eric.saint.etienne@oracle.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf stat: Fix CSV mode column output for non-cgroup eventsStephane Eranian2018-12-171-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using the -x option, perf stat prints CSV-style output with one event per line. For each event, it prints the count, the unit, the event name, the cgroup, and a bunch of other event specific fields (such as insn per cycles). When you use CSV-style mode, you expect a normalized output where each event is printed with the same number of fields regardless of what it is so it can easily be imported into a spreadsheet or parsed. For instance, if an event does not have a unit, then print an empty field for it. Although this approach was implemented for the unit, it was not for the cgroup. When mixing cgroup and non-cgroup events, then non-cgroup events would not show an empty field, instead the next field was printed, make columns not line up correctly. This patch fixes the cgroup output issues by forcing an empty field for non-cgroup events as soon as one event has cgroup. Before: <not counted> @ @cycles @foo @ 0 @100.00@@ 2531614 @ @cycles @6420922@100.00@ @ foo cgroup lines up with time_running! After: <not counted> @ @cycles @foo @0 @100.00@@ 2594834 @ @cycles @ @5287372 @100.00@@ Fields line up. Signed-off-by: Stephane Eranian <eranian@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1541587845-9150-1-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf stat: Fix shadow stats for clock eventsRavi Bangoria2018-12-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 0aa802a79469 ("perf stat: Get rid of extra clock display function") introduced scale and unit for clock events. Thus, perf_stat__update_shadow_stats() now saves scaled values of clock events in msecs, instead of original nsecs. But while calculating values of shadow stats we still consider clock event values in nsecs. This results in a wrong shadow stat values. Ex, # ./perf stat -e task-clock,cycles ls <SNIP> 2.60 msec task-clock:u # 0.877 CPUs utilized 2,430,564 cycles:u # 1215282.000 GHz Fix this by saving original nsec values for clock events in perf_stat__update_shadow_stats(). After patch: # ./perf stat -e task-clock,cycles ls <SNIP> 3.14 msec task-clock:u # 0.839 CPUs utilized 3,094,528 cycles:u # 0.985 GHz Suggested-by: Jiri Olsa <jolsa@redhat.com> Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: yuzhoujian@didichuxing.com Fixes: 0aa802a79469 ("perf stat: Get rid of extra clock display function") Link: http://lkml.kernel.org/r/20181116042843.24067-1-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf build: Give better hint about devel package for libsslArnaldo Carvalho de Melo2018-12-171-1/+1
| | | | | | | | | | | | | | | In debian/ubuntu its libssl-dev, but for fedora/RHEL/Centos/etc its openssl-devel, fix it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 8ee4646038e4 ("perf build: Add libcrypto feature detection") Link: https://lkml.kernel.org/n/tip-lnxqszts6aq2c9jy4b7mlnym@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-18 02:25:30 +0000