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2016-10-04perf tools: Query terminal width and use in perf listAndi Kleen1-1/+2
Automatically adapt the now wider and word wrapped perf list output to wider terminals. This requires querying the terminal before the auto pager takes over, and exporting this information from the pager subsystem. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-8-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf pmu: Support alias descriptionsAndi Kleen2-16/+68
Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Committer notes: Further testing on a Broadwell machine (ThinkPad t450s), using these files: $ find tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/ tools/perf/pmu-events/arch/x86/Broadwell tools/perf/pmu-events/arch/x86/Broadwell/Cache.json tools/perf/pmu-events/arch/x86/Broadwell/Other.json tools/perf/pmu-events/arch/x86/Broadwell/Frontend.json tools/perf/pmu-events/arch/x86/Broadwell/Virtual-Memory.json tools/perf/pmu-events/arch/x86/Broadwell/Pipeline.json tools/perf/pmu-events/arch/x86/Broadwell/Floating-point.json tools/perf/pmu-events/arch/x86/Broadwell/Memory.json tools/perf/pmu-events/arch/x86/mapfile.csv $ Taken from: https://github.com/sukadev/linux/tree/json-code+data-v21/tools/perf/pmu-events/arch/x86/ to get this machinery to actually parse JSON files, generate $(OUTPUT)pmu-events/pmu-events.c, compile it and link it with perf, that will then use the table it contains, these files will be submitted right after this patchkit. [acme@jouet linux]$ perf list page_walker List of pre-defined events (to be used in -e): page_walker_loads.dtlb_l1 [Number of DTLB page walker hits in the L1+FB] page_walker_loads.dtlb_l2 [Number of DTLB page walker hits in the L2] page_walker_loads.dtlb_l3 [Number of DTLB page walker hits in the L3 + XSNP] page_walker_loads.dtlb_memory [Number of DTLB page walker hits in Memory] page_walker_loads.itlb_l1 [Number of ITLB page walker hits in the L1+FB] page_walker_loads.itlb_l2 [Number of ITLB page walker hits in the L2] page_walker_loads.itlb_l3 [Number of ITLB page walker hits in the L3 + XSNP] [acme@jouet linux]$ Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-7-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf jevents: Handle header line in mapfileAndi Kleen1-2/+7
To work with existing mapfiles, assume that the first line in 'mapfile.csv' is a header line and skip over it. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1473978296-20712-15-git-send-email-sukadev@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf tools: Support CPU id matching for x86 v2Andi Kleen1-3/+21
Implement the code to match CPU types to mapfile types for x86 based on CPUID. This extends an existing similar function, but changes it to use the x86 mapfile cpu description. This allows to resolve event lists generated by jevents. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-6-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf powerpc: Support CPU ID matching for PowerpcSukadev Bhattiprolu1-0/+11
Implement code that returns the generic CPU ID string for Powerpc. This will be used to identify the specific table of PMU events to parse/compare user specified events against. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-5-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf pmu: Use pmu_events table to create aliasesSukadev Bhattiprolu2-0/+61
At run time (when 'perf' is starting up), locate the specific table of PMU events that corresponds to the current CPU. Using that table, create aliases for the each of the PMU events in the CPU. The use these aliases to parse the user specified perf event. In short this would allow the user to specify events using their aliases rather than raw event codes. Based on input and some earlier patches from Andi Kleen, Jiri Olsa. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-4-git-send-email-sukadev@linux.vnet.ibm.com [ Make pmu_add_cpu_aliases() return void, since it was returning just '0' and furthermore, even that was being discarded via an explicit (void) cast ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-04perf jevents: Program to convert JSON fileAndi Kleen6-4/+869
This is a modified version of an earlier patch by Andi Kleen. We expect architectures to create JSON files describing the performance monitoring (PMU) events that each CPU model/family of the architecture supports. Following is an example of the JSON file entry for an x86 event: [ ... { "EventCode": "0x00", "UMask": "0x01", "EventName": "INST_RETIRED.ANY", "BriefDescription": "Instructions retired from execution.", "PublicDescription": "Instructions retired from execution.", "Counter": "Fixed counter 1", "CounterHTOff": "Fixed counter 1", "SampleAfterValue": "2000003", "SampleAfterValue": "2000003", "MSRIndex": "0", "MSRValue": "0", "TakenAlone": "0", "CounterMask": "0", "Invert": "0", "AnyThread": "0", "EdgeDetect": "0", "PEBS": "0", "PRECISE_STORE": "0", "Errata": "null", "Offcore": "0" }, ... ] All the PMU events supported by a CPU model/family must be grouped into "topics" such as "Pipelining", "Floating-point", "Virtual-memory" etc. All events belonging to a topic must be placed in a separate JSON file (eg: "Pipelining.json") and all the topic JSON files for a CPU model must be in a separate directory. Eg: for the CPU model "Silvermont_core": $ ls tools/perf/pmu-events/arch/x86/Silvermont_core Floating-point.json Memory.json Other.json Pipelining.json Virtualmemory.json Finally, to allow multiple CPU models to share a single set of JSON files, architectures must provide a mapping between a model and its set of events: $ grep Silvermont tools/perf/pmu-events/arch/x86/mapfile.csv GenuineIntel-6-4D,V13,Silvermont_core,core GenuineIntel-6-4C,V13,Silvermont_core,core which maps each CPU, identified by [vendor, family, model, version, type] to a directory of JSON files. Thus two (or more) CPU models support the set of PMU events listed in the directory. tools/perf/pmu-events/arch/x86/Silvermont_core/ Given this organization of files, the program, jevents: - locates all JSON files for each CPU-model of the architecture, - parses all JSON files for the CPU-model and generates a C-style "PMU-events table" (pmu-events.c) for the model - locates a mapfile for the architecture - builds a global table, mapping each model of CPU to the corresponding PMU-events table. The 'pmu-events.c' is generated when building perf and added to libperf.a. The global table pmu_events_map[] table in this pmu-events.c will be used in perf in a follow-on patch. If the architecture does not have any JSON files or there is an error in processing them, an empty mapping file is created. This would allow the build of perf to proceed even if we are not able to provide aliases for events. The parser for JSON files allows parsing Intel style JSON event files. This allows to use an Intel event list directly with perf. The Intel event lists can be quite large and are too big to store in unswappable kernel memory. The conversion from JSON to C-style is straight forward. The parser knows (very little) Intel specific information, and can be easily extended to handle fields for other CPUs. The parser code is partially shared with an independent parsing library, which is 2-clause BSD licensed. To avoid any conflicts I marked those files as BSD licensed too. As part of perf they become GPLv2. Committer notes: Fixes: 1) Limit maxfds to 512 to avoid nftd() segfaulting on alloca() with a big rlim_max, as in docker containers - acme 2) Make jevents a hostprog, supporting cross compilation - jolsa 3) Use HOSTCC for jevents final step - acme 4) Define _GNU_SOURCE for asprintf, as we can't use CC's EXTRA_CFLAGS, that has to have --sysroot on the Android NDK 24 - acme 5) Removed $(srctree)/tools/perf/pmu-events/pmu-events.c from the 'clean' target, it is generated on $(OUTPUT)pmu-events/pmu-events.c, which is already taken care of in the original patch - acme Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-3-git-send-email-sukadev@linux.vnet.ibm.com Link: http://lkml.kernel.org/r/20160927141846.GA6589@krava Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-03perf tools: Add jsmn `jasmine' JSON parserAndi Kleen4-0/+574
I need a JSON parser. This adds the simplest JSON parser I could find -- Serge Zaitsev's jsmn `jasmine' -- to the perf library. I merely converted it to (mostly) Linux style and added support for non 0 terminated input. The parser is quite straight forward and does not copy any data, just returns tokens with offsets into the input buffer. So it's relatively efficient and simple to use. The code is not fully checkpatch clean, but I didn't want to completely fork the upstream code. Original source: http://zserge.bitbucket.org/jsmn.html In addition I added a simple wrapper that mmaps a json file and provides some straight forward access functions. Used in follow-on patches to parse event files. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-2-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> [ Use fcntl.h instead of sys/fcntl.h to fix the build on Alpine Linux 3.4/musl libc, use stdbool.h to avoid clashing with 'bool' typedef there ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-03perf tools: Experiment with cppcheckArnaldo Carvalho de Melo5-20/+13
Experimenting a bit using cppcheck[1], a static checker brought to my attention by Colin, reducing the scope of some variables, reducing the line of source code lines in the process: $ cppcheck --enable=style tools/perf/util/thread.c Checking tools/perf/util/thread.c... [tools/perf/util/thread.c:17]: (style) The scope of the variable 'leader' can be reduced. [tools/perf/util/thread.c:133]: (style) The scope of the variable 'err' can be reduced. [tools/perf/util/thread.c:273]: (style) The scope of the variable 'err' can be reduced. Will continue later, but these are already useful, keep them. 1: https://sourceforge.net/p/cppcheck/wiki/Home/ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Colin Ian King <colin.king@canonical.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: http://lkml.kernel.org/n/tip-ixws7lbycihhpmq9cc949ti6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-03perf probe: Check if *ptr2 is zero and not ptr2Colin Ian King1-1/+1
Static anaylsis with cppcheck[1] detected an incorrect comparison: [tools/perf/util/probe-event.c:216]: (warning) Char literal compared with pointer 'ptr2'. Did you intend to dereference it? Dereference ptr2 for the comparison to fix this. 1: https://sourceforge.net/p/cppcheck/wiki/Home/ Signed-off-by: Colin King <colin.king@canonical.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 35726d3a4ca9 ("perf probe: Fix to cut off incompatible chars from group name") Link: http://lkml.kernel.org/r/20161003103431.18534-1-colin.king@canonical.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf tests: Add dwarf unwind test for powerpcRavi Bangoria9-2/+193
The user stack dump feature was recently added for powerpc. But there was no test case available to test it. This test works same as on other architectures by preparing a stack frame on the perf test thread and comparing each frame by unwinding it. $ ./perf test 50 50: Test dwarf unwind : Ok User stack dump for powerpc: https://lkml.org/lkml/2016/4/28/482 Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Matt Fleming <matt.fleming@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1474267100-31079-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf probe: Match linkage name with mangled nameMasami Hiramatsu2-2/+29
Match linkage name with mangled name if exists. The linkage_name is used for storing mangled name of the object. Thus, this allows 'perf probe' to find appropriate probe point from mangled symbol as below. E.g. without this fix: ---- $ perf probe -x /usr/lib64/libstdc++.so.6 \ -D _ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv Probe point '_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv' not found. Error: Failed to add events. ---- With this fix, perf probe can find the correct one. ---- $ perf probe -x /usr/lib64/libstdc++.so.6 \ -D _ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv p:probe_libstdc/_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv /usr/lib64/libstdc++.so.6.0.22:0x8ca60 ---- Committer notes: After the fix, setting it for real (no -D/--definition, that amounts to a --dry-run): # perf probe -x /usr/lib64/libstdc++.so.6 _ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv Added new event: probe_libstdc:_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv (on _ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv in /usr/lib64/libstdc++.so.6.0.22) You can now use it in all perf tools, such as: perf record -e probe_libstdc:_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv -aR sleep 1 # perf probe -l probe_libstdc:* probe_libstdc:_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv (on is_open@libstdc++-v3/include/fstream in /usr/lib64/libstdc++.so.6.0.22) # Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/147464493162.29804.16715053505069382443.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf probe: Fix to cut off incompatible chars from group nameMasami Hiramatsu1-3/+7
Cut off the characters which can not use for group name of uprobes when making it based on executable filename. For example, if the exec name is libstdc++.so, without this fix perf probe generates "probe_libstdc++" as the group name, but it is failed to set because '+' can not be used for group name. With this fix perf accepts only alphabet, number or '_' for group name, thus perf generates "probe_libstdc" as the group name. E.g. with this fix, you can see the event name has no "+". ---- $ ./perf probe -x /usr/lib64/libstdc++.so.6 -D is_open p:probe_libstdc/is_open /usr/lib64/libstdc++.so.6.0.22:0x8ca80 p:probe_libstdc/is_open_1 /usr/lib64/libstdc++.so.6.0.22:0x8ca70 p:probe_libstdc/is_open_2 /usr/lib64/libstdc++.so.6.0.22:0x8ca60 p:probe_libstdc/is_open_3 /usr/lib64/libstdc++.so.6.0.22:0xb0ad0 p:probe_libstdc/is_open_4 /usr/lib64/libstdc++.so.6.0.22:0xecca9 ---- Committer note: Before this fix: # perf probe -x /usr/lib64/libstdc++.so.6 is_open Failed to write event: Invalid argument Error: Failed to add events. # After the fix: # perf probe -x /usr/lib64/libstdc++.so.6 is_open Added new events: probe_libstdc:is_open (on is_open in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_1 (on is_open in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_2 (on is_open in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_3 (on is_open in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_4 (on is_open in /usr/lib64/libstdc++.so.6.0.22) You can now use it in all perf tools, such as: perf record -e probe_libstdc:is_open_4 -aR sleep 1 # perf probe -l probe_libstdc:* probe_libstdc:is_open (on is_open@libstdc++-v3/include/fstream in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_1 (on is_open@libstdc++-v3/include/fstream in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_2 (on is_open@libstdc++-v3/include/fstream in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_3 (on is_open@src/c++98/basic_file.cc in /usr/lib64/libstdc++.so.6.0.22) probe_libstdc:is_open_4 (on stdio_filebuf:5@include/ext/stdio_filebuf.h in /usr/lib64/libstdc++.so.6.0.22) # Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/147464491667.29804.9553638175441827970.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf probe: Skip if the function address is 0Masami Hiramatsu1-1/+11
Skip probes if the entry address of the target function is 0. This can happen when we're handling C++ debuginfo files. E.g. without this fix, below case still fail. ---- $ ./perf probe -x /usr/lib64/libstdc++.so.6 -vD is_open probe-definition(0): is_open symbol:is_open file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments symbol:catch file:(null) line:0 offset:0 return:0 lazy:(null) symbol:throw file:(null) line:0 offset:0 return:0 lazy:(null) symbol:rethrow file:(null) line:0 offset:0 return:0 lazy:(null) Open Debuginfo file: /usr/lib/debug/usr/lib64/libstdc++.so.6.0.22.debug Try to find probe point from debuginfo. Matched function: is_open [295df] found inline addr: 0x8ca80 Probe point found: is_open+0 found inline addr: 0x8ca70 Probe point found: is_open+0 found inline addr: 0x8ca60 Probe point found: is_open+0 Matched function: is_open [6527f] Matched function: is_open [9fe8a] Probe point found: is_open+0 Matched function: is_open [19710b] found inline addr: 0xecca9 Probe point found: stdio_filebuf+57 found inline addr: 0x0 Probe point found: swap+0 Matched function: is_open [19fc9d] Probe point found: is_open+0 Found 7 probe_trace_events. p:probe_libstdc++/is_open /usr/lib64/libstdc++.so.6.0.22:0x8ca80 p:probe_libstdc++/is_open_1 /usr/lib64/libstdc++.so.6.0.22:0x8ca70 p:probe_libstdc++/is_open_2 /usr/lib64/libstdc++.so.6.0.22:0x8ca60 p:probe_libstdc++/is_open_3 /usr/lib64/libstdc++.so.6.0.22:0xb0ad0 p:probe_libstdc++/is_open_4 /usr/lib64/libstdc++.so.6.0.22:0xecca9 Failed to synthesize probe trace event. Error: Failed to add events. Reason: Invalid argument (Code: -22) ---- This is because some instances have entry_pc == 0 (see 19710b and 19fc9d). With this fix, those are skipped. ---- $ ./perf probe -x /usr/lib64/libstdc++.so.6 -D is_open p:probe_libstdc++/is_open /usr/lib64/libstdc++.so.6.0.22:0x8ca80 p:probe_libstdc++/is_open_1 /usr/lib64/libstdc++.so.6.0.22:0x8ca70 p:probe_libstdc++/is_open_2 /usr/lib64/libstdc++.so.6.0.22:0x8ca60 p:probe_libstdc++/is_open_3 /usr/lib64/libstdc++.so.6.0.22:0xb0ad0 p:probe_libstdc++/is_open_4 /usr/lib64/libstdc++.so.6.0.22:0xecca9 ---- Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/147464490707.29804.14277897643725143867.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf probe: Ignore the error of finding inline instanceMasami Hiramatsu1-2/+3
Ignore the error when the perf probe failed to find inline function instances. This can happen when we search a method in C++ debuginfo. If there is completely no instance in target, perf probe can return an error. E.g. without this fix: ---- $ perf probe -x /usr/lib64/libstdc++.so.6 -vD showmanyc probe-definition(0): showmanyc symbol:showmanyc file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments symbol:catch file:(null) line:0 offset:0 return:0 lazy:(null) symbol:throw file:(null) line:0 offset:0 return:0 lazy:(null) symbol:rethrow file:(null) line:0 offset:0 return:0 lazy:(null) Open Debuginfo file: /usr/lib/debug/usr/lib64/libstdc++.so.6.0.22.debug Try to find probe point from debuginfo. Matched function: showmanyc An error occurred in debuginfo analysis (-2). Trying to use symbols. Failed to find symbol showmanyc in /usr/lib64/libstdc++.so.6.0.22 Error: Failed to add events. Reason: No such file or directory (Code: -2) ---- This is because one of showmanyc is defined as inline but no instance found. With this fix, it is succeeded to show as below. ---- $ perf probe -x /usr/lib64/libstdc++.so.6 -D showmanyc p:probe_libstdc++/showmanyc /usr/lib64/libstdc++.so.6.0.22:0xb0e50 p:probe_libstdc++/showmanyc_1 /usr/lib64/libstdc++.so.6.0.22:0xc7c40 p:probe_libstdc++/showmanyc_2 /usr/lib64/libstdc++.so.6.0.22:0xecfa0 p:probe_libstdc++/showmanyc_3 /usr/lib64/libstdc++.so.6.0.22:0x115fc0 p:probe_libstdc++/showmanyc_4 /usr/lib64/libstdc++.so.6.0.22:0x121a90 ---- Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/147464489775.29804.3190419491209875936.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Fix decoding when there are address filtersAdrian Hunter1-0/+82
Due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", the Intel PT decoder needs to match address filters against TIP.PGD packets. Parse the address filters and implement the decoder's 'pgd_ip()' callback to match the IP against the filter regions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-17-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Enable decoder to handle TIP.PGD with missing IPAdrian Hunter2-0/+31
When address filters are used, the decoder must detect the end of a filter region (or a branch into a tracestop region) by matching Packet Generation Disabled (TIP.PGD) packets against the object code using the IP given in the packet. However, due to errata SKL014 "Intel PT TIP.PGD May Not Have Target IP Payload", that IP may not be present. Enable the decoder to handle that by adding a new callback function 'pgd_ip()' which indicates whether the IP is not traced, in which case that is the point where the trace was disabled. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-16-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Read address filter from AUXTRACE_INFO eventAdrian Hunter1-0/+51
Read the address filter from the AUXTRACE_INFO event in preparation for using it to assist in decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Record address filter in AUXTRACE_INFO eventAdrian Hunter2-6/+48
The address filter is needed to help decode the trace, so store it in the AUXTRACE_INFO event. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Add a helper function for processing AUXTRACE_INFOAdrian Hunter1-4/+8
Add a helper function 'intel_pt_has()' to make it easier to determine which members the AUXTRACE_INFO event contains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Fix missing error codes processing auxtrace_infoAdrian Hunter1-0/+2
Fix 2 places where the err variable was not being set. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Add support for recording the max non-turbo ratioAdrian Hunter3-1/+20
Previously the maximum non-turbo ratio was calculated from TSC assuming a 100 MHz multiplier which is correct for current hardware supporting Intel PT. However more recent kernels also now export the value, so use that in preference to the calculated value. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-11-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf intel-pt: Fix snapshot overlap detection decoder errorsAdrian Hunter1-4/+11
Fix occasional decoder errors decoding trace data collected in snapshot mode. Snapshot mode can take successive snapshots of trace which might overlap. The decoder checks whether there is an overlap but only looks at the current and previous buffer. However buffers that do not contain synchronization (i.e. PSB) packets cannot be decoded or used for overlap checking. That means the decoder actually needs to check overlaps between the current buffer and the previous buffer that contained usable data. Make that change. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # v4.3+ Link: http://lkml.kernel.org/r/1474641528-18776-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf probe: Increase debug level of SDT debug messagesAdrian Hunter2-3/+3
Two SDT debug messages can occur for every DSO which is too noisy. Consequently, increase debug level of SDT messages. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf record: Add support for using symbols in address filtersAdrian Hunter4-3/+857
Symbols come from either the DSO or /proc/kallsyms for the kernel. Details of the functionality can be found in Documentation/perf-record.txt. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf symbols: Add dso__last_symbol()Adrian Hunter2-0/+16
Add a function to find the last symbol in a DSO. This will be used when parsing address filters to calculate a region that includes the entire DSO. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf record: Fix error pathsAdrian Hunter1-4/+4
Some error paths do not tidy-up. Fix that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf record: Rename label 'out_symbol_exit'Adrian Hunter1-5/+5
In preparation for fixing the error paths, rename label 'out_symbol_exit' to be 'out' because that error path can be used irrespective of whether symbols (or anything else) has been initialized. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf script: Fix vanished idle symbolsAdrian Hunter1-5/+2
Commit 608c34de0b3d ("perf symbols: Mark if a symbol is idle in the library") causes idle symbols to vanish from perf script output. That is because print functions suppress symbols marked as 'idle'. However, suppression of 'idle' functions is only used by 'perf top' and 'perf top' does not use the print functions. Consequently that functionality can simply be removed from the print functions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Fixes: 608c34de0b3d ("perf symbols: Mark if a symbol is idle in the library") Link: http://lkml.kernel.org/r/1474641528-18776-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf evsel: Add support for address filtersMathieu Poirier3-5/+41
This patch makes it possible to use the current filter framework with address filters. That way address filters for HW tracers such as CoreSight and Intel PT can be communicated to the kernel drivers. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474037045-31730-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf evsel: New tracepoint specific functionMathieu Poirier4-10/+13
Making function perf_evsel__append_filter() static and introducing a new tracepoint specific function to append filters. That way we eliminate redundant code and avoid formatting mistake. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474037045-31730-3-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf tools: Make perf_evsel__append_filter() genericMathieu Poirier4-7/+12
By making function perf_evsel__append_filter() take a format rather than an operator it is possible to reuse the code for other purposes (ex. Intel PT and CoreSight) than tracepoints. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474037045-31730-2-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-29perf tools: Update documentation info about quipperSimon Que1-1/+5
The existing link is outdated. The most recent quipper code can be found at the new URL. Committer notes: Quipper is a C++ parser that can be used to convert from a perf.data file to and from a protobuf, a Chromium OS facility. Signed-off-by: Simon Que <sque@chromium.org> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Chong Jiang <chongjiang@chromium.org> Link: http://lkml.kernel.org/n/tip-4q1nm7jl3vovp66p5bki20pq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-28perf trace: Beautify sched_[gs]et_attr return valueArnaldo Carvalho de Melo1-0/+2
Both return errno, show the string associated then. More work needed to capture the sched_attr arg to beautify it in turn, probably using BPF. Before: 0.210 ( 0.001 ms): sched_setattr(uattr: 0x7ffc684f02b0) = -22 After the patch, for this sched_attr, all other parms are zero, so not shown: struct sched_attr attr = { .size = sizeof(attr), .sched_policy = SCHED_DEADLINE, .sched_runtime = 10 * USECS_PER_SEC, .sched_period = 30 * USECS_PER_SEC, .sched_deadline = attr.sched_period, }; 0.321 ( 0.002 ms): sched_setattr(uattr: 0x7ffc44116da0) = -1 EINVAL Invalid argument [root@jouet c]# perf trace -e sched_setattr ./sched_deadline Couldn't negotiate deadline: Invalid argument 0.229 ( 0.003 ms): sched_setattr(uattr: 0x7ffd8dcd8df0) = -1 EINVAL Invalid argument [root@jouet c]# Now to figure out the reason for this EINVAL. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Clark Williams <williams@redhat.com> Cc: Daniel Bristot de Oliveira <bristot@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-tyot2n7e48zm8pdw8tbcm3sl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-28perf data: Fix building in 32 bit platform with libbabeltraceWang Nan1-1/+1
On ARM32 building it report following error when we build with libbabeltrace: util/data-convert-bt.c: In function 'add_bpf_output_values': util/data-convert-bt.c:440:3: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Werror=format] cc1: all warnings being treated as errors Fix it by changing %lu to %zu. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Fixes: 6122d57e9f7c ("perf data: Support converting data from bpf_perf_event_output()") Link: http://lkml.kernel.org/r/1475035126-146587-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-28perf tools: Fix MMAP event synthesis broken by MAP_HUGETLB changeAdrian Hunter1-1/+2
Patch "perf record: Mark MAP_HUGETLB when synthesizing mmap events") breaks MMAP event synthesis. The executable name comparison will match any name if the length is zero, resulting in all the user space maps becoming anonymous. This is particularly noticeable with system-wide traces. Example: perf record -a sleep 1 perf script --show-mmap-events Committer note: That is not the case when, say, one has a qemu instance and libvirt actually mounts hugetlbfs. To test this I had to first umount it: [root@jouet ~]# mount | grep hugetlbfs hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel) [root@jouet ~]# After unmount it the error fixed by this patch manifests itself: # perf record -a sleep 1 # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp //anon # Fixed version: # perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.419 MB perf.data (182 samples) ] # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp /usr/lib/systemd/systemd systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp /usr/lib64/libuuid.so.1.3.0 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp /usr/lib64/libblkid.so.1.1.0 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp /usr/lib64/libz.so.1.2.8 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp /usr/lib64/liblzma.so.5.2.2 [root@jouet ~]# Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-27perf record: Fix documentation 'event_sources' -> 'event_source'Adrian Hunter1-3/+3
Change '/sys/bus/event_sources' to the correct path which is '/sys/bus/event_source'. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Make hists__fprintf_headers function globalJiri Olsa2-1/+2
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-10-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Make __hist_entry__snprintf function globalJiri Olsa2-2/+4
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Make several display functions globalJiri Olsa3-2/+4
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Make several sorting functions globalJiri Olsa2-3/+9
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Make output_field_add and sort_dimension__add globalJiri Olsa2-4/+8
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Make reset_dimensions globalJiri Olsa2-1/+2
Will be used from external places in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf hists: Add __hist_entry__snprintf functionJiri Olsa1-2/+8
Add __hist_entry__snprintf() to take a perf_hpp_list as an argument instead of using he->hists->hpp_list. This way we can display arbitrary list of entries regardless of the hists setup, which will be useful in the upcoming c2c patch series. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474558645-19956-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Add sink configuration for cs_etm PMUMathieu Poirier3-0/+63
Using the PMU::set_drv_config() callback to enable the CoreSight sink that will be used for the trace session. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-8-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Add PMU configuration to toolsMathieu Poirier3-0/+32
Now that the required mechanic is there to deal with PMU specific configuration, add the functionality to the tools where events can be selected. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-7-git-send-email-mathieu.poirier@linaro.org [ Fix the build on XSI-compliant systems, using str_error_r() to make sure we return a string, not an integer ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf pmu: Push configuration down to PMU driverMathieu Poirier4-0/+106
This patch adds a PMU callback and the required mechanic so that drivers can process the command line configuration elements found in evsel::config_terms. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-6-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Add coresight etm PMU record capabilitiesMathieu Poirier8-2/+716
Coresight ETMs are IP blocks used to perform HW assisted tracing on a CPU core. This patch introduce the required auxiliary API functions allowing the perf core to interact with a tracer. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Make coresight PMU listableMathieu Poirier3-0/+38
Adding the required mechanic allowing 'perf list pmu' to discover coresight ETM/PTM tracers. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-3-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-22perf tools: Confine __get_cpuid() to x86 architectureMathieu Poirier1-4/+7
The __get_cpuid() test is only valid when compiling for x86. When compiling for other architectures like ARM/ARM64 the test fails event if the functionality is not required. This patch isolate the build-in feature check to x86 platform, allowing the compilation and usage of PMUs that use the AUXTRACE infrastructure on other architectures (i.e ARM CoreSight). Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1474041004-13956-2-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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