1. 08 12月, 2015 4 次提交
  2. 06 12月, 2015 10 次提交
  3. 04 12月, 2015 1 次提交
  4. 28 11月, 2015 10 次提交
  5. 27 11月, 2015 15 次提交
    • M
      perf buildid-list: Show running kernel build id fix · c4e07949
      Michael Petlan 提交于
      The --kernel option of perf buildid-list tool should show the running
      kernel buildid.  The functionality has been lost during other changes of
      the related code.
      
      The build_id__sprintf() function should return length of the build-id
      string,  but it was the length of the build-id raw data instead. Due to
      that, some return value checking caused that the final string was not
      printed out.
      
      With this patch the build_id__sprintf() returns the correct value, so
      the --kernel option works again.
      
      Before:
      
      	# perf buildid-list --kernel
      	#
      
      After:
      
      	# perf buildid-list --kernel
      	972c1edab5bdc06cc224af45d510af662a3c6972
      	#
      Signed-off-by: NMichael Petlan <mpetlan@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      LPU-Reference: 1448632089.24573.114.camel@redhat.com
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      c4e07949
    • I
      Merge tag 'perf-core-for-mingo' of... · 3f3b1a46
      Ingo Molnar 提交于
      Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
      
      Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
      
      User visible changes:
      
        - Add 'vmlinux.debug' to the vmlinux search path (Ekaterina Tumanova)
      
        - Do not show sample_(type|period) in the perf_event_attr dump when using
          -v with 'perf stat' (Jiri Olsa)
      
        - Display the WEIGHT sample bit, when set, in 'perf evlist -v' (Jiri Olsa)
      
        - Honour --hide-unresolved in 'report', will honour it as well in 'top'
          when --hide-unresolved gets supported in that tool (Namhyung Kim)
      
        - Fix freeze wit h--call-graph 'flat/folded' due to not properly
          reinitializing the callchain rb_tree (Namhyumg Kim)
      
        - Set dso->long_name when a module name is passed as a parameter
          to tools like 'perf probe' but the 'struct dso' associated to that module
          still doesn't have the full path for the module, just the '[name]' one
          obtained from /proc/modules (Wang Nan)
      
        - Fix anon_hugepage mmaps detection using scanf on /proc/PID/smaps (Yannick Brosseau)
      
      Infrastructure changes:
      
        - Add helper function for updating bpf maps elements (He Kuang)
      
        - Fix traceevents plugins build race (Jiri Olsa)
      
        - Add the $OUTPUT path prefix with 'fixdep' (Jiri Olsa)
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      3f3b1a46
    • H
      bpf tools: Add helper function for updating bpf maps elements · 43798bf3
      He Kuang 提交于
      Add bpf_map_update_elem() helper function which calls the sys_bpf
      syscall to update elements in bpf maps. Upcoming patches will use it to
      adjust data in map through the perf command line.
      Signed-off-by: NHe Kuang <hekuang@huawei.com>
      Cc: Alexei Starovoitov <ast@kernel.org>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1448372181-151723-4-git-send-email-wangnan0@huawei.comSigned-off-by: NWang Nan <wangnan0@huawei.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      43798bf3
    • J
      perf evlist: Display WEIGHT sample type bit · dcdd184b
      Jiri Olsa 提交于
      Adding WIEGHT bit_name call to display sample_type properly.
      
        $ perf evlist -v
        cpu/mem-loads/pp: ...SNIP... sample_type: IP|TID|TIME|ADDR|ID|CPU|DATA_SRC|WEIGHT ...
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1448465815-27404-2-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      dcdd184b
    • J
      perf stat: Clear sample_(type|period) for counting · 6acd8e92
      Jiri Olsa 提交于
      Clear sample_(type|period) for counting, as it only confuses debug
      output with unwanted sampling details:
      
      Before:
      
        $ sudo perf stat -e 'raw_syscalls:sys_enter' -vv ls
        ------------------------------------------------------------
        perf_event_attr:
          type                             2
          size                             112
          config                           0x11
          { sample_period, sample_freq }   1
          sample_type                      TIME|CPU|PERIOD|RAW
          read_format                      TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
          disabled                         1
          inherit                          1
          enable_on_exec                   1
          exclude_guest                    1
        ...
      
      After:
        $ sudo perf stat -e 'raw_syscalls:sys_enter' -vv ls
        ------------------------------------------------------------
        perf_event_attr:
          type                             2
          size                             112
          config                           0x11
          read_format                      TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
          disabled                         1
          inherit                          1
          enable_on_exec                   1
          exclude_guest                    1
        ...
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1448465815-27404-1-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      6acd8e92
    • E
      perf symbols: Add the path to vmlinux.debug · f55ae954
      Ekaterina Tumanova 提交于
      Currently when debuginfo is separated to vmlinux.debug, it's contents
      get ignored. Let's change that and add it to the vmlinux_path list.
      Signed-off-by: NEkaterina Tumanova <tumanova@linux.vnet.ibm.com>
      Acked-by: NAlexander Yarygin <yarygin@linux.vnet.ibm.com>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1448469166-61363-3-git-send-email-tumanova@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      f55ae954
    • E
      perf symbols: Refactor vmlinux_path__init() to ease path additions · aac48647
      Ekaterina Tumanova 提交于
      Refactor vmlinux_path__init() to ease subsequent additions of new
      vmlinux locations.
      Signed-off-by: NEkaterina Tumanova <tumanova@linux.vnet.ibm.com>
      Acked-by: NAlexander Yarygin <yarygin@linux.vnet.ibm.com>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1448469166-61363-2-git-send-email-tumanova@linux.vnet.ibm.com
      [ Rename vmlinux_path__update() to vmlinux_path__add() ]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      aac48647
    • J
      tools build: Use fixdep with OUTPUT path prefix · 5e50426d
      Jiri Olsa 提交于
      Adding OUTPUT path prefix for fixdep target so we use it properly in out
      of tree builds.
      
      If the fixdep already existed in the tree, the out of tree build would
      see it already exist and did not build the out of tree version, as
      reported by Arnaldo:
      
        [acme@zoo linux]$ make O=/tmp/build/perf -C tools/perf
        make: Entering directory '/home/git/linux/tools/perf'
          BUILD:   Doing 'make -j4' parallel build
        make[2]: Nothing to be done for 'fixdep'.
        make: Leaving directory '/home/git/linux/tools/perf'
      Reported-and-Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/20151126185055.GC19410@krava.brq.redhat.com
      [ Fixed conflict with 5725dd8f ("tools build: Clean CFLAGS and LDFLAGS for fixdep") ]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      5e50426d
    • J
      perf script: Pass perf_script into process_event · 809e9423
      Jiri Olsa 提交于
      Passing perf_script struct into process_event function, so we could
      process configuration data for event printing.
      
      It will be used in following patch to get event name string width.
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20151126175521.GA18979@krava.brq.redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      809e9423
    • Y
      perf tools: Correctly identify anon_hugepage when generating map (v2) · b2be5451
      Yannick Brosseau 提交于
      When parsing /proc/xxx/maps, the sscanf in perf_event__synthesize_mmap_events
      truncate the map name at the space in "/anon_hugepage (deleted)".
      
      is_anon_memory() then only receives the string "/anon_hugepage" and does
      not detect it.  We change is_anon_memory() to only compare the first
      part of the string, effectively ignoring if " (deleted)" is there.
      Signed-off-by: NYannick Brosseau <scientist@fb.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Joshua Zhu <zhu.wen-jie@hp.com>
      Cc: kernel-team@fb.com
      Link: http://lkml.kernel.org/r/1448538152-2898-1-git-send-email-scientist@fb.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      b2be5451
    • W
      perf machine: Adjust dso->long_name for offline module · c03d5184
      Wang Nan 提交于
      Something unexpected may happen if copy statically linked perf to a
      production environment:
      
        # ./perf probe -m ./mymodule.ko my_func
        [mymodule] with build id 326ab42550ef3d24944f53c817533728367effeb not found, continuing without symbols
        Failed to find symbol my_func in /home/wangnan/kmodule/mymodule.ko
          Error: Failed to add events.
        # ./perf buildid-cache -a ./mymodule.ko
        # ./perf probe -m ./mymodule.ko my_func
        Added new event:
          probe:my_func        (on my_func in /home/wangnan/kmodule/mymodule.ko)
      
        You can now use it in all perf tools, such as:
      
        	perf record -e probe:my_func -aR sleep 1
      
      Where:
      
        # ldd ./perf
       	not a dynamic executable
        # strace -e open ./perf probe -m ./mymodule.ko my_func
        ...
        open("/home/wangnan/kmodule/mymodule.ko", O_RDONLY) = 3
        open("/home/wangnan/kmodule/../lib64/elfutils/libebl_x86_64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
        ...
        open("/lib64/tls/libebl_x86_64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
        open("/lib64/libebl_x86_64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
        open("/usr/lib64/tls/libebl_x86_64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
        open("/usr/lib64/libebl_x86_64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
        open("[mymodule]", O_RDONLY)            = -1 ENOENT (No such file or directory)
        open("/home/wangnan/.debug/.build-id/32/6ab42550ef3d24944f53c817533728367effeb", O_RDONLY) = -1 ENOENT (No such file or directory)
        open("[mymodule]", O_RDONLY)            = -1 ENOENT (No such file or directory)
      
      In the above example, probe fails before we put the module into
      buildid-cache. However, user would expect it success in both case
      because perf is able to find probe points actually.
      
      The reason is because perf won't utilize module's full path if it failed
      to open debuginfo. In:
      
           convert_to_probe_trace_events ->
              find_probe_trace_events_from_map ->
                  get_target_map ->
                      kernel_get_module_map ->
                          machine__findnew_module_map ->
                              map_groups__find_by_name
      
      map_groups__find_by_name() is able to find the map of that module, but
      this information is found from /proc/module before it knows the real
      path of the offline module. Therefore, the map->dso->long_name is set to
      something like '[mymodule]', which prevent dso__load() find the real
      path of the module file.
      
      In another aspect, if dso__load() can get the offline module through
      buildid cache, it can read symble table from that ko. Even if debuginfo
      is not available, 'perf probe' can success if the '.symtab' can be
      found.
      
      This patch improves machine__findnew_module_map(): when dso->long_name
      is leading with '[' (doesn't find path of module when parsing
      /proc/modules), fixes it by dso__set_long_name(), so following
      dso__load() is possible to find the symbol table.
      
      This patch won't interfere with buildid matching. Here is the test
      result:
      
        # ./perf probe -m ./mymodule.ko my_func
        Added new event:
          probe:my_func        (on my_func in /home/wangnan/kmodule/mymodule.ko)
      
        You can now use it in all perf tools, such as:
      
        	perf record -e probe:my_func -aR sleep 1
      
        # ./perf probe -d '*'
        Removed event: probe:my_func
        # mv ./mymodule.{ko,.bak}
        # mv ./moduleb.ko mymodule.ko
        # ./perf probe -m ./mymodule.ko my_func
        /home/wangnan/kmodule/mymodule.ko with build id 326ab42550ef3d24944f53c817533728367effeb not found, continuing without symbols
        Failed to find symbol my_func in /home/wangnan/kmodule/mymodule.ko
          Error: Failed to add events.
      
        # ./perf probe -v -m ./mymodule.ko my_func
        probe-definition(0): my_func
        symbol:my_func file:(null) line:0 offset:0 return:0 lazy:(null)
        0 arguments
        Could not open debuginfo. Try to use symbols.
        symsrc__init: build id mismatch for /home/wangnan/kmodule/mymodule.ko.
        /home/wangnan/kmodule/mymodule.ko with build id 326ab42550ef3d24944f53c817533728367effeb not found, continuing without symbols
        Failed to find symbol my_func in /home/wangnan/kmodule/mymodule.ko
          Error: Failed to add events. Reason: No such file or directory (Code: -2)
      Signed-off-by: NWang Nan <wangnan0@huawei.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1448510397-187965-1-git-send-email-wangnan0@huawei.com
      [ Renamed adjust_dso_long_name() do dso__adjust_kmod_long_name() ]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      c03d5184
    • J
      perf build: Fix traceevent plugins build race · 67befc65
      Jiri Olsa 提交于
      Ingo reported following build failure:
      
        $ make clean install
        ...
          CC       plugin_kmem.o
        fixdep: error opening depfile: ./.plugin_hrtimer.o.d: No such file or directory
        /home/mingo/tip/tools/build/Makefile.build:77: recipe for target
        'plugin_hrtimer.o' failed
        make[3]: *** [plugin_hrtimer.o] Error 2
        Makefile:189: recipe for target 'plugin_hrtimer-in.o' failed
        make[2]: *** [plugin_hrtimer-in.o] Error 2
        Makefile.perf:414: recipe for target 'libtraceevent_plugins' failed
        make[1]: *** [libtraceevent_plugins] Error 2
        make[1]: *** Waiting for unfinished jobs....
      
      Currently we have the install-traceevent-plugins target being dependent
      on $(LIBTRACEEVENT), which will actualy not build any plugin. So the
      install-traceevent-plugins target itself will try to build plugins,
      but..
      
      Plugins built is also triggered by perf build itself via
      libtraceevent_plugins target.
      
      This might cause a race having one make thread removing temp files from
      another and result in above error. Fixing this by having proper plugins
      build dependency before installing plugins.
      Reported-and-Tested-by: N: Ingo Molnar <mingo@kernel.org>
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1448546044-28973-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      67befc65
    • J
      perf script: Remove default_scripting_ops · 2aaecfc5
      Jiri Olsa 提交于
      The default script handler (the one that displays samples on screen) is
      implemented scripting_ops instance with process_event callback.
      
      This way we can't pass any script config into display function, because
      we don't want perl or python handlers to be depended on perf script
      internals.
      
      Removing the default_scripting_ops and calling process event function
      directly. This way it's possible to pass perf_script struct and process
      configuration data in following commit.
      Signed-off-by: NJiri Olsa <jolsa@kernel.org>
      Acked-by: NDavid Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/1448546125-29245-1-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      2aaecfc5
    • N
      perf top: Fix freeze on --call-graph flat/folded · 0356218a
      Namhyung Kim 提交于
      The callchain rbtree is rebuilt periodically, so it needs to
      reinitialize the root everytime.  Otherwise it can be stuck in the
      rbtree insertion with stale pointers.
      Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Kan Liang <kan.liang@intel.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1448521700-32062-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      0356218a
    • N
      perf callchain: Honor hide_unresolved · b49a8fe5
      Namhyung Kim 提交于
      If user requested to hide unresolved entries, skip unresolved callchains
      as well as hist entries.
      Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
      Acked-by: NJiri Olsa <jolsa@kernel.org>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Kan Liang <kan.liang@intel.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1448521700-32062-3-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      b49a8fe5