1. 20 Aug, 2015 3 commits
    • Ingo Molnar's avatar
      Merge tag 'perf-core-for-mingo' of... · dd2281be
      Ingo Molnar authored
      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:
      
        - Support Intel PT in several tools, enabling the use of the processor trace
          feature introduced in Intel Broadwell processors: (Adrian Hunter)
      
      	 # dmesg | grep Performance
      	 # [0.188477] Performance Events: PEBS fmt2+, 16-deep LBR, Broadwell events, full-width counters, Intel PMU driver.
      	 # perf record -e intel_pt//u -a sleep 1
      	 [ perf record: Woken up 1 times to write data ]
      	 [ perf record: Captured and wrote 0.216 MB perf.data ]
      	 # perf script # then navigate in the tool output to some area, like this one:
      	 184 1030 dl_main (/usr/lib64/ld-2.17.so) => 7f21ba661440 dl_main (/usr/lib64/ld-2.17.so)
      	 185 1457 dl_main (/usr/lib64/ld-2.17.so) => 7f21ba669f10 _dl_new_object (/usr/lib64/ld-2.17.so)
      	 186 9f37 _dl_new_object (/usr/lib64/ld-2.17.so) => 7f21ba677b90 strlen (/usr/lib64/ld-2.17.so)
      	 187 7ba3 strlen (/usr/lib64/ld-2.17.so) => 7f21ba677c75 strlen (/usr/lib64/ld-2.17.so)
      	 188 7c78 strlen (/usr/lib64/ld-2.17.so) => 7f21ba669f3c _dl_new_object (/usr/lib64/ld-2.17.so)
      	 189 9f8a _dl_new_object (/usr/lib64/ld-2.17.so) => 7f21ba65fab0 calloc@plt (/usr/lib64/ld-2.17.so)
      	 190 fab0 calloc@plt (/usr/lib64/ld-2.17.so) => 7f21ba675e70 calloc (/usr/lib64/ld-2.17.so)
      	 191 5e87 calloc (/usr/lib64/ld-2.17.so) => 7f21ba65fa90 malloc@plt (/usr/lib64/ld-2.17.so)
      	 192 fa90 malloc@plt (/usr/lib64/ld-2.17.so) => 7f21ba675e60 malloc (/usr/lib64/ld-2.17.so)
      	 193 5e68 malloc (/usr/lib64/ld-2.17.so) => 7f21ba65fa80 __libc_memalign@plt (/usr/lib64/ld-2.17.so)
      	 194 fa80 __libc_memalign@plt (/usr/lib64/ld-2.17.so) => 7f21ba675d50 __libc_memalign (/usr/lib64/ld-2.17.so)
      	 195 5d63 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675e20 __libc_memalign (/usr/lib64/ld-2.17.so)
      	 196 5e40 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675d73 __libc_memalign (/usr/lib64/ld-2.17.so)
      	 197 5d97 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675e18 __libc_memalign (/usr/lib64/ld-2.17.so)
      	 198 5e1e __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675df9 __libc_memalign (/usr/lib64/ld-2.17.so)
      	 199 5e10 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba669f8f _dl_new_object (/usr/lib64/ld-2.17.so)
      	 200 9fc2 _dl_new_object (/usr/lib64/ld-2.17.so) =>  7f21ba678e70 memcpy (/usr/lib64/ld-2.17.so)
      	 201 8e8c memcpy (/usr/lib64/ld-2.17.so) => 7f21ba678ea0 memcpy (/usr/lib64/ld-2.17.so)
      
        - Fix annotation of vdso (Adrian Hunter)
      
        - Fix DWARF callchains in 'perf script' (Jiri Olsa)
      
        - Fix adding probes in kernel syscalls and listing which variables can be
          collected at kernel syscall function lines (Masami Hiramatsu)
      
      Build Fixes:
      
        - Fix 32-bit compilation error in util/annotate.c (Adrian Hunter)
      
        - Support static linking with libdw on Fedora 22 (Andi Kleen)
      
      Infrastructure changes:
      
        - Add a helper function to probe whether cpu-wide tracing is possible (Adrian Hunter)
      
        - Move vfs_getname storage to per thread area in 'perf trace' (Arnaldo Carvalho de Melo)
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      dd2281be
    • Ingo Molnar's avatar
    • Ingo Molnar's avatar
      Merge tag 'perf-urgent-for-mingo' of... · 19667649
      Ingo Molnar authored
      Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
      
      Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
      
        - Fix buildid processing done at the end of a 'perf record' session, a
          problem that happened in workloads involving lots of small short-lived
          processes.  That code was not asking the perf_session layer to order
          the events.
      
          Make the code more robust to handle some of the problems with such
          out-of-order events and fix 'perf record' to ask for ordered events
          on systems where we have perf_event_attr.sample_id_all.  (Adrian Hunter)
      
        - Show backtrace when handling a SIGSEGV in 'perf top --stdio' (Arnaldo Carvalho de Melo)
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      19667649
  2. 19 Aug, 2015 4 commits
  3. 18 Aug, 2015 2 commits
  4. 17 Aug, 2015 16 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · bf674028
      Linus Torvalds authored
      Pull rdma bugfix from Doug Ledford:
       "Bugfix in iw_cxgb4"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
        iw_cxgb4: gracefully handle unknown CQE status errors
      bf674028
    • Linus Torvalds's avatar
      Merge branch 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata · 4e7fca0d
      Linus Torvalds authored
      Pull libata fixes from Tejun Heo:
       "Three minor device-specific fixes and revert of NCQ autosense added
        during this -rc1.
      
        It turned out that NCQ autosense as currently implemented interferes
        with the usual error handling behavior.  It will be revisited in the
        near future"
      
      * 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
        ata: ahci_brcmstb: Fix misuse of IS_ENABLED
        sata_sx4: Check return code from pdc20621_i2c_read()
        Revert "libata: Implement NCQ autosense"
        Revert "libata: Implement support for sense data reporting"
        Revert "libata-eh: Set 'information' field for autosense"
        ata: ahci_brcmstb: Fix warnings with CONFIG_PM_SLEEP=n
      4e7fca0d
    • Linus Torvalds's avatar
      Merge branch 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup · e9ab22d2
      Linus Torvalds authored
      Pull cgroup fix from Tejun Heo:
       "A fix for a subtle bug introduced back during 3.17 cycle which
        interferes with setting configurations under specific conditions"
      
      * 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
        cpuset: use trialcs->mems_allowed as a temp variable
      e9ab22d2
    • Robert Baldyga's avatar
      dmaengine: fix balance of privatecnt inc/dec operations · 05aa1a77
      Robert Baldyga authored
      This patch increments privatecnt value and set DMA_PRIVATE in device
      caps in dma_request_slave_channel() function. This is needed to keep
      privatecnt increment/decrement balance.
      
      As function dma_release_channel() decrements privatecnt counter, we need
      to increment it when channel is requested. Otherwise privatecnt drops
      into negatives after few dma_release_channel() calls.
      Reported-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
      Signed-off-by: default avatarRobert Baldyga <r.baldyga@samsung.com>
      Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
      05aa1a77
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · a36304b9
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
       "This fixes the following issues:
      
         - a regression caused by the conversion of IPsec ESP to the new AEAD
           interface: ESN with authencesn no longer works because it relied on
           the AD input SG list having a specific layout which is no longer
           the case.  In linux-next authencesn is fixed properly and no longer
           assumes anything about the SG list format.  While for this release
           a minimal fix is applied to authencesn so that it works with the
           new linear layout.
      
         - fix memory corruption caused by bogus index in the caam hash code.
      
         - fix powerpc nx SHA hashing which could cause module load failures
           if module signature verification is enabled"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: caam - fix memory corruption in ahash_final_ctx
        crypto: nx - respect sg limit bounds when building sg lists for SHA
        crypto: authencesn - Fix breakage with new ESP code
      a36304b9
    • Adrian Hunter's avatar
      perf tools: Take Intel PT into use · 5efb1d54
      Adrian Hunter authored
      To record an AUX area, the weak function auxtrace_record__init() must be
      implemented.
      
      Equally to decode an AUX area, the AUX area tracing type must be added
      to the perf_event__process_auxtrace_info() function.
      
      This patch makes those two changes plus hooks up default config for the
      intel_pt PMU.  Also some brief documentation is provided for using the
      tools with intel_pt.
      
      Commiter note:
      
      E.g:
      
        [root@perf4 ~]# dmesg
        451 [0.405807] Performance Events: PEBS fmt2+, 16-deep LBR, Broadwell events, full-width counters, Intel PMU driver.
        [root@perf4 ~]# perf --version
        perf version 4.1.g53874a
        [root@perf4 ~]#  perf record -e intel_pt//u -a sleep 10
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.383 MB perf.data ]
        [root@perf4 ~]# perf evlist
        intel_pt//u
        sched:sched_switch
        dummy:u
        [root@perf4 ~]# perf report --stdio
        # To display the perf.data header info, please use --header/--header-only options.
        #
        #
        # Total Lost Samples: 0
        #
        # Samples: 0  of event 'intel_pt//u'
        # Event count (approx.): 0
        #
        # Overhead  Command  Shared Object  Symbol
        # ........  .......  .............  ......
        #
      
        # Samples: 393  of event 'sched:sched_switch'
        # Event count (approx.): 393
        #
        # Overhead  Command         Shared Object     Symbol
        # ........  ..............  ................  ..............
          49.62%  swapper         [kernel.vmlinux]  [k] __schedule
          10.69%  rcu_sched       [kernel.vmlinux]  [k] __schedule
           6.62%  rcuos/0         [kernel.vmlinux]  [k] __schedule
           5.60%  kworker/0:1     [kernel.vmlinux]  [k] __schedule
           3.56%  rcuos/3         [kernel.vmlinux]  [k] __schedule
           3.05%  kworker/u384:2  [kernel.vmlinux]  [k] __schedule
           2.54%  kworker/2:0     [kernel.vmlinux]  [k] __schedule
           2.54%  tuned           [kernel.vmlinux]  [k] __schedule
        <SNIP>
        # Samples: 0  of event 'dummy:u'
        # Event count (approx.): 0
        #
        # Overhead  Command  Shared Object  Symbol
        # ........  .......  .............  ......
      
        # Samples: 28  of event 'instructions:u'
        # Event count (approx.): 5030172
        #
        # Overhead  Command     Shared Object        Symbol
        # ........  ..........  ...................  ................................
        #
          21.43%  tuned       libpython2.7.so.1.0  [.] PyEval_EvalFrameEx
                       |
                       ---PyEval_EvalFrameEx
                          |
                          |--83.33%-- PyEval_EvalCodeEx
                          |          PyEval_EvalFrameEx
                          |          |
                          |          |--60.00%-- PyEval_EvalCodeEx
                          |          |          PyEval_EvalFrameEx
                          |          |          PyEval_EvalFrameEx
                          |          |
                          |           --40.00%-- PyEval_EvalFrameEx
                          |
                           --16.67%-- PyEval_EvalFrameEx
                                     PyEval_EvalCodeEx
                                     PyEval_EvalFrameEx
                                     PyEval_EvalCodeEx
                                     PyEval_EvalFrameEx
                                     PyEval_EvalFrameEx
      
          14.29%  tuned       libpython2.7.so.1.0  [.] _PyType_Lookup
                       |
                       ---_PyType_Lookup
                          _PyObject_GenericGetAttrWithDict
                          PyEval_EvalFrameEx
                          PyEval_EvalCodeEx
                          PyEval_EvalFrameEx
                          PyEval_EvalCodeEx
                          PyEval_EvalFrameEx
                          |
                          |--75.00%-- PyEval_EvalFrameEx
                          |
                           --25.00%-- PyEval_EvalCodeEx
                                     PyEval_EvalFrameEx
                                     PyEval_EvalFrameEx
      
           3.57%  irqbalance  irqbalance           [.] 0x0000000000004038
                  |
                  ---0x4038
                     0x4761
                     0x4761
                     0x4761
                     0x49f1
                     0x2295
      
           3.57%  irqbalance  libc-2.17.so         [.] __GI_____strtoull_l_internal
                  |
                  ---__GI_____strtoull_l_internal
                     0x6f49
                     0x229a
      
           3.57%  irqbalance  libc-2.17.so         [.] __strchrnul
                  |
                  ---__strchrnul
                     vfprintf
                     __vsprintf_chk
                     __sprintf_chk
                     0x2724
                     0x4038
                     0x2331
      
           3.57%  irqbalance  libc-2.17.so         [.] __strstr_sse42
                  |
                  ---__strstr_sse42
                     0x71e0
                     0x229f
      
        # And now to some userspace ftrace on uninstrumented binaries 8-) :
        # Hand edited to make it a bit more compact, replacing /home/acme/bin/perf
        # with /bin/perf:
      
        [root@perf4 ~]# perf script
           perf 8921 [3] 7.310889: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310889: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       481630 perf_evlist__enable (/bin/perf) => 4816d8 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       4816de perf_evlist__enable (/bin/perf) => 48164f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310889: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310889: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.310890: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310890: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310890: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310890: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310890: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310890: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310890: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.310893: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310893: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310893: 1 branches:u:       4816a8 perf_evlist__enable (/bin/perf) => 4815f8 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310893: 1 branches:u:       4815fe perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310893: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310893: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310893: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310893: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.310956: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310956: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       481630 perf_evlist__enable (/bin/perf) => 4816d8 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       4816de perf_evlist__enable (/bin/perf) => 48164f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310956: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310956: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.310961: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310961: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310961: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310961: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310961: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310961: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310961: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.310968: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310968: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310968: 1 branches:u:       4816a8 perf_evlist__enable (/bin/perf) => 4815f8 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310968: 1 branches:u:       4815fe perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310968: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.310968: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.310968: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.310968: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.311040: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.311040: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       481630 perf_evlist__enable (/bin/perf) => 4816d8 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       4816de perf_evlist__enable (/bin/perf) => 48164f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.311040: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.311040: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.311046: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.311046: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311046: 1 branches:u:       481694 perf_evlist__enable (/bin/perf) => 481614 perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311046: 1 branches:u:       481652 perf_evlist__enable (/bin/perf) => 48165f perf_evlist__enable (/bin/perf)
           perf 8921 [3] 7.311046: 1 branches:u:       481684 perf_evlist__enable (/bin/perf) => 41d250 ioctl@plt (/bin/perf)
           perf 8921 [3] 7.311046: 1 branches:u:       41d250 ioctl@plt (/bin/perf) => 7fcecadbf250 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.311046: 1 branches:u: 7fcecadbf255 __GI___ioctl (/usr/lib64/libc-2.17.so) => 0 [unknown] ([unknown])
           perf 8921 [3] 7.311050: 1 branches:u:            0 [unknown] ([unknown]) => 7fcecadbf257 __GI___ioctl (/usr/lib64/libc-2.17.so)
           perf 8921 [3] 7.311050: 1 branches:u: 7fcecadbf25f __GI___ioctl (/usr/lib64/libc-2.17.so) => 481689 perf_evlist__enable (/bin/perf)
      :
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-8-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      5efb1d54
    • Adrian Hunter's avatar
      perf tools: Add Intel PT support · 90e457f7
      Adrian Hunter authored
      Add support for Intel Processor Trace.
      
      Intel PT support fits within the new auxtrace infrastructure.  Recording
      is supporting by identifying the Intel PT PMU, parsing options and
      setting up events.
      
      Decoding is supported by queuing up trace data by cpu or thread and then
      decoding synchronously delivering synthesized event samples into the
      session processing for tools to consume.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-7-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      90e457f7
    • Adrian Hunter's avatar
      perf tools: Add Intel PT decoder · f4aa0819
      Adrian Hunter authored
      Add support for decoding an Intel Processor Trace.
      
      Intel PT trace data must be 'decoded' which involves walking the object
      code and matching the trace data packets.
      
      The decoder requests a buffer of binary data via a get_trace()
      call-back, which it decodes using instruction information which it gets
      via another call-back walk_insn().
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-6-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f4aa0819
    • Adrian Hunter's avatar
      perf tools: Add Intel PT log · 53af9284
      Adrian Hunter authored
      Add a facility to log Intel Processor Trace decoding.  The log is
      intended for debugging purposes only.
      
      The log file name is "intel_pt.log" and is opened in the current
      directory.  The log contains a record of all packets and instructions
      decoded and can get very large (10 MB would be a small one).
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-5-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      53af9284
    • Adrian Hunter's avatar
      perf tools: Add Intel PT instruction decoder · 237fae79
      Adrian Hunter authored
      Add support for decoding instructions for Intel Processor Trace.  The
      kernel x86 instruction decoder is copied for this.
      
      This essentially provides intel_pt_get_insn() which takes a binary
      buffer, uses the kernel's x86 instruction decoder to get details of the
      instruction and then categorizes it for consumption by an Intel PT
      decoder.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1439450095-30122-1-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      237fae79
    • Adrian Hunter's avatar
      perf tools: Add Intel PT packet decoder · a4e92590
      Adrian Hunter authored
      Add support for decoding Intel Processor Trace packets.
      
      This essentially provides intel_pt_get_packet() which takes a buffer of
      binary data and returns the decoded packet.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-3-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a4e92590
    • Adrian Hunter's avatar
      perf auxtrace: Add Intel PT as an AUX area tracing type · 55ea4ab4
      Adrian Hunter authored
      Add the Intel Processor Trace type constant PERF_AUXTRACE_INTEL_PT.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1437150840-31811-2-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      55ea4ab4
    • Adrian Hunter's avatar
      perf tools: Add a helper function to probe whether cpu-wide tracing is possible · 83509565
      Adrian Hunter authored
      Add a helper function to probe whether cpu-wide tracing is possible.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lkml.kernel.org/r/1439458857-30636-2-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      83509565
    • Adrian Hunter's avatar
      perf symbols: Fix annotation of vdso · f0ee3b46
      Adrian Hunter authored
      Older kernels attempt to prelink vdso to its virtual address.  To permit
      annotation using objdump, the map__rip_2objdump() calculation must
      result in that same address which we can infer from the start and offset
      of the text section.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Link: http://lkml.kernel.org/r/1439556606-11297-1-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f0ee3b46
    • Adrian Hunter's avatar
      perf annotate: Fix 32-bit compilation error in util/annotate.c · 3d7245b0
      Adrian Hunter authored
      Fix the following 32-bit compilation errors:
      
        util/annotate.c: In function ‘addr_map_symbol__account_cycles’:
        util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘u64’ [-Werror=format=]
          pr_debug2("BB with bad start: addr %lx start %lx sym %lx saddr %lx\n",
            ^
        util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘u64’ [-Werror=format=]
        util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 6 has type ‘u64’ [-Werror=format=]
      
      These were introduced by the patch:
      
      "perf report: Add infrastructure for a cycles histogram"
      
      Also change the 'saddr' variable from 'unsigned long' to 'u64'
      noting that theoretically we could be processing data captured
      on a 64-bit machine but processing it on a 32-bit machine.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Fixes: d4957633 ("perf report: Add infrastructure for a cycles histogram")
      Link: http://lkml.kernel.org/r/1439536294-18241-1-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      3d7245b0
    • Jiri Olsa's avatar
      perf script: Initialize callchain_param.record_mode · 7322d6c9
      Jiri Olsa authored
      Milian Wolff reported non functional DWARF unwind under perf script. The
      reason is that perf script does not properly configure
      callchain_param.record_mode, which is needed by unwind code.
      
      Stealing the code from report and leaving the place for more
      initialization code in a hope we could merge it with
      report__setup_sample_type one day.
      Reported-by: default avatarMilian Wolff <mail@milianw.de>
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Tested-by: default avatarMilian Wolff <milian.wolff@kdab.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/20150813071724.GA21322@krava.brq.redhat.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      7322d6c9
  5. 16 Aug, 2015 8 commits
  6. 15 Aug, 2015 5 commits
  7. 14 Aug, 2015 2 commits