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* Merge branch 'perf/core' of ↵Ingo Molnar2011-08-103-12/+50
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
| * perf symbols: Check '/tmp/perf-' symbol file ownershipPekka Enberg2011-08-091-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | The external symbol files are generated by JIT compilers, for example, but we need to make sure they're ours before injecting them to 'perf report'. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1312919658-17158-1-git-send-email-penberg@kernel.org Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf sched: Usage leftover from trace -> script renameJiri Olsa2011-08-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The 'perf sched' command usage still showing 'trace' command instead of the 'script' command. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110809124651.GD2056@jolsa.brq.redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf sched: Do not delete session object prematurelyJiri Olsa2011-08-091-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The session object is released prematurely when processing events for latency command. The session's thread objects are used within the output_lat_thread function. Runnning following commands: # perf sched record # perf sched latency the latter displays incorrect data and might cause access violation. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1312837414-3819-1-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Check $HOME/.perfconfig ownershipArnaldo Carvalho de Melo2011-08-091-4/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just like we do already for perf.data files. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Christian Ohm <chr.ohm@gmx.net> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jonathan Nieder <jrnieder@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-qgokmxsmvppwpc5404qhyk7e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'perf/core' of ↵Ingo Molnar2011-08-095-23/+46
|\ \ | |/ | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
| * perf tools: Add support to install perf python extensionJiri Olsa2011-08-082-7/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding install-python_ext target to install python extension related files. Installation directory is governed by python distutils package and follows the DESTDIR variable settings. Also moving python extension build output into '$(O)python_ext_build' directory and making it configurable via PYTHON_EXTBUILD variable. Keeping the '$(O)python/perf.so' file, so it could be used for testing as of until now. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110722113307.GA1931@jolsa.brq.redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: do not look at ./config for configurationJonathan Nieder2011-08-081-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In addition to /etc/perfconfig and $HOME/.perfconfig, perf looks for configuration in the file ./config, imitating git which looks at $GIT_DIR/config. If ./config is not a perf configuration file, it fails, or worse, treats it as a configuration file and changes behavior in some unexpected way. "config" is not an unusual name for a file to be lying around and perf does not have a private directory dedicated for its own use, so let's just stop looking for configuration in the cwd. Callers needing context-sensitive configuration can use the PERF_CONFIG environment variable. Requested-by: Christian Ohm <chr.ohm@gmx.net> Cc: 632923@bugs.debian.org Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Christian Ohm <chr.ohm@gmx.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110805165838.GA7237@elie.gateway.2wire.net Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Make clean leaves some filesKusanagi Kouichi2011-08-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Use LIB_OBJS and BUILTIN_OBJS for .o files. LIB_FILE is already prefixed with OUTPUT. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110807083932.9C0E514C03B@msa103.auone-net.jp Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf lock: Dropping unsupported ':r' modifierZhu Yanhai2011-08-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks to me like the :r modifier is not supported anymore, so remove it from the list of events. Without this fix 'perf lock record' doesn't work. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Zhu Yanhai <gaoyang.zyh@taobao.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1312035232-9534-1-git-send-email-gaoyang.zyh@taobao.com Signed-off-by: Zhu Yanhai <gaoyang.zyh@taobao.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Fix coredump introduced by probe module optionJovi Zhang2011-08-081-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf will coredump if the user doesn't give the "-m" option in probe command, this patch fixes it. [root@localhost perf]# ./perf probe --add='PROBE' Segmentation fault (core dumped) Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311602888-2389-1-git-send-email-bookjovi@gmail.com Signed-off-by: Jovi Zhang <bookjovi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'perf/core' of ↵Ingo Molnar2011-08-056-32/+140
|\ \ | |/ | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
| * perf report: Use ui__warning in some more placesArnaldo Carvalho de Melo2011-08-031-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that we get a proper warning in the TUI in cases like: $ perf report --stdio -g fractal,0.5,caller --sort pid Selected -g but no callchain data. Did you call 'perf record' without -g? $ The --stdio case is ok because it uses fprintf, ui__warning is needed to figure out if --stdio or --tui is being used. Cc: Arun Sharma <asharma@fb.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sam Liao <phyomh@gmail.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ag9fz2wd17mbbfjsbznq1wms@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tablesArnaldo Carvalho de Melo2011-07-251-3/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So those friggin "spurious" PERF_RECORD_MMAP events were actually a brain fart copy'n'paste error in the python binding, doh. I.e. they weren't MMAPs, just SAMPLEs. Fix it by providing routines for these events instead of using the MMAP ones. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-b0rc8y5jd03f9f11kftodvkm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf evlist: Introduce 'disable' methodArnaldo Carvalho de Melo2011-07-253-17/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To remove the last case of access to the FD() macro outside the library. Inspired by a patch by Borislav that moved the FD() macro to util.h, for namespace concerns I rather preferred to constrain it to ev{sel,list}.c. Cc: Borislav Petkov <bp@amd64.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-qn893qsstcg366tkucu649qj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf buildid-cache: Zero out buffer of filenames when adding/removing buildidHan Pingtian2011-07-221-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The readlink() function doesn't append a null byte to buf. So we should zero out buf with zalloc(). Or we'll see sometimes error like this: [root@intel-s3e36-01]~# /usr/bin/perf buildid-cache -a /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko -v Adding f64ba8efd5f53c7ad332fc17db1d21de309038e1 /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko: Ok [root@intel-s3e36-01]~# /usr/bin/perf buildid-cache -r /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko -v Removing f64ba8efd5f53c7ad332fc17db1d21de309038e1 /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko: FAIL /lib/modules/2.6.32-130.el6.x86_64/kernel/crypto/twofish_common.ko wasn't in the cache The change in build_id_cache__add_s() is a defense. Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20110718031314.GA5802@hpt.nay.redhat.com Signed-off-by: Han Pingtian <phan@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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*---. \ Merge branches 'x86-urgent-for-linus', 'core-debug-for-linus', ↵Linus Torvalds2011-07-231-1/+4
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'irq-core-for-linus' and 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: um: Make rwsem.S depend on CONFIG_RWSEM_XCHGADD_ALGORITHM * 'core-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debug: Make CONFIG_EXPERT select CONFIG_DEBUG_KERNEL to unhide debug options * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Remove unused CHECK_IRQ_PER_CPU() * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools, x86: Fix 32-bit compile on 64-bit system
| | | * perf tools, x86: Fix 32-bit compile on 64-bit systemDavid Ahern2011-07-211-1/+4
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Builds for 32-bit perf binaries on a 64-bit host currently fail with this error: [...] bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages: bench/../../../arch/x86/lib/memcpy_64.S:29: Error: bad register name `%rdi' bench/../../../arch/x86/lib/memcpy_64.S:34: Error: invalid instruction suffix for `movs' bench/../../../arch/x86/lib/memcpy_64.S:50: Error: bad register name `%rdi' bench/../../../arch/x86/lib/memcpy_64.S:61: Error: bad register name `%rdi' ... The problem is the detection of the host arch without considering passed in flags. This change fixes 32-bit builds via: make EXTRA_CFLAGS=-m32 and 64-bit builds still reference the memcpy_64.S. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1310420304-21452-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf tools: Make test use the preset debugfs pathJiri Olsa2011-07-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use preset debugfs path instead of hardcoded one. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1310635534-4013-4-git-send-email-jolsa@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf tools: Add automated tests for events parsingJiri Olsa2011-07-211-0/+245
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding builtin test for parse_events function, which is responsible for parsing/processing "-e" option for stat/top/record commands. This new test will run within the builtin test command suite (perf test). One or several tests were added for each type of event. More tests could be added easily if needed. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1310635534-4013-3-git-send-email-jolsa@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf tools: De-opt the parse_events functionJiri Olsa2011-07-215-14/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Moving out the option parameter from parse_events function, and adding new parse_events_option function instead. The option parameter is used only to carry "struct perf_evlist" pointer for chaining new events. Putting it away, enable us to call parse_events from other places without using the option parameter. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1310635534-4013-2-git-send-email-jolsa@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf script: Fix display of IP address for non-callchain pathDavid Ahern2011-07-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Non-callchain path is using al.addr which prints as: openssl 14564 17672.003587: 7862d _x86_64_AES_encrypt_compact This should be sample->ip to print as: openssl 14564 17672.003587: 3f7867862d _x86_64_AES_encrypt_compact Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: acme@ghostprotocols.net Cc: peterz@infradead.org Cc: paulus@samba.org Link: http://lkml.kernel.org/r/1306768587-15376-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf tools: Fix endian conversion reading event attr from file headerDavid Ahern2011-07-213-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The perf_event_attr struct has two __u32's at the top and they need to be swapped individually. With this change I was able to analyze a perf.data collected in a 32-bit PPC VM on an x86 system. I tested both 32-bit and 64-bit binaries for the Intel analysis side; both read the PPC perf.data file correctly. -v2: - changed the existing perf_event__attr_swap() to swap only elements of perf_event_attr and exported it for use in swapping the attributes in the file header - updated swap_ops used for processing events Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: acme@ghostprotocols.net Cc: peterz@infradead.org Cc: paulus@samba.org Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1310754849-12474-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf tools: Add missing 'node' alias to the hw_cache[] arrayJiri Olsa2011-07-211-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add "node" as a simple alias for NODE cache events. The addition of NODE cache events broke the parse_alias function, so any mismatched event caused the segfault, like: # ./perf stat -e krava ls The hw_cache/hw_cache_op/hw_cache_result arrays needs to follow PERF_COUNT_HW_CACHE_*MAX enums. Adding those MAXs to be size of those arrays, so possible ommision in future wil not lead to segfault. Adding read/write/prefetch as allowed operations for node cache event. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: acme@redhat.com Link: http://lkml.kernel.org/r/20110713205818.GB7827@jolsa.brq.redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf probe: Support adding probes on offline kernel modulesMasami Hiramatsu2011-07-153-12/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support adding probes on offline kernel modules. This enables perf-probe to trace kernel-module init functions via perf-probe. If user gives the path of module with -m option, perf-probe expects the module is offline. This feature works with --add, --funcs, and --vars. E.g) # perf probe -m /lib/modules/`uname -r`/kernel/fs/btrfs/btrfs.ko \ -a "extent_io_init:5 extent_state_cache" Add new events: probe:extent_io_init (on extent_io_init:5 with extent_state_cache) probe:extent_io_init_1 (on extent_io_init:5 with extent_state_cache) You can now use it on all perf tools, such as: perf record -e probe:extent_io_init_1 -aR sleep 1 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072751.6528.10230.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf probe: Add probed module in front of functionMasami Hiramatsu2011-07-152-9/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add probed module name and ":" in front of function name if -m module option is given. In the result, the symbol name passed to kprobe-tracer becomes MODULE:FUNCTION, so that kallsyms can solve it as a symbol in the module correctly. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072745.6528.26416.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf probe: Introduce debuginfo to encapsulate dwarf informationMasami Hiramatsu2011-07-153-136/+182
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce debuginfo to encapsulate dwarf information. This new object allows us to reuse and expand debuginfo easily. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072739.6528.12438.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf-probe: Move dwarf library routines to dwarf-aux.{c, h}Masami Hiramatsu2011-07-155-523/+768
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move dwarf library related routines to dwarf-aux.{c,h}. This includes several minor changes. - Add simple documents for each API. - Rename die_find_real_subprogram() to die_find_realfunc() - Rename line_walk_handler_t to line_walk_callback_t. - Minor cleanups. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072727.6528.57647.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf probe: Remove redundant dwarf functionsMasami Hiramatsu2011-07-151-37/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since there are dwarf_bitsize, dwarf_bitoffset and dwarf_bytesize defined in libdw, we don't need die_get_bit_size, die_get_bit_offset and die_get_byte_size anymore. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072721.6528.2747.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf probe: Move strtailcmp to string.cMasami Hiramatsu2011-07-153-15/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since strtailcmp() is enough generic, it should be defined in string.c. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072715.6528.10677.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf probe: Rename DIE_FIND_CB_FOUND to DIE_FIND_CB_ENDMasami Hiramatsu2011-07-151-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since die_find/walk* callbacks use DIE_FIND_CB_FOUND for both of failed and found cases, it should be "END" instead "FOUND" for avoiding confusion. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/20110627072709.6528.45706.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf: Robustify proc and debugfs file recordingSonny Rao2011-07-141-91/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While attempting to create a timechart of boot up I found perf didn't tolerate modules being loaded/unloaded. This patch fixes this by reading the file once and then writing the size read at the correct point in the file. It also simplifies the code somewhat. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Sonny Rao <sonnyrao@chromium.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Link: http://lkml.kernel.org/r/10011.1310614483@neuling.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | perf report/annotate/script: Add option to specify a CPU rangeAnton Blanchard2011-07-058-0/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an option to perf report/annotate/script to specify which CPUs to operate on. This enables us to take a single system wide profile and analyse each CPU (or group of CPUs) in isolation. This was useful when profiling a multiprocess workload where the bottleneck was on one CPU but this was hidden in the overall profile. Per process and per thread breakdowns didn't help because multiple processes were running on each CPU and no single process consumed an entire CPU. The patch converts the list of CPUs returned by cpu_map__new into a bitmap for fast lookup. I wanted to use -C to be consistent with perf top/record/stat, but unfortunately perf report already uses -C <comms>. v2: Incorporate suggestions from David Ahern: - Added -c to perf script - Check that SAMPLE_CPU is set when -c is used - Update documentation v3: Create perf_session__cpu_bitmap() Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: David Ahern <dsahern@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/20110704215750.11647eb9@kryten Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | perf stat: Add noise output for csv modeZhengyu He2011-07-011-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, when you want perf-stat to output the statistics in csv mode, no information of the noise will be printed out. For example right now we output this --repeat information: ./perf stat -r3 -x, sleep 1 1.164789,task-clock 8,context-switches 0,CPU-migrations 219,page-faults 3337800,cycles With this patch, the output will be appended with an additional entry for the noise value: ./perf stat -r3 -x, sleep 1 1.164789,task-clock,3.75% 8,context-switches,75.00% 0,CPU-migrations,100.00% 219,page-faults,0.00% 3337800,cycles,3.36% Signed-off-by: Zhengyu He <zhengyuh@google.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Stephane Eranian <eranian@google.com> Cc: Venkatesh Pallipadi <venki@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1308861942-4945-1-git-send-email-zhengyuh@google.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'perf/core' of ↵Ingo Molnar2011-07-017-144/+169
|\ \ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core
| * | | perf tools: Only display parent field if explictly sortedFrederic Weisbecker2011-06-301-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to display the parent field if the parent sorting machinery is only used for parent filtering (as in "-p foo"). However if parent filtering is used in combination with explicit parent sorting ( -s parent), we want to display it. Result with: perf report -p kernel_thread -s parent Before: # Overhead Parent symbol # ........ ............. # 0.07% | --- ioread8 ata_sff_check_status ata_sff_tf_load ata_sff_qc_issue ata_bmdma_qc_issue ata_qc_issue ata_scsi_translate ata_scsi_queuecmd scsi_dispatch_cmd scsi_request_fn __blk_run_queue __make_request generic_make_request submit_bio submit_bh journal_submit_commit_record jbd2_journal_commit_transaction kjournald2 kthread kernel_thread_helpe After: # Overhead Parent symbol # ........ ............. # 0.07% kernel_thread_helper | --- ioread8 ata_sff_check_status ata_sff_tf_load ata_sff_qc_issue ata_bmdma_qc_issue ata_qc_issue ata_scsi_translate ata_scsi_queuecmd scsi_dispatch_cmd scsi_request_fn __blk_run_queue __make_request generic_make_request submit_bio submit_bh journal_submit_commit_record jbd2_journal_commit_transaction kjournald2 kthread kernel_thread_helper Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * | | perf tools: Allow sort dimensions to be registered more than onceFrederic Weisbecker2011-06-301-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that the parent sort dimension can be registered twice: once if we add it as an explicit sort dimension (-s parent) and twice if we request a parent filter (-p foo). We'll have only one parent sort dimension in the end but this allows to override the default parent filter with we gave in "-p" option. The goal of this is to prepare to allow the use of "-s parent" and "-p foo" at the same time, ie: sort by filtered parent. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * | | perf tools: Don't display ignored entries on stdio uiFrederic Weisbecker2011-06-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As for newt ui, don't display entries that have been marked as ignored. The practical current effect of this is to make parent filtering really working. Before, entries that were ignored were given a null parent but were still displayed. This resulted in some weird effects: # Overhead Command Shared Object Symbol # ........ ........... ................. ............ # ^A | --- __lock_acquire | |--95.97%-- lock_acquire | | | |--30.75%-- _raw_spin_lock Discard these from the stdio display. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * | | perf tools: Remove sort print helpers declarationsFrederic Weisbecker2011-06-301-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These are probably some old leftovers. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * | | perf tools: Make sort operations staticFrederic Weisbecker2011-06-302-120/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These don't need to be globally visible. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Sam Liao <phyomh@gmail.com>
| * | | perf tools: Add inverted call graph report support.Sam Liao2011-06-305-11/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add "caller/callee" option to support inverted butterfly report, in the inverted report (with caller option), the call graph start from the callee's ancestor. Users can use such view to catch system's performance bottleneck from a sysprof like view. Using this option with specified sort order like pid gives us high level view of call graph statistics. Also add "-G" alias for inverted call graph. Signed-off-by: Sam Liao <phyomh@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | | | Merge commit 'v3.0-rc5' into perf/coreIngo Molnar2011-07-013-2/+3
|\ \ \ \ | |/ / / |/| | / | | |/ | |/| | | | Merge reason: Pick up the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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| *---. \ Merge branches 'perf-urgent-for-linus', 'sched-urgent-for-linus', ↵Linus Torvalds2011-06-191-1/+1
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'timers-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tools/perf: Fix static build of perf tool tracing: Fix regression in printk_formats file * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: Make watchdog robust vs. interruption timerfd: Fix wakeup of processes when timer is cancelled on clock change * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, MAINTAINERS: Add x86 MCE people x86, efi: Do not reserve boot services regions within reserved areas
| | * | | | tools/perf: Fix static build of perf toolMathias Krause2011-06-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To build a statically linked version of the perf tool all needed libraries must be added in the correct order to get the symbols resolved. Currently this is broken when, e.g. python or newt support is enabled -- libpython needs libpthread which is an unconditional link dependency of the perf tool; libslang needs libm, another unconditional dependency. To solve the problem in the long run without the need to keep track of transitive library dependencies, simply make the linker look at the EXTLIBS multiple times until it has all symbols resolved. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/1308171818-20370-1-git-send-email-minipli@googlemail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2011-06-191-0/+1
| |\ \ \ \ \ | | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Move RCU_BOOST #ifdefs to header file rcu: use softirq instead of kthreads except when RCU_BOOST=y rcu: Use softirq to address performance regression rcu: Simplify curing of load woes
| | * | | | rcu: Use softirq to address performance regressionShaohua Li2011-06-141-0/+1
| | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a26ac2455ffcf3(rcu: move TREE_RCU from softirq to kthread) introduced performance regression. In an AIM7 test, this commit degraded performance by about 40%. The commit runs rcu callbacks in a kthread instead of softirq. We observed high rate of context switch which is caused by this. Out test system has 64 CPUs and HZ is 1000, so we saw more than 64k context switch per second which is caused by RCU's per-CPU kthread. A trace showed that most of the time the RCU per-CPU kthread doesn't actually handle any callbacks, but instead just does a very small amount of work handling grace periods. This means that RCU's per-CPU kthreads are making the scheduler do quite a bit of work in order to allow a very small amount of RCU-related processing to be done. Alex Shi's analysis determined that this slowdown is due to lock contention within the scheduler. Unfortunately, as Peter Zijlstra points out, the scheduler's real-time semantics require global action, which means that this contention is inherent in real-time scheduling. (Yes, perhaps someone will come up with a workaround -- otherwise, -rt is not going to do well on large SMP systems -- but this patch will work around this issue in the meantime. And "the meantime" might well be forever.) This patch therefore re-introduces softirq processing to RCU, but only for core RCU work. RCU callbacks are still executed in kthread context, so that only a small amount of RCU work runs in softirq context in the common case. This should minimize ksoftirqd execution, allowing us to skip boosting of ksoftirqd for CONFIG_RCU_BOOST=y kernels. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Tested-by: "Alex,Shi" <alex.shi@intel.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | | | Merge branch 'rc-fixes' of ↵Linus Torvalds2011-06-161-1/+1
| |\ \ \ \ | | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: kbuild: Call depmod.sh via shell perf: clear out make flags when calling kernel make kernelver
| | * | | perf: clear out make flags when calling kernel make kernelverAndy Whitcroft2011-06-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When generating the perf version from the kernel version using 'make kernelver' it is necessary to clear out any MAKEFLAGS otherwise they may trigger additional output which pollute the contents. Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | | | Merge commit 'v3.0-rc3' into perf/coreIngo Molnar2011-06-161-6/+1
|\ \ \ \ \ | |/ / / / | | | | | | | | | | | | | | | | | | | | Merge reason: add the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | Merge branch 'rc-fixes' of ↵Linus Torvalds2011-06-091-6/+1
| |\ \ \ \ | | |/ / / | | | | / | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: perf: Use make kernelversion instead of parsing the Makefile kbuild: Hack for depmod not handling X.Y versions kbuild: Move depmod call to a separate script kbuild: Fix <linux/version.h> for empty SUBLEVEL or PATCHLEVEL kbuild: Fix KERNELVERSION for empty SUBLEVEL or PATCHLEVEL kbuild: silence Nothing to be done for 'all' message
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