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* perf tools: Build with frame pointerFrederic Weisbecker2011-01-06
| | | | | | | | | | | | | | | It seems that some gcc versions build by default with frame pointers and some others omit them. Just build the tools with frame pointers as the callchains can be an important part of the perf workflow. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <1294325513-14276-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Introduce event selectorsArnaldo Carvalho de Melo2011-01-03
| | | | | | | | | | | | | | | | | | | | | | | | Out of ad-hoc code and global arrays with hard coded sizes. This is the first step on having a library that will be first used on regression tests in the 'perf test' tool. [acme@felicio linux]$ size /tmp/perf.before text data bss dec hex filename 1273776 97384 5104416 6475576 62cf38 /tmp/perf.before [acme@felicio linux]$ size /tmp/perf.new text data bss dec hex filename 1275422 97416 1392416 2765254 2a31c6 /tmp/perf.new Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf makefile: Allow strong and weak functions in LIB_OBJSIan Munsie2010-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | When we build perf we place all of the .o files from the library files (util, arch/x/util, etc) into libperf.a which is then linked into perf. The problem is that the linker will by default only consider .o files within the .a archive if they are necessary to satisfy an unresolved symbol. As weak functions are not unresolved, it will not consider a .o file from the archive containing the strong versions of weak functions unless it requires it for another reason. This patch adds the --whole-archive flags to the linker when passing in the libperf.a file to ensure that it will consider every .o file in the archive, not just what it believes that it needs. The end result is that weak functions can now be overridden by strong variants of them in the libperf.a file. Cc: "tom.leiming" <tom.leiming@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1290991642-sup-5890@au1.ibm.com> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/rename' into perf/coreIngo Molnar2010-12-01
|\ | | | | | | | | | | | | | | | | Merge reason: This is an older commit under testing that was not pushed yet - merge it. Also fix up the merge in command-list.txt. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Tom Zanussi <tzanussi@gmail.com>
| * perf: Rename 'perf trace' to 'perf script'Ingo Molnar2010-11-16
| | | | | | | | | | | | | | | | Free the perf trace name space and rename the trace to 'script' which is a better match for the scripting engine. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | perf bench: Add feature that measures the performance of the ↵Hitoshi Mitake2010-11-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/x86/lib/memcpy_64.S memcpy routines via 'perf bench mem' This patch ports arch/x86/lib/memcpy_64.S to perf bench mem memcpy for benchmarking memcpy() in userland with tricky and dirty way. util/include/asm/cpufeature.h, util/include/asm/dwarf2.h, and util/include/linux/linkage.h are mostly dummy files with small wrappers, so that we are able to include memcpy_64.S unmodified. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: h.mitake@gmail.com Cc: Miao Xie <miaox@cn.fujitsu.com> Cc: Ma Ling <ling.ma@intel.com> Cc: Zhao Yakui <yakui.zhao@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andi Kleen <andi@firstfloor.org> LKML-Reference: <1290668693-27068-2-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf tools: Remove hardcoded include paths for elfutilsRobert Morell2010-11-19
|/ | | | | | | | | | | | | | | | | | | | | | | | | This change removes the use of hardcoded absolute "/usr/include/elfutils" paths from the perf build. The problem with hardcoded paths is that it prevents them from being overridden by $prefix or by -I in CFLAGS (e.g., for cross-compiling purposes). Instead, just include the "elfutils/" subdirectory as a relative path when files are needed from that directory. Tested by building perf: - Cross-compiled for ARM on x86_64 - Built natively on x86_64 - Built on x86_64 with /usr/include/elfutils moved to another location and manually included in CFLAGS Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1289945793-31441-1-git-send-email-rmorell@nvidia.com> Signed-off-by: Robert Morell <rmorell@nvidia.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/urgent' into perf/coreIngo Molnar2010-10-05
|\ | | | | | | | | | | | | | | | | Conflicts: tools/perf/util/ui/browsers/hists.c Merge reason: fix the conflict and merge in changes for dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Fix build breakageKusanagi Kouichi2010-10-04
| | | | | | | | | | | | | | | | | | | | | | | | The patch ecafda6 introduced a problem where all object files would be always rebuilt, fix it by using: http://www.gnu.org/software/make/manual/html_node/Prerequisite-Types.html Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Bernd Petrovitsch <bernd@sysprog.at> Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Fix linking errors with --as-needed flagTom Zanussi2010-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | External shared libraries should never be appended to the LDFLAGS as this messes the linking order. As EXTLIBS collects those libraries, it seems that perl and python libraries should also be appended to EXTLIBS. Also fix the broken linking order. This is a refresh of a patch by Ozan Çağlayan and improved by both Tom Zanussi and Kirill A. Shutemov. Cc: Ozan Çağlayan <ozan@pardus.org.tr> Tested-by: Kirill A. Shutemov <kirill@shutemov.name> Tested-by: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <1282627430.28324.8.camel@tropicana> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'linus' into perf/coreIngo Molnar2010-08-25
|\| | | | | | | | | | | Merge reason: pick up perf fixes Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Fix build error on read only source.Kusanagi Kouichi2010-08-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Parts of the build process were generating files outside the specified O= directory, causing the build to fail on systems where the sources are in a read only file system. Fix it by using $(OUTPUT) on these locations. Also check that $(OUTPUT) actually exists, just like the top level kernel Makefile does. Otherwise the failure message emitted is completely misleading. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20100817140841.0859362C03A@msa106.auone-net.jp> Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: add test for strlcpy()Kirill A. Shutemov2010-08-21
|/ | | | | | | | | | | | | | Some Linux distributions like ALT Linux provides patched glibc with contains strlcpy(). It's confilcts with strlcpy() from perf. Let's add check for strlcpy(). Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <1282351101-8879-1-git-send-email-kirill@shutemov.name> Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix build on POSIX shellsBernd Petrovitsch2010-08-17
| | | | | | | | | | | | | | POSIX sh does not specify the brace expansion, so fix it by replacing the global $(shell ...) lines quite at the top creating the output directories with real rules. Cc: Ingo Molnar <mingo@elte.hu> Cc: Kusanagi Kouichi <slash@ac.auone-net.jp> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1282046280.5822.4.camel@thorin> Signed-off-by: Bernd Petrovitsch <bernd@sysprog.at> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Complete the breakdown of util/newt.cArnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Move hists browser to util/ui/browsers/Arnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Move map browser to util/ui/browsers/Arnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Move annotate browser to util/ui/browsers/Arnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Move ui_progress routines to separate file in util/ui/Arnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Move ui_helpline routines to separate file in util/ui/Arnaldo Carvalho de Melo2010-08-10
| | | | | LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf ui: Start breaking down newt.c into multiple filesArnaldo Carvalho de Melo2010-08-06
| | | | | | | | | | | | | As new TUI features get added the newt.c file is growing a lot and its name is growing misleading as an effort is being made to reduce the coupling with libnewt. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix fallback to cplus_demangle() when bfd_demangle() is not ↵Conny Seidel2010-07-02
| | | | | | | | | | | | | | | | | | available make version 3.80 doesn't support "else ifdef" on the same line, also it doesn't support unindented nested constructs. Build fails with: Makefile:608: Extraneous text after `else' directive Makefile:611: *** only one `else' per conditional. Stop. This patch fixes the build for make 3.80. Cc: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <1277990366-1462-1-git-send-email-conny.seidel@amd.com> Signed-off-by: Conny Seidel <conny.seidel@.amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf scripts perl: Makefile fixTom Zanussi2010-06-18
| | | | | | | | | | | | Fix a typo introduced by recent Makefile changes, in f9af3a4. Without it, Perl scripting support won't get compiled in. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <1276836006.7762.15.camel@tropicana> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Reorganize the Makefile feature testsArnaldo Carvalho de Melo2010-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Moving the tests to a separate file, feature-tests.mak and using a try-cc function similar to the try-run in Kbuild. This also makes the output more quiet as we can stop using the INTERMEDIATE target to remove the .perf.dev.null file needed for some gcc versions where /dev/null can't be used as the output file name. As the tests get shorter by uninlining the source code used to test for features, we can more properly use identation. The feature tests itself can be made more clear and reused, like when trying to see what is needed to have bfd_demangle. We also get a bit closer to reusing scripts/Kbuild.include, reducing the distance from the kernel build system. Tests performed: [root@emilia perf]# make -j9 O=/tmp/perf PERF_VERSION = 0.0.2.PERF GEN /tmp/perf/common-cmds.h * new build flags or prefix GEN perf-archive CC /tmp/perf/builtin-annotate.o CC /tmp/perf/bench/sched-messaging.o CC /tmp/perf/builtin-diff.o <SNIP> CC /tmp/perf/scripts/python/Perf-Trace-Util/Context.o CC /tmp/perf/perf.o CC /tmp/perf/builtin-help.o AR /tmp/perf/libperf.a LINK /tmp/perf/perf [root@emilia perf]# If we uninstall, for instance newt-devel we get: [root@emilia perf]# rpm -e newt-devel [root@emilia perf]# make -j9 O=/tmp/perf Makefile:564: newt not found, disables TUI support. Please install newt-devel or libnewt-dev * new build flags or prefix GEN perf-archive CC /tmp/perf/perf.o CC /tmp/perf/builtin-annotate.o <SNIP> AR /tmp/perf/libperf.a LINK /tmp/perf/perf [root@emilia perf]# And then binutils-devel: [root@emilia perf]# make -j9 O=/tmp/perf Makefile:564: newt not found, disables TUI support. Please install newt-devel or libnewt-dev Makefile:632: No bfd.h/libbfd found, install binutils-dev[el]/zlib-static to gain symbol demangling * new build flags or prefix GEN perf-archive CC /tmp/perf/perf.o <SNIP> AR /tmp/perf/libperf.a LINK /tmp/perf/perf [root@emilia perf]# And then strictly required devel packages: [root@emilia perf]# rpm -e elfutils-libelf-devel elfutils-devel [root@emilia perf]# make -j9 O=/tmp/perf Makefile:509: No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev Makefile:542: *** No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel. Stop. [root@emilia perf]# After installing everything back on: [root@emilia perf]# yum install elfutils-devel binutils-devel newt-devel <SNIP> Installed: binutils-devel.x86_64 0:2.20.51.0.2-5.11.el6 elfutils-devel.x86_64 0:0.147-1.el6 elfutils-libelf-devel.x86_64 0:0.147-1.el6 newt-devel.x86_64 0:0.52.11-1.el6 Complete! [root@emilia perf]# make -j9 PERF_VERSION = 0.0.2.PERF GEN common-cmds.h * new build flags or prefix GEN perf-archive CC builtin-annotate.o <SNIP> AR libperf.a LINK perf [root@emilia perf]# make -j9 [root@emilia perf]# Thanks to Sam for pointing me to try-run. Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Michal Marek <mmarek@suse.cz> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Add mode to build without newt supportArnaldo Carvalho de Melo2010-05-17
| | | | | | | | | | make NO_NEWT=1 Will avoid building the newt (tui) support. Suggested-by: Ingo Molnar <mingo@elte.hu> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tui: Add explicit -lslang optionArnaldo Carvalho de Melo2010-05-17
| | | | | | | | | At least on rawhide using -lnewt is not enough if we use SLang routines directly, so add an explicit -lslang since we use SLang routines. Reported-by: Ingo Molnar <mingo@elte.hu> Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf newt: Make <- zoom out filtersArnaldo Carvalho de Melo2010-05-14
| | | | | | | | | | | | | | | | | | | | After we use the filters to zoom into DSOs or threads, we can use <- (left arrow) to zoom out from the last filter applied. It is still possible to zoom out of order by using the popup menu. With this we now have the zoom out operation on the browsing fast path, by allowing fast navigation using just the four arrors and the enter key to expand collapse callchains. Suggested-by: Ingo Molnar <mingo@elte.hu> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf report: Librarize the annotation code and use it in the newt browserArnaldo Carvalho de Melo2010-05-11
| | | | | | | | | | | | | | | | | | | | | | | | Now we don't anymore use popen to run 'perf annotate' for the selected symbol, instead we collect per address samplings when processing samples in 'perf report' if we're using the newt browser, then we use this data directly to do annotation. Done this way we can actually traverse the objdump_line objects directly, matching the addresses to the collected samples and colouring them appropriately using lower level slang routines. The new ui_browser class will be reused for the main, callchain aware, histogram browser, when it will be made generic and don't assume that the objects are always instances of the objdump_line class maintained using list_heads. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: allow forcing use of cplus_demangleKyle McMartin2010-05-11
| | | | | | | | | | | | | | For Fedora, I want to force perf to link against libiberty.a for cplus_demangle, rather than libbfd.a for bfd_demangle due to licensing insanity on binutils. (libiberty is LGPL2, libbfd is GPL3.) If we just rely on autodetection, we'll end up with libbfd linked against us, since they're both in binutils-static in the buildroot. Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20100510204335.GA7565@bombadil.infradead.org> Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf probe: Check older elfutils and set NO_DWARFMasami Hiramatsu2010-05-11
| | | | | | | | | | | | | Check whether elfutils is older than 0.138 (from which version checking routine has been introduced). And if so, set NO_DWARF because it is hard to check the API dependency without version checking. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Reported-by: Robert Richter <robert.richter@amd.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20100511045953.9913.19485.stgit@localhost6.localdomain6> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf: add perf-inject builtinTom Zanussi2010-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, perf 'live mode' writes build-ids at the end of the session, which isn't actually useful for processing live mode events. What would be better would be to have the build-ids sent before any of the samples that reference them, which can be done by processing the event stream and retrieving the build-ids on the first hit. Doing that in perf-record itself, however, is off-limits. This patch introduces perf-inject, which does the same job while leaving perf-record untouched. Normal mode perf still records the build-ids at the end of the session as it should, but for live mode, perf-inject can be injected in between the record and report steps e.g.: perf record -o - ./hackbench 10 | perf inject -v -b | perf report -v -i - perf-inject reads a perf-record event stream and repipes it to stdout. At any point the processing code can inject other events into the event stream - in this case build-ids (-b option) are read and injected as needed into the event stream. Build-ids are just the first user of perf-inject - potentially anything that needs userspace processing to augment the trace stream with additional information could make use of this facility. Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frédéric Weisbecker <fweisbec@gmail.com> LKML-Reference: <1272696080-16435-3-git-send-email-tzanussi@gmail.com> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Don't use code surrounded by __KERNEL__Arnaldo Carvalho de Melo2010-05-02
| | | | | | | | | | | | | | We need to refactor code to be explicitely shared by the kernel and at least the tools/ userspace programs, so, till we do that, copy the bare minimum bitmap/bitops code needed by tools/perf. Reported-by: "H. Peter Anvin" <hpa@zytor.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Initial regression testing commandArnaldo Carvalho de Melo2010-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First an example with the first internal test: [acme@doppio linux-2.6-tip]$ perf test 1: vmlinux symtab matches kallsyms: Ok So it run just one test, that is "vmlinux symtab matches kallsyms", and it was successful. If we run it in verbose mode, we'll see details about errors and extra warnings for non-fatal problems: [acme@doppio linux-2.6-tip]$ perf test -v 1: vmlinux symtab matches kallsyms: --- start --- Looking at the vmlinux_path (5 entries long) No build_id in vmlinux, ignoring it No build_id in /boot/vmlinux, ignoring it No build_id in /boot/vmlinux-2.6.34-rc4-tip+, ignoring it Using /lib/modules/2.6.34-rc4-tip+/build/vmlinux for symbols Maps only in vmlinux: ffffffff81cb81b1-ffffffff81e1149b 0 [kernel].init.text ffffffff81e1149c-ffffffff9fffffff 0 [kernel].exit.text ffffffffff600000-ffffffffff6000ff 0 [kernel].vsyscall_0 ffffffffff600100-ffffffffff6003ff 0 [kernel].vsyscall_fn ffffffffff600400-ffffffffff6007ff 0 [kernel].vsyscall_1 ffffffffff600800-ffffffffffffffff 0 [kernel].vsyscall_2 Maps in vmlinux with a different name in kallsyms: ffffffffff600000-ffffffffff6000ff 0 [kernel].vsyscall_0 in kallsyms as [kernel].0 ffffffffff600100-ffffffffff6003ff 0 [kernel].vsyscall_fn in kallsyms as: *ffffffffff600100-ffffffffff60012f 0 [kernel].2 ffffffffff600400-ffffffffff6007ff 0 [kernel].vsyscall_1 in kallsyms as [kernel].6 ffffffffff600800-ffffffffffffffff 0 [kernel].vsyscall_2 in kallsyms as [kernel].8 Maps only in kallsyms: ffffffffff600130-ffffffffff6003ff 0 [kernel].4 ---- end ---- vmlinux symtab matches kallsyms: Ok [acme@doppio linux-2.6-tip]$ In the above case we only know the name of the non contiguous kernel ranges in the address space when reading the symbol information from the ELF symtab in vmlinux. The /proc/kallsyms file lack this, we only notice they are separate because there are modules after the kernel and after that more kernel functions, so we need to have a module rbtree backed by the module .ko path to get symtabs in the vmlinux case. The tool uses it to match by address to emit appropriate warning, but don't considers this fatal. The .init.text and .exit.text ines, of course, aren't in kallsyms, so I left these cases just as extra info in verbose mode. The end of the sections also aren't in kallsyms, so we the symbols layer does another pass and sets the end addresses as the next map start minus one, which sometimes pads, causing harmless mismatches. But at least the symbols match, tested it by copying /proc/kallsyms to /tmp/kallsyms and doing changes to see if they were detected. This first test also should serve as a first stab at documenting the symbol library by providing a self contained example that exercises it together with comments about what is being done. More tests to check if actions done on a monitored app, like doing mmaps, etc, makes the kernel generate the expected events should be added next. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Create $(OUTPUT)arch/$(ARCH)/util/ directoryArnaldo Carvalho de Melo2010-04-27
| | | | | | | | | | | | | | | | So that "make -C tools/perf O=/tmp/some/path" works again. Problem introduced in: cd932c5 "perf: Move arch specific code into separate arch director" Cc: Ian Munsie <imunsie@au.ibm.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix libdw-dev package name in error messageStefan Hajnoczi2010-04-26
| | | | | | | | | | | | | | | | | The headers required for DWARF support are provided by the libdw-dev package in Debian-based distros. This patch corrects the elfutils-dev package name to libdw-dev in the Makefile error message when libdw.h is not found. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <1272292023-9869-1-git-send-email-stefanha@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf: Move arch specific code into separate arch directoryIan Munsie2010-04-21
| | | | | | | | | | | | | The perf userspace tool included some architecture specific code to map registers from the DWARF register number into the names used by the regs and stack access API. This moves the architecture specific code out into a separate arch/x86 directory along with the infrastructure required to use it. Signed-off-by: Ian Munsie <imunsie@au.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* perf: 'perf kvm' tool for monitoring guest performance from hostZhang, Yanmin2010-04-19
| | | | | | | Here is the patch of userspace perf tool. Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* perf tools: Fix perl support installation when O= is usedArnaldo Carvalho de Melo2010-04-09
| | | | | | | | | | | We need to create the $O/scripts/perl/Perf-Trace-Util/ directory too. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/urgent' into perf/coreIngo Molnar2010-04-03
|\ | | | | | | | | | | | | | | | | Conflicts: tools/perf/Makefile Merge reason: resolve the conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf, probe-finder: Build fix on DebianBorislav Petkov2010-04-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Building chokes with: In file included from /usr/include/gelf.h:53, from /usr/include/elfutils/libdw.h:53, from util/probe-finder.h:61, from util/probe-finder.c:39: /usr/include/libelf.h:98: error: expected specifier-qualifier-list before 'off64_t' [...] Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <20100329164755.GA16034@aftab> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf tools: Move the prototypes in util/string.h to util.hArnaldo Carvalho de Melo2010-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | So that we avoid conflict with libc's string.h header. Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Suggested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Allow specifying O= to build files in a separate directoryArnaldo Carvalho de Melo2010-04-02
| | | | | | | | | | | | | | | | | | | | | | | | Avoiding polluting the source tree with build files. Reported-by: Steven Rostedt <rostedt@goodmis.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Use -o $(BITBUCKET) in one more caseArnaldo Carvalho de Melo2010-04-02
| | | | | | | | | | | | | | | | | | | | | | As described in 1703f2c some gcc versions has issues using /dev/null, so use the mechanism used elsewhere. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf probe: Add NO_DWARF make optionMasami Hiramatsu2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | Add NO_DWARF make option for testing build without libdw. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1269274229-20442-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf probe: Cleanup debuginfo related codeMasami Hiramatsu2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup debuginfo related code to eliminate fragile code which pointed by Ingo (Thanks!). 1) Invert logic of NO_DWARF_SUPPORT to DWARF_SUPPORT. 2) For removing assymetric/local variable ifdefs, introduce more helper functions. 3) Change options order to reduce the number of ifdefs. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1269274229-20442-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf report: Implement initial UI using newtArnaldo Carvalho de Melo2010-03-12
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newt has widespread availability and provides a rather simple API as can be seen by the size of this patch. The work needed to support it will benefit other frontends too. In this initial patch it just checks if the output is a tty, if not it falls back to the previous behaviour, also if newt-devel/libnewt-dev is not installed the previous behaviour is maintaned. Pressing enter on a symbol will annotate it, ESC in the annotation window will return to the report symbol list. More work will be done to remove the special casing in color_fprintf, stop using fmemopen/FILE in the printing of hist_entries, etc. Also the annotation doesn't need to be done via spawning "perf annotate" and then browsing its output, we can do better by calling directly the builtin-annotate.c functions, that would then be moved to tools/perf/util/annotate.c and shared with perf top, etc But lets go by baby steps, this patch already improves perf usability by allowing to quickly do annotations on symbols from the report screen and provides a first experimentation with libnewt/TUI integration of tools. Tested on RHEL5 and Fedora12 X86_64 and on Debian PARISC64 to browse a perf.data file collected on a Fedora12 x86_64 box. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1268349164-5822-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf: Make the install relative to DESTDIR if specifiedJohn Kacur2010-03-11
| | | | | | | | | | | | | | | | | | | | | | | Without this change, the install path is relative to prefix/DESTDIR where prefix is automatically set to $HOME. This can produce unexpected results. For example: make -C tools/perf DESTDIR=/home/jkacur/tmp install-man creates the directory: /home/jkacur/home/jkacur/tmp/share/... instead of the expected: /home/jkacur/tmp/share/... Signed-off-by: John Kacur <jkacur@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Kyle McMartin <kyle@redhat.com> Cc: <stable@kernel.org> LKML-Reference: <1268312220-12880-1-git-send-email-jkacur@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf tools: Fix sparse CPU numbering related bugsPaul Mackerras2010-03-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At present, the perf subcommands that do system-wide monitoring (perf stat, perf record and perf top) don't work properly unless the online cpus are numbered 0, 1, ..., N-1. These tools ask for the number of online cpus with sysconf(_SC_NPROCESSORS_ONLN) and then try to create events for cpus 0, 1, ..., N-1. This creates problems for systems where the online cpus are numbered sparsely. For example, a POWER6 system in single-threaded mode (i.e. only running 1 hardware thread per core) will have only even-numbered cpus online. This fixes the problem by reading the /sys/devices/system/cpu/online file to find out which cpus are online. The code that does that is in tools/perf/util/cpumap.[ch], and consists of a read_cpu_map() function that sets up a cpumap[] array and returns the number of online cpus. If /sys/devices/system/cpu/online can't be read or can't be parsed successfully, it falls back to using sysconf to ask how many cpus are online and sets up an identity map in cpumap[]. The perf record, perf stat and perf top code then calls read_cpu_map() in the system-wide monitoring case (instead of sysconf) and uses cpumap[] to get the cpu numbers to pass to perf_event_open. Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> LKML-Reference: <20100310093609.GA3959@brick.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf probe: Use elfutils-libdw for analyzing debuginfoMasami Hiramatsu2010-02-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newer gcc introduces newer & richer debuginfo, and only libdw in elfutils project can support it. So perf probe moves onto elfutils-libdw from libdwarf. Changes in v3: - Cast Dwarf_Addr/Dwarf_Word to uintmax_t for printf-formats. - Recover a sign-prefix which was removed in v2 by mistake. Changes in v2: - Fix a type-casting bug in Makefile. - Cast Dwarf_Addr/Dwarf_Word to unsigned long long for printf-formats. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> LKML-Reference: <20100225133542.6725.34724.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf/scripts: Add syscall tracing scriptsTom Zanussi2010-02-24
| | | | | | | | | | | | | | | | | | Adds a set of scripts that aggregate system call totals and system call errors. Most are Python scripts that also test basic functionality of the new Python engine, but there's also one Perl script added for comparison and for reference in some new Documentation contained in a later patch. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-8-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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