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2011-05-09perf symbols: allow forcing use of cplus_demangleKyle McMartin
commit d11c7addfe0fa501cb54c824c0fac3481d527433 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Check if /dev/null can be used as the -o gcc argumentArnaldo Carvalho de Melo
commit 1703f2c321a8a531c393e137a82602e16c6061cb upstream. At least on Debian PARISC64, using: acme@parisc:~/git/linux-2.6-tip$ gcc -v Using built-in specs. Target: hppa-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.3.4-6' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --disable-libssp --enable-checking=release --build=hppa-linux-gnu --host=hppa-linux-gnu --target=hppa-linux-gnu Thread model: posix gcc version 4.3.4 (Debian 4.3.4-6) there are issues about using 'gcc -o /dev/null': /usr/bin/ld: final link failed: File truncated collect2: ld returned 1 exit status So we test that and use /dev/null in environments where it works, while using an .INTERMEDIATE file on those where it can't be used, so that the .perf.dev.null file can be used instead and then deleted when make exits. Researched-with: Kyle McMartin <kyle@mcmartin.ca> Researched-with: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@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: <1263293910-8484-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Move QUIET_STDERR def to before first useArnaldo Carvalho de Melo
commit 830395188fae5f4028fa3c38ab1b031aae18a64c upstream. QUIET_STDERR is used when detecting if -fstack-protector-all can be used. Noticed while building the perf tools on a Debian PARISC64 machine. Signed-off-by: Arnaldo Carvalho de Melo <acme@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: <1263293910-8484-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf: Use default compiler mode by defaultMichael S. Tsirkin
commit 81516c5fc83a13a1d12f466aa7e14f5fd62a63ce upstream. gcc with no flags typically is a sane default for systems to use, and looking at the running kernel is probably broken for cross-builds anyway, so let's not do this. Add EXTRA_CFLAGS so that users can override default gcc mode if they want to. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arjan van de Ven <arjan@infradead.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091122121335.GA24254@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Suggest static libraries as wellMichael S. Tsirkin
commit b197c7ef7169bd5f11fb9d803b322d0daef7e256 upstream. On error, suggest installing static libraries along with shared libraries. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091122131311.GA24318@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Add V=2 option to help debug config issuesMichael S. Tsirkin
commit 7baed9af4bf0d7850045e36d19a43a2c76872b62 upstream. Make standard error show up on console when V=2 is set. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091122112726.GC13644@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Support static buildMichael S. Tsirkin
commit 751386507701010831d72c522171753d2cd903d2 upstream. This makes it possible to build perf statically, by performing: make LDFLAGS=-static Since static libraries are only searched in the order they are specified, move library list from LDFLAGS to EXTLIBS, so that they are put at the end of linker command line. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091029152002.GA5406@redhat.com> [ v2: resolved conflicts ] Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Test -fstack-protector-all compiler option for inclusion in CFLAGSMichael Cree
commit 5d7bdab75cd56d2bdc0986ae5546be3b09fea70a upstream. Some architectures (e.g. Alpha) do not support the -fstack-protector-all compiler option and the use of the option with -Werror causes the compiler to abort and the build fails. Test that the compiler supports -fstack-protector-all before inclusion in CFLAGS. Signed-off-by: Michael Cree <mcree@orcon.net.nz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20091111074302.GA3728@omega> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Add 'make DEBUG=1' to remove the -O6 cflagSteven Rostedt
commit 60d526f7fa6246b8e32d5b45610d625a5608d988 upstream. When using gdb to debug perf, it is practically impossible to use when perf is compiled with -O6. For developers, this patch adds the DEBUG feature to the make command line so that a developer can easily remove the optimization flag. LKML-Reference: <1255590330.8392.446.camel@twins> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091020232033.984323261@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09perf tools: Display better error messages on missing packagesRandy Dunlap
commit 1abc7f5500fff8422f34826a006648d8741d83d3 upstream. Check for libelf headers and glibc headers separately so that the error message correctly identifies which package installation is missing/needed. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: paulus@samba.org Cc: a.p.zijlstra@chello.nl Cc: efault@gmx.de Cc: fweisbec@gmail.com Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <4ADBCCE8.3060300@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> [bwh: Backport to 2.6.32] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-09-20perf: Initialize callchains roots's childen hitsFrederic Weisbecker
commit 5225c45899e872383ca39f5533d28ec63c54b39e upstream. Each histogram entry has a callchain root that stores the callchain samples. However we forgot to initialize the tracking of children hits of these roots, which then got random values on their creation. The root children hits is multiplied by the minimum percentage of hits provided by the user, and the result becomes the minimum hits expected from children branches. If the random value due to the uninitialization is big enough, then this minimum number of hits can be huge and eventually filter every children branches. The end result was invisible callchains. All we need to fix this is to initialize the children hits of the root. Reported-by: Christoph Hellwig <hch@infradead.org> 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: Paul Mackerras <paulus@samba.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-02perf: Resurrect flat callchainsFrederic Weisbecker
commit 97aa1052739c6a06cb6b0467dbf410613d20bc97 upstream. Initialize the callchain radix tree root correctly. When we walk through the parents, we must stop after the root, but since it wasn't well initialized, its parent pointer was random. Also the number of hits was random because uninitialized, hence it was part of the callchain while the root doesn't contain anything. This fixes segfaults and percentages followed by empty callchains while running: perf report -g flat Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-04-01perf: Make the install relative to DESTDIR if specifiedJohn Kacur
commit 7ae5f21361fea11f58c398701da635f778635d13 upstream. 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> LKML-Reference: <1268312220-12880-1-git-send-email-jkacur@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-01-25perf timechart: Use tid not pid for COMM changeArjan van de Ven
commit 8f06d7e6e1bbfb32698d6d455583ab7460c090e2 upstream. A process that changes its comm field, does this on a per kernel task struct basis. The timechart tool used, incorrectly, the pid to track this, and should have used the tid instead... Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100116125319.34ac3edd@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-11-08perf tools: Fix permission checksPekka Enberg
The perf_event_open() system call returns EACCES if the user is not root which results in a very confusing error message: $ perf record -A -a -f Error: perfcounter syscall returned with -1 (Permission denied) Fatal: No CONFIG_PERF_EVENTS=y kernel support configured? It turns out that's because perf tools are checking only for EPERM. Fix that up to get a much better error message: $ perf record -A -a -f Fatal: Permission error - are you root? Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1257696066-4046-1-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-26perf tools: Remove -Wcast-alignPaul Mundt
The present use of -Wcast-align causes the build to blow up on SH due to generating a "cast increases required alignment of target type" error on each invocation of list_for_each_entry(). It seems that this was previously reported and killed off in the ia64 support patch, but nothing seems to have happened with that. Presumably the same problem still remains there, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org> LKML-Reference: <20091026054000.GA13517@linux-sh.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-25perf tools: Fix compatibility with libelf 0.8 and autodetectMarti Raudsepp
The Makefile now automatically defines LIBELF_NO_MMAP when libelf 0.8.x is detected. libelf 0.8 is still maintained and some distributions such as Arch Linux use it instead of elfutils. Signed-off-by: Marti Raudsepp <marti@juffo.org> Cc: Lucas De Marchi <lucas.de.marchi@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <1256400636.3007.16.camel@newn> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-20perf timechart: Improve the visual appearance of scheduler delaysArjan van de Ven
[from KS feedback] Currently, scheduler delays are shown in a mostly transparent, light yellow color. This color is rather hard to see on several screens, especially projectors. This patch changes the color of the scheduler delays to be a much more "hard" yellow that survived the kernel summit projector. Reported-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091020064731.20ae126a@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-20perf timechart: Fix the wakeup-arrows that point to non-visible processesArjan van de Ven
The timechart wakeup arrows currently show no process information when the waker/wakee are processes that are not actually chosen to be shown on the timechart. This patch fixes this oversight, by looking through all processes (after giving preference to visible processes) as well as falling back to just showing the PID if no name for the process can be resolved. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091020064649.0e4959b2@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-19perf top: Fix --delay_secs 0 division by zeroTim Blechmann
Add delay_secs sanity check to handle_keypress, this fixes a division by zero crash. Signed-off-by: Tim Blechmann <tim@klingt.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4AD9EBFD.106@klingt.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-16perf tools: Bump version to 0.0.2Ingo Molnar
We released the first version of perf with 0.0.1 in v2.6.31, time to double our version number to 0.0.2 ;-) Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-12perf tools: Remove static debugfs path from parse-eventsAshwin Chaugule
Timechart doesn't work if debugfs is not in /sys/kernel/debug/. Fixed by using global debugfs_path which is filled in by perf. Signed-off-by: Ashwin Chaugule <ashwinc@quicinc.com> Cc: "Arjan van de Ven" <arjan@linux.intel.com> LKML-Reference: <a751bdc6978478de6d10440e587a2cc7.squirrel@www.codeaurora.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-12perf tools: Fix the NO_64BIT build on pure 64-bit systemsIngo Molnar
Randy Dunlap reported that 'make NO_64BIT=1' fails to build a pure 32-b it binary on 64-bit/64-bit x86 systems. The reason is that we dont pass in the -m32 and GCC defaults to -m64. So pass it in - and also extend the warning message about libelf dependencies - glibc-dev[el] is needed as well beyond the libelf library. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: Message-Id: <20091005131729.78444bfb.randy.dunlap@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-12perf tools: Fix const char type propagationRandy Dunlap
The following perf build warnings/errors in function argument types: builtin-sched.c:1894: warning: passing argument 1 of 'sort_dimension__add' discards qualifiers from pointer target type util/trace-event-parse.c:685: warning: passing argument 2 of 'read_expected' discards qualifiers from pointer target type util/trace-event-parse.c:741: warning: passing argument 4 of 'test_type_token' discards qualifiers from pointer target type util/trace-event-parse.c:706: warning: passing argument 2 of 'read_expected_item' discards qualifiers from pointer target type ... trigger because older GCC is not able to prove that sort_dimension__add() does not change the string. Some goes for test_type_token(). Fix this by improving type consistency. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20091005131729.78444bfb.randy.dunlap@oracle.com> [ Also remove ugly type cast now unnecessary. ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf_event: Provide vmalloc() based mmap() backingPeter Zijlstra
Some architectures such as Sparc, ARM and MIPS (basically everything with flush_dcache_page()) need to deal with dcache aliases by carefully placing pages in both kernel and user maps. These architectures typically have to use vmalloc_user() for this. However, on other architectures, vmalloc() is not needed and has the downsides of being more restricted and slower than regular allocations. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: David Miller <davem@davemloft.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1254830228.21044.272.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf tools: elf_sym__is_function() should accept "zero" sized functionsArnaldo Carvalho de Melo
Asm routines that end up having size equal to zero are not really zero sized, and as now we do kernel_maps__fixup_sym_end, at least for kernel routines this gets fixed. A similar fixup needs to be done for the userspace bits as well, but as this fixup started only because in /proc/kallsyms we don't have the end address nor the function size, it appeared here first. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <1254796503-27203-1-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf trace: Update eval_flag() flags array to match interrupt.hTom Zanussi
Add missing BLOCK_IOPOLL_SOFTIRQ entry. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: lizf@cn.fujitsu.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1254808849-7829-3-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-06perf trace: Remove unused code in builtin-trace.cTom Zanussi
And some minor whitespace cleanup. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: lizf@cn.fujitsu.com Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1254808849-7829-2-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-04perf: Propagate term signal to childChris Wilson
If we launch the child on behalf of the user, ensure that it dies along with ourselves when we are interrupted. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> LKML-Reference: <1254616502-4728-1-git-send-email-chris@chris-wilson.co.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01perf tools: Run generate-cmdlist.sh properlyMulyadi Santosa
Right now generate-cmdlist.sh is not executable, so we should call it as an argument ".". This fixes cases where due to different umask defaults the generate-cmdlist.sh script is not executable in a kernel tree checkout. Signed-off-by: Mulyadi Santosa <mulyadi.santosa@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <f284c33d0909251201w422e9687x8cd3a784e85adf7d@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01perf timechart: Add a power-only modeArjan van de Ven
For doing work on the Linux power management components, I need to make long (30+ seconds) traces. Currently, this then results in a HUGE svg file, with mostly process data that isn't interesting. This patch adds a --power-only mode to perf timechart that only outputs the CPU power section of the SVG; this significantly reduces the size of the SVG file, making even 30+ second traces viewable with inkscape. As a minor tweak for the same effect, the minimum text size is decreased; current inkscape cannot zoom in deep enough to show text this small, but it reduces inkscape compute time. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: peterz@infradead.org LKML-Reference: <20090924154013.0675ab71@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-30perf top: Add poll_idle to the skip listArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <20090925220239.GA5488@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-24perf tools: Dont use openat()Eric Dumazet
openat() is still a young glibc facility, better to not use it in a non performance critical program (perf list) Many machines have older glibc (RHEL 4 Update 5 -> glibc-2.3.4-2.36 on my dev machine for example). Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ulrich Drepper <drepper@redhat.com> LKML-Reference: <4ABB767D.6080004@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-24perf tools: Fix buffer allocationEric Dumazet
"perf top" cores dump on my dev machine, if run from a directory where vmlinux is present: *** glibc detected *** malloc(): memory corruption: 0x085670d0 *** Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: <stable@kernel.org> LKML-Reference: <4ABB6EB7.7000002@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-24perf tools: .gitignore += perf*.htmlKirill Smelkov
I've tried building the docs in tools/perf/Documentation/ , and after that `git status` showed dozen of untracked htmls. Let's ignore them. Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru> LKML-Reference: <1253790022-10300-1-git-send-email-kirr@mns.spb.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-24perf tools: Handle relative paths while loading module symbolsMike Galbraith
Inform util/module.c::mod_dso__load_module_paths() that relative paths do exist in some modules.dep, and make it fail noisily should it encounter a path that it doesn't understand, or a module it cannot open. Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: rostedt@goodmis.org Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <1253779628.10513.8.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-23perf tools: Fix module symbol loading bugMike Galbraith
Avi Kivity reported 'perf annotate' failures with modules, the requested function was not annotated. If there are no modules currently loaded, or the last module scanned is not loaded, dso__load_modules() steps on the value from dso__load_vmlinux(), so we happily load the kallsyms symbols on top of what we've already loaded. Fix that such that the total count of symbols loaded is returned. Should module symbol load fail after parsing of vmlinux, is's a hard failure, so do not silently fall-back to kallsyms. Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: rostedt@goodmis.org Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <1253697658.11461.36.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-22perf stat: Fix zero total printoutsIngo Molnar
Before: 0 sched:sched_switch # nan M/sec After: 0 sched:sched_switch # 0.000 M/sec Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21perf: Do the big rename: Performance Counters -> Performance EventsIngo Molnar
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: Stephane Eranian <eranian@google.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20perf util: SVG performance improvementsArjan van de Ven
Tweak the output SVG to increase performance in SVG viewers by limiting the different types of font sizes and by smarter transformations on the text. At least with Inkscape this gives a notable performance improvement during zoom and scrolling. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181438.3a49cb93@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20perf util: Make the timechart SVG width dynamicArjan van de Ven
This patch adds a command line option for timechart that allows the user to specify the width of the SVG file. This patch also makes sure that each second of recording has at least 200 units (pixels at 96 DPI) of width. This impacts recordings longer than 5 seconds; recordings shorter than 5 second will scale up to have a width of 1000 units for the whole recording (as before). Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181416.69570c5d@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20perf timechart: Show the duration of scheduler delays in the SVGArjan van de Ven
Given that scheduler latencies are the hot thing nowadays, show the duration of said latencies in the SVG in text form. In addition, if the latency is more than 10 msec, pick a brighter yellow color as a way to point these long delays out. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181353.796f4509@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20perf timechart: Show the name of the waker/wakee in timechartArjan van de Ven
Timechart currently shows thin green lines for sending or receiving wakeups. This patch also prints (in a very small font) the name of the process that is being woken/wakes up this process. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090920181328.68baa978@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf utils: Use a define for the maximum length of a trace eventArjan van de Ven
As per Ingo's review: use a #define rather than an open coded constant for the maximum length of a trace event for storing in the perf.data file. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133630.10533d3e@infradead.org> [ add a few comments to nearby functions ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf: Add timechart help text and add timechart to "perf help"Arjan van de Ven
As suggested by Ingo, add a timechart man page help text, as well as add it to the "perf help" overview. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133604.3767fa35@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf utils: Be consistent about minimum text size in the svghelperArjan van de Ven
Be more consistent in the svghelper about the minimum text size by having a global #define for this. There needs to be a minimum text size in order to keep the size of the SVG file within the reach of what current SVG viewers can cope with. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> Cc: Arjan van de Ven <arjan@infradead.org> LKML-Reference: <20090919133507.7374ef8b@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf timechart: Add "perf timechart record"Arjan van de Ven
Add a command line option to record a trace, similar to "perf sched record". Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: fweisbec@gmail.com Cc: peterz@infradead.org Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090919133442.0dc2c7f5@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf: Add the timechart toolArjan van de Ven
timechart is a tool to visualize what is going on in the system. The user makes a trace of what is going on with > perf record --timechart /usr/bin/some_command and then can turn the output of this into an svg file > perf timechart which then can be viewed with any SVG view; inkscape works well enough for me. The idea behind timechart is to create a "infinitely zoomable" picture; something that has high level information on a 1:1 zoom level, but which exposes more details every time you zoom into a specific area. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130713.6a77bbc0@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf: Add a SVG helper library fileArjan van de Ven
The timechart tool writes out SVG format output; this patch adds a set of helper functions to abstract dealing with SVG from the core timechart code. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130613.677f0516@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19perf: Add a sample_event type to the event_unionArjan van de Ven
Add a sample_event type to the event_union so that raw samples can be processed easily. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130511.411434b5@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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