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2009-08-12perf tools: Fix fallback to cplus_demangle() when bfd_demangle() is not ↵Arnaldo Carvalho de Melo
available In old binutils we can't access bfd_demangle(), use cplus_demangle() just like oprofile. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Luis Claudio R. Gonçalves <lclaudio@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frédéric Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090811192211.GG18061@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-08-09perf report: Add debug help for the finding of symbol bugs - show the symtab ↵Arnaldo Carvalho de Melo
origin (DSO, build-id, kernel, etc) Used with perf report --verbose: [acme@doppio linux-2.6-tip]$ perf report -v | head -16 5.17% firefox /usr/lib64/xulrunner-1.9.1/libxul.so 0x00000000005d8eee f [.] imgContainer::DrawFrameTo(gfxIImageFrame*, gfxIImageFrame*, nsRect&) 2.56% firefox /lib64/libpthread-2.10.1.so 0x0000000000008e02 d [.] __pthread_mutex_lock_internal 1.94% firefox /usr/lib64/xulrunner-1.9.1/libxul.so 0x0000000000d0af8f f [.] SearchTable 1.75% firefox [kernel] 0xffffffffff60013b k [.] vread_hpet 1.63% firefox /lib64/libpthread-2.10.1.so 0x000000000000a404 d [.] __pthread_mutex_unlock 1.47% firefox /usr/lib64/xulrunner-1.9.1/libmozjs.so 0x00000000000482ea f [.] js_Interpret 1.42% firefox /usr/lib64/xulrunner-1.9.1/libmozjs.so 0x000000000003eda3 f [.] JS_CallTracer 1.24% firefox [kernel] 0xffffffff8102ca4a k [k] read_hpet 1.16% firefox [kernel] 0xffffffff810f3dd4 k [k] fget_light 1.11% firefox /usr/lib64/xulrunner-1.9.1/libmozjs.so 0x00000000000567ff f [.] js_TraceObject 0.98% firefox /usr/lib64/firefox-3.5.2/firefox 0x000000000000dd23 b [.] arena_ralloc [acme@doppio linux-2.6-tip]$ The new field is just after the symbol address. To help in figuring out symbol resolution bugs. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-11perf report: Adjust column width to the values sampledArnaldo Carvalho de Melo
Auto-adjust column width of perf report output to the longest occuring string length. Example: [acme@doppio pahole]$ perf report --sort comm,dso,symbol | head -13 12.79% pahole /usr/lib64/libdw-0.141.so [.] __libdw_find_attr 8.90% pahole /lib64/libc-2.10.1.so [.] _int_malloc 8.68% pahole /usr/lib64/libdw-0.141.so [.] __libdw_form_val_len 8.15% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 6.80% pahole /lib64/libc-2.10.1.so [.] __tsearch 5.54% pahole ./build/libdwarves.so.1.0.0 [.] tag__recode_dwarf_type [acme@doppio pahole]$ [acme@doppio pahole]$ perf report --sort comm,dso,symbol -d /lib64/libc-2.10.1.so | head -10 21.92% pahole /lib64/libc-2.10.1.so [.] _int_malloc 20.08% pahole /lib64/libc-2.10.1.so [.] __GI_strcmp 16.75% pahole /lib64/libc-2.10.1.so [.] __tsearch [acme@doppio pahole]$ Also add these extra options to control the new behaviour: -w, --field-width Force each column width to the provided list, for large terminal readability. -t, --field-separator: Use a special separator character and don't pad with spaces, replacing all occurances of this separator in symbol names (and other output) with a '.' character, that thus it's the only non valid separator. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic 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: <20090711014728.GH3452@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03perf_counter tools: Adjust symbols in ET_EXEC files tooArnaldo Carvalho de Melo
Ingo Molnar wrote: > i just bisected a 'perf report' bug that would cause us to not > resolve all user-space symbols in a 'git gc' run to: > > f5812a7a336fb952d819e4427b9a2dce02368e82 is first bad commit > commit f5812a7a336fb952d819e4427b9a2dce02368e82 > Author: Arnaldo Carvalho de Melo <acme@redhat.com> > Date: Tue Jun 30 11:43:17 2009 -0300 > > perf_counter tools: Adjust only prelinked symbol's addresses Rename ->prelinked to ->adjust_symbols and making what was done only for prelinked libraries also to ET_EXEC binaries, such as /usr/bin/git: [acme@doppio pahole]$ readelf -h /usr/bin/git | grep Type Type: EXEC (Executable file) [acme@doppio pahole]$ And after installing the 'git-debuginfo' package, I get correct results: [acme@doppio linux-2.6-tip]$ perf report --sort comm,dso,symbol -d /usr/bin/git | head -20 # # (1139614 samples) # # Overhead Command Shared Object Symbol # ........ ................ ......................... ...... # 34.98% git /usr/bin/git [.] send_sideband 33.39% git /usr/bin/git [.] enter_repo 6.81% git /usr/bin/git [.] diff_opt_parse 4.95% git /usr/bin/git [.] is_repository_shallow 3.24% git /usr/bin/git [.] odb_mkstemp 1.39% git /usr/bin/git [.] output 1.34% git /usr/bin/git [.] xmmap 1.25% git /usr/bin/git [.] receive_pack_config 1.16% git /usr/bin/git [.] git_pathdup 0.90% git /usr/bin/git [.] read_object_with_reference 0.86% git /usr/bin/git [.] show_patch_diff 0.85% git /usr/bin/git 0x00000000095e2e 0.69% git /usr/bin/git [.] display [acme@doppio linux-2.6-tip]$ I'll check what are the last cases where we can't resolve symbols, like this 0x00000000095e2e later. And I guess this will fix the problems Mike were seeing too: [acme@doppio linux-2.6-tip]$ readelf -h ../build/perf/vmlinux | grep Type Type: EXEC (Executable file) [acme@doppio linux-2.6-tip]$ Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-02perf_counter tools: Connect module support infrastructure to symbol loading ↵Mike Galbraith
infrastructure Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246514916.13293.46.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Share list.h with the kernelArnaldo Carvalho de Melo
The copy we were using came from another copy I did for the dwarves (pahole) package, that came from the kernel years ago. The only function that is used by the perf tools and that isn't in the kernel is list_del_range, that I'm leaving in the perf tools only for now. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090701174608.GA5823@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Share rbtree.with the kernelArnaldo Carvalho de Melo
The tools/perf/util/rbtree.c copy already drifted by three csets: 4b324126e0c6c3a5080ca3ec0981e8766ed6f1ee 4c60117811171d867d4f27f17ea07d7419d45dae 16c047add3ceaf0ab882e3e094d1ec904d02312d So remove the copy and use the lib/rbtree.c directly, sharing the source code while still generating a separate object file, since tools/perf uses a far more agressive -O6 switch. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090701152837.GG15682@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-30perf_counter tools: Adjust only prelinked symbol's addressesArnaldo Carvalho de Melo
I.e. we can't handle these two kinds of files in the same way: 1) prelinked system library: [acme@doppio pahole]$ readelf -s /usr/lib64/libdw-0.141.so | egrep 'FUNC.+GLOBAL.+dwfl_report_elf' 278: 00000030450105a0 261 FUNC GLOBAL DEFAULT 12 dwfl_report_elf@@ELFUTILS_0.122 2) not prelinked library with debug information from a -debuginfo package: [acme@doppio pahole]$ readelf -s /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | egrep 'FUNC.+GLOBAL.+dwfl_report_elf' 629: 00000000000105a0 261 FUNC GLOBAL DEFAULT 12 dwfl_report_elf [acme@doppio pahole]$ Now the numbers I got for a pahole perf run are in line with the numbers I get from oprofile. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090630144317.GB12663@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf_counter tools: Rework the file formatPeter Zijlstra
Create a structured file format that includes the full perf_counter_attr and all its relevant counter IDs so that the reporting program has full information. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-19perf_counter tools: Define and use our own u64, s64 etc. definitionsPaul Mackerras
On 64-bit powerpc, __u64 is defined to be unsigned long rather than unsigned long long. This causes compiler warnings every time we print a __u64 value with %Lx. Rather than changing __u64, we define our own u64 to be unsigned long long on all architectures, and similarly s64 as signed long long. For consistency we also define u32, s32, u16, s16, u8 and s8. These definitions are put in a new header, types.h, because these definitions are needed in util/string.h and util/symbol.h. The main change here is the mechanical change of __[us]{64,32,16,8} to remove the "__". The other changes are: * Create types.h * Include types.h in perf.h, util/string.h and util/symbol.h * Add types.h to the LIB_H definition in Makefile * Added (u64) casts in process_overflow_event() and print_sym_table() to kill two remaining warnings. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: benh@kernel.crashing.org LKML-Reference: <19003.33494.495844.956580@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-13perf annotate: Print the filename:line for annotated colored linesFrederic Weisbecker
When we have a colored line in perf annotate, ie a middle/high overhead one, it's sometimes useful to get the matching line and filename from the source file, especially this path prepares to another subsequent one which will print a sorted summary of midle/high overhead lines in the beginning of the output. Filename:Lines have the same color than the concerned ip lines. It can be slow because it relies on addr2line. We could also use objdump with -l but that implies we would have to bufferize objdump output and parse it to filter the relevant lines since we want to print a sorted summary in the beginning. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1244844682-12928-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-11perf_counter tools: Clean up u64 usageIngo Molnar
A build error slipped in: builtin-report.c: In function ‘hist_entry__fprintf’: builtin-report.c:711: error: format ‘%12d’ expects type ‘int’, but argument 3 has type ‘uint64_t’ Because we got a bit sloppy with those types. uint64_t really sucks, because there's no printf format for it. So standardize on __u64 instead - for all types that go to or come from the ABI (which is __u64), or for values that need to be large enough even on 32-bit. 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: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-06perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/Ingo Molnar
Several people have suggested that 'perf' has become a full-fledged tool that should be moved out of Documentation/. Move it to the (new) tools/ directory. 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: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>