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2009-07-01perf_counter tools: Rework event string parsing/syntaxPaul Mackerras
This reworks the parser for event descriptors to make it more consistent in what it accepts. It is now structured as a recursive descent parser for the following grammar: events ::= event ( ("," | space) space* event )* event ::= ( raw_event | numeric_event | symbolic_event | generic_hw_event ) [ event_modifier ] raw_event ::= "r" hex_number numeric_event ::= number ":" number number ::= decimal_number | "0x" hex_number | "0" octal_number symbolic_event ::= string_from_event_symbols_array generic_hw_event::= cache_type ( "-" ( cache_op | cache_result ) )* event_modifier ::= ":" ( "u" | "k" | "h" )+ with the extra restriction that you can have at most one cache_op and at most one cache_result. We pass the current string pointer by reference (i.e. as a const char **) to the various parsing functions so that they can advance the pointer to indicate how much they consumed. They return 0 if they didn't recognize the thing at the pointer or 1 if they did (and advance the pointer past it). This also fixes parse_aliases to take the longest matching alias from the table, not the first one. Otherwise "l1-data" would match the "l1-d" alias and the "ata" would not be consumed. This allows event modifiers indicating what processor modes to count in to be applied to any event, not just numeric events, and adds a ":h" modifier to indicate counting in hypervisor mode. Specifying ":u" now sets both exclude_kernel and exclude_hv, and so on. Multiple modes can be specified, e.g. ":uk" will count in user or hypervisor mode (i.e. only exclude_kernel will be set). Signed-off-by: Paul Mackerras <paulus@samba.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: <19018.53826.843815.189847@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Various fixes for callchainsFrederic Weisbecker
The symbol resolving has of course revealed some bugs in the callchain tree handling. This patch fixes some of them, including: - inherit the children from the parents while splitting a node - fix list range moving - fix indexes setting in callchains - create a child on the current node if the path doesn't match in the existent children (was only done on the root) - compare using symbols when possible so that we can match a function using any ip inside by referring to its start address. The practical effects are: - remove double callchains - fix upside down or any random order of callchains - fix wrong paths - fix bad hits and percentage accounts 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> Cc: Anton Blanchard <anton@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246419315-9968-4-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Resolve symbols in callchainsFrederic Weisbecker
This patch resolves the names, when possible, of each ip present in the callchains while using the -c option with perf report. Example: 5.40% [k] __d_lookup 5.37% perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at sys_faccessat sys_access system_call_fastpath 0x7fb609846f77 0.01% perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at sys_faccessat 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> Cc: Anton Blanchard <anton@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246419315-9968-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Fix storage size allocation of callchain listFrederic Weisbecker
Fix a confusion while giving the size of a callchain list during its allocation. We are using the wrong structure size. 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> Cc: Anton Blanchard <anton@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246419315-9968-2-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01Merge branch 'linus' into perfcounters/urgentIngo Molnar
Merge reason: this branch was on a .30-ish base before, update it to an almost-.31-rc2 upstream base to pick up fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-30Merge branch 'perfcounters-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (47 commits) perf report: Add --symbols parameter perf report: Add --comms parameter perf report: Add --dsos parameter perf_counter tools: Adjust only prelinked symbol's addresses perf_counter: Provide a way to enable counters on exec perf_counter tools: Reduce perf stat measurement overhead/skew perf stat: Use percentages for scaling output perf_counter, x86: Update x86_pmu after WARN() perf stat: Micro-optimize the code: memcpy is only required if no event is selected and !null_run perf stat: Improve output perf stat: Fix multi-run stats perf stat: Add -n/--null option to run without counters perf_counter tools: Remove dead code perf_counter: Complete counter swap perf report: Print sorted callchains per histogram entries perf_counter tools: Prepare a small callchain framework perf record: Fix unhandled io return value perf_counter tools: Add alias for 'l1d' and 'l1i' perf-report: Add bare minimum PERF_EVENT_READ parsing perf-report: Add modes for inherited stats and no-samples ...
2009-07-01perf report: Add hypervisor dsoAnton Blanchard
Add a dso for hypervisor samples. We don't get any symbol information on the ppc64 hypervisor but this at least gives us a high level summary of the time spent in there. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230141.182536873@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf report: Fix reporting of hypervisorAnton Blanchard
PERF_EVENT_MISC_* is not a bitmask, so we have to mask and compare. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230141.088394681@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf top: Add ppc64 specific skip symbols and strip ppc64 . prefixAnton Blanchard
Filter out some ppc64 specific idle loop functions and remove leading '.' on ppc64 text symbols. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230140.995643441@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf top: Move skip symbols to an arrayAnton Blanchard
Move the list of symbols we skip into an array, making it easier to add new ones. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230140.904782938@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf_counter tools: Remove zlib dependencyAnton Blanchard
The zlib devel libraries may not be installed and since we aren't using zlib we may as well remove it. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230140.802078956@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf report: Fix -z optionAnton Blanchard
Fix a copy and paste error, -z was setting the group option. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org LKML-Reference: <20090630230140.714204656@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf report: Add --symbols parameterArnaldo Carvalho de Melo
So that we can filter by symbol name. The 'pfunct' utility in the 'dwarves' package can be used to create a file with the functions one wants. Example: [acme@doppio pahole]$ pfunct /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | grep dwarf > /tmp/dwarf.symbols [acme@doppio pahole]$ wc -l /tmp/dwarf.symbols 93 /tmp/dwarf.symbols [acme@doppio pahole]$ head -3 /tmp/dwarf.symbols dwfl_addrdwarf dwfl_module_getdwarf dwfl_getdwarf [acme@doppio pahole]$ perf report --sort comm,dso,symbol --comms pahole --dsos /usr/lib64/libdw-0.141.so --symbols file:///tmp/dwarf.symbols 33.99% pahole /usr/lib64/libdw-0.141.so [.] dwarf_tag 29.07% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_file 27.71% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getsrclines 4.54% pahole /usr/lib64/libdw-0.141.so 0x00000000007400 3.93% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_line 0.46% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getlocation 0.18% pahole /usr/lib64/libdw-0.141.so [.] __libdwarf_next_prime 0.13% pahole /usr/lib64/libdw-0.141.so [.] dwarf_diecu [acme@doppio pahole]$ 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> LKML-Reference: <1246399282-20934-4-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf report: Add --comms parameterArnaldo Carvalho de Melo
So that we can filter by comm. Symbols in other comms won't be accounted for. 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> LKML-Reference: <1246399282-20934-3-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-01perf report: Add --dsos parameterArnaldo Carvalho de Melo
So that we can filter by dso. Symbols in other dsos won't be accounted for. 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> LKML-Reference: <1246399282-20934-2-git-send-email-acme@redhat.com> 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>
2009-06-30perf_counter: Provide a way to enable counters on execPaul Mackerras
This provides a way to mark a counter to be enabled on the next exec. This is useful for measuring the total activity of a program without including overhead from the process that launches it. This also changes the perf stat command to use this new facility. Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <19017.43927.838745.689203@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-29perf_counter tools: Reduce perf stat measurement overhead/skewPaul Mackerras
Vince Weaver reported a 'perf stat' measurement overhead in the count of retired instructions, which can amount to a +6000 instructions inflated count in the reported count. At present, perf stat creates its counters on the perf process. Thus the counters count the fork and various other activity in both the parent and child, such as the resolver overhead for resolving PLT entries for any libc functions that haven't been called before, such as execvp. This reduces the overhead by creating the counters on the child process after the fork, using a couple of pipes to synchronize so that the child process waits until the parent has created the counters before doing the exec. To eliminate the PLT resolution overhead on calling execvp, this does a dummy execvp first which will always fail. With this, the overhead of executing a program goes down from over 4800 instructions to about 90 instructions on powerpc (32-bit). This was measured with a statically-linked program written in assembler which only does the 3 instructions needed to call _exit(0). Before: $ perf stat -e 0:1:u ./three Performance counter stats for './three': 4858 instructions 0.001274523 seconds time elapsed After: $ perf stat -e 0:1:u ./three Performance counter stats for './three': 92 instructions 0.000468153 seconds time elapsed Reported-by: Vince Weaver <vince@deater.net> Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <19016.41425.814043.870352@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-29perf stat: Use percentages for scaling outputIngo Molnar
Peter expressed a strong preference for percentage based display of scaled values - so revert to that from the recently introduced multiplication-factor unit. Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jaswinder Singh Rajput <jaswinder@kernel.org> 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>
2009-06-28perf stat: Micro-optimize the code: memcpy is only required if no event is ↵Jaswinder Singh Rajput
selected and !null_run Set attrs and nr_counters if no event is selected and !null_run. Setting of attrs should depend on number of counters, so we need to memcpy only for sizeof(default_attrs) Also set nr_counters as ARRAY_SIZE(default_attrs) in place of hardcoded value. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1246126749.32198.16.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-27perf stat: Improve outputJaswinder Singh Rajput
Increase size for event name to handle bigger names like 'L1-d$-prefetch-misses' Changed scaled counters from percentage to a multiplicative factor because the latter is more expressive. Also aligned the scaling factor, otherwise sometimes it looks like: 384 iTLB-load-misses (4.74x scaled) 452029 branch-loads (8.00x scaled) 5892 branch-load-misses (20.39x scaled) 972315 iTLB-loads (3.24x scaled) Before: 150708 L1-d$-stores (scaled from 23.57%) 428804 L1-d$-prefetches (scaled from 23.47%) 314446 L1-d$-prefetch-misses (scaled from 23.42%) 252626137 L1-i$-loads (scaled from 23.24%) 5297550 dTLB-load-misses (scaled from 23.96%) 106992392 branch-loads (scaled from 23.67%) 5239561 branch-load-misses (scaled from 23.43%) After: 1731713 L1-d$-loads ( 14.25x scaled) 44241 L1-d$-prefetches ( 3.88x scaled) 21076 L1-d$-prefetch-misses ( 3.40x scaled) 5789421 L1-i$-loads ( 3.78x scaled) 29645 dTLB-load-misses ( 2.95x scaled) 461474 branch-loads ( 6.52x scaled) 7493 branch-load-misses ( 26.57x scaled) Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1246051927.2988.10.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-27perf stat: Fix multi-run statsIngo Molnar
In multi-run (-r/--repeat) printouts, print out the noise of the wall-clock average as well. Also, fix a bug in printing out scaled counters: if it was not scaled then we should not update the average with -1. 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>
2009-06-27perf stat: Add -n/--null option to run without countersIngo Molnar
Allow a no-counters run. This can be useful to measure just elapsed wall-clock time - or to assess the raw overhead of perf stat itself, without running any counters. 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>
2009-06-27perf_counter tools: Remove dead codeIngo Molnar
Vince Weaver reported that there's a handful of #ifdef __MINGW32__ sections in the code. Remove them as they are in essence dead code - as unlike upstream Git, the perf tool is unlikely to be ported to Windows. Reported-by: Vince Weaver <vince@deater.net> 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>
2009-06-26perf report: Print sorted callchains per histogram entriesFrederic Weisbecker
Use the newly created callchains radix tree to gather the chains stats from the recorded events and then print the callchains for all of them, sorted by hits, using the "-c" parameter with perf report. Example: 66.15% [k] atm_clip_exit 63.08% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c 0xffffffff810194f3 0xffffffff8106ab7f 0xffffffff8106abe5 0xffffffff8106acde 0xffffffff8100d94b 0xffffffff8153e7ea [...] 1.54% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c [...] Symbols are not yet resolved. 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: <1246026481-8314-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-26perf_counter tools: Prepare a small callchain frameworkFrederic Weisbecker
We plan to display the callchains depending on some user-configurable parameters. To gather the callchains stats from the recorded stream in a fast way, this patch introduces an ad hoc radix tree adapted for callchains and also a rbtree to sort these callchains once we have gathered every events from the stream. 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: <1246026481-8314-2-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf record: Fix unhandled io return valueFrederic Weisbecker
Building latest perfcounter fails on the following error: builtin-record.c: In function ‘create_counter’: builtin-record.c:451: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result make: *** [builtin-record.o] Erreur 1 Just check if we successfully read the perf file descriptor. 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> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1245961287-5327-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf_counter tools: Add alias for 'l1d' and 'l1i'Jaswinder Singh Rajput
Add 'l1d' and 'l1i' aliases again as shortcuts - just dont make them the primary display alias. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1245945462.9157.11.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf-report: Add bare minimum PERF_EVENT_READ parsingPeter Zijlstra
Provide the basic infrastructure to provide per task stats. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf-report: Add modes for inherited stats and no-samplesPeter Zijlstra
Now that we can collect per task statistics, add modes that make use of that facility. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf_counter: Rework the sample ABIPeter Zijlstra
The PERF_EVENT_READ implementation made me realize we don't actually need the sample_type int the output sample, since we already have that in the perf_counter_attr information. Therefore, remove the PERF_EVENT_MISC_OVERFLOW bit and the event->type overloading, and imply put counter overflow samples in a PERF_EVENT_SAMPLE type. This also fixes the issue that event->type was only 32-bit and sample_type had 64 usable bits. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> 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>
2009-06-25perf_counter tools: Shorten names for eventsJaswinder Singh Rajput
Added new alias for events. On AMD box: $ ./perf stat -e l1d -e l1d-misses -e l1d-write -e l1d-prefetch -e l1d-prefetch-miss -e l1i -e l1i-misses -e l1i-prefetch -e l2 -e l2-misses -e l2-write -e dtlb -e dtlb-misses -e itlb -e itlb-misses -e bpu -e bpu-misses -- ls -lR /usr/include/ > /dev/null Before : Performance counter stats for 'ls -lR /usr/include/': 248064467 L1-data-Cache-Load-Referencees (scaled from 23.27%) 1001433 L1-data-Cache-Load-Misses (scaled from 23.34%) 153691 L1-data-Cache-Store-Referencees (scaled from 23.34%) 423248 L1-data-Cache-Prefetch-Referencees (scaled from 23.33%) 302138 L1-data-Cache-Prefetch-Misses (scaled from 23.25%) 251217546 L1-instruction-Cache-Load-Referencees (scaled from 23.25%) 5757005 L1-instruction-Cache-Load-Misses (scaled from 23.23%) 93435 L1-instruction-Cache-Prefetch-Referencees (scaled from 23.24%) 6496073 L2-Cache-Load-Referencees (scaled from 23.32%) 609485 L2-Cache-Load-Misses (scaled from 23.45%) 6876991 L2-Cache-Store-Referencees (scaled from 23.71%) 248922840 Data-TLB-Cache-Load-Referencees (scaled from 23.94%) 5828386 Data-TLB-Cache-Load-Misses (scaled from 24.17%) 257613506 Instruction-TLB-Cache-Load-Referencees (scaled from 24.20%) 6833 Instruction-TLB-Cache-Load-Misses (scaled from 23.88%) 109043606 Branch-Cache-Load-Referencees (scaled from 23.64%) 5552296 Branch-Cache-Load-Misses (scaled from 23.42%) 0.413702461 seconds time elapsed. After : Peformance counter stats for 'ls -lR /usr/include/': 266590464 L1-d$-loads (scaled from 23.03%) 1222273 L1-d$-load-misses (scaled from 23.58%) 146204 L1-d$-stores (scaled from 23.83%) 406344 L1-d$-prefetches (scaled from 24.09%) 283748 L1-d$-prefetch-misses (scaled from 24.10%) 249650965 L1-i$-loads (scaled from 23.80%) 3353961 L1-i$-load-misses (scaled from 23.82%) 104599 L1-i$-prefetches (scaled from 23.68%) 4836405 LLC-loads (scaled from 23.67%) 498214 LLC-load-misses (scaled from 23.66%) 4953994 LLC-stores (scaled from 23.64%) 243354097 dTLB-loads (scaled from 23.77%) 6468584 dTLB-load-misses (scaled from 23.74%) 249719549 iTLB-loads (scaled from 23.25%) 5060 iTLB-load-misses (scaled from 23.00%) 112343016 branch-loads (scaled from 22.76%) 5528876 branch-load-misses (scaled from 22.54%) 0.427154051 seconds time elapsed. Reported-by : Ingo Molnar <mingo@elte.hu> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245934522.5308.39.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf_counter tools: Check for valid cache operationsJaswinder Singh Rajput
Made new table for cache operartion stat 'hw_cache_stat' as: L1I : Read and prefetch only ITLB and BPU : Read-only introduce is_cache_op_valid() for cache operation validity And checks for valid cache operations. Reported-by : Ingo Molnar <mingo@elte.hu> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245930367.5308.33.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf record: Fix filemap pathname parsing in /proc/pid/mapsJohannes Weiner
Looking backward for the first space from the end of a line in /proc/pid/maps does not find the start of the pathname of the mapped file if it contains a space. Since the only slashes we have in this file occur in the (absolute!) pathname column of file mappings, looking for the first slash in a line is a safe method to find the name. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090624190835.GA25548@cmpxchg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25perf_counter tools: add cpu_relax()/rmb() definitions for sh.Paul Mundt
Simple cpu_relax()/rmb() stubs that perf needs, which were inadvertently omitted from the sh HAVE_PERF_COUNTERS patch. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-24perf_counter tools: Add CREDITS file for Git contributorsIngo Molnar
Much of perf's libraries comes from the Git project. I noticed that the files (in tools/perf/util/*.[ch] and elsewhere) are quite spartan wrt. credits, so lets add a CREDITS file that includes an (incomplete!) list of main contributors. Thanks guys, these libraries are really useful. Special thanks go to Johannes Schindelin and Junio C Hamano for coming up with this list. List-Composed-By: Johannes Schindelin <Johannes.Schindelin@gmx.de> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-24perf stat: Remove dead codeJaswinder Singh Rajput
Remove dead code and do some code alignment. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245847774.2681.2.camel@ht.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-24perf_counter tools: Fix strbuf_fread() error path handlingRoel Kluin
size_t res cannot be less than 0 - fread returns 0 on error. [ Updated by: René Scharfe <rene.scharfe@lsrfire.ath.cx> ] Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Junio C Hamano <gitster@pobox.com> LKML-Reference: <4A3FB479.2090902@lsrfire.ath.cx> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-23perf stat: Fix verbose for perf statJaswinder Singh Rajput
Error message should use stderr for verbose (-v), otherwise message will be lost for: $ ./perf stat -v <cmd> > /dev/null For example on AMD bus-cycles event is not available so now it looks like: $ ./perf stat -v -e bus-cycles ls > /dev/null Error: counter 0, sys_perf_counter_open() syscall returned with -1 (Invalid argument) Performance counter stats for 'ls': <not counted> bus-cycles 0.006765877 seconds time elapsed. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245757369.3776.1.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-23perf report: Fix help text typoIngo Molnar
Reported-by: Brice Goglin <Brice.Goglin@inria.fr> 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>
2009-06-23perf_counter tools: Handle overlapping MMAP eventsPeter Zijlstra
Martin Schwidefsky reported "perf report" symbol resolution problems on S390. Since we only report MMAP, not MUNMAP, we have to deal with overlapping maps. We used to simply throw out the old map on the assumption whole maps got unmapped. This obviously doesn't deal with partial unmaps. However it appears some dynamic linkers do fancy partial unmaps (s390), so do something more elaborate and truncate the old maps, only removing them when they've been fully covered. This resolves (part of) the S390 symbol resolution problems. Reported-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Tested-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: 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>
2009-06-23perf stat: Fix command option / manpageJaswinder Singh Rajput
-l is not supported, it should be -S for scale. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245703959.6167.16.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-22perf_counter tools: Set alias for page-faultsJaswinder Singh Rajput
"faults" should be alias for "page-faults" Also fixed alignment and 80 characters issue Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245683846.12092.1.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-22perf report: Output more symbol related debug dataPeter Zijlstra
Print more symbol relocation related info under -vv. Signed-off-by: Peter Zijlstra <peterz@infradead.org> 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>
2009-06-22perf_counter tools: Introduce alias member in event_symbolJaswinder Singh Rajput
By introducing alias member in event_symbol : 1. duplicate lines are removed, like: cpu-cycles and cycles branch-instructions and branches context-switches and cs cpu-migrations and migrations 2. We can also add alias for another events. Now ./perf list looks like : List of pre-defined events (to be used in -e): cpu-cycles OR cycles [Hardware event] instructions [Hardware event] cache-references [Hardware event] cache-misses [Hardware event] branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cpu-clock [Software event] task-clock [Software event] page-faults [Software event] faults [Software event] minor-faults [Software event] major-faults [Software event] context-switches OR cs [Software event] cpu-migrations OR migrations [Software event] rNNN [raw hardware event descriptor] Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245669268.17153.8.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-22perf_counter tools: Define separate declarations for H/W and S/W eventsJaswinder Singh Rajput
Define separate declarations for H/W and S/W events to: 1. Shorten name to save some space so that we can add more members 2. Fix alignment 3. Avoid declaring HARDWARE/SOFTWARE again and again. Removed unused CR(x, y) Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245669194.17153.6.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-22[S390] Enable tick based perf_counter on s390.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-21perf_counter tools: Fix vmlinux fallback when running on a different kernelIngo Molnar
Lucas De Marchi reported that perf report and perf annotate displays mismatching profile if a perf.data is analyzed on an older kernel - even if the correct vmlinux is specified via the -k option. The reason is the fallback path in util/symbol.c:dso__load_kernel(): int dso__load_kernel(struct dso *self, const char *vmlinux, symbol_filter_t filter, int verbose) { int err = -1; if (vmlinux) err = dso__load_vmlinux(self, vmlinux, filter, verbose); if (err) err = dso__load_kallsyms(self, filter, verbose); return err; } dso__load_vmlinux() returns negative on error, but on success it returns the number of symbols loaded - which confuses the function to load the kallsyms. This is normally harmless, as reporting is usually performed on the same kernel that is analyzed - but if there's a mismatch then we load the wrong kallsyms and create a non-sensical symbol tree. The fix is to only fall back to kallsyms on errors. Reported-by: Lucas De Marchi <lucas.de.marchi@gmail.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: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-20perfcounter: Handle some IO return valuesFrederic Weisbecker
Building perfcounter tools raises the following warnings: builtin-record.c: In function ‘atexit_header’: builtin-record.c:464: erreur: ignoring return value of ‘pwrite’, declared with attribute warn_unused_result builtin-record.c: In function ‘__cmd_record’: builtin-record.c:503: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result builtin-report.c: In function ‘__cmd_report’: builtin-report.c:1403: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result This patch handles these IO return values. 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> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1245456100-5477-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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