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2010-02-04perf symbols: Remove perf_session usage in symbols layerArnaldo Carvalho de Melo
I noticed while writing the first test in 'perf regtest' that to just test the symbol handling routines one needs to create a perf session, that is a layer centered on a perf.data file, events, etc, so I untied these layers. This reduces the complexity for the users as the number of parameters to most of the symbols and session APIs now was reduced while not adding more state to all the map instances by only having data that is needed to split the kernel (kallsyms and ELF symtab sections) maps and do vmlinux relocation on the main kernel map. 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: <1265223128-11786-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-29Merge branch 'perf/urgent' into perf/coreIngo Molnar
Merge reason: We want to queue up a dependent patch. Also update to later -rc's. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-29perf session: Create kernel maps in the constructorArnaldo Carvalho de Melo
Removing one extra step needed in the tools that need this, fixing a bug in 'perf probe' where this was not being done. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Masami Hiramatsu <mhiramat@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: <1264633557-17597-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-20perf kmem: Print usage help for unknown commandsPekka Enberg
This patch fixes "perf kmem" to print usage help instead of doing nothing. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> LKML-Reference: <1263921971-10782-1-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-20perf kmem: Increase "Hit" column lengthPekka Enberg
It's fairly easy to overflow the "Hit" column with just few seconds of tracing so increase the column length to avoid broken formatting. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> LKML-Reference: <1263921803-10214-1-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-16perf tools: Don't cast RIP to pointersArnaldo Carvalho de Melo
Since they can come from another architecture with bigger pointers, i.e. processing a 64-bit perf.data on a 32-bit arch. 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: <1263478990-8200-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-13perf tools: Encode kernel module mappings in perf.dataArnaldo Carvalho de Melo
We were always looking at the running machine /proc/modules, even when processing a perf.data file, which only makes sense when we're doing 'perf record' and 'perf report' on the same machine, and in close sucession, or if we don't use modules at all, right Peter? ;-) Now, at 'perf record' time we read /proc/modules, find the long path for modules, and put them as PERF_MMAP events, just like we did to encode the reloc reference symbol for vmlinux. Talking about that now it is encoded in .pgoff, so that we can use .{start,len} to store the address boundaries for the kernel so that when we reconstruct the kmaps tree we can do lookups right away, without having to fixup the end of the kernel maps like we did in the past (and now only in perf record). One more step in the 'perf archive' direction when we'll finally be able to collect data in one machine and analyse in another. 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: <1263396139-4798-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-13Merge branch 'perf/urgent' into perf/coreIngo Molnar
Merge reason: queue up dependent patch, update to -rc4 Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28perf kmem: Fix statistics typoWenji Huang
Replace bytes_req with bytes_alloc. Signed-off-by: Wenji Huang <wenji.huang@oracle.com> Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Cc: acme@redhat.com LKML-Reference: <1261389175-2227-1-git-send-email-wenji.huang@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28perf tools: Do a few more directory handling optimizationsUlrich Drepper
A few more optimizations for perf when dealing with directories. Some of them significantly cut down the work which has to be done. d_type should always be set; otherwise fix the kernel code. And there are functions available to parse fstab-like files, so use them. Signed-off-by: Ulrich Drepper <drepper@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: a.p.zijlstra@chello.nl Cc: acme@redhat.com Cc: eranian@google.com Cc: fweisbec@gmail.com Cc: lizf@cn.fujitsu.com Cc: paulus@samba.org Cc: xiaoguangrong@cn.fujitsu.com LKML-Reference: <200912192140.nBJLeSfA028905@hs20-bc2-1.build.redhat.com> [ v2: two small stylistic fixlets ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28perf session: Remove redundant prefix & suffix from perf_event_opsArnaldo Carvalho de Melo
Since now all that we have are perf event handlers, leave just the name of the event. 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: <1261957026-15580-9-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28perf session: Remove sample_type_check from event_opsArnaldo Carvalho de Melo
This is really something tools need to do before asking for the events to be processed, leaving perf_session__process_events to do just that, process events. Also add a msg parameter to perf_session__has_traces() so that the right message can be printed, fixing a regression added by me in the previous cset (right timechart message) and also fixing 'perf kmem', that was not asking if 'perf kmem record' was ran. 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: <1261957026-15580-6-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28perf session: Share the common trace sample_check routine as ↵Arnaldo Carvalho de Melo
perf_session__has_traces 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: <1261957026-15580-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-16perf symbols: Adopt the strlists for dso, commArnaldo Carvalho de Melo
Will be used in perf diff too. 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: <1260914682-29652-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-16perf symbols: Make symbol_conf globalArnaldo Carvalho de Melo
This simplifies a lot of functions, less stuff to be done by tool writers. 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: <1260914682-29652-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Adopt the sample_type variableArnaldo Carvalho de Melo
All tools had copies, and perf diff would have to specify a sample_type_check method just for copying it. 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: <1260807780-19377-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Move the hist_entries rb tree to perf_sessionArnaldo Carvalho de Melo
As we'll need to sort multiple times for multiple perf sessions, so that we can then do a diff. 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: <1260803439-16783-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Move kmaps to perf_sessionArnaldo Carvalho de Melo
There is still some more work to do to disentangle map creation from DSO loading, but this happens only for the kernel, and for the early adopters of perf diff, where this disentanglement matters most, we'll be testing different kernels, so no problem here. Further clarification: right now we create the kernel maps for the various modules and discontiguous kernel text maps when loading the DSO, we should do it as a two step process, first creating the maps, for multiple mappings with the same DSO store, then doing the dso load just once, for the first hit on one of the maps sharing this DSO backing store. 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: <1260741029-4430-6-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Move the global threads list to perf_sessionArnaldo Carvalho de Melo
So that we can process two perf.data files. We still need to add a O_MMAP mode for perf_session so that we can do all the mmap stuff in it. 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: <1260741029-4430-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Reduce the number of parms to perf_session__process_eventsArnaldo Carvalho de Melo
By having the cwd/cwdlen in the perf_session struct and full_paths in perf_event_ops. Now its just a matter of passing the ops. 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: <1260741029-4430-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Register the idle thread in perf_session__process_eventsArnaldo Carvalho de Melo
No need for all tools to register it and then immediately call perf_session__process_events. 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: <1260741029-4430-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Ditch register_perf_file_handlerArnaldo Carvalho de Melo
Pass the event_ops to perf_session__process_events instead. Also move the event_ops definition to session.h, starting to move things around to their right place, trimming the many unneeded headers we have. 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: <1260741029-4430-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-14perf session: Pass the perf_session to the event handling operationsArnaldo Carvalho de Melo
They will need it to get the right threads list, etc. 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: <1260741029-4430-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-12perf tools: Introduce perf_session classArnaldo Carvalho de Melo
That does all the initialization boilerplate, opening the file, reading the header, checking if it is valid, etc. And that will as well have the threads list, kmap (now) global variable, etc, so that we can handle two (or more) perf.data files describing sessions to compare. 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: <1260573842-19720-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-12perf symbols: Rename kthreads to kmaps, using another abstraction for itArnaldo Carvalho de Melo
Using a struct thread instance just to hold the kernel space maps (vmlinux + modules) is overkill and confuses people trying to understand the perf symbols abstractions. The kernel maps are really present in all threads, i.e. the kernel is a library, not a separate thread. So introduce the 'map_groups' abstraction and use it for the kernel maps, now in the kmaps global variable. It, in turn, will move, together with the threads list to the perf_file abstraction, so that we can support multiple perf_file instances, needed by perf diff. Brainstormed-with: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Eduardo Habkost <ehabkost@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: <1260550239-5372-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-10perf kmem: Fix unused argument build warningIngo Molnar
Fix: builtin-kmem.c: In function 'parse_caller_opt': builtin-kmem.c:690: error: unused parameter 'arg' builtin-kmem.c: In function 'parse_alloc_opt': builtin-kmem.c:697: error: unused parameter 'arg' Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <4B20A195.8030106@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-10perf kmem: Show usage if no option is specifiedLi Zefan
As Ingo suggested, make "perf kmem" show help information. "perf kmem stat [--caller] [--alloc] .." will show memory statistics. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <4B20A195.8030106@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-07perf_event: Eliminate raw->sizeXiao Guangrong
raw->size is not used, this patch just cleans it up. Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4B1C8CC4.4050007@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-07perf_event: Fix raw event processingXiao Guangrong
We use 'data.raw_data' parameter to call process_raw_event(), but data.raw_data buffer not include data size. it can make perf tool crash. This bug was introduced by commit 180f95e29a ("perf: Make common SAMPLE_EVENT parser"). Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4B1C7F45.5080105@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-06perf: Make common SAMPLE_EVENT parserOGAWA Hirofumi
Currently, sample event data is parsed for each commands, and it is assuming that the data is not including other data. (E.g. timechart, trace, etc. can't parse the event if it has PERF_SAMPLE_CALLCHAIN) So, even if we record the superset data for multiple commands at a time, commands can't parse. etc. To fix it, this makes common sample event parser, and use it to parse sample event correctly. (PERF_SAMPLE_READ is unsupported for now though, it seems to be not using.) Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> 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> LKML-Reference: <87hbs48imv.fsf@devron.myhome.or.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-27perf tools: Consolidate symbol resolving across all toolsArnaldo Carvalho de Melo
Now we have a very high level routine for simple tools to process IP sample events: int event__preprocess_sample(const event_t *self, struct addr_location *al, symbol_filter_t filter) It receives the event itself and will insert new threads in the global threads list and resolve the map and symbol, filling all this info into the new addr_location struct, so that tools like annotate and report can further process the event by creating hist_entries in their specific way (with or without callgraphs, etc). It in turn uses the new next layer function: void thread__find_addr_location(struct thread *self, u8 cpumode, enum map_type type, u64 addr, struct addr_location *al, symbol_filter_t filter) This one will, given a thread (userspace or the kernel kthread one), will find the given type (MAP__FUNCTION now, MAP__VARIABLE too in the near future) at the given cpumode, taking vdsos into account (userspace hit, but kernel symbol) and will fill all these details in the addr_location given. Tools that need a more compact API for plain function resolution, like 'kmem', can use this other one: struct symbol *thread__find_function(struct thread *self, u64 addr, symbol_filter_t filter) So, to resolve a kernel symbol, that is all the 'kmem' tool needs, its just a matter of calling: sym = thread__find_function(kthread, addr, NULL); The 'filter' parameter is needed because we do lazy parsing/loading of ELF symtabs or /proc/kallsyms. With this we remove more code duplication all around, which is always good, huh? :-) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1259346563-12568-12-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-27perf tools: Reorganize event processing routines, lotsa dups killedArnaldo Carvalho de Melo
While implementing event__preprocess_sample, that will do all of the symbol lookup in one convenient function, I noticed that util/process_event.[ch] were not being used at all, then started looking if there were other functions that could be shared and... All those functions really don't need to receive offset + head, the only thing they did was common to all of them, so do it at one place instead. Stats about number of each type of event processed now is done in a central place. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1259346563-12568-11-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf symbols: Rename find_symbol routines to find_functionArnaldo Carvalho de Melo
Paving the way for supporting variable in adition to function symbols. 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: <1259074912-5924-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf symbols: Simplify symbol machinery setupArnaldo Carvalho de Melo
And also express its configuration toggles via a struct. Now all one has to do is to call symbol__init(NULL) if the defaults are OK, or pass a struct symbol_conf pointer with the desired configuration. If a tool uses kernel_maps__find_symbol() to look at the kernel and modules mappings for a symbol but didn't call symbol__init() first, that will generate a one time warning too, alerting the subcommand developer that symbol__init() must be called. 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: <1259071517-3242-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf kmem: Measure kmalloc/kfree CPU ping-pong call-sitesLi Zefan
Show statistics for allocations and frees on different cpus: ------------------------------------------------------------------------------------------------------ Callsite | Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag ------------------------------------------------------------------------------------------------------ perf_event_alloc.clone.0+0 | 7504/682 | 7128/648 | 11 | 0 | 5.011% alloc_buffer_head+16 | 288/57 | 280/56 | 5 | 0 | 2.778% radix_tree_preload+51 | 296/296 | 288/288 | 1 | 0 | 2.703% tracepoint_add_probe+32e | 157/31 | 154/30 | 5 | 0 | 1.911% do_maps_open+0 | 796/12 | 792/12 | 66 | 0 | 0.503% sock_alloc_send_pskb+16e | 23780/495 | 23744/494 | 48 | 38 | 0.151% anon_vma_prepare+9a | 3744/44 | 3740/44 | 85 | 0 | 0.107% d_alloc+21 | 64948/164 | 64944/164 | 396 | 0 | 0.006% proc_alloc_inode+23 | 262292/676 | 262288/676 | 388 | 0 | 0.002% create_object+28 | 459600/200 | 459600/200 | 2298 | 71 | 0.000% journal_start+67 | 14440/40 | 14440/40 | 361 | 0 | 0.000% get_empty_filp+df | 53504/256 | 53504/256 | 209 | 0 | 0.000% getname+2a | 823296/4096 | 823296/4096 | 201 | 0 | 0.000% seq_read+2b0 | 544768/4096 | 544768/4096 | 133 | 0 | 0.000% seq_open+6d | 17024/128 | 17024/128 | 133 | 0 | 0.000% mmap_region+2e6 | 11704/88 | 11704/88 | 133 | 0 | 0.000% single_open+0 | 1072/16 | 1072/16 | 67 | 0 | 0.000% __alloc_skb+2e | 12544/256 | 12544/256 | 49 | 38 | 0.000% __sigqueue_alloc+4a | 1296/144 | 1296/144 | 9 | 8 | 0.000% tracepoint_add_probe+6f | 80/16 | 80/16 | 5 | 0 | 0.000% ------------------------------------------------------------------------------------------------------ ... Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B0B6E9F.6020309@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf kmem: Collect cross node allocation statisticsLi Zefan
Show cross node memory allocations: # ./perf kmem SUMMARY ======= ... Cross node allocations: 0/3633 Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B0B6E87.10906@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf kmem: Default to sort by fragmentationLi Zefan
Make the output sort by fragmentation by default. Also make the usage of "--sort" option consistent with other perf tools. That is, we support multi keys: "--sort key1[,key2]...". # ./perf kmem --stat caller ------------------------------------------------------------------------------ Callsite |Total_alloc/Per | Total_req/Per | Hit | Frag ------------------------------------------------------------------------------ __netdev_alloc_skb+23 | 5048/1682 | 4564/1521 | 3| 9.588% perf_event_alloc.clone.0+0 | 7504/682 | 7128/648 | 11| 5.011% tracepoint_add_probe+32e | 157/31 | 154/30 | 5| 1.911% alloc_buffer_head+16 | 456/57 | 448/56 | 8| 1.754% radix_tree_preload+51 | 584/292 | 576/288 | 2| 1.370% ... TODO: - Extract duplicate code in builtin-kmem.c and builtin-sched.c into util/sort.c. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B0B6E72.7010200@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24perf kmem: Add new option to show raw ipLi Zefan
Add option "--raw-ip" to show raw ip instead of symbols: # ./perf kmem --stat caller --raw-ip ------------------------------------------------------------------------------ Callsite |Total_alloc/Per | Total_req/Per | Hit | Frag ------------------------------------------------------------------------------ 0xc05301aa | 733184/4096 | 733184/4096 | 179| 0.000% 0xc0542ba0 | 483328/4096 | 483328/4096 | 118| 0.000% ... Also show symbols with format sym+offset instead of sym/offset. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B0B6E5C.4080900@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-23perf kmem: Resolve symbolsArnaldo Carvalho de Melo
E.g.: [root@doppio linux-2.6-tip]# perf kmem record sleep 3s [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.804 MB perf.data (~35105 samples) ] [root@doppio linux-2.6-tip]# perf kmem --stat caller | head -10 ------------------------------------------------------------------------------ Callsite |Total_alloc/Per | Total_req/Per | Hit | Frag ------------------------------------------------------------------------------ getname/40 | 1519616/4096 | 1519616/4096 | 371| 0.000% seq_read/a2 | 987136/4096 | 987136/4096 | 241| 0.000% __netdev_alloc_skb/43 | 260368/1049 | 259968/1048 | 248| 0.154% __alloc_skb/5a | 77312/256 | 77312/256 | 302| 0.000% proc_alloc_inode/33 | 76480/632 | 76472/632 | 121| 0.010% get_empty_filp/8d | 70272/192 | 70272/192 | 366| 0.000% split_vma/8e | 42064/176 | 42064/176 | 239| 0.000% [root@doppio linux-2.6-tip]# Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: linux-mm@kvack.org <linux-mm@kvack.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1259005869-13487-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-23perf symbols: Look for vmlinux in more placesArnaldo Carvalho de Melo
Now that we can check the buildid to see if it really matches, this can be done safely: vmlinux /boot/vmlinux /boot/vmlinux-<uts.release> /lib/modules/<uts.release>/build/vmlinux /usr/lib/debug/lib/modules/%s/vmlinux More can be added - if you know about distros that put the vmlinux somewhere else please let us know. 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: <1259001550-8194-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-22perf kmem: Add --sort hit and --sort fragPekka Enberg
This patch adds support for "--sort hit" and "--sort frag" to the "perf kmem" tool. The former was already mentioned in the help text and the latter is useful for finding call-sites that exhibit worst case behavior for SLAB allocators. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <1258883880-7149-1-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-20perf: Add 'perf kmem' toolLi Zefan
This tool is mostly a perf version of kmemtrace-user. The following information is provided by this tool: - the total amount of memory allocated and fragmentation per call-site - the total amount of memory allocated and fragmentation per allocation - total memory allocated and fragmentation in the collected dataset - ... Sample output: # ./perf kmem record ^C # ./perf kmem --stat caller --stat alloc -l 10 ------------------------------------------------------------------------------ Callsite | Total_alloc/Per | Total_req/Per | Hit | Fragmentation ------------------------------------------------------------------------------ 0xc052f37a | 790528/4096 | 790528/4096 | 193 | 0.000% 0xc0541d70 | 524288/4096 | 524288/4096 | 128 | 0.000% 0xc051cc68 | 481600/200 | 481600/200 | 2408 | 0.000% 0xc0572623 | 297444/676 | 297440/676 | 440 | 0.001% 0xc05399f1 | 73476/164 | 73472/164 | 448 | 0.005% 0xc05243bf | 51456/256 | 51456/256 | 201 | 0.000% 0xc0730d0e | 31844/497 | 31808/497 | 64 | 0.113% 0xc0734c4e | 17152/256 | 17152/256 | 67 | 0.000% 0xc0541a6d | 16384/128 | 16384/128 | 128 | 0.000% 0xc059c217 | 13120/40 | 13120/40 | 328 | 0.000% 0xc0501ee6 | 11264/88 | 11264/88 | 128 | 0.000% 0xc04daef0 | 7504/682 | 7128/648 | 11 | 5.011% 0xc04e14a3 | 4216/191 | 4216/191 | 22 | 0.000% 0xc05041ca | 3524/44 | 3520/44 | 80 | 0.114% 0xc0734fa3 | 2104/701 | 1620/540 | 3 | 23.004% 0xc05ec9f1 | 2024/289 | 2016/288 | 7 | 0.395% 0xc06a1999 | 1792/256 | 1792/256 | 7 | 0.000% 0xc0463b9a | 1584/144 | 1584/144 | 11 | 0.000% 0xc0541eb0 | 1024/16 | 1024/16 | 64 | 0.000% 0xc06a19ac | 896/128 | 896/128 | 7 | 0.000% 0xc05721c0 | 772/12 | 768/12 | 64 | 0.518% 0xc054d1e6 | 288/57 | 280/56 | 5 | 2.778% 0xc04b562e | 157/31 | 154/30 | 5 | 1.911% 0xc04b536f | 80/16 | 80/16 | 5 | 0.000% 0xc05855a0 | 64/64 | 36/36 | 1 | 43.750% ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Alloc Ptr | Total_alloc/Per | Total_req/Per | Hit | Fragmentation ------------------------------------------------------------------------------ 0xda884000 | 1052672/4096 | 1052672/4096 | 257 | 0.000% 0xda886000 | 262144/4096 | 262144/4096 | 64 | 0.000% 0xf60c7c00 | 16512/128 | 16512/128 | 129 | 0.000% 0xf59a4118 | 13120/40 | 13120/40 | 328 | 0.000% 0xdfd4b2c0 | 11264/88 | 11264/88 | 128 | 0.000% 0xf5274600 | 7680/256 | 7680/256 | 30 | 0.000% 0xe8395000 | 5948/594 | 5464/546 | 10 | 8.137% 0xe59c3c00 | 5748/479 | 5712/476 | 12 | 0.626% 0xf4cd1a80 | 3524/44 | 3520/44 | 80 | 0.114% 0xe5bd1600 | 2892/482 | 2856/476 | 6 | 1.245% ... | ... | ... | ... | ... ------------------------------------------------------------------------------ SUMMARY ======= Total bytes requested: 2333626 Total bytes allocated: 2353712 Total bytes wasted on internal fragmentation: 20086 Internal fragmentation: 0.853375% TODO: - show sym+offset in 'callsite' column - show cross node allocation stats - collect more useful stats? - ... Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B064AF5.9060208@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 12:51:01 +0000