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* Merge branch 'perf/core' into perf/probesIngo Molnar2009-11-17
|\ | | | | | | | | | | | | | | Resolved merge conflict in tools/perf/Makefile Merge reason: we want to queue up a dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Don't die() in do_write()Arnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Propagate the errors instead, the users are the ones to decide what to do if a library call fails. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258427892-16312-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Don't die() in perf_header__new()Arnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Propagate the errors instead, the users are the ones to decide what to do if a library call fails. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258427892-16312-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Don't die() in perf_header_attr__add_id()Arnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Propagate the errors instead, the users are the ones to decide what to do if a library call fails. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258427892-16312-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Don't die() in perf_header__add_attr()Arnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Propagate the errors instead, the users are the ones to decide what to do if a library call fails. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258427892-16312-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf buildid-list: Always show the DSO nameArnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Porcelain can ignore it, humans can make more sense of it. Suggested-by: Frederic Weisbecker <fweisbec@gmail.com> Suggested-by: Ingo Molnar <mingo@elte.hu> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258415125-15019-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf top: Introduce --hide_{user,kernel}_symbolsArnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Default continues to be showing all symbols. 'K' and 'U' can be used to toggle showing kernel and user symbols. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258415125-15019-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf top: Use all the lines in the screenArnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By querying the current number of rows, if the user specifies the number of entries, use that instead. If the user uses the 'e' command to change the number of lines 0 will mean do it automatically, any other number disables the auto resizing. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258407027-384-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Don't die in perf_header_attr__new()Arnaldo Carvalho de Melo2009-11-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We really should propagate such kinds of errors so that users of these library functions decide what to do in such cases instead of exiting in random places like now. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258407027-384-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf buildid-list: New plumbing commandArnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this we can list the buildids in a perf.data file so that we can pipe them to other, distro specific tools that from the buildids can figure out separate packages (foo-debuginfo) where we can find the matching symtabs so that perf report can do its job. E.g: [acme@doppio linux-2.6-tip]$ perf buildid-list | head -5 8e08b117e5458ad3f85da16d42d0fc5cd21c5869 520c2387a587cc5acfcf881e27dba1caaeab4b1f ec8dd400904ddfcac8b1c343263a790f977159dc 7caedbca5a6d8ab39a7fe44bd28c07d3e14a3f3f 379bb828fd08859dbea73279f04abefabc95a6a3 [acme@doppio linux-2.6-tip]$ perf buildid-list -v | head -5 8e08b117e5458ad3f85da16d42d0fc5cd21c5869 /sbin/init 520c2387a587cc5acfcf881e27dba1caaeab4b1f /lib64/ld-2.10.1.so ec8dd400904ddfcac8b1c343263a790f977159dc /lib64/libc-2.10.1.so 7caedbca5a6d8ab39a7fe44bd28c07d3e14a3f3f /sbin/udevd 379bb828fd08859dbea73279f04abefabc95a6a3 /lib64/libdl-2.10.1.so [acme@doppio linux-2.6-tip]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Introduce dsos__fprintf_buildidArnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | To print the buildids in the list of dsos. Will be used by 'perf buildid-list' Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Generalize perf_header__adds_read()Arnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Renaming it to perf_header__process_sections() and passing a callback to handle each feature. The next changesets will introduce 'perf buildid-list' that will handle just the HEADER_BUILD_ID table, ignoring all the other features. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Debug.h needs to include event.h for event_tArnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf symbols: Pass the offset to perf_header__read_build_ids()Arnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf symbols: Call the symbol filter in dso__synthesize_plt_symbols()Arnaldo Carvalho de Melo2009-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to pass the symbol to the filter so that, for instance, 'perf top' can do filtering and also set the private area it manages, setting the ->map pointer, etc. I found this while running 'perf top' on a machine where hits happened on PLT symbols, where ->map wasn't being set up and segfaults thus happened. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258386491-20278-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf_event: Optimize perf_output_lock()Peter Zijlstra2009-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The purpose of perf_output_{un,}lock() is to: 1) avoid publishing incomplete data [ possible when publishing a head that is ahead of an entry that is still being written ] 2) guarantee fwd progress [ a simple refcount on pending writers doesn't need to drop to 0, making it so would end up implementing something like forced quiecent states of RCU ] To satisfy the above without undue complexity it serializes between CPUs, this means that a pending writer can only be the same cpu in a nested context, and since (under normal operation) a cpu always makes progress we're good -- if the head is only published when the bottom most writer completes. Now we don't need to disable IRQs in order to serialize between CPUs, disabling preemption ought to be sufficient, esp since we already deal with nesting due to NMIs. This avoids potentially expensive (and needless) local IRQ disable/enable ops. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1258373161.26714.254.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf stat: Do not print ratio when task-clock event is not countedLucas De Marchi2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ratio between the number of events and the time elapsed makes sense only if task-clock event is counted. Otherwise it will be simply a (confusing) # 0.000 M/sec This patch outputs the ratio only if task-clock event is counted. Some test examples of before and after: Before: [lucas@skywalker linux.trees.git]$ sudo perf stat -e branch-misses -a -- sleep 1 Performance counter stats for 'sleep 1': 1367818 branch-misses # 0.000 M/sec 1.001494325 seconds time elapsed After (without task-clock): [lucas@skywalker perf]$ sudo ./perf stat -e branch-misses -a -- sleep 1 Performance counter stats for 'sleep 1': 1135044 branch-misses 1.001370775 seconds time elapsed After (with task-clock): [lucas@skywalker perf]$ sudo ./perf stat -e branch-misses -e task-clock -a -- sleep 1 Performance counter stats for 'sleep 1': 1070111 branch-misses # 0.534 M/sec 2002.730893 task-clock-msecs # 1.999 CPUs 1.001640292 seconds time elapsed Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <20091115140507.GB21561@skywalker.lan> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf tools: Add new perf_atoll() function to parse string representing size ↵Hitoshi Mitake2009-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in bytes This patch modifies util/string.[ch] to add new function: perf_atoll() to parse string representing size in bytes. This function parses (\d+)(b|B|kb|KB|mb|MB|gb|GB) (e.g. "256MB") and returns its numeric value. (e.g. 268435456) Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1258285013-4759-1-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| *-. Merge branches 'perf/powerpc' and 'perf/bench' into perf/coreIngo Molnar2009-11-15
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: Both 'perf bench' and the pending PowerPC changes are now ready for the next merge window. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Improve sched-message.c with more comfortable outputHitoshi Mitake2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch improves sched-message.c with more comfortable output. Change points are comment style description and formatting numerical values and its units. Example: | % perf bench sched messaging | # Running sched/messaging benchmark... | # 20 sender and receiver processes per group | # 10 groups == 400 processes run | | Total time: 1.490 [sec] Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257865442-20252-4-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org>
| | | * perf bench: Improve sched-pipe.c with more comfortable outputHitoshi Mitake2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch improves sched-pipe.c with more comfortable output. Change points are comment style description and formatting numerical values and its units. Example: | % ./perf bench sched pipe | # Running sched/pipe benchmark... | # Extecuted 1000000 pipe operations between two tasks | | Total time:5.822 [sec] | | 5.822553 usecs/op | 171745 ops/sec Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257865442-20252-3-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Improve builtin-bench.c for more friendly outputHitoshi Mitake2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes output of perf bench more friendly. Current style of putput, keeping user wait and printing everything suddenly when we finish, may confuse users. So I improved it: | % perf bench sched messaging | # Running sched/messaging benchmark... <- printed right after invocation | # 20 sender and receiver processes per group | # 10 groups == 400 processes run | | Total time: 1.476 [sec] Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257865442-20252-2-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Modify command-list.txt for the entry of perf-benchHitoshi Mitake2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies command-list.txt for the entry of perf-bench. So perf will show 'bench' in command list. Example: % perf usage: perf [--version] [--help] COMMAND [ARGS] The most commonly used perf commands are: annotate Read perf.data (created by perf record) and display annotated code bench General framework for benchmark suites ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ list List all symbolic event types probe Define new dynamic tracepoints record Run a command and record its profile into perf.data report Read perf.data (created by perf record) and display the profile sched Tool to trace/measure scheduler properties (latencies) stat Run a command and gather performance counter statistics timechart Tool to visualize total system behavior during a workload top System profiling tool. trace Read perf.data (created by perf record) and display trace output See 'perf help COMMAND' for more information on a specific command. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257853855-28934-4-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add new document about perf-benchHitoshi Mitake2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds new document about perf-bench. Man page and html will be provided for user. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257853855-28934-3-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Clean up bench/bench.hIngo Molnar2009-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up initializers in bench.h: - No need to break the line for function prototypes, they are more readable in a single line. (even if checkpatch complains about it - We try to align definitions / structure fields vertically, to make it all a bit more readable. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257853855-28934-2-git-send-email-mitake@dcl.info.waseda.ac.jp>
| | | * perf bench: Modify builtin-pipe.c for processing common optionsHitoshi Mitake2009-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies builtin-pipe.c for processing common options. The first option added is "--format". Users of perf bench will be able to specify output style by --format. Usage example: % ./perf bench sched pipe # with no style specify (executing 1000000 pipe operations between two tasks) Total time:5.855 sec 5.855061 usecs/op 170792 ops/sec % ./perf bench --format=simple sched pipe # specified simple 5.988 Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257808802-9420-5-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org>
| | | * perf bench: Modify bench/bench-messaging.c to adopt unified output formattingHitoshi Mitake2009-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies bench/bench-messaging.c to adopt unified output formatting: --format option. Usage example: % ./perf bench sched messaging # with no style specify (20 sender and receiver processes per group) (10 groups == 400 processes run) Total time:1.431 sec % ./perf bench --format=simple sched messaging # specified simple 1.431 Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257808802-9420-4-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Modify builtin-bench.c for processing common optionsHitoshi Mitake2009-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies builtin-bench.c for processing common options. The first option added is "--format". Users of perf bench will be able to specify output style by --format. Usage example: % ./perf bench sched messaging # with no style specify (20 sender and receiver processes per group) (10 groups == 400 processes run) Total time:1.431 sec % ./perf bench --format=simple sched messaging # specified simple 1.431 Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257808802-9420-3-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add format constants to bench.h for unified output formattingHitoshi Mitake2009-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds some constants and extern declaration to bench.h. These are used for unified output formatting of 'perf bench'. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1257808802-9420-2-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Fix bench/sched-pipe.c to wait for child processHitoshi Mitake2009-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingo reported this small 'perf bench sched pipe' output problem: | $ ./perf bench sched pipe | (executing 1000000 pipe operations between two tasks) | | Total time:4.898 sec | $ 4.898586 usecs/op | 204140 ops/sec | | the shell prompt came back before the usecs/op and ops/sec line | was printed. Process teardown race, lack of wait() or so? This caused by lack of calling waitpid() by parent process, so I added it. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> 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> Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257737465-7546-1-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add subcommand 'bench' to the MakefileHitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies Makefile for new files related to 'bench' subcommand. The new code is active from this point on. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-8-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add new subcommand 'bench' to perf.cHitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies perf.c for invoking 'bench' subcommand. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-7-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Modify builtin.h for new prototypeHitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies builtin.h to add prototype of cmd_bench(). Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-6-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add builtin-bench.c: General framework for benchmark suitesHitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds builtin-bench.c builtin-bench.c is a general framework for benchmark suites. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-5-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add sched-pipe.c: Benchmark for pipe() system callHitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds bench/sched-pipe.c. bench/sched-pipe.c is a benchmark program to measure performance of pipe() system call. This benchmark is based on pipe-test-1m.c by Ingo Molnar: http://people.redhat.com/mingo/cfs-scheduler/tools/pipe-test-1m.c Example of use: % perf bench sched pipe (executing 1000000 pipe operations between two tasks) Total time:4.499 sec 4.499179 usecs/op 222262 ops/sec % perf bench sched pipe -s -l 1000 0.015 Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-4-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add sched-messaging.c: Benchmark for scheduler and IPC ↵Hitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mechanisms based on hackbench This patch adds bench/sched-messaging.c. This benchmark measures performance of scheduler and IPC mechanisms, and is based on hackbench by Rusty Russell. Example of usage: % perf bench sched messaging -g 20 -l 1000 -s 5.432 # in sec % perf bench sched messaging # run with default options (20 sender and receiver processes per group) (10 groups == 400 processes run) Total time:0.308 sec % perf bench sched messaging -t -g 20 # # be multi-thread, with 20 groups (20 sender and receiver threads per group) (20 groups == 800 threads run) Total time:0.582 sec ( Rusty is the original author of hackbench.c and he said the code is and was under the GPLv2 so fine to be merged. ) Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-3-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * perf bench: Add new directory and header for new subcommand 'bench'Hitoshi Mitake2009-11-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds bench/ directory and bench/bench.h. bench/ directory will contain modules for bench subcommand. bench/bench.h is for listing prototypes of module functions. Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com Cc: Jiri Kosina <jkosina@suse.cz> LKML-Reference: <1257381097-4743-2-git-send-email-mitake@dcl.info.waseda.ac.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | powerpc: perf_event: Cleanup output by adding symbolsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add some dummy symbols for the branches at 0xf00, 0xf20 and 0xf40, otherwise hits end up in trap_0e which is confusing to the user. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: perf_event: Hide iseries_check_pending_irqsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_PPC_ISERIES isn't defined we end up with iseries_check_pending_irqs and do_work at the same address. perf ends up picking iseries_check_pending_irqs which creates confusing backtraces. Hide it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: perf_event: Cleanup copy_page output by hiding setup symbolAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A lot of hits in "setup" doesn't make much sense, so hide this symbol and allow all the hits to end up in copy_4k_page. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: Export powerpc_debugfs_rootAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel modules should be able to place their debug output inside our powerpc debugfs directory. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: Disable HCALL_STATS by defaultAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The overhead of HCALL_STATS is quite high and the functionality is very rarely used. Key statistics are also missing (eg min/max). With the new hcall tracepoints much more powerful tracing can be done in a kernel module. Lets disable this by default. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: tracing: Give hypervisor call tracepoints access to argumentsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While most users of the hcall tracepoints will only want the opcode and return code, some will want all the arguments. To avoid the complexity of using varargs we pass a pointer to the register save area, which contains all the arguments. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: tracing: Add hypervisor call tracepointsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add hcall_entry and hcall_exit tracepoints. This replaces the inline assembly HCALL_STATS code and converts it to use the new tracepoints. To keep the disabled case as quick as possible, we embed a status word in the TOC so we can get at it with a single load. By doing so we keep the overhead at a minimum. Time taken for a null hcall: No tracepoint code: 135.79 cycles Disabled tracepoints: 137.95 cycles For reference, before this patch enabling HCALL_STATS resulted in a null hcall of 201.44 cycles! Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: tracing: Add powerpc tracepoints for timer entry and exitAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can monitor the effectiveness of our power management of both the kernel and hypervisor by probing the timer interrupt. For example, on this box we see 10.37s timer interrupts on an idle core: <idle>-0 [010] 3900.671297: timer_interrupt_entry: pt_regs=c0000000ce1e7b10 <idle>-0 [010] 3900.671302: timer_interrupt_exit: pt_regs=c0000000ce1e7b10 <idle>-0 [010] 3911.042963: timer_interrupt_entry: pt_regs=c0000000ce1e7b10 <idle>-0 [010] 3911.042968: timer_interrupt_exit: pt_regs=c0000000ce1e7b10 <idle>-0 [010] 3921.414630: timer_interrupt_entry: pt_regs=c0000000ce1e7b10 <idle>-0 [010] 3921.414635: timer_interrupt_exit: pt_regs=c0000000ce1e7b10 Since we have a 207MHz decrementer it will go negative and fire every 10.37s even if Linux is completely idle. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: tracing: Add powerpc tracepoints for interrupt entry and exitAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds powerpc-specific tracepoints for interrupt entry and exit. While we already have generic irq_handler_entry and irq_handler_exit tracepoints there are cases on our virtualised powerpc machines where an interrupt is presented to the OS, but subsequently handled by the hypervisor. This means no OS interrupt handler is invoked. Here is an example on a POWER6 machine with the patch below applied: <idle>-0 [006] 3243.949840744: irq_entry: pt_regs=c0000000ce31fb10 <idle>-0 [006] 3243.949850520: irq_exit: pt_regs=c0000000ce31fb10 <idle>-0 [007] 3243.950218208: irq_entry: pt_regs=c0000000ce323b10 <idle>-0 [007] 3243.950224080: irq_exit: pt_regs=c0000000ce323b10 <idle>-0 [000] 3244.021879320: irq_entry: pt_regs=c000000000a63aa0 <idle>-0 [000] 3244.021883616: irq_handler_entry: irq=87 handler=eth0 <idle>-0 [000] 3244.021887328: irq_handler_exit: irq=87 return=handled <idle>-0 [000] 3244.021897408: irq_exit: pt_regs=c000000000a63aa0 Here we see two phantom interrupts (no handler was invoked), followed by a real interrupt for eth0. Without the tracepoints in this patch we would have missed the phantom interrupts. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: perf_event: Add alignment-faults and emulation-faults software eventsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Hook up the alignment-faults and emulation-faults events for powerpc. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: Create PPC_WARN_ALIGNMENT to match PPC_WARN_EMULATEDAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf_event wants a separate event for alignment and emulation faults, so create another emulation event. This will make it easy to hook in perf_event at one spot. We pass in regs which will be required for these events. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | perf_event: Add alignment-faults and emulation-faults software eventsAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add two more software events that are common to many cpus. Alignment faults: When a load or store is not aligned properly. Emulation faults: When an instruction is emulated in software. Both cause a very significant slowdown (100x or worse), so identifying and fixing them is very important. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | powerpc: perf_event: Enable SDAR in continous sample modeAnton Blanchard2009-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In continuous sampling mode we want the SDAR to update. While we can select between dcache misses and ERAT (L1-TLB) misses, a decent default is to enable both. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-30 04:53:39 -0500