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* perf tools: Makefile: Remove tool-specific cruftMichael Witten2011-02-181-72/+1Star
| | | | | | | | | | | | | | | | | | | This commit squashes several commits that remove: NO_C99_FORMAT CURLDIR and EXPATDIR NO_DEFLATE_BOUND CC_LD_DYNPATH and NO_R_TO_GCC_LINKER NO_PERL_MAKEMAKER INTERNAL_QSORT NO_EXTERNAL_GREP NO_PERL SCRIPT_PERL PERL_PATH_SQ Signed-off-by: Michael Witten <mfwitten@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Makefile: Remove platform-specific cruftMichael Witten2011-02-182-250/+8Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While it makes sense that this tool could be used on other platforms at least to parse data, there doesn't appear to be any real support for such usage. This commit squashes several commits that remove: SNPRINTF_RETURNS_BOGUS FREAD_READS_DIRECTORIES NO_D_{INO,TYPE}_IN_DIRENT NO_STRCASESTR NO_MEMMEM NO_STRTOUMAX and NO_STRTOULL NO_SETENV NO_UNSETENV NO_MKDTEMP NEEDS_LIBICONV NEEDS_SOCKET NO_MMAP NO_PTHREADS NO_PREAD NO_TRUSTABLE_FILEMODE NO_IPV6 and NO_SOCKADDR_STORAGE NO_ICONV and OLD_ICONV NO_NSEC, USE_NSEC, and USE_ST_TIMESPEC NO_ST_BLOCKS_IN_STRUCT_STAT NO_FINK and NO_DARWIN_PORTS NO_SYS_SELECT_H NO_HSTRERROR DIR_HAS_BSD_GROUP_SEMANTICS and FORCE_DIR_SET_GID NEEDS_NSL, NO_UINTMAX_T, NO_INET_{N,P}TON COMPAT_{CFLAGS,OBJS} Executable extension `X' Signed-off-by: Michael Witten <mfwitten@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Makefile: Remove vestigial git-specific cruftMichael Witten2011-02-181-61/+1Star
| | | | | | | | | | | | | | | This commit squashes several commits that remove: NO_SYMLINK_HEAD NO_SVN_TESTS NO_FAST_WORKING_DIRECTORY USE_STDEV SHA1/SSL cruft makefile rules Signed-off-by: Michael Witten <mfwitten@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* x86: Remove die_nmi()Jan Beulich2011-02-184-36/+0Star
| | | | | | | | | | | With no caller left, the function and the DIE_NMIWATCHDOG enumerator can both go away. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Don Zickus <dzickus@redhat.com> LKML-Reference: <4D5D521C0200007800032702@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'perf/core' of ↵Ingo Molnar2011-02-1810-31/+177
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core
| * perf list: Allow filtering list of eventsArnaldo Carvalho de Melo2011-02-174-23/+142
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The man page has the details, here are some examples: [root@emilia ~]# perf list *fault* *:*wait* List of pre-defined events (to be used in -e): page-faults OR faults [Software event] minor-faults [Software event] major-faults [Software event] alignment-faults [Software event] emulation-faults [Software event] radeon:radeon_fence_wait_begin [Tracepoint event] radeon:radeon_fence_wait_end [Tracepoint event] writeback:wbc_writeback_wait [Tracepoint event] writeback:wbc_balance_dirty_wait [Tracepoint event] writeback:writeback_congestion_wait [Tracepoint event] writeback:writeback_wait_iff_congested [Tracepoint event] sched:sched_wait_task [Tracepoint event] sched:sched_process_wait [Tracepoint event] sched:sched_stat_wait [Tracepoint event] sched:sched_stat_iowait [Tracepoint event] syscalls:sys_enter_epoll_wait [Tracepoint event] syscalls:sys_exit_epoll_wait [Tracepoint event] syscalls:sys_enter_epoll_pwait [Tracepoint event] syscalls:sys_exit_epoll_pwait [Tracepoint event] syscalls:sys_enter_rt_sigtimedwait [Tracepoint event] syscalls:sys_exit_rt_sigtimedwait [Tracepoint event] syscalls:sys_enter_waitid [Tracepoint event] syscalls:sys_exit_waitid [Tracepoint event] syscalls:sys_enter_wait4 [Tracepoint event] syscalls:sys_exit_wait4 [Tracepoint event] syscalls:sys_enter_waitpid [Tracepoint event] syscalls:sys_exit_waitpid [Tracepoint event] [root@emilia ~]# Suggested-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Tell the user when a perf.data file has no samplesArnaldo Carvalho de Melo2011-02-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [root@emilia ~]# perf report --stdio The perf.data file has no samples! [root@emilia ~]# The TUI shows a popup warning message with the same message. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf record: Delay setting the header writing atexit callArnaldo Carvalho de Melo2011-02-171-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While testing the --filter option I noticed that we were writing lots of unneeded stuff to the perf.data header when the filter ioctl fails, so move the atexit(atexit_header) call to after we create the counters successfully. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf hists: Print number of samples, not the period sumArnaldo Carvalho de Melo2011-02-171-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that we match the header where we state the number of events with the "Samples" column when using 'perf report -n/--show-nr-samples': [root@emilia ~]# perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.111 MB perf.data (~4860 samples) ] [root@emilia ~]# perf report --stdio --show-nr-samples # Events: 11 cycles # # Overhead Samples Command Shared Object Symbol # ........ .......... ........... .................. ............................ # 16.65% 1 sleep [kernel.kallsyms] [k] unmap_vmas 16.10% 1 perf libpthread-2.12.so [.] __pthread_cleanup_push_defer 15.79% 2 perf [kernel.kallsyms] [k] format_decode 12.88% 1 kworker/1:2 [kernel.kallsyms] [k] cache_reap 10.69% 1 swapper [kernel.kallsyms] [k] _raw_spin_lock 7.55% 1 sleep [kernel.kallsyms] [k] prepare_exec_creds 6.00% 1 perf [jbd2] [k] start_this_handle 5.29% 1 perf [kernel.kallsyms] [k] seq_read 4.75% 1 perf [kernel.kallsyms] [k] get_pid_task 4.30% 1 perf [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore # # (For a higher level overview, try: perf report --sort comm,dso) # [root@emilia ~]# Reported-by: Stephane Eranian <eranian@google.com> Acked-by: Stephane Eranian <eranian@google.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf: make perf stat print user provided full event namesStephane Eranian2011-02-173-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the way perf stat prints event names at the end of a run. Until now, it was trying to reconstruct the event name from its encoding. The problem is that it would only print generic events without their modifiers (u, k, pp). This patch saves the event name as passed by the user in the evsel struct and uses it to print the final event name. This would also work in case perf is linked with a library (such as libpfm4) which provides full PMU event tables. $ perf stat -e cycles:u,cycles:k date Wed Feb 16 14:58:52 CET 2011 Performance counter stats for 'date': 568600 cycles:u 2779715 cycles:k 0.001908182 seconds time elapsed Cc: Arun Sharma <arun@sharma-home.net> Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@gmail.com> LPU-Reference: <4d5bdc64.98a1df0a.7aa3.06c2@mx.google.com> Signed-off-by: Stephane Eranian <eranian@google.com> [ committer note: Fixed a merge problem with 023695d "Add cgroup support" ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf python: Add cgroup.c to setup.py to get it building againArnaldo Carvalho de Melo2011-02-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 023695d cset added a new file, util/cgroup.c, that is referenced from util/evsel.c, so it needs to be present in util/setup.py so that the python shared object binding works, fixing this: [root@emilia linux]# export PYTHONPATH=~acme/git/build/perf/python/ [root@emilia linux]# ./tools/perf/python/twatch.py Traceback (most recent call last): File "./tools/perf/python/twatch.py", line 16, in <module> import perf ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: close_cgroup Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Revert "tracing: Add unstable sched clock note to the warning"Ingo Molnar2011-02-181-6/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 5e38ca8f3ea423442eaafe1b7e206084aa38120a. Breaks the build of several !CONFIG_HAVE_UNSTABLE_SCHED_CLOCK architectures. Cc: Jiri Olsa <jolsa@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Message-ID: <20110217171823.GB17058@elte.hu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'perf/core' of ↵Ingo Molnar2011-02-1710-20/+85
|\| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core
| * perf probe: Show filename which contains target functionMasami Hiramatsu2011-02-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Show filename which contains a target function with the function name on "--lines" mode, because perf-probe just shows the first function even if there are many same-name functions. Originally adopted by Franck Bui-Huu's patch which shows file name instead of function name. I've just modified it to show both of function name and file name, because of completeness of output. E.g.) $ perf probe -L t_show <t_show@/home/mhiramat/ksrc/linux-2.6-tip/kernel/trace/ftrace.c:0> 0 static int t_show(struct seq_file *m, void *v) 1 { 2 struct ftrace_iterator *iter = m->private; ... $ perf probe -L t_show@trace/trace.c <t_show@/home/mhiramat/ksrc/linux-2.6-tip/kernel/trace/trace.c:0> 0 static int t_show(struct seq_file *m, void *v) 1 { struct tracer *t = v; ... Original-patch-by: Franck Bui-Huu <fbuihuu@gmail.com> Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110210090816.1809.43426.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf probe: Support function@filename syntax for --lineMasami Hiramatsu2011-02-162-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since "perf probe --add" supports function@filename syntax, --line option should also support it. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-kernel@vger.kernel.org LKML-Reference: <20110210090810.1809.26913.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Update Makefile with some helpJesse Brandeburg2011-02-162-9/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The perf makefile is nicely complete except for a) an uninstall option b) a 'make help' description This patch implements b) it also comments out other non-working makefile targets Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate browser: Use the percent color for the whole lineArnaldo Carvalho de Melo2011-02-161-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Not just for the percentage number, to see the hot lines more easily. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate: Check if offset is less than symbol sizeArnaldo Carvalho de Melo2011-02-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just like done on symbol__inc_addr_samples to catch misparsed offsets from objdump. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf ui: Serialize screen updatesArnaldo Carvalho de Melo2011-02-165-1/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ui operations so far were used by just one thread, but 'perf top --tui' now has two threads updating the screen, so we need to use a mutex to avoid garbling the screen. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'tip/perf/core' of ↵Ingo Molnar2011-02-179-197/+74Star
|\ \ | |/ |/| | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
| * tracing: Deprecate tracing_enabled for tracing_onSteven Rostedt2011-02-082-19/+23
| | | | | | | | | | | | | | | | | | | | | | tracing_enabled should not be used, it is heavy weight and does not do much in helping lower the overhead. tracing_on should be used instead. Warn users to use tracing_on when tracing_enabled is used as it will soon be removed from the tracing directory. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing: Remove obsolete sched_switch tracerSteven Rostedt2011-02-082-158/+0Star
| | | | | | | | | | | | | | The trace events sched_switch and sched_wakeup do the same thing as the stand alone sched_switch tracer does. It is no longer needed. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing: Compile time initialization for event flags valueLai Jiangshan2011-02-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | Compile time initialization is better than runtime initialization. Remove many early_initcall()s and many trace_init_flags_##name()s. Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <4D3FDFFC.6030304@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * trivial: Fix Steven's Copyright typosUwe Kleine-König2011-02-082-2/+2
| | | | | | | | | | | | | | | | | | OK, the copyright allows you to write a copy, still I think the lawyers prefer the correct spelling. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> LKML-Reference: <1295899921-11333-1-git-send-email-u.kleine-koenig@pengutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing: Add unstable sched clock note to the warningJiri Olsa2011-02-081-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The warning "Delta way too big" warning might appear on a system with unstable shed clock right after the system is resumed and tracing was enabled during the suspend. Since it's not realy bug, and the unstable sched clock is working fast and reliable otherwise, Steven suggested to keep using the sched clock in any case and just to make note in the warning itself. Signed-off-by: Jiri Olsa <jolsa@redhat.com> LKML-Reference: <1296649698-6003-1-git-send-email-jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing/syscalls: Early terminate search for sys_ni_syscallIan Munsie2011-02-081-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Many system calls are unimplemented and mapped to sys_ni_syscall, but at boot ftrace would still search through every syscall metadata entry for a match which wouldn't be there. This patch adds causes the search to terminate early if the system call is not mapped. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <1296703645-18718-7-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing/syscalls: Allow arch specific syscall symbol matchingIan Munsie2011-02-082-7/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures have unusual symbol names and the generic code to match the symbol name with the function name for the syscall metadata will fail. For example, symbols on PPC64 start with a period and the generic code will fail to match them. This patch moves the match logic out into a separate function which an arch can override by defining ARCH_HAS_SYSCALL_MATCH_SYM_NAME in asm/ftrace.h and implementing arch_syscall_match_sym_name. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <1296703645-18718-5-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing/syscalls: Make arch_syscall_addr weakIan Munsie2011-02-082-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures use non-trivial system call tables and will not work with the generic arch_syscall_addr code. For example, PowerPC64 uses a table of twin long longs. This patch makes the generic arch_syscall_addr weak to allow architectures with non-trivial system call tables to override it. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <1296703645-18718-4-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing/syscalls: Convert redundant syscall_nr checks into WARN_ONIan Munsie2011-02-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | With the ftrace events now checking if the syscall_nr is valid upon initialisation it should no longer be possible to register or unregister a syscall event without a valid syscall_nr since they should not be created. This adds a WARN_ON_ONCE in the register and unregister functions to locate potential regressions in the future. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <1296703645-18718-3-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * tracing/syscalls: Don't add events for unmapped syscallsIan Munsie2011-02-082-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FTRACE_SYSCALLS would create events for each and every system call, even if it had failed to map the system call's name with it's number. This resulted in a number of events being created that would not behave as expected. This could happen, for example, on architectures who's symbol names are unusual and will not match the system call name. It could also happen with system calls which were mapped to sys_ni_syscall. This patch changes the default system call number in the metadata to -1. If the system call name from the metadata is not successfully mapped to a system call number during boot, than the event initialisation routine will now return an error, preventing the event from being created. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <1296703645-18718-2-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | perf: Optimize hrtimer eventsPeter Zijlstra2011-02-161-3/+32
| | | | | | | | | | | | | | | | | | | | | | | | There is no need to re-initialize the hrtimer every time we start it, so don't do that (shaves a few cycles). Also, since we know hrtimers run at a fixed rate (nanoseconds) we can pre-compute the desired frequency at which they tick. This avoids us having to go through the whole adaptive frequency feedback logic (shaves another few cycles). Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1297448589.5226.47.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf: Optimize throttling codePeter Zijlstra2011-02-163-20/+29
| | | | | | | | | | | | | | | | | | | | By pre-computing the maximum number of samples per tick we can avoid a multiplication and a conditional since MAX_INTERRUPTS > max_samples_per_tick. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf, x86: Add support for AMD family 15h core countersRobert Richter2011-02-163-3/+186
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for AMD family 15h core counters. There are major changes compared to family 10h. First, there is a new perfctr msr range for up to 6 counters. Northbridge counters are separate now. This patch only adds support for core counters. Second, certain events may only be scheduled on certain counters. For this we need to extend the event scheduling and constraints. We use cpu feature flags to calculate family 15h msr address offsets. This way we later can implement a faster ALTERNATIVE() version for this. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110215135210.GB5874@erda.amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf, x86: Store perfctr msr addresses in config_base/event_baseRobert Richter2011-02-163-19/+14Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Instead of storing the base addresses we can store the counter's msr addresses directly in config_base/event_base of struct hw_perf_event. This avoids recalculating the address with each msr access. The addresses are configured one time. We also need this change to later modify the address calculation. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1296664860-10886-5-git-send-email-robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf, x86: Add new AMD family 15h msrs to perfctr reservation codeRobert Richter2011-02-161-0/+4
| | | | | | | | | | | | | | | | | | | | This patch allows the reservation of perfctrs with new msr addresses introduced for AMD cpu family 15h (0xc0010200/0xc0010201, etc). Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1296664860-10886-4-git-send-email-robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf, x86: Calculate perfctr msr addresses in helper functionsRobert Richter2011-02-162-15/+25
| | | | | | | | | | | | | | | | | | | | | | This patch adds helper functions to calculate perfctr msr addresses. We need this to later add support for AMD family 15h cpus. For this we have to change the algorithms to generate the perfctr's msr addresses. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1296664860-10886-3-git-send-email-robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf, x86: Use helper function in x86_pmu_enable_all()Robert Richter2011-02-161-11/+8Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Use helper function in x86_pmu_enable_all() to minimize access to x86_pmu.eventsel in the fast path. The counter's msr address is now calculated using struct hw_perf_event. Later we add code that calculates the msr addresses with a table lookup which shouldn't be done in the fast path. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1296664860-10886-2-git-send-email-robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf tool: Add cgroup supportStephane Eranian2011-02-169-10/+276
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the ability to filter monitoring based on container groups (cgroups) for both perf stat and perf record. It is possible to monitor multiple cgroup in parallel. There is one cgroup per event. The cgroups to monitor are passed via a new -G option followed by a comma separated list of cgroup names. The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool finds the corresponding directory in the cgroup filesystem and opens it. It then passes that file descriptor to the kernel. Example: $ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1 Performance counter stats for 'sleep 1': 2,368,667,414 cycles test1 2,369,661,459 cycles <not counted> cycles test2 1.001856890 seconds time elapsed Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | perf: Add cgroup supportStephane Eranian2011-02-166-38/+671
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This kernel patch adds the ability to filter monitoring based on container groups (cgroups). This is for use in per-cpu mode only. The cgroup to monitor is passed as a file descriptor in the pid argument to the syscall. The file descriptor must be opened to the cgroup name in the cgroup filesystem. For instance, if the cgroup name is foo and cgroupfs is mounted in /cgroup, then the file descriptor is opened to /cgroup/foo. Cgroup mode is activated by passing PERF_FLAG_PID_CGROUP in the flags argument to the syscall. For instance to measure in cgroup foo on CPU1 assuming cgroupfs is mounted under /cgroup: struct perf_event_attr attr; int cgroup_fd, fd; cgroup_fd = open("/cgroup/foo", O_RDONLY); fd = perf_event_open(&attr, cgroup_fd, 1, -1, PERF_FLAG_PID_CGROUP); close(cgroup_fd); Signed-off-by: Stephane Eranian <eranian@google.com> [ added perf_cgroup_{exit,attach} ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4d590250.114ddf0a.689e.4482@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | cgroup: Fix cgroup_subsys::exit callbackPeter Zijlstra2011-02-163-18/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | Make the ::exit method act like ::attach, it is after all very nearly the same thing. The bug had no effect on correctness - fixing it is an optimization for the scheduler. Also, later perf-cgroups patches rely on it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Paul Menage <menage@google.com> LKML-Reference: <1297160655.13327.92.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'perf/urgent' into perf/coreIngo Molnar2011-02-16376-2095/+3252
|\ \ | | | | | | | | | | | | | | | Merge reason: we need to queue up dependent patch Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | perf: Fix throttle logicPeter Zijlstra2011-02-161-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was possible to call pmu::start() on an already running event. In particular this lead so some wreckage as the hrtimer events would re-initialize active timers. This was due to throttled events being activated again by scheduling. Scheduling in a context would add and force start events, resulting in running events with a possible throttle status. The next tick to hit that task will then try to unthrottle the event and call ->start() on an already running event. Reported-by: Jeff Moyer <jmoyer@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | perf, x86: P4 PMU: Fix spurious NMI messagesCyrill Gorcunov2011-02-162-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several people have reported spurious unknown NMI messages on some P4 CPUs. This patch fixes it by checking for an overflow (negative counter values) directly, instead of relying on the P4_CCCR_OVF bit. Reported-by: George Spelvin <linux@horizon.com> Reported-by: Meelis Roos <mroos@linux.ee> Reported-by: Don Zickus <dzickus@redhat.com> Reported-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <AANLkTinfuTfCck_FfaOHrDqQZZehtRzkBum4SpFoO=KJ@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | Linux 2.6.38-rc5Linus Torvalds2011-02-161-1/+1
| | |
| * | Merge branch 'for-linus' of ↵Linus Torvalds2011-02-1618-69/+165
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: set flow handler for secondary interrupt controller of 5249 m68knommu: remove use of IRQ_FLG_LOCK from 68360 platform support m68knommu: fix dereference of port.tty m68knommu: add missing linker __modver section m68knommu: fix mis-named variable int set_irq_chip loop m68knommu: add optimize memmove() function m68k: remove arch specific non-optimized memcmp() m68knommu: fix use of un-defined _TIF_WORK_MASK m68knommu: Rename m548x_wdt.c to m54xx_wdt.c m68knommu: fix m548x_wdt.c compilation after headers renaming m68knommu: Remove dependencies on nonexistent M68KNOMMU
| | * | m68knommu: set flow handler for secondary interrupt controller of 5249Greg Ungerer2011-02-161-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The secondary interrupt controller of the ColdFire 5249 code is not setting the edge triggered flow handler. Set it. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| | * | m68knommu: remove use of IRQ_FLG_LOCK from 68360 platform supportGreg Ungerer2011-02-162-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The m68knommu arch does not define or use IRQ_FLG_LOCK in its irq subsystem. Remove obsolete use of it. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| | * | m68knommu: fix dereference of port.ttyGreg Ungerer2011-02-161-15/+14Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The struct_tty associated with a port is now a direct pointer from within the local private driver info struct. So fix all uses of it. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| | * | m68knommu: add missing linker __modver sectionGreg Ungerer2011-02-161-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing linker section __modver to fix: LD vmlinux /usr/local/bin/../m68k-uclinux/bin/ld.real: error: no memory region specified for loadable section `__modver' Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| | * | m68knommu: fix mis-named variable int set_irq_chip loopGreg Ungerer2011-02-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Compiling for 68360 targets gives: CC arch/m68knommu/platform/68360/ints.o arch/m68knommu/platform/68360/ints.c: In function ‘init_IRQ’: arch/m68knommu/platform/68360/ints.c:135:16: error: ‘irq’ undeclared (first use in this function) arch/m68knommu/platform/68360/ints.c:135:16: note: each undeclared identifier is reported only once for each function it appears in Fix variable name used. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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