- 12 Aug, 2014 26 commits
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Namhyung Kim authored
It makes the code a bit simpler and easier to debug IMHO. I guess it can also remove similar code in perf diff, but let's keep it for a future work. :) Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1406785662-5534-7-git-send-email-namhyung@kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
Add -w/--column-widths option like perf report does so that users are able to see symbols even with some very long C++ library/functions. It can be a list separated by comma for each column. $ perf top -w 0,20,30 The value of 0 means there's no limit. Signed-off-by:
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Namhyung Kim authored
Set column width and do not change it if user gives -w/--column-widths option. It'll truncate longer symbols than the width if exists. Signed-off-by:
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Namhyung Kim authored
Save column length in the hpp format and pass it to print functions. This is a preparation for users to control column width in the output. Signed-off-by:
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Namhyung Kim authored
So that it can properly handle alignment requirements later. To do that, add percent_color_len_snprintf() fucntion to help coloring of overhead columns. Signed-off-by:
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Namhyung Kim authored
Now perf left-aligns column headers but the contents does not. It should have same alignment. This requires a change in pid sort key - it consists of two part (pid and comm). As length of comm can be vary it'd be better to change the order of them. Thanks to Jiri Olsa for pointing this out. Signed-off-by:
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Namhyung Kim authored
Thomas reported that make PYTHON=python2 is not work on some systems. I can reproduce it on my ArchLinux box too. This is because it's overridden by config/feature-checks/Makefile regardless of PYTHON setting. I guess it's a bug slipped into during the feature checking change. Actually, we don't need to check python-config in the feature-checks. We can just pass appropriate FEATURE_CHECK_*FLAGS. Reported-by:
Thomas Ilsche <thomas.ilsche@tu-dresden.de> Signed-off-by:
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Namhyung Kim authored
The perf kmem command didn't process mmap events for some unknown reason and it instead gets symbol info from a running kernel. This is problematic if perf kmem record was run on a different kernel. This patch adds the mmap event handlers and reverts the commit e727ca73 ("perf kmem: Resolve kernel symbols again"). Signed-off-by:
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Jiri Olsa authored
Showing better error message in case we fail to open counters due to the EBUSY error. If we detect oprofile daemon process running, we now display following message for EBUSY error: $ perf record ls Error: The PMU counters are busy/taken by another profiler. We found oprofile daemon running, please stop it and try again. In case oprofiled was not detected the current error message stays: $ perf record ls Error: The sys_perf_event_open() syscall returned with 16 (Device or resource busy) for event (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? Also changing PERF_FLAG_FD_CLOEXEC detection code not to display error in case of EBUSY error, as it currently does: $ perf record ls Error: perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error 16 (Device or resource busy) perf_event_open(..., 0) failed unexpectedly with error 16 (Device or resource busy) The PMU counters are busy/taken by another profiler. We found oprofile daemon running, please stop it and try again. Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: William Cohen <wcohen@redhat.com> Cc: Yann Droneaud <ydroneaud@opteya.com> Link: http://lkml.kernel.org/r/1406908014-8312-1-git-send-email-jolsa@kernel.orgSigned-off-by:
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Jiri Olsa authored
In forced flush (OE_FLUSH__HALF) we break the rules of the flush timestamp via PERF_RECORD_FINISHED_ROUND event, so we could get out of order event. Do not force error in this case plus changing the output warning to use WARN_ONCE. Signed-off-by:
David Ahern <dsahern@gmail.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jean Pihet <jean.pihet@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-8q8794a8nlmpd1u8xrqmcyd2@git.kernel.orgSigned-off-by:
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Jiri Olsa authored
Adding some prints for ordered events queue, to help debug issues. Adding debug_ordered_events debug variable to be able to enable ordered events debug messages using: $ perf --debug ordered-events=2 report ... Also using oe pointer in perf_session__queue_event instead of chained session variable dereferencing. Signed-off-by:
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Jiri Olsa authored
Adding report.queue-size config file option to setup the maximum allocation size for session's struct ordered_events object. Signed-off-by:
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Jiri Olsa authored
Adding perf_config_u64 function to be able to parse 'llong' values out of config file. Signed-off-by:
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Jiri Olsa authored
Adding ordered_events__free function to release all the struct ordered_events data. It's replacement for former perf_session_free_sample_buffers function. Signed-off-by:
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Jiri Olsa authored
Adding ordered_events__init function for struct ordered_events struct initialization. Signed-off-by:
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Jiri Olsa authored
As Namhyung pointed out we can use list_move in ordered_events_delete. Signed-off-by:
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Jiri Olsa authored
Move ordered events code into separated object ordered-events.[ch]. No functional change was intended. Signed-off-by:
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Jiri Olsa authored
Making perf_session__deliver_event global function, as it will be called from another object in following patch. Signed-off-by:
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Jiri Olsa authored
In previous patches we added a limit for ordered events queue allocation size. If we reach this size we need to flush (part of) the queue to get some free buffers. The current functionality is not affected, because the limit is hard coded to (u64) -1. The configuration code for size will come in following patches. Signed-off-by:
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Jiri Olsa authored
Add limit to the ordered events queue allocation. This way we will be able to control the size of the queue buffers. There's no limit at the moment (it's set to (u64) -1). The config code will come in following patches. Signed-off-by:
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Jiri Olsa authored
Centralizing the next_flush calculation under the ordered_events__flush function. Signed-off-by:
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Jiri Olsa authored
Adding new ordered events interface to new|delete event buffer: ordered_events__new - allocate event buffer from the cache ordered_events__delete - return event buffer to the cache Signed-off-by:
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Jiri Olsa authored
Rename 'struct ordered_events' members to fit better the ordered events style. No functional change was intended. Signed-off-by:
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Jiri Olsa authored
Following up with ordered_samples rename for ordered_samples and sample_queue structs to ordered_events and ordered_event structs respectively. Also changing flush_sample_queue function name to ordered_events_flush. No functional change was intended. Signed-off-by:
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Jiri Olsa authored
The time ordering is generic for all kinds of events, so using generic name 'ordered_events' for ordered_samples bool in perf_tool struct. No functional change was intended. Signed-off-by:
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Andi Kleen authored
Time stamps are always implicitely enabled for record currently. The old --time/-T option is a nop. Allow the user to disable timestamps by using --no-time, honouring the existing option. The defaults are unchanged. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1406789104-25863-10-git-send-email-zheng.z.yan@intel.comSigned-off-by:
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- 02 Aug, 2014 1 commit
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Christian Borntraeger authored
For lots of exits the min time (and sometimes max) is 0 or 1. Lets increase the accurancy similar to what the average field alread does. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Acked-by:
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- 31 Jul, 2014 2 commits
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Arnaldo Carvalho de Melo authored
Minchan reported that perf failed to load vmlinux if --symfs argument doesn't end with '/' character. Fix it by making sure that the '/' path separator is used when composing pathnames with a --symfs provided directory name. Reported-by:
Minchan Kim <minchan@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-8n4s6b6zvsez5ktanw006125@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
The perf_evlist__prepare_workload() method works by forking and then waiting on a fd that must be written to to allow the workload to be exec()ed. But if the tool calling it fails to, say, set up the events with which it wants to sample the workload for, it will not call perf_evlist__start_workload(), but even in this case the workload ended up running: [acme@zoo linux]$ trace /bin/echo workload ends up running, it should not... Couldn't mmap the events: Operation not permitted workload ends up running, it should not... [acme@zoo linux]$ So check if at least one byte was written before letting exec() be called. Now the expected behaviour: [acme@zoo linux]$ trace /bin/echo workload ends up running, it should not... Couldn't mmap the events: Operation not permitted [acme@zoo linux]$ Acked-by:
Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-oh1ixo8m74rf295a05gfjw8b@git.kernel.orgSigned-off-by:
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- 30 Jul, 2014 2 commits
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Mark Salter authored
I'm seeing the following build error on arm64: In file included from util/event.c:3:0: util/event.h:95:17: error: 'PERF_REGS_MAX' undeclared here (not in a function) u64 cache_regs[PERF_REGS_MAX]; ^ This patch adds a PERF_REGS_MAX definition for arm64. Signed-off-by:Mark Salter <msalter@redhat.com> Acked-by:
Jean Pihet <jean.pihet@linaro.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jean Pihet <jean.pihet@linaro.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1406325766-8085-1-git-send-email-msalter@redhat.comSigned-off-by:
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core Pull perf/core improvements and fixes from Jiri Olsa: * Fix perf usage string leftover (Jiri Olsa) * Revert "perf tools: Fix jump label always changing during tracing" (Jiri Olsa) Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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- 28 Jul, 2014 5 commits
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Jiri Olsa authored
This reverts commit deaff8b6. This commit makes CLOEXEC feature undetected for normal users, because per-cpu events are priviledged. Reported-by:
Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/20140728065844.GK6758@twins.programming.kicks-ass.netSigned-off-by:
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Jiri Olsa authored
Fixing perf usage string leftover pointed out by Namhyung. Reported-by:
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: Infrastructure changes: o More prep work to support Intel PT: (Adrian Hunter) - Polishing 'script' BTS output - 'inject' can specify --kallsym - VDSO is per machine, not a global var - Expose data addr lookup functions previously private to 'script' - Large mmap fixes in events processing o Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo) o Event ordering fixes (Jiri Olsa) o Include standard stringify macros in power pc code (Sukadev Bhattiprolu) Signed-off-by:
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Jiri Olsa authored
There's no need to check cloned event's permission once the parent was already checked. Also the code is checking 'current' process permissions, which is not owner process for cloned events, thus could end up with wrong permission check result. Reported-by:
Alexander Yarygin <yarygin@linux.vnet.ibm.com> Tested-by:
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Ingo Molnar authored
Signed-off-by:
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- 27 Jul, 2014 4 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "A bunch of fixes for perf and kprobes: - revert a commit that caused a perf group regression - silence dmesg spam - fix kprobe probing errors on ia64 and ppc64 - filter kprobe faults from userspace - lockdep fix for perf exit path - prevent perf #GP in KVM guest - correct perf event and filters" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: kprobes: Fix "Failed to find blacklist" probing errors on ia64 and ppc64 kprobes/x86: Don't try to resolve kprobe faults from userspace perf/x86/intel: Avoid spamming kernel log for BTS buffer failure perf/x86/intel: Protect LBR and extra_regs against KVM lying perf: Fix lockdep warning on process exit perf/x86/intel/uncore: Fix SNB-EP/IVT Cbox filter mappings perf/x86/intel: Use proper dTLB-load-misses event on IvyBridge perf: Revert ("perf: Always destroy groups on exit")
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Peter Anvin: "A couple of crash fixes, plus a fix that on 32 bits would cause a missing -ENOSYS for nonexistent system calls" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, cpu: Fix cache topology for early P4-SMT x86_32, entry: Store badsys error code in %eax x86, MCE: Robustify mcheck_init_device
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git://git.infradead.org/users/hch/vfsLinus Torvalds authored
Pull vfs fixes from Christoph Hellwig: "A vfsmount leak fix, and a compile warning fix" * 'vfs-for-3.16' of git://git.infradead.org/users/hch/vfs: fs: umount on symlink leaks mnt count direct-io: fix uninitialized warning in do_direct_IO()
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