- 24 Aug, 2014 4 commits
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Jiri Olsa authored
Adding support to add field(s) to default field order via using the '+' prefix, like for report: $ perf report Samples: 10 of event 'cycles', Event count (approx.): 4463799 Overhead Command Shared Object Symbol 32.40% ls [kernel.kallsyms] [k] filemap_fault 28.19% ls [kernel.kallsyms] [k] get_page_from_freelist 23.38% ls [kernel.kallsyms] [k] enqueue_entity 15.04% ls [kernel.kallsyms] [k] mmap_region $ perf report -F +period,sample Samples: 10 of event 'cycles', Event count (approx.): 4463799 Overhead Period Samples Command Shared Object Symbol 32.40% 1446493 1 ls [kernel.kallsyms] [k] filemap_fault 28.19% 1258486 1 ls [kernel.kallsyms] [k] get_page_from_freelist 23.38% 1043754 1 ls [kernel.kallsyms] [k] enqueue_entity 15.04% 671160 1 ls [kernel.kallsyms] [k] mmap_region Works in general for commands using --field option. Signed-off-by:Jiri Olsa <jolsa@kernel.org> 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/r/1408715919-25990-2-git-send-email-jolsa@kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Jiri Olsa authored
Signed-off-by:
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Jiri Olsa authored
Adding new perf event state to indicate that the monitored task has exited. In this case the event stays alive until the owner task exits or close the event fd while providing the last data through the read syscall and ring buffer. Instead it needs to propagate the error info (monitored task has died) via poll and read syscalls by returning POLLHUP and 0 respectively. Signed-off-by:
Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140811120102.GY9918@twins.programming.kicks-ass.net Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> 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-t5y3w8jjx6tfo5w8y6oajsjq@git.kernel.orgSigned-off-by:
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Jiri Olsa authored
Currently perf_poll returns POLL_HUP in case of error, which is wrong, because poll syscall expects POLLHUP. The POLL_HUP is meant to be used for SIGIO state. Signed-off-by:
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- 22 Aug, 2014 6 commits
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Don Zickus authored
As we run "perf c2c" on more applications, we noticed we're missing significant samples from a common customer's application. Looking at the /proc/<pid>/maps file for the app, we see "rwxs" and "rwxp" permissions on many of the shared memory & heap regions, and on all the thread stacks. Because those regions have the "x" bit set, perf marks them with a MAP_FUNCTION type. Hence ip_resolve_data() never finds load or store events coming from them. We fixed this by re-calling thread__find_addr_location with MAP__FUNCTION in the case where map is NULL as a last ditch effort to map the sample before giving up and dropping it. Reported-by:
Joe Mario <jmario@redhat.com> Tested-by:
Don Zickus <dzickus@redhat.com> Acked-by:
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Namhyung Kim authored
The hist_browser__show_callchain() and friends don't need to be that complex. They're splitted in 3 pieces - one for traversing top-level tree, other one for special casing first chains in the top-level entries, and last one for recursive traversing inner trees. It led to code duplication and unnecessary complexity IMHO. Simplify the function and consolidate the logic into a single function - it can recursively call itself. A little difference in printing callchains in top-level tree can be handled with a small change. It should have no functional change. Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Acked-by:
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Adrian Hunter authored
Add a function to determine if an address is in the kernel. This is based on the kernel function kernel_ip(). Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.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/1408129739-17368-5-git-send-email-adrian.hunter@intel.comSigned-off-by:
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Adrian Hunter authored
Rename machine__get_kernel_start_addr() to machine__get_running_kernel_start() so that a new function, with a similar name to the original name, can be added that gets the kernel start address from the kernel map. Signed-off-by:
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Adrian Hunter authored
In order to defer some output via the scripting API, there needs to be a callback after session processing but before the session is deleted. Signed-off-by:
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Adrian Hunter authored
Add a test that checks that sched_switch events and tracking events can be recorded for a workload using the evsel->system_wide and evsel->tracking flags (respectively) with other events sometimes enabled or disabled. Signed-off-by:
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- 20 Aug, 2014 5 commits
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Namhyung Kim authored
Factor out duplicate callchain printing code into the hist_browser__ show_callchain_entry(). Signed-off-by:
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Namhyung Kim authored
When perf report runs on TUI, 'P' key dumps current screen to a file but it incorrectly displayed children overhead (as same of self overhead). This was because it fetched the value from self stats. Signed-off-by:
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Namhyung Kim authored
It seems that the 'remaining' variable is not used by any real code. Signed-off-by:
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Sukadev Bhattiprolu authored
Looks like util/debug.h was indirectly included before and is no longer included now. pr_debug is left undefined and the build of perf tool fails on Powerpc. Explicitly include util/debug.h. Signed-off-by:
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by:
Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <michaele@au1.ibm.com> Link: http://lkml.kernel.org/r/20140807072700.GA17623@us.ibm.comSigned-off-by:
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Don Zickus authored
We are seeing a lot of the following with regards to SYSV memory Failed to open /SYSV0000279c, continuing without symbols We don't believe this memory will have DSO info, so treat it like the heap and stack for now and skip it to prevent the warning. Signed-off-by:
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- 18 Aug, 2014 1 commit
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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: User visible changes: * Warn user to rebuild target with debuginfo in 'perf probe' (Masami Hiramatsu) * Don't truncate Intel style addresses in 'annotate'. (Alex Converse) Infrastructure changes: * Annotate PMU related list_head members with type info. (Cody P Schafer) * Add the triplet used for arm64 by Android (Elliott Hughes) * Replace thread unsafe strerror() with strerror_r() accross the whole tools/perf/ tree (Masami Hiramatsu) Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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- 15 Aug, 2014 18 commits
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by:
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20140814022255.3545.81549.stgit@kbuild-fedora.novalocalSigned-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error message for thead-safety. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error message for thread-safety. Signed-off-by:
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Masami Hiramatsu authored
Replaces all strerror with strerror_r in util for making the perf lib thread-safe. Signed-off-by:
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Masami Hiramatsu authored
To make error messages thread-safe, this replaces strerror with strerror_r for warnings, and just shows the return value instead of using strerror for debug messages. Signed-off-by:
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Masami Hiramatsu authored
Use strerror_r instead of strerror in error messages for thread-safety. This also introduce STRERR_BUFSIZE macro for the default size of message buffer for strerror_r. Signed-off-by:
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Masami Hiramatsu authored
Since the strlist__add doesn't involves any IO, the failure reason must be ENOMEM or EINVAL, moreover this is just a debug message, we don't need to show the error string. And also, if get_probe_trace_command_rawlist() returns NULL, it doesn't mean the rawlist is empty, there is an error. So caller must use -ENOMEM for the error. Signed-off-by:
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Namhyung Kim authored
Current perf report -g/--call-graph option parser requires for option argument having following order: type,min_percent[,print_limit],order,key But sometimes it's annoying to type all even if one just wants to change the "order" or "key" setting. This patch fixes it to remove the ordering restriction so that one can use just "-g caller", for instance. The only remaining restriction is that the "print_limit" always comes after the "min_percent". Signed-off-by:
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Cody P Schafer authored
So that we can more readily understand in which list heads structs are stored into. Signed-off-by:
Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Cody P Schafer <dev@codyps.com> Cc: Haren Myneni <hbabu@us.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <michaele@au1.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1408087583-32239-6-git-send-email-sukadev@linux.vnet.ibm.comSigned-off-by:
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Elliott Hughes authored
Adds the triplet used for arm64 by Android. Others will want to add their own later. Signed-off-by:
Elliott Hughes <enh@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20140814193920.A7D2D20572@enh.mtv.corp.google.comSigned-off-by:
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Alex Converse authored
Instructions like "mov r9,QWORD PTR [rdx+0x8]" were being truncated to "mov r9,QWORD" by code that assuemd operands cannot have spaces. Signed-off-by:
Alex Converse <aconverse@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> 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/r/1408050180-14088-1-git-send-email-aconverse@google.comSigned-off-by:
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Masami Hiramatsu authored
Warn user to rebuild target with debuginfo when the perf probe fails to find debug information in the target binary. Without this, perf probe just reports the failure, but it's no hint for users. This gives more hint for users. Without this: $ strip perf $ ./perf probe -x perf -L argv_split Failed to open debuginfo file. Error: Failed to show lines. With this: $ strip perf $ ./perf probe -x perf -L argv_split The /home/fedora/ksrc/linux-3/tools/perf/perf file has no debug information. Rebuild with -g, or install an appropriate debuginfo package. Error: Failed to show lines. The "rebuild with ..." part changes to "rebuild with CONFIG_DEBUG_INFO" if the target is the kernel or a kernel module. Suggested-by:Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by:
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- 14 Aug, 2014 1 commit
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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/probe fixes and improvements from Arnaldo Carvalho de Melo: User visible changes: * Do not show +/- callchain expansion when there are no childs (top/report) (Namhyung Kim) * Fix -z and add respective 'z' hotkey to zero samples before refresh in 'perf top' (Namhyung Kim) * Capability probing fixes, improving the detection of kernel features for non-priviledged users (Adrian Hunter) * Add beautifier for mremap flags param in 'trace' (Alex Snast) * Fix --list and --del options to show events when just uprobes is enabled (Masami Hiramatsu) * perf script: Allow callchains if any event samples them * Don't look for kernel idle symbols in all DSOs in 'perf top' (Arnaldo Carvalho de Melo) * Add cpu_startup_entry to the list of kernel idle symbols (Arnaldo Carvalho de Melo) * 'perf top' terminal output fixes (Jiri Olsa) * Fix stdin handling for 'perf kvm stat live' (Jiri Olsa) * Fix missing label symbols (Adrian Hunter) * Don't demangle C++ parameters and such by default, only in --verbose mode (Namhyung Kim) * Set proper sort__mode for the branch option (Naohiro Aota) * Check recorded kernel version when finding vmlinux (Namhyung Kim) Infrastructure changes: * More prep work for intel PT (Adrian Hunter) * Fix possible memory leaks (Namhyung Kim) * Fix a memory leak in vmlinux_path__init() (Namhyung Kim) Signed-off-by:
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- 13 Aug, 2014 5 commits
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Adrian Hunter authored
Add a function to enable a specific event within a specific perf event buffer. Signed-off-by:
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Adrian Hunter authored
The flags will be used to export branch type and transaction status. insn_len is preparation for pairing calls and returns because the return address equals the call address plus the instruction length (insn_len). Signed-off-by:
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Adrian Hunter authored
Add machine__thread_exec_comm() to return the comm that matches the last exec, if the comm_exec flag is present, or the last comm otherwise. Signed-off-by:
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Adrian Hunter authored
For grouping together all the data from a single execution, which is needed for pairing calls and returns e.g. any outstanding calls when a process exec's will never return. Signed-off-by:
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Adrian Hunter authored
The Python script API repeatedly uses the same lines of code to get and call objects. Make that into helper functions instead. A side-effect is that some reference counting bugs disappear because the new call_object() function always decrements the reference count of 'retval'. Signed-off-by:
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