- 18 9月, 2014 6 次提交
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由 Avi Kivity 提交于
Some Linux symbols (for example __vt_event_wait) are interpreted by the demangler as C++ mangled names, which of course they aren't. Disable kernel symbol demangling by default to avoid this, and allow enabling it with a new option --demangle-kernel for those who wish it. Reported-by: NJiri Olsa <jolsa@redhat.com> Signed-off-by: NAvi Kivity <avi@cloudius-systems.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1410581705-26968-1-git-send-email-avi@cloudius-systems.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Add a function to scan a sysfs file within the pmu device directory. This will be used to read capability values from the PMU 'caps' subdirectory. Signed-off-by: NAdrian 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/1406786474-9306-8-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
This allows default config terms to be provided for a PMU. So, for example, when the Intel PT PMU is added, it will be possible to specify: intel_pt// which will be the same as: intel_pt/tsc=1,noretcomp=0/ meaning that the trace should contain TSC timestamps and perform 'return compression'. An important consideration of this patch is that it must be possible to overwrite the default values. That has meant changing the logic so that a zero value can replace a non-zero value. Signed-off-by: NAdrian 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/1406786474-9306-7-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
This enables a PMU event to be specified in the form: pmu// which is effectively the same as: pmu/config=0/ This patch is a precursor to defining default config for a PMU. Further explanation extracted from lkml thread: Imagine that the 'tsc' term did not exist. Intel PT trace data would not contain TSC packets, and the decoder would not know how to decode them. Then imagine that a new version of the hardware adds 'tsc'. It is such a useful feature that we want it by default, but older versions of the tools don't know how to decode it, so the kernel cannot turn it on by default. It is similar to why the kernel does not select perf_event_attr.mmap2 by default. The kernel doesn't know whether the tool supports it. Signed-off-by: NAdrian 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/1408129739-17368-6-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Alexander Yarygin 提交于
The 'perf kvm stat report' command uses the kvm->pid_str field to keep the value of the --pid option. Let's use kvm->opts.target.pid instead. Signed-off-by: NAlexander Yarygin <yarygin@linux.vnet.ibm.com> Acked-by: NDavid Ahern <dsahern@gmail.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1409579095-12963-2-git-send-email-yarygin@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Adding support to add field(s) to default sort order via using the '+' prefix, like for report: $ perf report Samples: 2K of event 'cycles', Event count (approx.): 882172583 Overhead Command Shared Object Symbol 7.39% swapper [kernel.kallsyms] [k] intel_idle 1.97% firefox libpthread-2.17.so [.] pthread_mutex_lock 1.39% firefox [snd_hda_intel] [k] azx_get_position 1.11% firefox libpthread-2.17.so [.] pthread_mutex_unlock $ perf report -s +cpu Samples: 2K of event 'cycles', Event count (approx.): 882172583 Overhead Command Shared Object Symbol CPU 2.89% swapper [kernel.kallsyms] [k] intel_idle 000 2.61% swapper [kernel.kallsyms] [k] intel_idle 002 1.20% swapper [kernel.kallsyms] [k] intel_idle 001 0.82% firefox libpthread-2.17.so [.] pthread_mutex_lock 002 Works in general for commands using --sort option. v2 with changes suggested: - Use dynamic memory instead static buffer - Fix error message typo Signed-off-by: NJiri Olsa <jolsa@kernel.org> Acked-by: NNamhyung Kim <namhyung@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: Jiri Olsa <jolsa@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/r/20140823125948.GA1193@krava.brq.redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 24 8月, 2014 1 次提交
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由 Jiri Olsa 提交于
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: NJiri 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: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 23 8月, 2014 4 次提交
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由 Don Zickus 提交于
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: NJoe Mario <jmario@redhat.com> Tested-by: NJoe Mario <jmario@redhat.com> Signed-off-by: NDon Zickus <dzickus@redhat.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1408591511-57884-1-git-send-email-dzickus@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Add a function to determine if an address is in the kernel. This is based on the kernel function kernel_ip(). Signed-off-by: NAdrian 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: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1408129739-17368-4-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1408129739-17368-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 20 8月, 2014 1 次提交
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由 Don Zickus 提交于
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: NDon Zickus <dzickus@redhat.com> Signed-off-by: NJoe Mario <jmario@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1408501874-244377-1-git-send-email-dzickus@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 15 8月, 2014 8 次提交
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由 Masami Hiramatsu 提交于
Replaces all strerror with strerror_r in util for making the perf lib thread-safe. Signed-off-by: NMasami 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/20140814022236.3545.3367.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
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: NMasami 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/20140814022234.3545.22199.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
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: NMasami 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/20140814022232.3545.14026.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
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: NMasami 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/20140814022230.3545.99254.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
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: NNamhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Arun Sharma <asharma@fb.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> 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> Cc: Rodrigo Campos <rodrigo@sdfg.com.ar> Link: http://lkml.kernel.org/r/1407996100-6359-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Cody P Schafer 提交于
So that we can more readily understand in which list heads structs are stored into. Signed-off-by: NCody 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: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Alex Converse 提交于
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: NAlex 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: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
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: NArnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20140815014432.29869.57941.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 14 8月, 2014 19 次提交
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由 Adrian Hunter 提交于
Add a function to enable a specific event within a specific perf event buffer. Signed-off-by: NAdrian 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/1406786474-9306-14-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1406786474-9306-22-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1406786474-9306-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1406786474-9306-2-git-send-email-adrian.hunter@intel.com [ Remove testing if comm->exec is false before setting it to true ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
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: NAdrian 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/1406786474-9306-19-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Add a function to peek at other events in the event stream. Signed-off-by: NAdrian 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/1406786474-9306-15-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Add a function to change which event is used to track mmap, comm and task events. This is needed with Instruction Tracing because the Instruction Tracing event must come first but cannot be used for tracking because it will be disabled under some circumstances. Signed-off-by: NAdrian 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/1406786474-9306-10-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Add an option to cause a selected event to be opened always without a pid when configured by perf_evsel__config(). This is needed when using the sched_switch tracepoint to follow object code execution. sched_switch occurs before the task switch and so it cannot record it in a context limited to that task. Note that also means that sched_switch is useless when capturing data per-thread, as is the 'context-switches' software event for the same reason. Signed-off-by: NAdrian 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/1406786474-9306-9-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Label symbols are missing because elf_sec__is_a() fails to find the section because the section strings do not match the section headers because the sections headers are from the 'runtime' object and the sections strings are from the 'symbol source' object. Fix by getting the section strings from the 'runtime' object so that they match the section headers. Signed-off-by: NAdrian 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/1406786474-9306-4-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
Some C++ symbols have very long name and they make column length longer. Most of them are about parameters including templates and we can ignore such info most of time IMHO. This patch passes DMGL_NO_OPTS by default when calling bfd_demangle(). One can still see full symbols with -v/--verbose option. before: JS_CallFunctionValue(JSContext*, JSObject*, JS::Value, unsigned int, JS::Value*, JS::Value*) after: JS_CallFunctionValue Signed-off-by: NNamhyung 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/1406785662-5534-9-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
The current -z option does almost nothing. It doesn't zero the existing samples so that we can see profiles of exited process after last refresh. It seems it only affects annotation. This patch clears existing entries before processing if -z option is given. For this original decaying logic also moved before processing. Reported-by: NStephane Eranian <eranian@google.com> Tested-by: NStephane Eranian <eranian@google.com> Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> 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> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1407831366-28892-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
Currently vmlinux_path__init() only tries to find vmlinux file from current directory, /boot and some canonical directories with version number of the running kernel. This can be a problem when reporting old data recorded on a kernel version not running currently. We can use --symfs option for this but it's annoying for user to do it always. As we already have the info in the perf.data file, it can be changed to use it for the search automatically. Before: $ perf report ... # Samples: 4K of event 'cpu-clock' # Event count (approx.): 1067250000 # # Overhead Command Shared Object Symbol # ........ .......... ................. .............................. 71.87% swapper [kernel.kallsyms] [k] recover_probed_instruction After: # Overhead Command Shared Object Symbol # ........ .......... ................. .................... 71.87% swapper [kernel.kallsyms] [k] native_safe_halt This requires to change signature of symbol__init() to receive struct perf_session_env *. Reported-by: NMinchan Kim <minchan@kernel.org> Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1407825645-24586-14-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
When uname() failed, it should free vmlinux_path. Acked-by: NJiri Olsa <jolsa@kernel.org> Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Minchan Kim <minchan@kernel.org> 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/1407825645-24586-3-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
When doing a system-wide trace with Intel PT, the jump label set up as a result of probing CLOEXEC gets reset while the trace is running. That causes an Intel PT decoding error because the object code (obtained from /proc/kcore) does not match the running code at that point. While we can't expect there never to be jump label changes, we can avoid cases that the perf tool itself creates. The problem is avoided by first trying a cpu-wide event (pid = -1) for probing the PERF_FLAG_FD_CLOEXEC flag and falling back to an event for the current process (pid = 0). Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> 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/1407855871-15024-5-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Fall back to probing with the current pid if cpu-wide probing fails. This primarily affects the setting of comm_exec flag when the user is un-privileged and /proc/sys/kernel/perf_event_paranoid > 0. The change to comm_exec can be observed by using -vv with perf record and a kernel that supports comm_exec. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> 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/1407855871-15024-4-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
When probing the kernel API the kernel should be excluded otherwise the probe will fail for users with insufficient privilege to profile the kernel. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Acked-by: NNamhyung Kim <namhyung@kernel.org> 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/1407855871-15024-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
With /proc/sys/kernel/perf_event_paranoid set to 2, the probe of PERF_FLAG_FD_CLOEXEC would fail. Fix by excluding kernel profiling from the probe event. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Acked-by: NNamhyung Kim <namhyung@kernel.org> 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/1407855871-15024-2-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Current perf probe --del doesn't work if only CONFIG_UPROBE_EVENTS=y because it aborts when it fails to open kprobe_events file before checking uprobe_events file. This fixes --del option to delete dynamic events if it can open either kprobe_events or uprobe_events. Only if it failed to open both of them, it shows an error message and aborts. Without this patch, if we run perf probe -d on the kernel configured with CONFIG_KPROBE_EVENTS=n and CONFIG_UPROBE_EVENTS=y, # perf probe -d \* kprobe_events file does not exist - please rebuild kernel with CONFIG_KPROBE_EVENTS. Error: Failed to delete events. With this patch, # perf probe -d \* Removed event: probe_perf:alloc_event Changes in v2: - Use strerror_r instead of strerror. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@redhat.com> 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/20140813161250.26440.24028.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Current perf probe --list doesn't work if only CONFIG_UPROBE_EVENTS=y because it aborts when it fails to open kprobe_events file before checking uprobe_events file. This fixes --list option to show dynamic events if it can open either kprobe_events or uprobe_events. Only if it failed to open both of them, it shows an error message and aborts. Without this patch, if we run perf probe -l on the kernel configured with CONFIG_KPROBE_EVENTS=n and CONFIG_UPROBE_EVENTS=y, # perf probe -l /sys/kernel/debug/tracing/kprobe_events file does not exist - please rebuild ker Error: Failed to show event list. With this patch, # perf probe -l probe_perf:alloc_event (on alloc_event@lib/traceevent/event-parse.c in /home/fedora/ksrc/linux-3/tools/perf/perf) Changes in v2: - Use strerror_r instead of strerror. Reported-by: NNaohiro Aota <naota@elisp.net> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@redhat.com> 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/20140813161248.26440.84370.stgit@kbuild-fedora.novalocalSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 13 8月, 2014 1 次提交
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由 Jiri Olsa 提交于
Adding set_term_quiet_input helper to set the terminal quiet, out from 'perf top', used in following patches in 'perf kvm'. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.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/r/1407747014-18394-9-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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