- 01 Jun, 2014 24 commits
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Namhyung Kim authored
With current output field change, GTK browser cannot display callchain information correctly since it couldn't determine where the symbol column is. This is a problem - just for now I changed to use the last column since it'll work for most cases. Also it has a same problem of the percentage as stdio code. Signed-off-by:
Namhyung Kim <namhyung@kernel.org> Cc: Arun Sharma <asharma@fb.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1401335910-16832-25-git-send-email-namhyung@kernel.orgSigned-off-by:
Jiri Olsa <jolsa@kernel.org>
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Namhyung Kim authored
On stdio, there's a problem that it shows invalid values for callchains in cumulated hist entries. It's because it only cares about the self period. But with --children behavior, we always add callchain info to the cumulated entries so it should use the value in that case. Before: # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ................ # 61.22% 0.32% swapper [kernel.kallsyms] [k] cpu_idle | --- cpu_idle | |--16530.76%-- start_secondary | |--2758.70%-- rest_init | start_kernel | x86_64_start_reservations | x86_64_start_kernel --6837850969203030.00%-- [...] After: # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ................ # 61.22% 0.32% swapper [kernel.kallsyms] [k] cpu_idle | --- cpu_idle | |--85.70%-- start_secondary | --14.30%-- rest_init start_kernel x86_64_start_reservations x86_64_start_kernel Signed-off-by: -
Namhyung Kim authored
Now perf top and perf report will show children column by default if it has callchain information. Requested-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
Rodrigo Campos <rodrigo@sdfg.com.ar> Tested-by:
Arun Sharma <asharma@fb.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1401335910-16832-23-git-send-email-namhyung@kernel.orgSigned-off-by:
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Namhyung Kim authored
Add top.children config option for setting default value of callchain accumulation. It affects the output only if one of -g or --call-graph option is given as well. A user can write .perfconfig file like below to enable accumulation by default: $ cat ~/.perfconfig [top] children = true And it can be disabled through command line: $ perf top --no-children Signed-off-by:
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Namhyung Kim authored
The --children option is for showing accumulated overhead (period) value as well as self overhead. It should be used with one of -g or --call-graph option. Signed-off-by:
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Namhyung Kim authored
Reuse hist_entry_iter__add() function to share the similar code with perf report. Note that it needs to be called with hists.lock so tweak some internal functions not to deadlock or hold the lock too long. Signed-off-by:
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Namhyung Kim authored
The new ->add_entry_cb() will be called after an entry was added to the histogram. It's used for code sharing between perf report and perf top. Note that ops->add_*_entry() should set iter->he properly in order to call the ->add_entry_cb. Also pass @arg to the callback function. It'll be used by perf top later. Signed-off-by:
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Namhyung Kim authored
Depending on the configuration perf inserts/removes the Children column in the output automatically. But it might not be what user wants if [s]he give --fields option explicitly. Signed-off-by:
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Namhyung Kim authored
Add report.children config option for setting default value of callchain accumulation. It affects the report output only if perf.data contains callchain info. A user can write .perfconfig file like below to enable accumulation by default: $ cat ~/.perfconfig [report] children = true And it can be disabled through command line: $ perf report --no-children Signed-off-by:
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Namhyung Kim authored
The --children option is for showing accumulated overhead (period) value as well as self overhead. Signed-off-by:
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Namhyung Kim authored
Sometimes it needs to disable some columns at runtime. Add help functions to support that. Signed-off-by:
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Namhyung Kim authored
If -g cumulative option is given, it needs to show entries which don't have self overhead. So apply percent-limit to accumulated overhead percentage in this case. Signed-off-by:
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Namhyung Kim authored
Print accumulated stat of a hist entry if requested. Signed-off-by:
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Namhyung Kim authored
Print accumulated stat of a hist entry if requested. Signed-off-by:
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Namhyung Kim authored
Print accumulated stat of a hist entry if requested. To do that, add new HPP_PERCENT_ACC_FNS macro and generate a perf_hpp_fmt using it. The __hpp__sort_acc() function sorts entries by accumulated period value. When accumulated periods of two entries are same (i.e. single path callchain) put the caller above since accumulation tends to put callers on higher position for obvious reason. Also add "overhead_children" output field to be selected by user. Signed-off-by:
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Namhyung Kim authored
When accumulating callchain entry, also save current snapshot of the chain so that it can show the rest of the chain. Signed-off-by:
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Namhyung Kim authored
The callchain_cursor_snapshot() is for saving current status of the callchain. It'll be used to accumulate callchain information for each node. Signed-off-by:
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Namhyung Kim authored
It is possble that a callchain has cycles or recursive calls. In that case it'll end up having entries more than 100% overhead in the output. In order to prevent such entries, cache each callchain node and skip if same entry already cumulated. Signed-off-by:
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Namhyung Kim authored
The cpumode and level in struct addr_localtion was set for a sample and but updated as cumulative callchains were added. This led to have non-matching symbol and cpumode in the output. Update it accordingly based on the fact whether the map is a part of the kernel or not. This is a reverse of what thread__find_addr_map() does. Signed-off-by:
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Namhyung Kim authored
Call __hists__add_entry() for each callchain node to get an accumulated stat for an entry. Introduce new cumulative_iter ops to process them properly. Signed-off-by:
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Namhyung Kim authored
To support callchain accumulation, @entry should be recognized if it's accumulated or not when add_hist_entry() called. The period of an accumulated entry should be added to ->stat_acc but not ->stat. Add @sample_self arg for that. Signed-off-by:
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Namhyung Kim authored
Maintain accumulated stat information in hist_entry->stat_acc if symbol_conf.cumulate_callchain is set. Fields in ->stat_acc have same vaules initially, and will be updated as callchain is processed later. Signed-off-by:
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Namhyung Kim authored
There're some duplicate code when adding hist entries. They are different in that some have branch info or mem info but generally do same thing. So introduce new struct hist_entry_iter and add callbacks to customize each case in general way. The new perf_evsel__add_entry() function will look like: iter->prepare_entry(); iter->add_single_entry(); while (iter->next_entry()) iter->add_next_entry(); iter->finish_entry(); This will help further work like the cumulative callchain patchset. Signed-off-by: -
Namhyung Kim authored
There're some duplicate code for counting number of samples. Add hists__inc_nr_samples() and reuse it. Suggested-by:
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- 22 May, 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/jolsa/perf into perf/core Pull perf/core improvements and fixes from Jiri Olsa: * Android related fixes for pager and map dso resolving (Michael Lentine) * Add -F option for specifying output fields (Namhyung Kim) Signed-off-by:
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- 21 May, 2014 15 commits
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Michael Lentine authored
This patch automatically adjusts the path of MMAP records associated with Android system libraries. The Android system is organized with system libraries found in /system/lib and user libraries in /data/app-lib. On the host system (not running Android), system libraries can be found in the downloaded NDK directory under ${NDK_ROOT}/platforms/${APP_PLATFORM}/arch-${ARCH}/usr/lib and the user libraries are installed under libs/${APP_ABI} within the apk build directory. This patch makes running the reporting tools possible on the host system using the libraries from the NDK. Signed-off-by:Michael Lentine <mlentine@google.com> Reviewed-by:
Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1400579330-5043-3-git-send-email-eranian@google.com [ fixed 'space required before the open parenthesis' checkpatch.pl errors ] Signed-off-by:
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Michael Lentine authored
This patch adds a fallback to cat for the pager. This is useful on environments, such as Android, where less does not exist. It is better to default to cat than to abort. Signed-off-by:
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Namhyung Kim authored
With new output fields option, its internal implementation was changed so add a new testcase to verify whether it breaks things. Signed-off-by:
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Namhyung Kim authored
Those print helper functions can be reused by later hist test cases so factor them out to a common location. Signed-off-by:
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Namhyung Kim authored
The reset_output_field() function is for clearing output field settings and will be used for test code in later patch. Signed-off-by:
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Namhyung Kim authored
Now we moved to the perf_hpp_[_sort]_list so no need to keep the old hist_entry__sort_list and sort__first_dimension. Also the hist_entry__sort_snprintf() can be gone as hist_entry__snprintf() provides the functionality. Signed-off-by:
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Namhyung Kim authored
Some fields missed to set default column length so it broke align in --stdio output. Add perf_hpp__reset_width() to set it to a sane default value. Note that this change will ignore -w/--column-widths option for now. Before: $ perf report -F cpu,comm,overhead --stdio ... # CPU Command Overhead # ............... ........ # 0 firefox 2.65% 0 kworker/0:0 1.45% 0 swapper 5.52% 0 synergys 0.92% 1 firefox 4.54% After: # CPU Command Overhead # ... ............... ........ # 0 firefox 2.65% 0 kworker/0:0 1.45% 0 swapper 5.52% 0 synergys 0.92% 1 firefox 4.54% Signed-off-by: -
Namhyung Kim authored
When it converted sort entries to hpp formats, it missed se->elide handling, so add it for compatibility. Signed-off-by:
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Namhyung Kim authored
The --fields option is to allow user setup output field in any order. It can receive any sort keys and following (hpp) fields: overhead, overhead_sys, overhead_us, sample and period If guest profiling is enabled, overhead_guest_{sys,us} will be available too. More more information, please see previous patch "perf report: Add -F option to specify output fields" Signed-off-by: -
Namhyung Kim authored
The hists__filter_entries() function is called when down arrow key is pressed for navigating through the entries in TUI. It has a check for filtering out entries that have very small overhead (under min_pcnt). However it just assumed the entries are sorted by the overhead so when it saw such a small overheaded entry, it just stopped navigating as an optimization. But it's not true anymore due to new --fields and --sort optoin behavior and this case users cannot go down to a next entry if ther's an entry with small overhead in-between. Signed-off-by:
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Namhyung Kim authored
Currently, what the sort_entry does is just identifying hist entries so that they can be grouped properly. However, with -F option support, it indeed needs to sort entries appropriately to be shown to users. So add ->sort() member to do it. Signed-off-by:
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Namhyung Kim authored
The -F/--fields option is to allow user setup output field in any order. It can receive any sort keys and following (hpp) fields: overhead, overhead_sys, overhead_us, sample and period If guest profiling is enabled, overhead_guest_{sys,us} will be available too. The output fields also affect sort order unless you give -s/--sort option. And any keys specified on -s option, will also be added to the output field list automatically. $ perf report -F sym,sample,overhead ... # Symbol Samples Overhead # .......................... ............ ........ # [.] __cxa_atexit 2 2.50% [.] __libc_csu_init 4 5.00% [.] __new_exitfn 3 3.75% [.] _dl_check_map_versions 1 1.25% [.] _dl_name_match_p 4 5.00% [.] _dl_setup_hash 1 1.25% [.] _dl_sysdep_start 1 1.25% [.] _init 5 6.25% [.] _setjmp 6 7.50% [.] a 8 10.00% [.] b 8 10.00% [.] brk 1 1.25% [.] c 8 10.00% Note that, the example output above is captured after applying next patch which fixes sort/comparing behavior. Requested-by: -
Namhyung Kim authored
So that it can be set properly prior to set up output fields. That makes easy to handle/warn errors during the setup since it doesn't need to be bothered with the GUI. Signed-off-by:
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Namhyung Kim authored
The perf uses different default sort orders for different use-cases, and this was scattered throughout the code. Add get_default_sort_ order() function to handle this and change initial value of sort_order to NULL to distinguish it from user-given one. Signed-off-by:
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Namhyung Kim authored
Add overhead{,_sys,_us,_guest_sys,_guest_us}, sample and period sort keys so that they can be selected with --sort/-s option. $ perf report -s period,comm --stdio ... # Overhead Period Command # ........ ............ ............... # 47.06% 152 swapper 13.93% 45 qemu-system-arm 12.38% 40 synergys 3.72% 12 firefox 2.48% 8 xchat Signed-off-by:
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