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2017-04-24perf tools: Use just forward declarations for struct thread where possibleArnaldo Carvalho de Melo1-0/+1
Removing various instances of unnecessary includes, reducing the maze of header dependencies. Link: http://lkml.kernel.org/n/tip-hwu6eyuok9pc57alookyzmsf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-24perf tools: Include sys/param.h where neededArnaldo Carvalho de Melo1-0/+1
As it is going away from util.h, where it is not needed. This is mostly for things like MAXPATHLEN, MAX() and MIN(), these later two probably should go away in favor of its kernel sources replacements. Link: http://lkml.kernel.org/n/tip-z1666f3fl3fqobxvjr5o2r39@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-19perf tools: Include errno.h where neededArnaldo Carvalho de Melo1-0/+1
Removing it from util.h, part of an effort to disentangle the includes hell, that makes changes to util.h or something included by it to cause a complete rebuild of the tools. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ztrjy52q1rqcchuy3rubfgt2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-19perf tools: Move srcline definitions to separate headerArnaldo Carvalho de Melo1-0/+1
Out of util.h into a new file, srcline.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ludnlm4djqcdjziekzr4s3u9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-30perf utils: Fix spelling mistake: "Invalud" -> "Invalid"Colin Ian King1-1/+1
Trivial fix to spelling mistake in pr_debug message. Signed-off-by: Colin King <colin.king@canonical.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Krister Johansen <kjlx@templeofstupid.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kernel-janitors@vger.kernel.org Link: http://lkml.kernel.org/r/20170330095440.19444-1-colin.king@canonical.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-27perf report: Show inline stack for browser modeJin Yao1-0/+5
If the address belongs to an inlined function, the source information back to the first non-inlined function will be printed. For example: 1. Show inlined function name perf report -g function --inline - 0.69% 0.00% inline ld-2.23.so [.] dl_main - dl_main 0.56% _dl_relocate_object _dl_relocate_object (inline) elf_dynamic_do_Rela (inline) 2. Show the file/line information perf report -g address --inline - 0.69% 0.00% inline ld-2.23.so [.] _dl_start _dl_start rtld.c:307 /build/glibc-GKVZIf/glibc-2.23/elf/rtld.c:413 (inline) + _dl_sysdep_start dl-sysdep.c:250 Signed-off-by: Yao Jin <yao.jin@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Milian Wolff <milian.wolff@kdab.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1490474069-15823-6-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-14perf tools: Add 'cgroup_id' sort order keywordHari Bathini1-0/+7
This patch introduces a cgroup identifier entry field in perf report to identify or distinguish data of different cgroups. It uses the device number and inode number of cgroup namespace, included in perf data with the new PERF_RECORD_NAMESPACES event, as cgroup identifier. With the assumption that each container is created with it's own cgroup namespace, this allows assessment/analysis of multiple containers at once. A simple test for this would be to clone a few processes passing SIGCHILD & CLONE_NEWCROUP flags to each of them, execute shell and run different workloads on each of those contexts, while running perf record command with --namespaces option. Shown below is the output of perf report, sorted with cgroup identifier, on perf.data generated with the above test scenario, clearly indicating one context's considerable use of kernel memory in comparison with others: $ perf report -s cgroup_id,sample --stdio # # Total Lost Samples: 0 # # Samples: 5K of event 'kmem:kmalloc' # Event count (approx.): 5965 # # Overhead cgroup id (dev/inode) Samples # ........ ..................... ............ # 81.27% 3/0xeffffffb 4848 16.24% 3/0xf00000d0 969 1.16% 3/0xf00000ce 69 0.82% 3/0xf00000cf 49 0.50% 0/0x0 30 While this is a start, there is further scope of improving this. For example, instead of cgroup namespace's device and inode numbers, dev and inode numbers of some or all namespaces may be used to distinguish which processes are running in a given container context. Also, scripts to map device and inode info to containers sounds plausible for better tracing of containers. Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Aravinda Prasad <aravinda@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/148891933338.25309.756882900782042645.stgit@hbathini.in.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-20perf utils: Check verbose flag properlyNamhyung Kim1-3/+3
It now can have negative value to suppress the message entirely. So it needs to check it being positive. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170217081742.17417-3-namhyung@kernel.org [ Adjust fuzz on tools/perf/util/pmu.c, add > 0 checks in many other places ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-31perf callchain: Reference count mapsKrister Johansen1-0/+7
If dso__load_kcore frees all of the existing maps, but one has already been attached to a callchain cursor node, then we can get a SIGSEGV in any function that happens to try to use this invalid cursor. Use the existing map refcount mechanism to forestall cleanup of a map until the cursor iterates past the node. Signed-off-by: Krister Johansen <kjlx@templeofstupid.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: stable@kernel.org Fixes: 84c2cafa2889 ("perf tools: Reference count struct map") Link: http://lkml.kernel.org/r/20170106062331.GB2707@templeofstupid.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-27perf tools: Propagate perf_config() errorsArnaldo Carvalho de Melo1-1/+3
Previously these were being ignored, sometimes silently. Stop doing that, emitting debug messages and handling the errors. Testing it: $ cat ~/.perfconfig cat: /home/acme/.perfconfig: No such file or directory $ perf stat -e cycles usleep 1 Performance counter stats for 'usleep 1': 938,996 cycles:u 0.003813731 seconds time elapsed $ perf top --stdio Error: You may not have permission to collect system-wide stats. Consider tweaking /proc/sys/kernel/perf_event_paranoid, <SNIP> [ perf record: Captured and wrote 0.019 MB perf.data (7 samples) ] [acme@jouet linux]$ perf report --stdio # To display the perf.data header info, please use --header/--header-only options. # Overhead Command Shared Object Symbol # ........ ....... ................. ......................... 71.77% usleep libc-2.24.so [.] _dl_addr 27.07% usleep ld-2.24.so [.] _dl_next_ld_env_entry 1.13% usleep [kernel.kallsyms] [k] page_fault $ $ touch ~/.perfconfig $ ls -la ~/.perfconfig -rw-rw-r--. 1 acme acme 0 Jan 27 12:14 /home/acme/.perfconfig $ $ perf stat -e instructions usleep 1 Performance counter stats for 'usleep 1': 244,610 instructions:u 0.000805383 seconds time elapsed $ [root@jouet ~]# chown acme.acme ~/.perfconfig [root@jouet ~]# perf stat -e cycles usleep 1 Warning: File /root/.perfconfig not owned by current user or root, ignoring it. Performance counter stats for 'usleep 1': 937,615 cycles 0.000836931 seconds time elapsed # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-j2rq96so6xdqlr8p8rd6a3jx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-11-24Merge branch 'linus' into perf/core, to pick up fixesIngo Molnar1-6/+6
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-09perf hists: Fix column length on --hierarchyNamhyung Kim1-6/+6
Markus reported that there's a weird behavior on perf top --hierarchy regarding the column length. Looking at the code, I found a dubious code which affects the symptoms. When --hierarchy option is used, the last column length might be inaccurate since it skips to update the length on leaf entries. I cannot remember why it did and looks like a leftover from previous version during the development. Anyway, updating the column length often is not harmful. So let's move the code out. Reported-and-Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 1a3906a7e6b9 ("perf hists: Resort hist entries with hierarchy") Link: http://lkml.kernel.org/r/20161108130833.9263-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-21perf c2c report: Limit the cachelines table entriesJiri Olsa1-0/+1
Add a limit for entries number of the cachelines table entries. By default now it's the 0.0005% minimum of remote HITMs. Also display only cachelines with remote hitm or store data. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-inykbom2f19difvsu1e18avr@git.kernel.org [ Disabled for now ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-20perf hists: Fix width computation for srcline sort entryJiri Olsa1-2/+4
Adding header size to width computation for srcline sort entry, because it's possible to get empty data with ':0' which set width of 2 which is lower than width needed to display column header. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1474290610-23241-62-git-send-email-jolsa@kernel.org [ Added declaration to sort.h ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13perf hist: Initialize hierarchy tree explicitlyNamhyung Kim1-0/+2
The hroot_in and hroot_out are roots of hierarchy trees of hist entries. But when a hist entry is initialized by copying existing template entry, it sometimes has non-empty tree and copies it incorrectly. This is a problem especially when an event group is used since it creates dummy entries from already-processed entries in other event members. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160913074552.13284-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13perf hists: Introduce hists__link_hierarchy()Namhyung Kim1-0/+95
The hists__link_hierarchy() is to support hierarchy reports with an event group. When it matches the leader event and the other members (using hists__match_hierarchy()), it also needs to link unmatched member entries with a dummy leader event so that it can show up in the output. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160913074552.13284-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13perf hists: Introduce hists__match_hierarchy()Namhyung Kim1-0/+51
The hists__match_hierarchy() is to find matching hist entries in a group. A matching entry has the same values for all sort keys given. With an event group (e.g.: -e "{cycles,instructions}"), a leader event should show other members in a group. So each entry in the leader should be able to find its pair entries which have same values. With hierarchy mode, it needs to search all matching children in a hierarchy. An example output looks like: # Overhead Command / Shared Object / Symbol # ...................... .................................. # 25.74% 27.18% sh 19.96% 24.14% libc-2.24.so 9.55% 14.64% [.] __strcmp_sse2 1.54% 0.00% [.] __tfind 1.07% 1.13% [.] _int_malloc ... In the above example, two overheads are shown - one for the leader and another for the other group member. They were matched since their command, dso and symbol have the same values. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160913074552.13284-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf hists: Introduce output_resort_cb methodJiri Olsa1-3/+12
When dealing with nested hist entries it's helpful to have a way to resort those nested objects. Adding optional callback call into output_resort function and following new interface function: typedef int (*hists__resort_cb_t)(struct hist_entry *he); void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog, hists__resort_cb_t cb); Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf hists: Introduce hists__add_entry_ops functionJiri Olsa1-7/+35
Introducing hists__add_entry_ops function to allow using the allocation callbacks externally. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1467701765-26194-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf hists: Introduce hist_entry_opsJiri Olsa1-4/+27
Introducing allocation callbacks, that allows to extend current hist_entry object into objects with special needs without polluting the current hist_entry object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1467701765-26194-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf hists: Introduce hist_entry__init functionJiri Olsa1-66/+73
Move the 'struct hist_entry' initialization code to a separate function. It'll be useful and more clear for the following patches that introduce allocation callbacks. Releasing the hist_entry object in hist_entry__new function (where it's allocated) rather than in hist_entry__init. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1467701765-26194-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-23perf evlist: Rename for_each() macros to for_each_entry()Arnaldo Carvalho de Melo1-1/+1
To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22perf hists: Enlarge pid sort entry sizeJiri Olsa1-1/+1
The pid sort entry currently aligns pids with 5 digits, which is not enough for current 4 million pids limit. This leads to unaligned ':' header-data output when we display 7 digits pid: # Children Self Symbol Pid:Command # ........ ........ ...................... ..................... # 0.12% 0.12% [.] 0x0000000000147e0f 2052894:krava ... Adding 2 more digit to properly align the pid limit: # Children Self Symbol Pid:Command # ........ ........ ...................... ....................... # 0.12% 0.12% [.] 0x0000000000147e0f 2052894:krava Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1466459899-1166-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf hists: Rename __hists__add_entry to hists__add_entryJiri Olsa1-17/+17
There's no reason we should suffer the '__' prefix for the base global function. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's width callbackJiri Olsa1-1/+1
Replacing perf_evsel arg perf_hpp_fmt's width callback with hists object. This will be helpful in future for non evsel related hist browsers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-23perf report: Add srcline_from/to branch sort keysAndi Kleen1-0/+9
Add "srcline_from" and "srcline_to" branch sort keys that allow to show the source lines of a branch. That makes it much easier to track down where particular branches happen in the program, for example to examine branch mispredictions, or to associate it with cycle counts: % perf record -b -e cycles:p ./tcall % perf report --sort srcline_from,srcline_to,mispredict ... 15.10% tcall.c:18 tcall.c:10 N 14.83% tcall.c:11 tcall.c:5 N 14.12% tcall.c:7 tcall.c:12 N 14.04% tcall.c:12 tcall.c:5 N 12.42% tcall.c:17 tcall.c:18 N 12.39% tcall.c:7 tcall.c:13 N 12.27% tcall.c:13 tcall.c:17 N ... % perf report --sort srcline_from,srcline_to,cycles ... 17.12% tcall.c:18 tcall.c:11 1 17.01% tcall.c:12 tcall.c:6 1 16.98% tcall.c:11 tcall.c:6 1 15.91% tcall.c:17 tcall.c:18 1 6.38% tcall.c:7 tcall.c:17 7 4.80% tcall.c:7 tcall.c:12 8 4.21% tcall.c:7 tcall.c:17 8 2.67% tcall.c:7 tcall.c:12 7 2.62% tcall.c:7 tcall.c:12 10 2.10% tcall.c:7 tcall.c:17 9 1.58% tcall.c:7 tcall.c:12 6 1.44% tcall.c:7 tcall.c:12 5 1.38% tcall.c:7 tcall.c:12 9 1.06% tcall.c:7 tcall.c:17 13 1.05% tcall.c:7 tcall.c:12 4 1.01% tcall.c:7 tcall.c:17 6 Open issues: - Some kernel symbols get misresolved. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://lkml.kernel.org/r/1463775308-32748-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-05-06perf hists: Move sort__need_collapse into struct perf_hpp_listJiri Olsa1-7/+7
Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__need_collapse into struct perf_hpp_list. Adding hists__has macro to easily access this info perf struct hists object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1462276488-26683-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-04-26perf hists: Clear dummy entry accumulated periodKan Liang1-0/+2
The accumulated period for dummy entry should also be 0. Otherwise, the total overhead could be overcounted. $ perf record -e '{LLC-load-misses,cpu/instructions/}' --call-graph=lbr ./tchain $ perf report --stdio # To display the perf.data header info, please use --header/--header-only options. # # Total Lost Samples: 0 # # Samples: 21K of event 'anon group { LLC-load-misses, cpu/instructions/ }' # Event count (approx.): 16313667937 # # Children Self Command Shared Object Symbol # ................ ................ ........... ................ ............................ # 4769.98% 0.01% 0.00% 0.01% tchain_edit [kernel.vmlinux] [k] update_fast_timekeeper 4356.18% 0.01% 0.00% 0.01% tchain_edit [kernel.vmlinux] [k] trigger_load_balance 3181.12% 0.01% 0.00% 0.01% tchain_edit [kernel.vmlinux] [k] irq_work_tick 1592.37% 0.00% 0.00% 0.00% tchain_edit [kernel.vmlinux] [k] cpu_needs_another_gp Signed-off-by: Kan Liang <kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1461565689-5862-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-04-14perf callchain: Start moving away from global per thread cursorsArnaldo Carvalho de Melo1-1/+1
The recent perf_evsel__fprintf_callchain() move to evsel.c added several new symbol requirements to the python binding, for instance: # perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 18030 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: callchain_cursor test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! # This would require linking against callchain.c to access to the global callchain_cursor variables. Since lots of functions already receive as a parameter a callchain_cursor struct pointer, make that be the case for some more function so that we can start phasing out usage of yet another global variable. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-djko3097eyg2rn66v2qcqfvn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-30perf tools: Make hists__collapse_insert_entry staticJiri Olsa1-2/+3
No need to export hists__collapse_insert_entry function. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1458823940-24583-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-23perf tools: Remove misplaced __maybe_unusedArnaldo Carvalho de Melo1-1/+1
All over the tree. Cc: David Ahern <dsahern@gmail.com> cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-8nzhnokxyp8y4v7gf0j00oyb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-10perf tools: Recalc total periods using top-level entries in hierarchyNamhyung Kim1-10/+34
When hierarchy mode is enabled, each entry in a hierarchy level shares the period. IOW an upper level entry's period is the sum of lower level entries. Thus perf uses only one of them to calculate the total period of hists. It was lowest-level (leaf) entries but it has a problem when it comes to filters. If a filter is applied, entries in the same level will be filtered or not. But upper level entries still have period of their sum including filtered one. So total sum of upper level entries will not be same as sum of lower level entries. This resulted in entries having more than 100% of overhead and it can be produced using perf top with filter(s). Reported-and-Tested-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457531222-18130-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-10perf tools: Fix command line filters in hierarchy modeNamhyung Kim1-3/+97
When a command-line filter is applied in hierarchy mode, output is broken especially when filtering on lower level. The higher level entries doesn't show up so it's hard to see the results. Also it needs to handle multi sort keys in a single hierarchy level. Before: $ perf report --hierarchy -s 'cpu,{dso,comm}' --comms swapper --stdio ... # Overhead CPU / Shared Object+Command # ........... ........................... # 13.79% [kernel.vmlinux] swapper 31.71% 000 13.80% [kernel.vmlinux] swapper 0.43% [e1000e] swapper 11.89% [kernel.vmlinux] swapper 9.18% [kernel.vmlinux] swapper After: # Overhead CPU / Shared Object+Command # ........... ............................... # 33.09% 003 13.79% [kernel.vmlinux] swapper 31.71% 000 13.80% [kernel.vmlinux] swapper 0.43% [e1000e] swapper 21.90% 002 11.89% [kernel.vmlinux] swapper 13.30% 001 9.18% [kernel.vmlinux] swapper Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457531222-18130-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-08perf hists: Use own hpp_list for hierarchy modeNamhyung Kim1-25/+35
Now each hists has its own hpp lists in hierarchy. So instead of having a pointer to a single perf_hpp_fmt in a hist entry, make it point the hpp_list for its level. This will be used to support multiple sort keys in a single hierarchy level. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457361308-514-3-git-send-email-namhyung@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-08perf hists: Introduce perf_hpp__setup_hists_formats()Namhyung Kim1-0/+12
The perf_hpp__setup_hists_formats() is to build hists-specific output formats (and sort keys). Currently it's only used in order to build the output format in a hierarchy with same sort keys, but it could be used with different sort keys in non-hierarchy mode later. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457361308-514-2-git-send-email-namhyung@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-27perf report: Update column width of dynamic entriesNamhyung Kim1-0/+11
The column width of dynamic entries is updated when comparing hist entries. However some unique entries can miss the chance to update. So move the update to output resort stage to make sure every entry will get called before display. To do that, abuse ->sort callback to update the width when the third argument is NULL. When resorting entries in normal path, it never be NULL so it should be fine IMHO. Before: # Overhead ptr / bytes_req / gfp_flags # .............. .......................................... # 37.50% 0xffff8803f7669400 37.50% 448 37.50% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 10.42% 0xffff8803f766be00 8.33% 96 8.33% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 2.08% 512 2.08% GFP_KERNEL|GFP_NOWARN|GFP_REPEAT|GFP <-- here After: # Overhead ptr / bytes_req / gfp_flags # .............. ..................................................... # 37.50% 0xffff8803f7669400 37.50% 448 37.50% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 10.42% 0xffff8803f766be00 8.33% 96 8.33% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 2.08% 512 2.08% GFP_KERNEL|GFP_NOWARN|GFP_REPEAT|GFP_NOMEMALLOC Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456512767-1164-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27perf hists: Fix dynamic entry display in hierarchyNamhyung Kim1-1/+1
When dynamic sort key is used it might not show pretty printed output. This is because the trace output was not set only for the first dynamic sort key. During hierarchy_insert_entry() it missed to pass the trace_output to dynamic entries. Also even if it did, only first entry will have it. Subsequent entries might set it during collapsing stage but it's not guaranteed. Before: $ perf report --hierarchy --stdio -s ptr,bytes_req,gfp_flags -g none # # Overhead ptr / bytes_req / gfp_flags # .............. .......................................... # 37.50% 0xffff8803f7669400 37.50% 448 37.50% 66080 10.42% 0xffff8803f766be00 8.33% 96 8.33% 66080 2.08% 512 2.08% 67280 After: # # Overhead ptr / bytes_req / gfp_flags # .............. .......................................... # 37.50% 0xffff8803f7669400 37.50% 448 37.50% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 10.42% 0xffff8803f766be00 8.33% 96 8.33% GFP_ATOMIC|GFP_NOWARN|GFP_NOMEMALLOC 2.08% 512 2.08% GFP_KERNEL|GFP_NOWARN|GFP_REPEAT|GFP Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456512767-1164-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-27perf hists: Fix comparing of dynamic entriesNamhyung Kim1-0/+8
When hist_entry__cmp() and hist_entry__collapse() are called, they should check if the dynamic entry is comparing matching hists only. Otherwise it might access different hists resulting in incorrect output. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456512767-1164-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-26perf hists browser: Show message for percent limitNamhyung Kim1-0/+2
Like the stdio, it should show messages about omitted hierarchy entries. Please refer the previous commit for more details. As it needs to check an entry is omitted or not multiple times, add the has_no_entry field in the hist entry. Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456488800-28124-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-26perf hists: Add more helper functions for the hierarchy modeNamhyung Kim1-0/+25
The hists__overhead_width() is to calculate width occupied by the overhead (and others) columns before the sort columns. The hist_entry__has_hiearchy_children() is to check whether an entry has lower entries (children) in the hierarchy to be shown in the output. This means the children should not be filtered out and above the percent limit. These two functions will be used to show information when all children of an entry is omitted by the percent limit (or filter). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456488800-28124-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-25perf hists: Support decaying in hierarchy modeNamhyung Kim1-8/+34
In the hierarchy mode, hist entries should decay their children too. Also update hists__delete_entry() to be able to free child entries. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-18-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-25perf hists: Resort after filtering hierarchyNamhyung Kim1-0/+54
In hierarchy mode, a filter can affect periods of entries in upper hierarchy. So it needs to resort the hists after filter. For example, let's look at following example: Overhead Command / Shared Object / Symbol ------------ -------------------------------- 30.00% perf 20.00% perf 10.00% main 5.00% pr_debug 5.00% memcpy 10.00% [kernel.vmlinux] 8.00% memset 2.00% cpu_idle If we apply simbol filter for 'mem' it should look like this 13.00% perf 8.00% [kernel.vmlinux] 8.00% memset 5.00% perf 5.00% memcpy Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-25perf hists: Support filtering in hierarchy modeNamhyung Kim1-8/+93
The hists__filter_hierarchy() function implements filtering in hierarchy mode. Now we have hist_entry__filter() so use it for entries in the hierarchy. It returns 3 kind of values. A negative value means that it's not filtered by this type. It marks current entry as filtered tentatively so if a lower level entry removes the filter it also removes the all parent so that we can find the entry in the output. Zero means it's filtered out by this type. A positive value means it's not filtered so it removes the filter and shows in the output. In these cases, it moves to next entry since lower level entry won't match by this type of filter anymore. Thus all children will be filtered or not together. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-7-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-24perf hists: Add helper functions for hierarchy modeNamhyung Kim1-0/+56
The rb_hierarchy_{next,prev,last} functions are to traverse all hist entries in a hierarchy. They will be used by various function which supports hierarchy output. As the rb_hierarchy_next() is used to traverse the whole hierarchy, it sometime needs to visit entries regardless of current folding state. So add enum hierarchy_move_dir and pass it to __rb_hierarchy_next() for those cases. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-24perf hists: Resort hist entries with hierarchyNamhyung Kim1-3/+91
For hierarchical output, each entry must be sorted in their rbtree (hroot) properly. Add hists__hierarchy_output_resort() to do the job. Note that those hierarchy entries share the period counts, it'd be important to update the hists->stats only once (for leaves). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-24perf hists: Basic support of hierarchical report viewNamhyung Kim1-0/+114
In the hierarchical view, entries will be grouped and sorted on the first key, and then on the second key, and so on. Add the he->hroot_{in,out} fields to keep the lower level entries. Actually this can share space, in a union, with callchain's 'sorted_root' since the hroots are only used by non-leaf entries and callchain is only used by leaf entries. It also adds the 'parent_he' and 'depth' fields which can be used by browsers. This patch only implements collapsing part which creates internal entries for each sort key. These need to be sorted by output_sort stage and to be displayed properly in the later patch(es). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-22perf tools: Fix column width setting on 'trace' sort keyNamhyung Kim1-0/+3
It missed to update column length of the 'trace' sort key in the hists__calc_col_len() so it might truncate the output. It calculated the column length in the ->cmp() callback originally but it doesn't guarantee it's called always. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1456064558-13086-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-20perf hists: Return error from hists__collapse_resort()Namhyung Kim1-10/+19
Currently hists__collapse_resort() and hists__collapse_insert_entry() don't return an error code. Now that callchain_merge() can check for errors, abort and pass the error to the user. A later patch can add more work which also can fail. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1455631723-17345-8-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-20perf hists browser: Fix percentage update on key pressNamhyung Kim1-7/+19
Currently 'perf top --tui' decrements percentage of all entries on any key press. This is because it adds total period as new samples are added to hists. As perf-top does it currently but added samples are not passed to the display thread, the percentages are decresing continuously. So separate total period stat into a different variable so that it cannot affect the output total period. This new total period stats are used only for calcualating callchain percent limit. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 0f58474ec835 ("perf hists: Update hists' total period when adding entries") Link: http://lkml.kernel.org/r/1455631723-17345-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-12perf hists: Do column alignment on the format iteratorArnaldo Carvalho de Melo1-0/+21
We were doing column alignment in the format function for each cell, returning a string padded with spaces so that when the next column is printed the cursor is at its column alignment. This ends up needlessly printing trailing spaces, do it at the format iterator, that is where we know if it is needed, i.e. if there is more columns to be printed. This eliminates the need for triming lines when doing a dump using 'P' in the TUI browser and also produces far saner results with things like piping 'perf report' to 'less'. Right now only the formatters for sym->name and the 'locked' column (perf mem report), that are the ones that end up at the end of lines in the default 'perf report', 'perf top' and 'perf mem report' tools, the others will be done in a subsequent patch. In the end the 'width' parameter for the formatters now mean, in 'printf' terms, the 'precision', where before it was the field 'width'. Reported-by: Dave Jones <davej@codemonkey.org.uk> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/n/tip-s7iwl2gj23w92l6tibnrcqzr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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