- 24 6月, 2015 4 次提交
-
-
由 Adrian Hunter 提交于
With 'perf report -D' the PERF_RECORD_FINISHED_ROUND event was printed without a newline, resulting in: 0x91a18 [0x8]: PERF_RECORD_FINISHED_ROUNDAggregated stats Other events print their details, but PERF_RECORD_FINISHED_ROUND doesn't have any so just add a print for a newline. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1435045969-15999-1-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Andi Kleen 提交于
The Intel events use a dot to separate event name and unit mask. Allow dot in names in the scanner, and remove special handling of dot as EOF. Also remove the hack in jevents to replace dot with underscore. This way dotted events can be specified directly by the user. I'm not fully sure this change to the scanner is correct (what was the dot special case good for?), but I haven't found anything that breaks with it so far at least. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Acked-by: NNamhyung Kim <namhyung@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1433921123-25327-8-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>
-
由 Sukadev Bhattiprolu 提交于
Separate the event parsing code in perf_pmu__new_alias() out into a separate function __perf_pmu__new_alias() so that code can be called indepdently. This is based on an earlier patch from Andi Kleen. Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1433921123-25327-5-git-send-email-sukadev@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Sukadev Bhattiprolu 提交于
Jiri Olsa pointed out, that the <linux/compiler.h> defines the attribute '__weak'. We might as well use that. Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1433921123-25327-4-git-send-email-sukadev@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 22 6月, 2015 4 次提交
-
-
由 Jiri Olsa 提交于
Currently if we build a single target like: $ touch util/map.c && make util/map.o It will not rebuild util/map.o if it already exists and util/map.c is modified. The reason is that the top-level 'Makefile' processes util/map.o as an implicit rule and if util/map.o exists make considers the 'util/map.o' target as done and will not nest into Makefile.perf. Adding FORCE for '%', because that's what we want to nest into Makefile.perf for any target. Adding Makefile into phony targets, because make tries to rebuild it and it's also resolved as '%' target. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Lukas Wunner <lukas@wunner.de> 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/1434977452-32520-4-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
Lukas Wunner reported issue (and fix[1]) with 'make install prefix=...'. Adding automated test for this, so it wouldn't happen again. [1]: 75e84ab9 ("perf tools: Fix build breakage if prefix= is specified") Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Lukas Wunner <lukas@wunner.de> 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/1434977452-32520-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
Currently we test only builds through top level Makefile, but seems like there's a bunch of users using Makefile.perf directly. Changing the make suite to be run for Makefile.perf as well. It takes now considerable amount of time, but hopefully we catch more issues. Also fixing the output indentation for make_kernelsrc and make_kernelsrc_tools tests. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Lukas Wunner <lukas@wunner.de> 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/1434977452-32520-2-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Namhyung Kim 提交于
Current 'f' key action to enable/disable events won't work if there're more than one event since perf_evsel_menu__run() doesn't return the key. So move it to the hists browser loop so that it can be processed as like other key action, and it's more natural to handle it there IMHO. Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1434858076-6533-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 20 6月, 2015 12 次提交
-
-
由 Ingo Molnar 提交于
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - Replace CTRL+z with 'f' as hotkey for enable/disable events (Arnaldo Carvalho de Melo) - Do not exit when 'f' is pressed in 'report' mode (Arnaldo Carvalho de Melo) - Tell the user how to unfreeze events after pressing 'f' in 'perf top' (Arnaldo Carvalho de Melo) - React to unassigned hotkey pressing in 'top/report' (Arnaldo Carvalho de Melo) - Display total number of samples with --show-total-period in 'annotate' (Martin Liška) - Add timeout to make procfs mmap processing more robust (Kan Liang) - Fix sort__sym_cmp to also compare end of symbol (Yannick Brosseau) Infrastructure changes: - Ensure thread-stack is flushed (Adrian Hunter) Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NIngo Molnar <mingo@kernel.org>
-
由 Kan Liang 提交于
The time out to limit the individual proc map processing was hard code to 500ms. This patch introduce a new option --proc-map-timeout to make the time limit configurable. Signed-off-by: NKan Liang <kan.liang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ying Huang <ying.huang@intel.com> Link: http://lkml.kernel.org/r/1434549071-25611-2-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Kan Liang 提交于
System wide sampling like 'perf top' or 'perf record -a' read all threads /proc/xxx/maps before sampling. If there are any threads which generating a keeping growing huge maps, perf will do infinite loop during synthesizing. Nothing will be sampled. This patch fixes this issue by adding per-thread timeout to force stop this kind of endless proc map processing. PERF_RECORD_MISC_PROC_MAP_PARSE_TIME_OUT is introduced to indicate that the mmap record are truncated by time out. User will get warning notification when truncated mmap records are detected. Reported-by: NYing Huang <ying.huang@intel.com> Signed-off-by: NKan Liang <kan.liang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ying Huang <ying.huang@intel.com> Link: http://lkml.kernel.org/r/1434549071-25611-1-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Yannick Brosseau 提交于
When using a map file from a JIT, due to memory reuse, we can obtain multiple symbols with the same start address but a different length. The symbols__find does check for the end so not doing it in sort__sym_cmp was causing the hist_entry in the annotate part of a report to match to the wrong entry, causing a fatal error. Signed-off-by: NYannick Brosseau <scientist@fb.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: kernel-team@fb.com Link: http://lkml.kernel.org/r/1434584470-17771-1-git-send-email-scientist@fb.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
When that happens we were just ignoring the key press, now this message is presented in the bottom line (the help line): "Press '?' for help on key bindings" Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-iyma2j5kj3q9i1stl4mfh90n@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
When the user presses 'f' to disable events the visual cues are, well, the percentages not changing and the number of events freezing. Be more explicit by changing the help line at the bottom of the screen to show the following messages when 'f' is pressed: "Press 'f' again to re-enable the events" And then, when 'f' is pressed again: "Press 'f' to disable the events or 'h' Suggested-by: NIngo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-uhiswg9a9rxm5gxg7ptjskjn@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
The hists_browser was replacing whatever helpline provided by 'top' or 'report' with a static "Press '?' for help on key bindings", fix it. Now the message passed by top appears at the bottom of the screen: "For a higher level overview, try: perf top --sort comm,dso" As well the message that will be added when the user presses 'f' to disable the events, something along the lines of "press f again to re-enable...". Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-dacaja70mbfz3a0yj1n180gx@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
The 'f' hotkey is only used when in 'top', dynamic mode, to enable/disable events, currently not making sense in the 'report', static mode, where we can't go from showing the histogram entries created from a perf.data file to adding more events after recreating the evlist created from the perf.data file, albeit possible, this is not implemented right now. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-lholzf472pu98dkkijggwx2m@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
I.e. 'freeze'/'unfreeze', this is because CTRL+z has a well known action, i.e. suspend the app, perf needs to follow that convention, that will be done on a separate patch, tho. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-oedcl6ovohara4koig14ayip@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
To better reflect the purpose of this struct, that is to hold info about samples, its total number and is percentage. Cc: Martin Liska <mliska@suse.cz> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-6bf8gwcl975uurl0ttpvtk69@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Martin Liška 提交于
To compare two records on an instruction base, with --show-total-period option provided, display total number of samples that belong to a line in assembly language. New hot key 't' is introduced for 'perf annotate' TUI. Signed-off-by: NMartin Liska <mliska@suse.cz> Cc: Andi Kleen <andi@firstfloor.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/5583E26D.1040407@suse.czSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Adrian Hunter 提交于
The thread-stack represents a thread's current stack. When a thread exits there can still be many functions on the stack e.g. exit() can be called many levels deep, so all the callers will never return. To get that information output, the thread-stack must be flushed. Previously it was assumed the thread-stack would be flushed when the struct thread was deleted. With thread ref-counting it is no longer clear when that will be, if ever. So instead explicitly flush all the thread-stacks at the end of a session. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1432906425-9911-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 18 6月, 2015 8 次提交
-
-
由 Ingo Molnar 提交于
Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - List perf probes to stdout. (Masami Hiramatsu) - Return error when none of the requested probes were installed. (Masami Hiramatsu) - Cut off the gcc optimization postfixes from function name in 'perf probe'. (Masami Hiramatsu) - Allow disabling/enabling events dynamicly in 'perf top': a 'perf top' session can instantly become a 'perf report' one, i.e. going from dynamic analysis to a static one, returning to a dynamic one is possible, to toogle the modes, just press CTRL+z. (Arnaldo Carvalho de Melo) - Greatly speed up 'perf probe --list' by caching debuginfo. (Masami Hiramatsu) - Fix 'perf trace' race condition at the end of started workloads. (Sukadev Bhattiprolu) - Fix a problem when opening old perf.data with different byte order. (Wang Nan) Infrastructure changes: - Replace map->referenced & maps->removed_maps with map->refcnt. (Arnaldo Carvalho de Melo) - Introduce the xyarray__reset() function. (Jiri Olsa) - Add thread_map__(alloc|realloc)() helpers. (Jiri Olsa) - Move perf_evsel__(alloc|free|reset)_counts into stat object. (Jiri Olsa) - Introduce perf_counts__(new|delete|reset)() functions. (Jiri Olsa) - Ignore .config-detected in .gitignore. (Wang Nan) - Move libtraceevent dynamic list to separated LDFLAGS variable. (Wang Nan) Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NIngo Molnar <mingo@kernel.org>
-
由 Arnaldo Carvalho de Melo 提交于
Now it is possible to press CTRL+z at anytime and that will disable the events being monitored, essentially turning 'top' into 'report', with pressing CTRL+z again making it enable the events again, returning to the 'top' behaviour, i.e. dynamic + decaying of older samples. One may want, for instance, play with: -d, --delay <n> number of seconds to delay between refreshes and: -z, --zero zero history across updates Plus CTRL+z to see only the events since last zeroing, etc. Suggested-by: NIngo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-zq7tnh5462blt2yda0bcxh5b@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
For an upcoming feature in 'perf top' we will have a hotkey to enable/disable events, so remember if the events in the list are enabled or disabled and allows toggling this state using a new method. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-64c4jvdl5feg2zhimxvokqka@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Sukadev Bhattiprolu 提交于
I get following crash on multiple systems and across several releases (at least since v3.18). Core was generated by `/tmp/perf trace sleep 0.2 '. Program terminated with signal SIGSEGV, Segmentation fault. #0 perf_mmap__read_head (mm=0x3fff9bf30070) at util/evlist.h:195 195 u64 head = ACCESS_ONCE(pc->data_head); (gdb) bt #0 perf_mmap__read_head (mm=0x3fff9bf30070) at util/evlist.h:195 #1 perf_evlist__mmap_read (evlist=0x10027f11910, idx=<optimized out>) at util/evlist.c:637 #2 0x000000001003ce4c in trace__run (argv=<optimized out>, argc=<optimized out>, trace=0x3fffd7b28288) at builtin-trace.c:2259 #3 cmd_trace (argc=<optimized out>, argv=<optimized out>, prefix=<optimized out>) at builtin-trace.c:2799 #4 0x00000000100657b8 in run_builtin (p=0x10176798 <commands+480>, argc=3, argv=0x3fffd7b2b550) at perf.c:370 #5 0x00000000100063e8 in handle_internal_command (argv=0x3fffd7b2b550, argc=3) at perf.c:429 #6 run_argv (argv=0x3fffd7b2af70, argcp=0x3fffd7b2af7c) at perf.c:473 #7 main (argc=3, argv=0x3fffd7b2b550) at perf.c:588 The problem seems to be a race condition, when the application has just exited. Some/all fds associated with the perf-events (tracepoints) go into a POLLHUP/ POLLERR state and the mmap region associated with those events are unmapped (in perf_evlist__filter_pollfd()). But we go back and do a perf_evlist__mmap_read() which assumes that the mmaps are still valid and we hit the crash. If the mapping for an event is released, its refcnt is 0 (and ->base is NULL), so ensure we have non-zero refcount before accessing the map. Note that perf-record has a similar logic but unlike perf-trace, the record__mmap_read_all() checks the evlist->mmap[i].base before accessing the map. Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Li Zhang <zhlcindy@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20150612060003.GA19913@us.ibm.com [ Fixed it up to use atomic_read() ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Masami Hiramatsu 提交于
Speed up the "perf probe --list" by caching the last used debuginfo. perf probe --list always open and load debuginfo for each entry of probe list. This takes very a long time. E.g. with vfs_* events (total 96 probes) [root@localhost perf]# time ./perf probe -l &> /dev/null real 0m25.376s user 0m24.381s sys 0m1.012s To solve this issue, this adds debuginfo_cache to cache the last used debuginfo on memory. With this fix, the perf-probe --list significantly improves its speed. [root@localhost perf]# time ./perf probe -l &> /dev/null real 0m0.161s user 0m0.136s sys 0m0.025s Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150617145854.19715.15314.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Masami Hiramatsu 提交于
When the last part of converted events are blacklisted or out-of-text, those are skipped and perf probe doesn't show usage examples. This fixes it to show the example even if the last part of event list is skipped. E.g. without this patch, events are added, but suddenly end: # perf probe vfs_* vfs_caches_init_early is out of .text, skip it. vfs_caches_init is out of .text, skip it. Added new events: probe:vfs_fallocate (on vfs_*) probe:vfs_open (on vfs_*) ... probe:vfs_dentry_acceptable (on vfs_*) probe:vfs_load_quota_inode (on vfs_*) # With this fix: # perf probe vfs_* vfs_caches_init_early is out of .text, skip it. vfs_caches_init is out of .text, skip it. Added new events: probe:vfs_fallocate (on vfs_*) ... probe:vfs_load_quota_inode (on vfs_*) You can now use it in all perf tools, such as: perf record -e probe:vfs_load_quota_inode -aR sleep 1 Note that this can be reproduced ONLY IF the vfs_caches_init* is the last part of matched symbol list. I've checked this happens on "3.19.0-generic #18-Ubuntu" kernel binary. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150616115057.19906.5502.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Wang Nan 提交于
Commit e3d09ec8 ("tools lib traceevent: Export dynamic symbols used by traceevent plugins") adds libtraceevent dynamic list directly into LDFLAGS, which makes all targets depend on that list through LDFLAGS. This is not good since some of targets like libgtk.so doesn't use plugin at all, but require the existance of that list because of linker options. This patch isolates the -Xlink option into LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS, makes only perf and perf.so use it. Signed-off-by: NWang Nan <wangnan0@huawei.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1434552389-89144-1-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Wang Nan 提交于
Following error occurs when trying to use 'perf report' on x86_64 to cross analysis a perf.data generated by an old perf on a big-endian machine: # perf report *** Error in `/home/w00229757/perf': free(): invalid next size (fast): 0x00000000032c99f0 *** ======= Backtrace: ========= /lib64/libc.so.6(+0x6eeef)[0x7ff6ff7e2eef] /lib64/libc.so.6(+0x78cae)[0x7ff6ff7eccae] /lib64/libc.so.6(+0x79987)[0x7ff6ff7ed987] /path/to/perf[0x4ac734] /path/to/perf[0x4ac829] /path/to/perf(perf_header__process_sections+0x129)[0x4ad2c9] /path/to/perf(perf_session__read_header+0x2e1)[0x4ad9e1] /path/to/perf(perf_session__new+0x168)[0x4bd458] /path/to/perf(cmd_report+0xfa0)[0x43eb70] /path/to/perf[0x47adc3] /path/to/perf(main+0x5f6)[0x42fd06] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff6ff795bd5] /path/to/perf[0x42fe35] ======= Memory map: ======== [SNIP] The bug is in perf_event__attr_swap(). It swaps all fields in 'struct perf_event_attr' without checking whether the swapped field exist or not. In addition, in read_event_desc() allocs memory for attr according to size read from perf.data. Therefore, if the perf.data is collected by an old perf (without aux_watermark, for example), when perf_event__attr_swap() swaping attr->aux_watermark it destroy malloc's metadata. This patch introduces boundary checking in perf_event__attr_swap(). It adds macros bswap_field_64 and bswap_field_32 into perf_event__attr_swap() to make it only swap exist fields. Signed-off-by: NWang Nan <wangnan0@huawei.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1434534999-85347-1-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 17 6月, 2015 1 次提交
-
-
由 Wang Nan 提交于
Commit fcfd6611 ("tools build: Add detected config support") dynamically creates .config-detected. Add it to .gitignore. Signed-off-by: NWang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/r/1434542358-5430-1-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 16 6月, 2015 9 次提交
-
-
由 Masami Hiramatsu 提交于
Fix perf probe to return an error if no probe is added due to the given probe point being on the blacklist. To fix this problem, this moves the blacklist checking to right after finding symbols/probe-points and marks them as skipped. If all the symbols are skipped, "perf probe" returns an error as it fails to find the corresponding probe address. E.g. currently if a blacklisted probe is given: # perf probe do_trap && echo 'succeed' Added new event: Warning: Skipped probing on blacklisted function: sync_regs succeed No! It must fail! With this patch, it correctly fails: # perf probe do_trap && echo 'succeed' do_trap is blacklisted function, skip it. Probe point 'do_trap' not found. Error: Failed to add events. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150616115055.19906.31359.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Hou Pengyang 提交于
When libunwind is on, there is a compile error as : util/unwind-libunwind.c:363:21: error: 'dso' undeclared (first use in this function) dso__data_put_fd(dso); This patch fixes it. Signed-off-by: NHou Pengyang <houpengyang@huawei.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 4bb11d01 ("perf tools: Add dso__data_get/put_fd()") Link: http://lkml.kernel.org/r/1434453395-10560-1-git-send-email-houpengyang@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
Move 'struct perf_counts' allocation|free|reset code into separate functions. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> 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/1434269985-521-13-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
It's stat specific. Updating python build objects with stat.c. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> 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/1434269985-521-12-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
In order to have 'struct thread_map' allocation on single place and can change it easily in following patch. Using alloc|realloc for static helpers, because thread_map__new is already used in public interface. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> 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/1434269985-521-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Jiri Olsa 提交于
To zero all the xyarray contents. It will be used in following patches. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> 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/1434269985-521-2-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Masami Hiramatsu 提交于
Since commit 5e17b28f ("perf probe: Add --quiet option to suppress output result message") have replaced printf with pr_info, perf probe -l outputs its result in stderr. However, that is not what the commit expected. E.g.: # perf probe -l > /dev/null probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) With this fix: # perf probe -l > list # cat list probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) Of course, --quiet(-q) still works on --add/--del. # perf probe -q vfs_write # perf probe -l probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) probe:vfs_write (on vfs_write@ksrc/linux-3/fs/read_write.c) ----- Reported-by: NNaohiro Aota <naota@elisp.net> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150613013116.24402.2923.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Wang Nan 提交于
'make build-test' finds an error that make_python_perf_so fails due to missing of libtraceevent-dynamic-list: '.../python2' util/setup.py \ --quiet build_ext; \ mkdir -p python && \ cp python_ext_build/lib/perf.so python/ /path/to/ld: cannot open linker script file /path/to/kernel/tools/lib/traceevent/libtraceevent-dynamic-list: No such file or directory collect2: error: ld returned 1 exit status error: command 'x86_64-linux-gcc' failed with exit status 1 cp: cannot stat 'python_ext_build/lib/perf.so': No such file or directory make[3]: *** [python/perf.so] Error 1 make[2]: *** [python/perf.so] Error 2 test: test -f ./python/perf.so make[1]: *** [make_python_perf_so] Error 1 make: *** [build-test] Error 2 make: Leaving directory `/path/to/kernel/tools/perf' This is caused by commit e3d09ec8 ("tools lib traceevent: Export dynamic symbols used by traceevent plugins") that, it adds the list file to LDFLAGS but forgot to add it to dependency list of python/perf.so. This patch fixes this problem. Signed-off-by: NWang Nan <wangnan0@huawei.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/r/1434079031-123162-1-git-send-email-wangnan0@huawei.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
由 Arnaldo Carvalho de Melo 提交于
Use just reference counts, so that when no more hist_entry instances references a map and the thread instance goes away by processing a PERF_RECORD_EXIT, we can delete the maps. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-oym7lfhcc7ss6xpz44h7nbxs@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 13 6月, 2015 1 次提交
-
-
由 Masami Hiramatsu 提交于
Cut off the postfixes which gcc added for optimized routines from the event name automatically generated from symbol name, since *probe-events doesn't accept it. Those symbols will be used if we don't use debuginfo to find target functions. E.g. without this fix; ----- # perf probe -va alloc_buf.isra.23 probe-definition(0): alloc_buf.isra.23 symbol:alloc_buf.isra.23 file:(null) line:0 offset:0 return:0 lazy:(null) [...] Opening /sys/kernel/debug/tracing/kprobe_events write=1 Added new event: Writing event: p:probe/alloc_buf.isra.23 _text+4869328 Failed to write event: Invalid argument Error: Failed to add events. Reason: Invalid argument (Code: -22) ----- With this fix; ----- perf probe -va alloc_buf.isra.23 probe-definition(0): alloc_buf.isra.23 symbol:alloc_buf.isra.23 file:(null) line:0 offset:0 return:0 lazy:(null) [...] Opening /sys/kernel/debug/tracing/kprobe_events write=1 Added new event: Writing event: p:probe/alloc_buf _text+4869328 probe:alloc_buf (on alloc_buf.isra.23) You can now use it in all perf tools, such as: perf record -e probe:alloc_buf -aR sleep 1 ----- Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naohiro Aota <naota@elisp.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150612050820.20548.41625.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
-
- 12 6月, 2015 1 次提交
-
-
由 Ingo Molnar 提交于
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes: User visible changes: - Beautify the perf_event_open() syscall in 'perf trace'. (Arnaldo Carvalho de Melo) - Error out unsupported group leader immediately in 'perf stat'. (Kan Liang) - Amend some 'perf record' option summaries (period, etc). (Peter Zijlstra) - Avoid possible race condition in copyfile() in 'perf buildid-cache'. (Milos Vyletel) Infrastructure changes: - Display 0x for hex values when printing the attribute. (Adrian Hunter) - Update MANIFEST per files removed from kernel. (David Ahern) Build fixes: - Fix PRIu64 printf related failure on 32-bit arch. (He Kuang) Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NIngo Molnar <mingo@kernel.org>
-