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* perf stat: handle ENXIO error for perf_event_openDavid Ahern2012-05-091-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | perf stat on PPC currently fails to run: $ perf stat -- sleep 1 Error: open_counter returned with 6 (No such device or address). /bin/dmesg may provide additional information. Fatal: Not all events could be opened. The problem is that until 2.6.37 (behavior changed with commit b0a873e) perf on PPC returns ENXIO when hw_perf_event_init() fails. With this patch we get the expected behavior: $ perf stat -v -- sleep 1 cycles event is not supported by the kernel. stalled-cycles-frontend event is not supported by the kernel. stalled-cycles-backend event is not supported by the kernel. instructions event is not supported by the kernel. branches event is not supported by the kernel. branch-misses event is not supported by the kernel. ... Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1336490956-57145-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf: Turn off compiler warnings for flex and bison generated filesGreg Kroah-Hartman2012-05-071-2/+2
| | | | | | | | | | | | | | | We don't know what types of warnings different versions of flex and bison combined with different versions of gcc is going to generate, so just punt and don't warn about anything. This fixes the build of perf for me on an openSUSE 12.1 system. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20120504183254.GA11154@kroah.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar2012-05-022-5/+30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Fixes for perf/urgent: - Add fallback in 'perf stat' for kernels that don't support perf_event_attr.exclude_guest, from Stephane Eranian. - Fix build id cache add routine to take the size of the buffer and not of a pointer, from Namhyung Kim. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * perf stat: Fix case where guest/host monitoring is not supported by kernelStephane Eranian2012-05-011-4/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default, perf stat sets exclude_guest = 1. But when you run perf on a kernel which does not support host/guest filtering, then you get an error saying the event in unsupported. This comes from the fact that when the perf_event_attr struct passed by the user is larger than the one known to the kernel there is safety check which ensures that all unknown bits are zero. But here, exclude_guest is 1 (part of the unknown bits) and thus the perf_event_open() syscall return EINVAL. To my surprise, running perf record on the same kernel did not exhibit the problem. The reason is that perf record handles the problem by catching the error and retrying with guest/host excludes set to zero. For some reason, this was not done with perf stat. This patch fixes this problem. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Link: http://lkml.kernel.org/r/20120427124538.GA7230@quad Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf build-id: Fix filename size calculationNamhyung Kim2012-05-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The filename is a pointer variable so the sizeof(filename) will return length of a pointer. Fix it by using 'size'. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1335881976-3282-1-git-send-email-namhyung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge tag 'ktest-for-v3.4-rc5' of ↵Linus Torvalds2012-05-021-3/+9
|\ \ | |/ |/| | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull two bug fixes in ktest from Steven Rostedt. * tag 'ktest-for-v3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Fix reboot on success stopping all reboots ktest.pl: Fix combined usage of BISECT_REVERSE and BISECT_SKIP
| * ktest: Fix reboot on success stopping all rebootsSteven Rostedt2012-05-011-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The change to let individual tests decide to reboot the machine on success of the entire test also prevented errors from rebooting when an error was detected. The "no_reboot" variable was only cleared if the test had reboot_on_success set. But the no_reboot variable also prevents the test rebooting when an error was detected even when REBOOT_ON_ERROR was set. Add a new "reboot_success" variable that is used to determine if the test should reboot on success and not touch the no_reboot variable. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * ktest.pl: Fix combined usage of BISECT_REVERSE and BISECT_SKIPRuss Dill2012-05-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When BISECT_REVERSE and BISECT_SKIP are used together with boot or test testing, build failures are treated as boot or test failures and 'git bisect bad' is executed instead of 'git bisect skip'. This is because the $ret value of -1 is treated as a build failure, but the $reverse_bisect logic does not properly handle this. Simple fix, only invert it if it is positive. Link: http://lkml.kernel.org/r/1335235380-8509-1-git-send-email-Russ.Dill@ti.com Signed-off-by: Russ Dill <Russ.Dill@ti.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | perf symbols: Read plt symbols from proper symtab_type binaryJiri Olsa2012-04-201-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When loading symbols from DSO we check multiple paths of DSO binary until we succeed to load symbols ('.symtab' section). Once symbols are read we try to load also plt symbols. During the reading of plt symbols, the dso file is reopened from location given by dso->long_name. This could be wrong in case we want process buildid binaries. The change is to make the plt symbols being read from the DSO path, that normal symbols were read from. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1334756818-6631-1-git-send-email-jolsa@redhat.com [ committer note: moved dso to be the first parameter of that function ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Add 'G' and 'H' modifiers to event parsingGleb Natapov2012-04-172-1/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | They were dropped during conversion of event parser. Add test case to make sure this will not happen again. Signed-off-by: Gleb Natapov <gleb@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20120417111345.GK11918@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Drop CROSS_COMPILE from flex and bison callsOtavio Salvador2012-04-161-2/+2
| | | | | | | | | | | | | | | | | | | | The flex and bison tools generate arch-independent C code so its binaries are not prefixed with the target-arch prefix. With this patch the Linux 3.4-rc2 can be successfuly build on OE-Core. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Link: http://lkml.kernel.org/r/1334148270-13139-1-git-send-email-otavio@ossystems.com.br Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf report: Fix crash showing warning related to kernel mapsDavid Ahern2012-04-161-5/+12
|/ | | | | | | | | | | | | | | | | | | | | | | | | | While testing https://lkml.org/lkml/2012/4/10/123 I hit this crash: (gdb) bt 0 0x000000000042000f in __cmd_report (rep=0x7fff80cec580) at builtin-report.c:380 1 cmd_report (argc=0, argv=<optimized out>, prefix=<optimized out>) at builtin-report.c:759 2 0x0000000000414513 in run_builtin (p=0x7724a8, argc=3, argv=0x7fff80ceca70) at perf.c:273 3 0x0000000000413d41 in handle_internal_command (argv=0x7fff80ceca70, argc=3) at perf.c:345 4 run_argv (argv=0x7fff80cec880, argcp=0x7fff80cec88c) at perf.c:389 5 main (argc=3, argv=0x7fff80ceca70) at perf.c:487 kernel_map can be NULL, so need to handle it while dumping a warning to user. v2: - fixed RB_EMPTY_ROOT check -- desc takes the altnerative output when RB_EMPTY_ROOT is false. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/1334544855-55021-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar2012-04-154-15/+15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf tooling fixes from Arnaldo Carvalho de Melo: . Properly handle ~/.debug, the build id cache, when it is a symlink, fix from Chanho Park . Fixes for the parser generation process, from Jiri Olsa and Namhyung Kim . Fix build when NO_GTK2 is specified, From Stephane Eranian . When a machine is not found, bump the relevant error stat but return 0, so that we correctly move to the next perf event. Fix from Jiri Olsa Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * perf archive: Correct cutting of symbolic linkChanho Park2012-04-141-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a '$PERF_BUILDID_DIR'(typically $HOME/.debug) is a symbolic link directory, cutting of the path will fail. Here is an example where a buildid directory is a symbolic link. / # ls -al /root lrwxrwxrwx 1 root root 13 Mar 26 2012 /root -> opt/home/root / # cd ~ /opt/home/root # perf record -a -g sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.322 MB perf.data (~14057 samples) ] /opt/home/root # perf archive tar: Removing leading `/' from member names Now please run: $ tar xvf perf.data.tar.bz2 -C ~/.debug wherever you need to run 'perf report' on. /opt/home/root # mkdir temp /opt/home/root # tar xf perf.data.tar.bz2 -C ./temp /opt/home/root # find ./temp -name "*kernel*" ./temp/opt/home/root/.debug/[kernel.kallsyms] -> If successfully cut off the path, [kernel.kallsyms] is located in top of the archived file. This patch enables to cut correctly even if the buildid directory is a symbolic link. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333348109-12598-1-git-send-email-chanho61.park@samsung.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Ignore auto-generated bison/flex filesNamhyung Kim2012-04-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 65f3e56e0c81 ("perf tools: Remove auto-generated bison/flex files") removed those files from git, so they'll be listed on untracked files after building perf. Fix it. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333948274-20043-1-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix parsers' rules to dependenciesJiri Olsa2012-04-141-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the parsers objects (bison/flex related) are each time perf is built. No matter the generated files are already in place, the parser generation is executed every time. Changing the rules to have proper flex/bison objects generation dependencies. The parsers code is not rebuilt until the flex/bison source files are touched. Also when flex/bison source is changed, only dependent objects are rebuilt. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1334140791-3024-1-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: fix NO_GTK2 Makefile config errorStephane Eranian2012-04-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case the user specified NO_GTK2 on the make cmdline, compilation would fail with undefined symbol because the Makefile would not set the correct cpp variable: NO_GTK2 vs. NO_GTK2_SUPPORT. This patch renames the variable to the correct name. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120410103513.GA9229@quad Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf session: Skip event correctly for unknown id/machineJiri Olsa2012-04-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case the perf_session__process_event function fails, we estimate the next event offset. This is not necessary for sample event failing on unknown ID or machine. In such case we know proper size of the event, so we dont need to guess. Also failure statistics are updated correctly so we don't miss any information. Forcing perf_session__process_event to return 0 in case of unknown ID or machine. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1334233262-5679-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar2012-04-137-13/+68
|\| | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull various perf tooling fixes from Arnaldo Carvalho de Melo.
| * perf kvm: Finding struct machine fails for PERF_RECORD_MMAPNikunj A. Dadhania2012-04-111-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Running 'perf kvm --host --guest --guestmount /tmp/guestmount record -a -g -- sleep 2' Was resulting in a segfault. For event type PERF_RECORD_MMAP, event->ip.pid is being used in perf_session__find_machine_for_cpumode, which is not correct. The event->ip.pid field happens to be 0 in this case and results in returning a NULL machine object. Finally, access to self->pid in machine__mmap_name, results in a segfault later. For PERF_RECORD_MMAP type, pass event->mmap.pid. Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20120409081835.10576.22018.stgit@abhimanyu.in.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate: Validate addr in symbol__inc_addr_samplesArnaldo Carvalho de Melo2012-04-064-3/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This routine was checking only if the provided address was after sym->end, not if it was before sym->start. Fix that by checking for both and return in both cases -ERANGE, so that tools can communicate this to the user properly, or if they chose so, to abort. This problem was reported previously but the fixes involved either doing what was being done for the > end case, i.e. silently drop the sample, returning 0, or aborting at this function, which is in a lib (or better, is slated to be at some point) and shouldn't abort. The 'report' tool already checks this value and uses pr_debug to warn the user. This patch makes the 'top' tool check it too and warn once per map where such range problem takes place. Reported-by: David Miller <davem@davemloft.net> Reported-by: Sorin Dumitru <dumitru.sorin87@gmail.com> Reported-by: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-lw8gs7p9i9nhldilo82tzpne@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf hists browser: Fix NULL deref in hists browsing codeJiri Olsa2012-04-051-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If there's an event with no samples in data file, the perf report command can segfault after entering the event details menu. Following steps reproduce the issue: # ./perf record -e syscalls:sys_enter_kexec_load,syscalls:sys_enter_mmap ls # ./perf report # enter '0 syscalls:sys_enter_kexec_load' menu # pres ENTER twice Above steps are valid assuming ls wont run kexec.. ;) The check for sellection to be NULL is missing. The fix makes sure it's being check. Above steps now endup with menu being displayed allowing 'Exit' as the only option. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333570898-10505-2-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf hists: Catch and handle out-of-date hist entry maps.David Miller2012-04-051-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a process exec()'s, all the maps are retired, but we keep the hist entries around which hold references to those outdated maps. If the same library gets mapped in for which we have hist entries, a new map will be created. But when we take a perf entry hit within that map, we'll find the existing hist entry with the older map. This causes symbol translations to be done incorrectly. For example, the perf entry processing will lookup the correct uptodate map entry and use that to calculate the symbol and DSO relative address. But later when we update the histogram we'll translate the address using the outdated map file instead leading to conditions such as out-of-range offsets in symbol__inc_addr_samples(). Therefore, update the map of the hist_entry dynamically at lookup/ creation time. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/20120327.031418.1220315351537060808.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf annotate: Fix hist decayArnaldo Carvalho de Melo2012-04-051-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were only decaying the entries for the offsets that were associated with an objdump line. That way, when we accrued the whole instruction addr range, more than 100% was appearing in some cases in the live annotation TUI. Fix it by not traversing the source code line at all, just iterate thru the complete addr range decaying each one. Reported-by: Mike Galbraith <mgalbraith@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-hcae5oxa22syjrnalsxz7s6n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf top: Add intel_idle to the skip listArnaldo Carvalho de Melo2012-04-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | TODO: Accrue the cycles in the skip_list to an idle total, and show this on the 'top' UI, as suggested by Steven. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-9nfecmgghgl5747rjxqpc28f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2012-04-131-0/+1
|\| | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull trivial perf build failure fix from Thomas Gleixner. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tools: Fix getrusage() related build failure on glibc trunk
| * perf tools: Fix getrusage() related build failure on glibc trunkMarkus Trippelsdorf2012-04-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On a system running glibc trunk perf doesn't build: CC builtin-sched.o builtin-sched.c: In function ‘get_cpu_usage_nsec_parent’: builtin-sched.c:399:16: error: storage size of ‘ru’ isn’t known builtin-sched.c:403:2: error: implicit declaration of function ‘getrusage’ [-Werror=implicit-function-declaration] [...] Fix it by including sys/resource.h. Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120404084527.GA294@x4 Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2012-03-3134-459/+2134
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates and fixes from Ingo Molnar: "It's mostly fixes, but there's also two late items: - preliminary GTK GUI support for perf report - PMU raw event format descriptors in sysfs, to be parsed by tooling The raw event format in sysfs is a new ABI. For example for the 'CPU' PMU we have: aldebaran:~> ll /sys/bus/event_source/devices/cpu/format/* -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/any -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/cmask -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/edge -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/event -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/inv -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/offcore_rsp -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/pc -r--r--r--. 1 root root 4096 Mar 31 10:29 /sys/bus/event_source/devices/cpu/format/umask those lists of fields contain a specific format: aldebaran:~> cat /sys/bus/event_source/devices/cpu/format/offcore_rsp config1:0-63 So, those who wish to specify raw events can now use the following event format: -e cpu/cmask=1,event=2,umask=3 Most people will not want to specify any events (let alone raw events), they'll just use whatever default event the tools use. But for more obscure PMU events that have no cross-architecture generic events the above syntax is more usable and a bit more structured than specifying hex numbers." * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) perf tools: Remove auto-generated bison/flex files perf annotate: Fix off by one symbol hist size allocation and hit accounting perf tools: Add missing ref-cycles event back to event parser perf annotate: addr2line wants addresses in same format as objdump perf probe: Finder fails to resolve function name to address tracing: Fix ent_size in trace output perf symbols: Handle NULL dso in dso__name_len perf symbols: Do not include libgen.h perf tools: Fix bug in raw sample parsing perf tools: Fix display of first level of callchains perf tools: Switch module.h into export.h perf: Move mmap page data_head offset assertion out of header perf: Fix mmap_page capabilities and docs perf diff: Fix to work with new hists design perf tools: Fix modifier to be applied on correct events perf tools: Fix various casting issues for 32 bits perf tools: Simplify event_read_id exit path tracing: Fix ftrace stack trace entries tracing: Move the tracing_on/off() declarations into CONFIG_TRACING perf report: Add a simple GTK2-based 'perf report' browser ...
| * Merge branch 'perf/urgent' of ↵Ingo Molnar2012-03-3115-8546/+135
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
| | * perf tools: Remove auto-generated bison/flex filesIngo Molnar2012-03-309-8476/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These should not be in the Git history - they are auto-generated. Extend the Makefile rules of the parser files to include the generation run. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120327183335.GA27621@gmail.com [ committer note: Fixed up O= handling ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf annotate: Fix off by one symbol hist size allocation and hit accountingArnaldo Carvalho de Melo2012-03-291-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were not noticing it because symbol__inc_addr_samples was erroneously dropping samples that hit the last byte in a function. Working on a fix for a problem reported by David Miller, Stephane Eranian and Sorin Dumitru, where addresses < sym->start were causing problems, I noticed this other problem. Cc: David Ahern <dsahern@gmail.com> Cc: David Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sorin Dumitru <dumitru.sorin87@gmail.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pqjaq4cr1xs2xen73pjhbav4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf tools: Add missing ref-cycles event back to event parserNamhyung Kim2012-03-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 89812fc81f8d ("perf tools: Add parser generator for events parsing") changed event parsing engine but missed the ref-cycles event. Add it. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333016517-10591-1-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf annotate: addr2line wants addresses in same format as objdumpDavid Miller2012-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Therefore, in symbol__get_source_line(), use map__rip_2objdump instead of calling map->unmap_ip() unconditionally. Link: http://lkml.kernel.org/r/20120325.162812.59519424882536855.davem@davemloft.net Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf probe: Finder fails to resolve function name to addressPrashanth Nageshappa2012-03-281-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If DIE entries corresponding to declarations appear before definition entry, probe finder returns error instead of continuing to look further for a definition entry. This patch ensures we reach to the DIE entry corresponding to the definition and get the function address. V2: A simpler solution based on Masami's suggestion. Signed-off-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/4F703FB9.9020407@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf symbols: Handle NULL dso in dso__name_lenDavid Miller2012-03-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We should use "[unknown]" in this case, in concert with the code in _hist_entry__dso_snprintf(). Otherwise we'll crash when recomputing the histogram column lengths in hists__calc_col_len(). Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20120325.162822.2267799792062571623.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf symbols: Do not include libgen.hDavid Miller2012-03-271-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | That causes us to end up using the XPG version of basename which can modify it's argument. Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20120327.000301.1122788061724345175.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf tools: Fix bug in raw sample parsingStephane Eranian2012-03-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In perf_event__parse_sample(), the array variable was not incremented by the amount of data used by the raw_data. That was okay until we added PERF_SAMPLE_BRANCH_STACK which depends on the array variable pointing to the beginning of the branch stack data. But that was not the case if branch stack was combined with raw mode sampling. That led to bogus branch stack addresses and count. The bug would show up with: $ perf record -R -b foo This patch fixes the problem by correctly moving the array pointer forward for RAW samples. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120317222317.GA8803@quad [ committer note: Fix also later submitted by Jiri Olsa ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf tools: Fix display of first level of callchainsFrederic Weisbecker2012-03-261-64/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The callchain stdio mode display was written using a sorted by symbol report. In this mode we have only one callchain root per hist so we forgot to handle cases where we have multiple callchain root, as in per dso sorting for example. Fix this by handling these roots like any other branch, with the hist as the parent. Before: 1.97% libpthread-2.12.1.so | --- __libc_write create_worker bench_sched_messaging cmd_bench run_builtin main __libc_start_main | --- __libc_read create_worker bench_sched_messaging cmd_bench run_builtin main __libc_start_main After: 1.97% libpthread-2.12.1.so | |--36.97%-- __libc_write | create_worker | bench_sched_messaging | cmd_bench | run_builtin | main | __libc_start_main | |--31.47%-- __libc_read | create_worker | bench_sched_messaging | cmd_bench | run_builtin | main | __libc_start_main ... Single roots keep their entry without percentage because they have the same overhead than the hist they refer to. ie: 100% in fractal mode and the percentage of the hist in graph mode: 0.00% [k] reschedule_interrupt | --- default_idle amd_e400_idle cpu_idle start_secondary Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1332526010-15400-1-git-send-email-fweisbec@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | perf tools: Switch module.h into export.hJiri Olsa2012-03-262-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When merged to Linus's latest tree the perf build is broken due to following change in lib/rbtree.c object: lib: reduce the use of module.h wherever possible commit 8bc3bcc93a2b4e47d5d410146f6546bca6171663 Author: Paul Gortmaker <paul.gortmaker@windriver.com> Date: Wed Nov 16 21:29:17 2011 -0500 We need to move module.h header into export.h. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: cjashfor@linux.vnet.ibm.com Cc: fweisbec@gmail.com Link: http://lkml.kernel.org/r/1332753425-3299-1-git-send-email-jolsa@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | Merge branch 'linus' into perf/urgentIngo Molnar2012-03-269-93/+614
| |\ \ | | |/ | |/| | | | | | | | | | Merge reason: we need to fix a non-trivial merge conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | perf diff: Fix to work with new hists designJiri Olsa2012-03-225-30/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The perf diff command is broken since: perf hists: Threaded addition and sorting of entries commit 1980c2ebd7020d82c024b8c4046849b38e78e7da Several places were broken: - hists data need to be collected into opened sessions instead of into events - session's hists data need to be initialized properly when the session is created - hist_entry__pcnt_snprintf: the percentage and displacement buffer preparation must not use 'ret' because it's used as a pointer to the final buffer Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120322133726.GB1601@m.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | perf tools: Fix modifier to be applied on correct eventsJiri Olsa2012-03-226-337/+543
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The event modifier needs to be applied only on the event definition it is attached to. The current state is that in case of multiple events definition (in single '-e' option, separated by ',') all will get modifier of the last one. Fixing this by adding separated list for each event definition, so the modifier is applied only to proper event(s). Added automated test to catch this, plus some other modifier tests. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1332267341-26338-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | perf tools: Fix various casting issues for 32 bitsJiri Olsa2012-03-222-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - util/parse-events.c(parse_events_add_breakpoint) need to use unsigned long instead of u64, otherwise we get following gcc error on 32 bits: error: cast from pointer to integer of different size - util/header.c(print_event_desc) cannot retype to signed type, otherwise we get following gcc error on 32 bits: error: comparison between signed and unsigned integer expressions Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1332267341-26338-2-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | perf tools: Simplify event_read_id exit pathBorislav Petkov2012-03-221-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're freeing the token in any case so simplify the exit path by unifying it. No functional change. Signed-off-by: Borislav Petkov <bp@amd64.org> Link: http://lkml.kernel.org/r/1332339347-21342-1-git-send-email-bp@amd64.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | Merge branch 'perf/urgent' into perf/coreArnaldo Carvalho de Melo2012-03-2214-34/+49
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge Reason: to pick the fix: commit e7f01d1 perf tools: Use scnprintf where applicable Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | perf report: Add a simple GTK2-based 'perf report' browserPekka Enberg2012-03-198-4/+272
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a simple GTK2-based browser to 'perf report' that's based on the TTY-based browser in builtin-report.c. To launch "perf report" using the new GTK interface just type: $ perf report --gtk The interface is somewhat limited in features at the moment: - No callgraph support - No KVM guest profiling support - No color coding for percentages - No sorting from the UI - ..and many, many more! That said, I think this patch a reasonable start to build future features on. Signed-off-by: Pekka Enberg <penberg@kernel.org> Cc: Colin Walters <walters@verbum.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@kernel.org> Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1202231952410.6689@tux.localdomain [ committer note: Added #pragma to make gtk no strict prototype problem go away as suggested by Colin Walters modulo avoiding push/pop ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | perf report: Document --symbol-filter optionNamhyung Kim2012-03-191-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing description of --symbol-filter in Documentation/perf-report.txt. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1332125628-23088-1-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | perf ui browser: Clean lines inside of the input windowNamhyung Kim2012-03-191-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Arnaldo pointed out, it should be cleared to prevent the window from displaying overlapped strings on the region. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1332125180-23041-1-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | perf report: Treat an argument as a symbol filterNamhyung Kim2012-03-161-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Ingo requested, it'd be better off treating first (and the only) argument as a symbol filter, so that user doesn't need to input the symbol on the dialog window on TUI. Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1331887855-874-5-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | perf report: Add --symbol-filter optionNamhyung Kim2012-03-161-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new --symbol-filter command line option to set appropriate filter string. Its short version is missing as I couldn't find an ideal one and --filter option of perf record also has no short version. Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1331887855-874-4-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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