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* perf symbols: Avoid resolving [kernel.kallsyms] to real path for buildid cacheLin Ming2011-03-09
| | | | | | | | | | | | | | | | | | | | | kallsyms has a virtual file name [kernel.kallsyms]. Currently, it can't be added to buildid cache successfully because the code (build_id_cache__add_s) tries to resolve [kernel.kallsyms] to a real absolute pathname and that fails. Fixes it by not resolving it and just use the name [kernel.kallsyms]. So dir ~/.debug/[kernel.kallsyms] is created. Original bug report at: https://lkml.org/lkml/2011/3/1/524 Tested-by: Han Pingtian <phan@redhat.com> Cc: Han Pingtian <phan@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1299165837-27817-1-git-send-email-ming.m.lin@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Fix vmlinux path when not using --symfsArnaldo Carvalho de Melo2011-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | The ec5761e cset introduced the symfs feature with a bug for loading vmlinux files that ended up causing this failure: [root@emilia v2.6.38-rc5+]# strace -e trace=open perf top --vmlinux ./vmlinux 2>&1 | tail -3 open("/./vmlinux", O_RDONLY) = -1 ENOENT (No such file or directory) ./vmlinux with build id b9266bf40e98dadb5d43a2f3e95d3c5d4aff46dc not found, continuing without symbols The ./vmlinux file can't be used [root@emilia v2.6.38-rc5+]# Remove the extra slash, just like is done in the DSO__ORIG_DSO handling in dso__load() and other parts of the ec5761e cset. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: David Ahern <daahern@cisco.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf timechart: Fix max number of cpusThomas Renninger2011-02-28
| | | | | | | | | | | | | | | | | Currently numcpus is determined in pid_put_sample which is only called on sched_switch/sched_wakeup sample processing. On a machine with a lot cpus I often saw the last cpu missing. Check for (max) numcpus on every event happening and in the beginning. -> fixes the issue for me. Signed-off-by: Thomas Renninger <trenn@suse.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: lenb@kernel.org LKML-Reference: <1298842606-55712-6-git-send-email-trenn@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf timechart: Fix black idle boxes in the titleThomas Renninger2011-02-28
| | | | | | | | | | | | | | | This fix is needed for eye of gnome and firefox svg viewers. Only Inkscape can handle the broken case. Compare with the other svg_legenda_box declarations, looks like a typo slipped in at this place. Signed-off-by: Thomas Renninger <trenn@suse.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: lenb@kernel.org LKML-Reference: <1298842606-55712-5-git-send-email-trenn@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* perf hists: Print number of samples, not the period sumArnaldo Carvalho de Melo2011-02-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that we match the header where we state the number of events with the "Samples" column when using 'perf report -n/--show-nr-samples': [root@emilia ~]# perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.111 MB perf.data (~4860 samples) ] [root@emilia ~]# perf report --stdio --show-nr-samples # Events: 11 cycles # # Overhead Samples Command Shared Object Symbol # ........ .......... ........... .................. ............................ # 16.65% 1 sleep [kernel.kallsyms] [k] unmap_vmas 16.10% 1 perf libpthread-2.12.so [.] __pthread_cleanup_push_defer 15.79% 2 perf [kernel.kallsyms] [k] format_decode 12.88% 1 kworker/1:2 [kernel.kallsyms] [k] cache_reap 10.69% 1 swapper [kernel.kallsyms] [k] _raw_spin_lock 7.55% 1 sleep [kernel.kallsyms] [k] prepare_exec_creds 6.00% 1 perf [jbd2] [k] start_this_handle 5.29% 1 perf [kernel.kallsyms] [k] seq_read 4.75% 1 perf [kernel.kallsyms] [k] get_pid_task 4.30% 1 perf [kernel.kallsyms] [k] _raw_spin_unlock_irqrestore # # (For a higher level overview, try: perf report --sort comm,dso) # [root@emilia ~]# Reported-by: Stephane Eranian <eranian@google.com> Reported-by: Cliff Wickman <cpw@sgi.com> Acked-by: Stephane Eranian <eranian@google.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: <stable@kernel.org> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> [ cherry-picked it from perf/core, as it has been reported by others as well. ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'tools-release' of ↵Linus Torvalds2011-02-15
|\ | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'tools-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: tools: turbostat: style updates tools: turbostat: fix bitwise and operand
| * tools: turbostat: style updatesLen Brown2011-02-10
| | | | | | | | | | | | | | | | | | | | | | Follow kernel coding style traditions more closely. Delete typedef, re-name "per cpu counters" to simply be counters etc. This patch changes no functionality. Suggested-by: Thiago Farina <tfransosi@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * tools: turbostat: fix bitwise and operandThomas Renninger2011-02-10
| | | | | | | | | | | | | | | | bug could cause false positive on indicating presence of invarient TSC or APERF support. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* | perf tools: Fix thread_map event synthesizing in top and recordArnaldo Carvalho de Melo2011-02-10
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jeff Moyer reported these messages: Warning: ... trying to fall back to cpu-clock-ticks couldn't open /proc/-1/status couldn't open /proc/-1/maps [ls output] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.008 MB perf.data (~363 samples) ] That lead me and David Ahern to see that something was fishy on the thread synthesizing routines, at least for the case where the workload is started from 'perf record', as -1 is the default for target_tid in 'perf record --tid' parameter, so somehow we were trying to synthesize the PERF_RECORD_MMAP and PERF_RECORD_COMM events for the thread -1, a bug. So I investigated this and noticed that when we introduced support for recording a process and its threads using --pid some bugs were introduced and that the way to fix it was to instead of passing the target_tid to the event synthesizing routines we should better pass the thread_map that has the list of threads for a --pid or just the single thread for a --tid. Checked in the following ways: On a 8-way machine run cyclictest: [root@emilia ~]# perf record cyclictest -a -t -n -p99 -i100 -d50 policy: fifo: loadavg: 0.00 0.13 0.31 2/139 28798 T: 0 (28791) P:99 I:100 C: 25072 Min: 4 Act: 5 Avg: 6 Max: 122 T: 1 (28792) P:98 I:150 C: 16715 Min: 4 Act: 6 Avg: 5 Max: 27 T: 2 (28793) P:97 I:200 C: 12534 Min: 4 Act: 5 Avg: 4 Max: 8 T: 3 (28794) P:96 I:250 C: 10028 Min: 4 Act: 5 Avg: 5 Max: 96 T: 4 (28795) P:95 I:300 C: 8357 Min: 5 Act: 6 Avg: 5 Max: 12 T: 5 (28796) P:94 I:350 C: 7163 Min: 5 Act: 6 Avg: 5 Max: 12 T: 6 (28797) P:93 I:400 C: 6267 Min: 4 Act: 5 Avg: 5 Max: 9 T: 7 (28798) P:92 I:450 C: 5571 Min: 4 Act: 5 Avg: 5 Max: 9 ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.108 MB perf.data (~4719 samples) ] [root@emilia ~]# This will create one extra thread per CPU: [root@emilia ~]# tuna -t cyclictest -CP thread ctxt_switches pid SCHED_ rtpri affinity voluntary nonvoluntary cmd 28825 OTHER 0 0xff 2169 671 cyclictest 28832 FIFO 93 6 52338 1 cyclictest 28833 FIFO 92 7 46524 1 cyclictest 28826 FIFO 99 0 209360 1 cyclictest 28827 FIFO 98 1 139577 1 cyclictest 28828 FIFO 97 2 104686 0 cyclictest 28829 FIFO 96 3 83751 1 cyclictest 28830 FIFO 95 4 69794 1 cyclictest 28831 FIFO 94 5 59825 1 cyclictest [root@emilia ~]# So we should expect only samples for the above 9 threads when using the --dump-raw-trace|-D perf report switch to look at the column with the tid: [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 629 28825 110 28826 491 28827 308 28828 198 28829 621 28830 225 28831 203 28832 89 28833 [root@emilia ~]# So for workloads started by 'perf record' seems to work, now for existing workloads, just run cyclictest first, without 'perf record': [root@emilia ~]# tuna -t cyclictest -CP thread ctxt_switches pid SCHED_ rtpri affinity voluntary nonvoluntary cmd 28859 OTHER 0 0xff 594 200 cyclictest 28864 FIFO 95 4 16587 1 cyclictest 28865 FIFO 94 5 14219 1 cyclictest 28866 FIFO 93 6 12443 0 cyclictest 28867 FIFO 92 7 11062 1 cyclictest 28860 FIFO 99 0 49779 1 cyclictest 28861 FIFO 98 1 33190 1 cyclictest 28862 FIFO 97 2 24895 1 cyclictest 28863 FIFO 96 3 19918 1 cyclictest [root@emilia ~]# and then later did: [root@emilia ~]# perf record --pid 28859 sleep 3 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.027 MB perf.data (~1195 samples) ] [root@emilia ~]# To collect 3 seconds worth of samples for pid 28859 and its children: [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 15 28859 33 28860 19 28861 13 28862 13 28863 10 28864 11 28865 9 28866 255 28867 [root@emilia ~]# Works, last thing is to check if looking at just one of those threads also works: [root@emilia ~]# perf record --tid 28866 sleep 3 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.006 MB perf.data (~242 samples) ] [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 3 28866 [root@emilia ~]# Works too. Reported-by: Jeff Moyer <jmoyer@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf stat: Fix aggreate counter reading accountingArnaldo Carvalho de Melo2011-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduced in: c52b12ed, when this sequence: count[0] = count[1] = count[2] = 0; Was replaced with: aggr->val = 0; Which is equivalent to zeroing just the first entry in the 'count' array. Fix it by zeroing the three entries with: aggr->val = aggr->ena = aggr->run = 0; Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix time function double declaration with glibcThomas Renninger2011-01-22
| | | | | | | | | | | | | | | It's enough to include the local "debug.h" file to trigger it. man time reveals this is already declared in glibc: time - get time in seconds -> rename the variable. Cc: Ingo Molnar <mingo@elte.hu> Cc: arjan@infradead.org LPU-Reference: <1295620209-13859-2-git-send-email-trenn@suse.de> Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix build by checking if extra warnings are supportedArnaldo Carvalho de Melo2011-01-22
| | | | | | | | | | | | | | | | | | | | | The -Wstack-protector and -Wvolatile-register-var warnings, for instance, are not supported by gcc 3.4.6. So fix by doing the same check we already do for -fstack-protector-all. With this and the other patches in this series, perf builds unmodified on, for instance, RHEL4. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix build when using gcc 3.4.6Arnaldo Carvalho de Melo2011-01-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | [acme@localhost linux]$ make O=~acme/git/build/perf -C tools/perf make: Entering directory `/home/acme/git/linux/tools/perf' Makefile:526: No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev Makefile:582: newt not found, disables TUI support. Please install newt-devel or libnewt-dev CC /home/acme/git/build/perf/builtin-annotate.o In file included from builtin-annotate.c:23: util/parse-events.h:26: warning: declaration of 'evsel_list' shadows a global declaration util/parse-events.h:12: warning: shadowed declaration is here make: *** [/home/acme/git/build/perf/builtin-annotate.o] Error 1 make: Leaving directory `/home/acme/git/linux/tools/perf' [acme@localhost linux]$ gcc --version | head -1 gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-11) [acme@localhost linux]$ Fix it by renaming the parameter to evlist. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Add missing header, fixes buildArnaldo Carvalho de Melo2011-01-22
| | | | | | | | | | | | | | | | | | | We need the definiton for __always_inline in bitops.h to fix the build on distros where it isn't available or compiler.h doesn't get included indirectly. One of the fixes needed to build perf on RHEL4 systems, for instance. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix 64 bit integer format stringsArnaldo Carvalho de Melo2011-01-22
| | | | | | | | | | | | | | | | | | | | | | | Using %L[uxd] has issues in some architectures, like on ppc64. Fix it by making our 64 bit integers typedefs of stdint.h types and using PRI[ux]64 like, for instance, git does. Reported by Denis Kirjanov that provided a patch for one case, I went and changed all cases. Reported-by: Denis Kirjanov <dkirjanov@kernel.org> Tested-by: Denis Kirjanov <dkirjanov@kernel.org> LKML-Reference: <20110120093246.GA8031@hera.kernel.org> Cc: Denis Kirjanov <dkirjanov@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Pingtian Han <phan@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix build on older glibcsArnaldo Carvalho de Melo2011-01-22
| | | | | | | | | | | | | | | | Where we don't have CPU_ALLOC & friends. As the tools are being used in older distros where the only allowed change are to replace the kernel, like RHEL4 and 5. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Use cpu_map->[cpu] when setting affinityHan Pingtian2011-01-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When some of CPUs are offline: # cat /sys/devices/system/cpu/online 0,6-31 perf test will fail on #3 testcase: 3: detect open syscall event on all cpus: --- start --- perf_evsel__read_on_cpu: expected to intercept 111 calls on cpu 0, got 681 perf_evsel__read_on_cpu: expected to intercept 112 calls on cpu 1, got 117 perf_evsel__read_on_cpu: expected to intercept 113 calls on cpu 2, got 118 perf_evsel__read_on_cpu: expected to intercept 114 calls on cpu 3, got 119 perf_evsel__read_on_cpu: expected to intercept 115 calls on cpu 4, got 120 perf_evsel__read_on_cpu: expected to intercept 116 calls on cpu 5, got 121 perf_evsel__read_on_cpu: expected to intercept 117 calls on cpu 6, got 122 perf_evsel__read_on_cpu: expected to intercept 118 calls on cpu 7, got 123 perf_evsel__read_on_cpu: expected to intercept 119 calls on cpu 8, got 124 perf_evsel__read_on_cpu: expected to intercept 120 calls on cpu 9, got 125 perf_evsel__read_on_cpu: expected to intercept 121 calls on cpu 10, got 126 .... This patch try to use 'cpus->map[cpu]' when setting cpu affinity, and will check the return code of sched_setaffinity() LKML-Reference: <20110120114707.GA11781@hpt.nay.redhat.com> Signed-off-by: Han Pingtian <phan@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Fix annotation of thumb codeDr. David Alan Gilbert2011-01-21
| | | | | | | | | | | | | | | | | | | | | In ARM's Thumb mode the bottom bit of the symbol address is set to mark the function as Thumb; the instructions are in reality 2 or 4 byte on 2 byte alignments, and when the +1 address is used in annotate it causes objdump to disassemble invalid instructions. The patch removes that bottom bit during symbol loading. Many thinks to Dave Martin for comments on an initial version of the patch. (For reference this corresponds to this bug https://bugs.launchpad.net/linux-linaro/+bug/677547 ) Cc: Ingo Molnar <mingo@elte.hu> Cc: Dave Martin <dave.martin@linaro.org> LKML-Reference: <20110121163922.GA31398@davesworkthinkpad> Signed-off-by: Dr. David Alan Gilbert <david.gilbert@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2011-01-18
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Fix tracepoint id to string perf.data header table perf tools: Fix handling of wildcards in tracepoint event selectors powerpc: perf: Fix frequency calculation for overflowing counters
| * perf tools: Fix tracepoint id to string perf.data header tableArnaldo Carvalho de Melo2011-01-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was broken by f006d25 that passed just the event name, not the complete sys:event that it expected to open the /sys/.../sys/sys:event/id file to get the id. Fix it by moving it to after parse_events in cmd_record, as at that point we can just traverse the evsel_list and use evsel->attr.config + event_name(evsel) instead of re-opening the /id file. Reported-by: Franck Bui-Huu <vagabon.xyz@gmail.com> Cc: Franck Bui-Huu <vagabon.xyz@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Han Pingtian <phan@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <20110117202801.GG2085@ghostprotocols.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix handling of wildcards in tracepoint event selectorsArnaldo Carvalho de Melo2011-01-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It wasn't accounting the ':' when consuming bytes in the the event selector string, so parse_events() would fail in this test: if (!(*str == 0 || *str == ',' || isspace(*str))) return -1; as *str would be pointing to '*', the last character in the '-e' arg in: $ perf record -q -a -D -e sched:sched_* | perf script -i - -s perf-script.py Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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*-. | Merge branches 'core-fixes-for-linus', 'x86-fixes-for-linus', ↵Linus Torvalds2011-01-15
|\ \| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'timers-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: avoid pointless blocked-task warnings rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status rtmutex: Fix comment about why new_owner can be NULL in wake_futex_pi() * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, olpc: Add missing Kconfig dependencies x86, mrst: Set correct APB timer IRQ affinity for secondary cpu x86: tsc: Fix calibration refinement conditionals to avoid divide by zero x86, ia64, acpi: Clean up x86-ism in drivers/acpi/numa.c * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: timekeeping: Make local variables static time: Rename misnamed minsec argument of clocks_calc_mult_shift() * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Remove syscall_exit_fields tracing: Only process module tracepoints once perf record: Add "nodelay" mode, disabled by default perf sched: Fix list of events, dropping unsupported ':r' modifier Revert "perf tools: Emit clearer message for sys_perf_event_open ENOENT return" perf top: Fix annotate segv perf evsel: Fix order of event list deletion
| | * perf record: Add "nodelay" mode, disabled by defaultKirill Smelkov2011-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes there is a need to use perf in "live-log" mode. The problem is, for seldom events, actual info output is largely delayed because perf-record reads sample data in whole pages. So for such scenarious, add flag for perf-record to go in "nodelay" mode. To track e.g. what's going on in icmp_rcv while ping is running Use it with something like this: (1) $ perf probe -L icmp_rcv | grep -U8 '^ *43\>' goto error; } 38 if (!pskb_pull(skb, sizeof(*icmph))) goto error; icmph = icmp_hdr(skb); 43 ICMPMSGIN_INC_STATS_BH(net, icmph->type); /* * 18 is the highest 'known' ICMP type. Anything else is a mystery * * RFC 1122: 3.2.2 Unknown ICMP messages types MUST be silently * discarded. */ 50 if (icmph->type > NR_ICMP_TYPES) goto error; $ perf probe icmp_rcv:43 'type=icmph->type' (2) $ cat trace-icmp.py [...] def trace_begin(): print "in trace_begin" def trace_end(): print "in trace_end" def probe__icmp_rcv(event_name, context, common_cpu, common_secs, common_nsecs, common_pid, common_comm, __probe_ip, type): print_header(event_name, common_cpu, common_secs, common_nsecs, common_pid, common_comm) print "__probe_ip=%u, type=%u\n" % \ (__probe_ip, type), [...] (3) $ perf record -a -D -e probe:icmp_rcv -o - | \ perf script -i - -s trace-icmp.py Thanks to Peter Zijlstra for pointing how to do it. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu>, Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <20110112140613.GA11698@tugrik.mns.mnsspb.ru> Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf sched: Fix list of events, dropping unsupported ':r' modifierStephane Eranian2011-01-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks to me like the :r modifier is not supported anymore, so remove it from the list of events. Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> LKML-Reference: <AANLkTim=jawJyBj0iFd0r4-LCKzvjFW+NddzJMD5GUB9@mail.gmail.com> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * Revert "perf tools: Emit clearer message for sys_perf_event_open ENOENT return"Arnaldo Carvalho de Melo2011-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit aa7bc7ef73efc46d7c3a0e185eefaf85744aec98. It removed the fallback from hardware profiling to software profiling. .e.g., in a VM with no PMU. Reported-by: David Ahern <daahern@cisco.com> Cc: David Ahern <daahern@cisco.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf top: Fix annotate segvArnaldo Carvalho de Melo2011-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before we had sym_counter, it was initialized to zero and we used that as an index in the global attrs variable, now we have a list of evsel entries, and sym_counter became sym_evsel, that remained initialized to zero (NULL): b00m. Fix it by initializing it to the first entry in the evsel list. Bug-introduced: 69aad6f Reported-by: Kirill Smelkov <kirr@mns.spb.ru> Tested-by: Kirill Smelkov <kirr@mns.spb.ru> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Kirill Smelkov <kirr@mns.spb.ru> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * perf evsel: Fix order of event list deletionArnaldo Carvalho de Melo2011-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to defer calling perf_evsel_list__delete() till after atexit registered routines, because we need to traverse the events being recorded at that time at least on 'perf record'. This fixes the problem reported by Thomas Renninger where cmd_record called by cmd_timechart would not write the tracing data to the perf.data file header because the evsel_list at atexit (control+C on 'perf timechart record') time would be empty, being already deleted by run_builtin(), and thus 'perf timechart' when trying to process such perf.data file would die with: "no trace data in the file" Problem introduced in 70d544d. Reported-by: Thomas Renninger <trenn@suse.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | | Merge branch 'tools' of ↵Linus Torvalds2011-01-12
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'tools' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: tools: create power/x86/x86_energy_perf_policy tools: create power/x86/turbostat
| | \ \
| | \ \
| *-. \ \ Merge branches 'turbostat' and 'x86_energy_perf_policy' into toolsLen Brown2011-01-11
| |\ \ \ \
| | | * | | tools: create power/x86/x86_energy_perf_policyLen Brown2011-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MSR_IA32_ENERGY_PERF_BIAS first became available on Westmere Xeon. It is implemented in all Sandy Bridge processors -- mobile, desktop and server. It is expected to become increasingly important in subsequent generations. x86_energy_perf_policy is a user-space utility to set the hardware energy vs performance policy hint in the processor. Most systems would benefit from "x86_energy_perf_policy normal" at system startup, as the hardware default is maximum performance at the expense of energy efficiency. See x86_energy_perf_policy.8 man page for more information. Background: Linux-2.6.36 added "epb" to /proc/cpuinfo to indicate if an x86 processor supports MSR_IA32_ENERGY_PERF_BIAS, without actually modifying the MSR. In March, 2010, Venkatesh Pallipadi proposed a small driver that programmed MSR_IA32_ENERGY_PERF_BIAS, based on the cpufreq governor in use. It also offered a boot-time cmdline option to override. http://lkml.org/lkml/2010/3/4/457 But hiding the hardware policy behind the governor choice was deemed "kinda icky". In June, 2010, I proposed a generic user/kernel API to generalize the power/performance policy trade-off. "RFC: /sys/power/policy_preference" http://lkml.org/lkml/2010/6/16/399 That is my preference for implementing this capability, but I received no support on the list. So in September, 2010, I sent x86_energy_perf_policy.c to LKML, a user-space utility that scribbles directly to the MSR. http://lkml.org/lkml/2010/9/28/246 Here is that same utility, after responding to some review feedback, to live in tools/power/, where it is easily found. Signed-off-by: Len Brown <len.brown@intel.com>
| | * | | | tools: create power/x86/turbostatLen Brown2011-01-11
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | turbostat is a Linux tool to observe proper operation of Intel(R) Turbo Boost Technology. turbostat displays the actual processor frequency on x86 processors that include APERF and MPERF MSRs. Note that turbostat is of limited utility on Linux kernels 2.6.29 and older, as acpi_cpufreq cleared APERF/MPERF up through that release. On Intel Core i3/i5/i7 (Nehalem) and newer processors, turbostat also displays residency in idle power saving states, which are necessary for diagnosing any cpuidle issues that may have an effect on turbo-mode. See the turbostat.8 man page for example usage. Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktestLinus Torvalds2011-01-12
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest: (30 commits) ktest: Ask for the manditory config options instead of just failing ktest: Copy the last good and bad configs in config_bisect ktest: For grub reboot, use run_ssh instead of run_command ktest: Added force stop after success and failure ktest: Parse off the directory name in useconfig for failures ktest: Use different temp config name for minconfig ktest: Updated the sample.conf for the latest options ktest: Added compare script to test ktest.pl to sample.conf ktest: Added config_bisect test type ktest/cleanups: Added version 0.2, ssh as options ktest: Output something easy to parse for failure or success ktest: Allow a test case to undefine a default value ktest: Use $output_config instead of typing $outputdir/.config ktest: Write to stdout if no log file is given ktest: Use oldnoconfig instead of yes command ktest: Update the sample config file with more documentation ktest: New TEST_START instead of using [], and use real SHA1s ktest: Add poweroff after halt and powercycle after reboot ktest: Add POST_INSTALL to allow initrds to be created ktest: Added sample.conf, new %default option format ...
| * | | | | ktest: Ask for the manditory config options instead of just failingSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In keeping with the notion that all tools should be simple for all to use. I've changed ktest.pl to ask for mandatory options instead of just failing. It will append (or create) the options the user types in, onto the config file. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Copy the last good and bad configs in config_bisectSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During the config_bisect, in case of failure, it is nice to have the last good and bad .configs that were used. This would let us restart the config_bisect from those configs. Copy the last good config into the output dir as config_good, and the last bad config as config_bad. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: For grub reboot, use run_ssh instead of run_commandSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The run_ssh handles the ssh variable $SSH_COMMAND, which was not being used by the run_command in reboot_to function. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Added force stop after success and failureSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added the options STOP_AFTER_SUCCESS and STOP_AFTER_FAILURE to allow the user to give a time (in seconds) to stop the monitor after a stack trace or login has been detected. Sometimes the kernel constantly prints out to the console and this may cause the test to run indefinitely. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Parse off the directory name in useconfig for failuresSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we store failures, we create a directory that has the build_type in it. For useconfig, it also contains the name path of the config file it uses. This unfortunately gets its own directory on failure. Parse off the directory name when creating the directory to store the failures. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Use different temp config name for minconfigSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By using the "use_config" for minconfig and addconfig we risk trying to copy itself to itself, which will cause an unexpected failure. Use a different name instead. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Updated the sample.conf for the latest optionsSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added documentation for SSH_EXEC, SCP_TO_TARGET, REBOOT, and CONFIG_BISECT and friends. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Added compare script to test ktest.pl to sample.confSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a compare script that makes sure that all the options in sample.conf are used in ktest.pl, and all the options in ktest.pl are described in sample.conf. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Added config_bisect test typeSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added the ability to do a config_bisect. It starts with a bad config and does the following loop. Enable half the configs. if none of the configs to check are not enabled (caused by missing dependencies) enable the other half. Run the test if the test passes, remove the configs from the check but enabled them for further tests (to satisfy dependencies). else Remove any config that was not enabled, as we have found a new config that can cause a failure. loop till we have only one config left. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest/cleanups: Added version 0.2, ssh as optionsSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Updated to version 0.2. Now have SSH_EXEC options. Also added some cleanups for keeping track of success and reading the config file. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Output something easy to parse for failure or successSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Have a easy way to parse the log file for success or failure. KTEST RESULT: ... Suggested-by: Tim Bird <tim.bird@am.sony.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Allow a test case to undefine a default valueSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow a test case in the config file to undefine a default value by specifying the option and equal sign but not assigning it a value: OPTION = Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Use $output_config instead of typing $outputdir/.configSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To help prevent typos, use $output_config as the reference to "$outputdir/.config". Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Write to stdout if no log file is givenSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If no LOG_FILE option is set, then write what would be logged to that file to standard output. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Use oldnoconfig instead of yes commandSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Running the command "yes ''" through the make oldconfig may enable things we do not want enabled. If something is default enabled, the yes command with '' as an argument will enable it. Use oldnoconfig, which runs everything as if 'no' was used. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Update the sample config file with more documentationSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: New TEST_START instead of using [], and use real SHA1sSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the config to use TEST_START where the options after a TEST_START automatically get the [] as it is read and they do not need to exist in the config file; TEST_START MIN_CONFIG = myconfig is the same as MIN_CONFIG[1] = myconfig The benefit is that you no longer need to keep track of test numbers with tests. Also process the commit ids that are passed to the options to get the actually SHA1 so it is no longer relative to the branch. Ie, saying HEAD will get the current SHA1 and then that will be used, and will work even if another branch is checked out. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | ktest: Add poweroff after halt and powercycle after rebootSteven Rostedt2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added the options POWEROFF_AFTER_HALT to handle boxes that do not really shut off after a halt is called. Added POWERCYCLE_AFTER_REBOOT to force a power cycle for boxes that don't reboot but get stuck during the reboot. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 04:42:40 -0500