Em Tue, Mar 01, 2016 at 03:20:35PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Tue, Mar 01, 2016 at 12:59:21PM -0300, Arnaldo Carvalho de Melo escreveu: > > Anyway, 'strace' shows the 4 pairs of mmaps, but it still doesn't work, > > rebooting: > > After I reboot, all works: > > [root@jouet ~]# perf record -e intel_pt//u -a sleep 0.001 > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 1.119 MB perf.data ] > [root@jouet ~]# perf script | head -10 > perf 3797 [002] 8136.590828: 1 branches:u: 0 [unknown] > ([unknown]) => 7fcb3f240707 __GI___ioctl (/usr/lib64/libc-2.22.so) > perf 3797 [002] 8136.590828: 1 branches:u: 7fcb3f24070f __GI___ioctl > (/usr/lib64/libc-2.22.so) => 497e56 perf_evsel__enable > (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 497e58 perf_evsel__enable > (/home/acme/bin/perf) => 497e20 perf_evsel__enable (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 497e27 perf_evsel__enable > (/home/acme/bin/perf) => 497e80 perf_evsel__enable (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 497e87 perf_evsel__enable > (/home/acme/bin/perf) => 497e14 perf_evsel__enable (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 497e1b perf_evsel__enable > (/home/acme/bin/perf) => 497e29 perf_evsel__enable (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 497e51 perf_evsel__enable > (/home/acme/bin/perf) => 421d00 ioctl@plt (/home/acme/bin/perf) > perf 3797 [002] 8136.590828: 1 branches:u: 421d00 ioctl@plt > (/home/acme/bin/perf) => 7fcb3f240700 __GI___ioctl (/usr/lib64/libc-2.22.so) > perf 3797 [002] 8136.590828: 1 branches:u: 7fcb3f240705 __GI___ioctl > (/usr/lib64/libc-2.22.so) => 0 [unknown] ([unknown]) > perf 3797 [002] 8136.590834: 1 branches:u: 0 [unknown] > ([unknown]) => 7fcb3f240707 __GI___ioctl (/usr/lib64/libc-2.22.so) > [root@jouet ~]# > [root@jouet ~]# perf report -D | tail -20 > . 0020: 00 00 00 00 00 00 00 00 07 14 b9 72 66 07 00 00 ...........rf... > . 0030: 03 00 00 00 00 00 00 00 1e 00 00 00 00 00 00 00 ................ > > 3 8136592790535 0x11e688 [0x40]: PERF_RECORD_AUX offset: 0x28 size: 0x28 > flags: 0 [] > > Aggregated stats: (excludes AUX area (e.g. instruction trace) decoded / > synthesized events) > TOTAL events: 8859 > MMAP events: 120 > COMM events: 509 > EXIT events: 1 > FORK events: 507 > MMAP2 events: 7673 > AUX events: 8 > ITRACE_START events: 4 > SWITCH_CPU_WIDE events: 26 > FINISHED_ROUND events: 2 > AUXTRACE_INFO events: 1 > AUXTRACE events: 8 > intel_pt//u stats: > dummy:u stats: > [root@jouet ~]# > > Trying a suspend/resume now...
Scrap that theory, it still works after two suspend/resume cycles :-\ - ARnaldo
