Em Wed, Oct 26, 2016 at 10:46:18AM +0200, Peter Zijlstra escreveu: > On Wed, Oct 26, 2016 at 01:51:58AM +0200, Alexis Berlemont wrote: > > Hi, > > > > Here are 2 small patches which try to fulfill a point in the perf todo > > list: > > There's a todo list?
https://perf.wiki.kernel.org/index.php/Todo > > * Forward port the page fault tracepoints and use it in 'trace'. > > http://git.kernel.org/?p=linux/kernel/git/acme/linux.git;a=commitdiff;h=d53b11976093b6d8afeb8181db53aaffc754920d;hp=32ba4abf60ae1b710d22a75725491815de649bc5 > > dead link I guess this is the one: http://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/commit/?id=eea86c6e06c241667c96c8e87e43c0870e1d6285 author Frederic Weisbecker <fweis...@gmail.com> 2010-11-12 04:35:06 (GMT) committer Ingo Molnar <mi...@elte.hu> 2011-05-07 16:10:43 (GMT) commit eea86c6e06c241667c96c8e87e43c0870e1d6285 (patch) tree b00ce7ef9a6219f4df6b0e1ffe453d2d5baf3593 parent 57d524154ffe99d27fb55e0e30ddbad9f4c35806 (diff) perf, mm: Add fault tracing Part of that are two modified patches from Jiri Olsa who added the fault tracepoints. I had to split them in two tracepoints so that we get the faults handling duration. Originally-from: Frederic Weisbecker <fweis...@gmail.com> Signed-off-by: Thomas Gleixner <t...@linutronix.de> Signed-off-by: Ingo Molnar <mi...@elte.hu> -------------------- After that entry was added to the todo we got --pf, but no duration: [root@jouet ~]# perf trace --pf maj --no-syscalls 0.000 ( 0.000 ms): perf/20412 majfault [__memcmp_sse4_1+0xbc6] => 0x7f1e0010c000 (?.) 1.156 ( 0.000 ms): perf/20412 majfault [__memcmp_sse4_1+0xbc6] => /usr/bin/mv@0x0 (d.) 56.907 ( 0.000 ms): perf/20412 majfault [__memcpy_avx_unaligned+0x1e7] => /usr/bin/mv@0x207a0 (d.) 57.683 ( 0.000 ms): perf/20412 majfault [__memcmp_sse4_1+0xbc6] => /usr/lib/debug/usr/bin/mv.debug@0x0 (d.) 60.916 ( 0.000 ms): perf/20412 majfault [__memcpy_avx_unaligned+0x2b6] => /usr/lib/debug/usr/bin/mv.debug@0x6ace0 (d.) 18446744073708.766 ( 0.000 ms): systemd-journa/578 majfault [0x14972] => 0x7f25bdd9ebd0 (?.) 70.193 ( 0.000 ms): perf/20412 majfault [__memcmp_sse4_1+0xbc6] => /usr/lib/debug/usr/lib/systemd/systemd-journald.debug@0x0 (d.) 71.176 ( 0.000 ms): perf/20412 majfault [__memcpy_avx_unaligned+0x2b6] => /usr/lib/debug/usr/lib/systemd/systemd-journald.debug@0x1221e0 (d.) ^C[root@jouet ~]# trace -h --pf Usage: perf trace [<options>] [<command>] or: perf trace [<options>] -- <command> [<options>] or: perf trace record [<options>] [<command>] or: perf trace record [<options>] -- <command> [<options>] -F, --pf <all|maj|min> Trace pagefaults [root@jouet ~]#
