Em Tue, Apr 17, 2018 at 12:57:23PM -0400, Steven Rostedt escreveu: > On Tue, 17 Apr 2018 12:40:19 -0400 > Steven Rostedt <[email protected]> wrote: > > > On Tue, 17 Apr 2018 13:35:27 -0300 > > Arnaldo Carvalho de Melo <[email protected]> wrote: > > > > > > > [root@jouet ~]# perf test openat > > > 2: Detect openat syscall event : Ok > > > 3: Detect openat syscall event on all cpus : Ok > > > 15: syscalls:sys_enter_openat event fields : Ok > > > [root@jouet ~]# > > > > > > [root@jouet ~]# perf trace -e nanosleep,syscalls:*nanosleep sleep 1 > > > 0.000 ( ): syscalls:sys_enter_nanosleep:rqtp: > > > 0x7ffd9f737950, rmtp: 0x00000000 > > > 0.009 ( ): sleep/7905 nanosleep(rqtp: 0x7ffd9f737950 > > > ) ... > > > 1000.204 ( ): syscalls:sys_exit_nanosleep:0x0 > > > 0.009 (1000.217 ms): sleep/7905 ... [continued]: nanosleep()) = 0 > > > [root@jouet ~]# > > > > > > Works, so the regression seems to be fixed, without looking at the code > > > that much: > > > > > > Tested-by: Arnaldo Carvalho de Melo <[email protected]> > > > > But does this still work on x86_32? I'll test that out. Thanks for > > testing, but I may have another patch soon. > > OK, it's still broken there with this patch. I got this: > > # ls /sys/kernel/tracing/events/syscalls > enable > filter > sys_enter_nanosleep > sys_exit_nanosleep > > But with this: > > return !strcmp(sym + 9, name + 3) || !strcmp(sym + 3, name + 3); > > I get all the syscalls back. I'll make another patch.
[root@jouet ~]# ls -lad /e/syscalls/sys_enter_* | wc -l 299 [root@jouet ~]# ls -lad /e/syscalls/sys_* | wc -l 598 [root@jouet ~]# uname -a Linux jouet 4.17.0-rc1-00025-g69dd313cd795 #11 SMP Tue Apr 17 13:18:44 -03 2018 x86_64 x86_64 x86_64 GNU/Linux [root@jouet ~]# With your first patch, I'll change to the above... - Arnaldo
