On (11/12/13 16:52), Steven Rostedt wrote:
> > On (11/05/13 08:15), Steven Rostedt wrote:
> > > > Hello,
> > > >
> > > > libtraceevent reports ` unknown op '{' ' while processing
> > > > hrtimer_expire_entry event
> > >
> > > Yes, we need to port the plugin code from trace-cmd to handle this and
> > > other cases. It's a known issue.
> > >
> >
> > Hello Steven,
> > sorry if I'm bothering you with already known issue.
> >
> > I cloned trace-cmd from
> > git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
> >
> > and there seems to be problems with hrtimer events format.
> >
> > # ./trace-cmd check-events
> > trace-cmd: No such file or directory
>
> Do a make install, or copy all the *.so files into ~/.trace-cmd/plugins/
> and that will go away.
>
oh... thanks a lot!
I just quickly went through http://lwn.net/Articles/341902/
(' Just download it, go into the directory and run "make" ')
thank you once again!
-ss
> -- Steve
>
> > bad op token {
> > bad op token {
> > bad op token {
> > bad op token {
> > function is_writable_pte not defined
> > function scsi_trace_parse_cdb not defined
> > function scsi_trace_parse_cdb not defined
> > function scsi_trace_parse_cdb not defined
> > function scsi_trace_parse_cdb not defined
> > function jiffies_to_msecs not defined
> > function jiffies_to_msecs not defined
> > unknown op '{'
> > unknown op '{'
> >
> >
> > trivial strace-ing shows that 'unknown op' comes from hrtimer_expire_entry
> >
> > stat("/sys/kernel/debug/tracing/events/timer/hrtimer_expire_entry/format",
> > {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
> > open("/sys/kernel/debug/tracing/events/timer/hrtimer_expire_entry/format",
> > O_RDONLY) = 5
> > read(5, "name: hrtimer_expire_entry\nID: 9"..., 8192) = 577
> > read(5, "", 8192) = 0
> > close(5) = 0
> > write(2, " ", 2) = 2
> > write(2, "unknown op '{'", 14) = 14
> > write(2, "\n", 1) = 1
> >
> >
> > ./trace-cmd record -e timer ls /bin
> > ./trace-cmd report
> >
> > kworker/1:0-3925 [001] 1626.266585: hrtimer_cancel:
> > hrtimer=0xffff880157c8df80
> > X-2175 [000] 1626.266585: hrtimer_cancel:
> > hrtimer=0xffff880157c0df80
> > X-2175 [000] 1626.266586: hrtimer_expire_entry: [FAILED TO
> > PARSE] hrtimer=0xffff880157c0df80 now=1625348004324
> > function=0xffffffff810cadf0
> > kworker/1:0-3925 [001] 1626.266586: hrtimer_expire_entry: [FAILED TO
> > PARSE] hrtimer=0xffff880157c8df80 now=1625348004320
> > function=0xffffffff810cadf0
> > kworker/1:0-3925 [001] 1626.266591: hrtimer_expire_exit:
> > hrtimer=0xffff880157c8df80
> > kworker/1:0-3925 [001] 1626.266592: hrtimer_start: [FAILED TO
> > PARSE] hrtimer=0xffff880157c8df80 function=0xffffffff810cadf0
> > expires=1625352000000 softexpires=1625352000000
> > X-2175 [000] 1626.266593: hrtimer_expire_exit:
> > hrtimer=0xffff880157c0df80
> > X-2175 [000] 1626.266594: hrtimer_start: [FAILED TO
> > PARSE] hrtimer=0xffff880157c0df80 function=0xffffffff810cadf0
> > expires=1625352000000 softexpires=1625352000000
> > kworker/1:0-3925 [001] 1626.266596: timer_cancel:
> > timer=0xffff880157c8ff28
> > kworker/1:0-3925 [001] 1626.266598: timer_expire_entry:
> > timer=0xffff880157c8ff28 function=delayed_work_timer_fn now=4295298633
> > X-2175 [000] 1626.266599: timer_cancel:
> > timer=0xffff880157c0ff28
> > X-2175 [000] 1626.266599: timer_expire_entry:
> > timer=0xffff880157c0ff28 function=delayed_work_timer_fn now=4295298633
> >
> > thank you,
> >
> > -ss
> >
> >
> > > -- Steve
> > >
> > > >
> > > > cat /sys/kernel/debug/tracing/events/timer/hrtimer_expire_entry/format
> > > >
> > > > name: hrtimer_expire_entry
> > > > ID: 91
> > > > format:
> > > > field:unsigned short common_type; offset:0; size:2;
> > > > signed:0;
> > > > field:unsigned char common_flags; offset:2; size:1;
> > > > signed:0;
> > > > field:unsigned char common_preempt_count; offset:3;
> > > > size:1; signed:0;
> > > > field:int common_pid; offset:4; size:4; signed:1;
> > > >
> > > > field:void * hrtimer; offset:8; size:8; signed:0;
> > > > field:s64 now; offset:16; size:8; signed:1;
> > > > field:void * function; offset:24; size:8; signed:0;
> > > >
> > > > print fmt: "hrtimer=%p function=%pf now=%llu", REC->hrtimer,
> > > > REC->function, (unsigned long long)(((ktime_t) { .tv64 = REC->now
> > > > }).tv64)
> > > >
> > > >
> > > > -ss
> > >
>
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