On Wed, Aug 29, 2012 at 5:02 PM, William Cohen <wco...@redhat.com> wrote: > On 08/29/2012 06:28 AM, stephane eranian wrote: >> On Tue, Aug 28, 2012 at 4:45 PM, William Cohen <wco...@redhat.com> wrote: > >>> Hi Stephane, >>> >>> Thanks so much for the fresh libpfm-4.3.0 release. I just built a version >>> for fedora rawhide at: >>> >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=350950 >>> >>> I ran ./libpfm-4.3.0/tests/validate on a fedora 17 Intel Ivy bridge and AMD >>> family 10H machine. The tests all listed as pass with the exception of the >>> following for Intel Ivy Bridge: >>> >>> checking perf (120 events): pmu: perf event80: sunrpc :: numasks >>> too big (<8) >>> Failed >>> >>> And the following for AMD family 10H: >>> >>> checking perf (119 events): pmu: perf event85: sunrpc :: numasks >>> too big (<8) >>> Failed >>> >> Weird, because I don't see that running on my Ubuntu distro. >> The sunrpc word looks suspicous to me. I don't think there is an event >> or umask with that name. > > Hi Stephane, > > libpfm is using the enumeration for perf to find out which events are > avilable on the machine. It looks like the first tracepoint event listed from > "perf list" is" > > sunrpc:rpc_call_status [Tracepoint event] > > Are the fields for sunrpc correct? > > (gdb) print perf_pe[80] > $10 = {name = 0x6aa4a0 "sunrpc", desc = 0x41a519 "tracepoint", equiv = 0x0, > id = 0, modmsk = 0, type = 2, numasks = 8, ngrp = 1, > umask_ovfl_idx = 18446744073709551615, umasks = {{ > uname = 0x6aa4c0 "rpc_call_status", udesc = 0x6aa4c0 "rpc_call_status", > uid = 1037, uflags = 0, grpid = 0}, {uname = 0x6aa4e0 "rpc_bind_status", > udesc = 0x6aa4e0 "rpc_bind_status", uid = 1036, uflags = 0, grpid = 0}, > { > uname = 0x6aa500 "rpc_connect_status", > udesc = 0x6aa500 "rpc_connect_status", uid = 1035, uflags = 0, > grpid = 0}, {uname = 0x6aa520 "rpc_task_begin", > udesc = 0x6aa520 "rpc_task_begin", uid = 1034, uflags = 0, grpid = 0}, { > uname = 0x6aa540 "rpc_task_run_action", > udesc = 0x6aa540 "rpc_task_run_action", uid = 1033, uflags = 0, > grpid = 0}, {uname = 0x6aa560 "rpc_task_complete", > udesc = 0x6aa560 "rpc_task_complete", uid = 1032, uflags = 0, > grpid = 0}, {uname = 0x6aa580 "rpc_task_sleep", > udesc = 0x6aa580 "rpc_task_sleep", uid = 1031, uflags = 0, grpid = 0}, { > uname = 0x6aa5a0 "rpc_task_wakeup", udesc = 0x6aa5a0 "rpc_task_wakeup", > uid = 1030, uflags = 0, grpid = 0}}} > > It looks like perf_pe[80].umask_ovfl_idx should be 0 like the later entries. > Ok, I know what I did not catch that. You need to run as root to be able to parse /sys/kernel/debug AND you need to have the sunrpc code builtin or module loaded. I had neither of those two. Let me fix this.
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