Messages in this thread | | | Date | Sat, 3 Mar 2012 12:19:12 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: perf_guest default bug |
| |
Em Sat, Mar 03, 2012 at 11:04:05AM -0300, Arnaldo Carvalho de Melo escreveu: > Em Fri, Mar 02, 2012 at 12:00:01PM -0700, David Ahern escreveu: > > Similar to my last email, this patch is not in urgent trees or > > Linus' yet the problem exists in Linus' tree: > > https://lkml.org/lkml/2012/2/17/82 > > > > $ /tmp/pbuild/perf record -a -- sleep 1 > > [ perf record: Woken up 1 times to write data ] > > [ perf record: Captured and wrote 0.319 MB perf.data (~13935 samples) ] > > Segmentation fault > > > > Root cause is the perf_guest setting. > > > > $ /tmp/pbuild/perf --version > > perf version 3.3.rc5.60.g203738 > > This one was tricky, IIRC, weren't follow up patches needed to plug some > extra problems?
Yeah, just trying cherry picking it and trying it on an RHEL6.2 kernel and it didn't work because older kernels don't have attr.exclude_{guest,host}, so I had to also cherrypick:
[acme@sandy linux]$ git cherry-pick 0c9781280fb672ca09c997df3f14ba506bbdb977 Finished one cherry-pick. [perf/urgent b5f81a4] perf tools: Handle kernels that don't support attr.exclude_{guest,host}
- Arnaldo
| |