Re: callchain ABI change with commit 6cbc304f2f360

2020-05-06 Thread Stephane Eranian
On Wed, May 6, 2020 at 4:37 AM Peter Zijlstra wrote: > > On Tue, May 05, 2020 at 08:37:40PM -0700, Stephane Eranian wrote: > > Hi, > > > > I have received reports from users who have noticed a change of > > behaviour caused by > > commit: > > > > 6cbc304f2f360 ("perf/x86/intel: Fix unwind errors f

Re: callchain ABI change with commit 6cbc304f2f360

2020-05-06 Thread Peter Zijlstra
On Tue, May 05, 2020 at 08:37:40PM -0700, Stephane Eranian wrote: > Hi, > > I have received reports from users who have noticed a change of > behaviour caused by > commit: > > 6cbc304f2f360 ("perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)") > > When using PEBS sampling on Intel proc

callchain ABI change with commit 6cbc304f2f360

2020-05-05 Thread Stephane Eranian
Hi, I have received reports from users who have noticed a change of behaviour caused by commit: 6cbc304f2f360 ("perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)") When using PEBS sampling on Intel processors. Doing simple profiling with: $ perf record -g -e cycles:pp ... Before: 1