Short patch series to address some kernel issues with the AMD LBrv2
enablement which were introduced in Linux 6.0.

Stephane Eranian (2):
  perf/x86/utils: fix uninitialized var in get_branch_type()
  perf/x86/amd/lbr: adjust LBR regardless of filtering

 arch/x86/events/amd/lbr.c | 8 ++++++--
 arch/x86/events/utils.c   | 4 ++++
 2 files changed, 10 insertions(+), 2 deletions(-)

-- 
2.37.3.998.g577e59143f-goog

On Wed, Sep 28, 2022 at 11:40:41AM -0700, Stephane Eranian wrote:
> Short patch series to address some kernel issues with the AMD LBrv2
> enablement which were introduced in Linux 6.0.
> 
> Stephane Eranian (2):
>   perf/x86/utils: fix uninitialized var in get_branch_type()
>   perf/x86/amd/lbr: adjust LBR regardless of filtering
> 
>  arch/x86/events/amd/lbr.c | 8 ++++++--
>  arch/x86/events/utils.c   | 4 ++++
>  2 files changed, 10 insertions(+), 2 deletions(-)

If you want this in perf/urgent you're missing Fixes tags.

On 9/29/2022 1:44 PM, Peter Zijlstra wrote:
> On Wed, Sep 28, 2022 at 11:40:41AM -0700, Stephane Eranian wrote:
>> Short patch series to address some kernel issues with the AMD LBrv2
>> enablement which were introduced in Linux 6.0.
>>
>> Stephane Eranian (2):
>>   perf/x86/utils: fix uninitialized var in get_branch_type()
>>   perf/x86/amd/lbr: adjust LBR regardless of filtering
>>
>>  arch/x86/events/amd/lbr.c | 8 ++++++--
>>  arch/x86/events/utils.c   | 4 ++++
>>  2 files changed, 10 insertions(+), 2 deletions(-)
> 
> If you want this in perf/urgent you're missing Fixes tags.

That would be:

Fixes: df3e9612f758 ("perf/x86: Make branch classifier fusion-aware")

and 

Fixes: 245268c19f70 ("perf/x86/amd/lbr: Use fusion-aware branch classifier")

for the 1st and 2nd patch respectively.


- Sandipan

On Thu, Sep 29, 2022 at 02:00:07PM +0530, Sandipan Das wrote:
> On 9/29/2022 1:44 PM, Peter Zijlstra wrote:
> > On Wed, Sep 28, 2022 at 11:40:41AM -0700, Stephane Eranian wrote:
> >> Short patch series to address some kernel issues with the AMD LBrv2
> >> enablement which were introduced in Linux 6.0.
> >>
> >> Stephane Eranian (2):
> >>   perf/x86/utils: fix uninitialized var in get_branch_type()
> >>   perf/x86/amd/lbr: adjust LBR regardless of filtering
> >>
> >>  arch/x86/events/amd/lbr.c | 8 ++++++--
> >>  arch/x86/events/utils.c   | 4 ++++
> >>  2 files changed, 10 insertions(+), 2 deletions(-)
> > 
> > If you want this in perf/urgent you're missing Fixes tags.
> 
> That would be:
> 
> Fixes: df3e9612f758 ("perf/x86: Make branch classifier fusion-aware")
> 
> and 
> 
> Fixes: 245268c19f70 ("perf/x86/amd/lbr: Use fusion-aware branch classifier")
> 
> for the 1st and 2nd patch respectively.

Thanks; but trying to queue then in /urgent resulted in me finding out
they're not at all slated for 6.0. The AMD LBRv2 stuff is in perf/core,
waiting for 6.1 to start. So I'll just go queue them there.

Still, good to have Fixes tags on them.