On Thu, Apr 13, 2017 at 11:25:39AM +0800, Jin, Yao wrote:
SNIP
> >
> > Now it works without my patch and it runs with latest perf/core branch.
> > So it looks like a regression issue.
> >
> > Thanks
> > Jin Yao
> >
> >
>
> I have tested, the regression issue is happened after this commit:
>
On 4/13/2017 10:00 AM, Jin, Yao wrote:
On 4/12/2017 6:58 PM, Jiri Olsa wrote:
On Wed, Apr 12, 2017 at 06:21:01AM +0800, Jin Yao wrote:
SNIP
3. Use 2 bits in perf_branch_entry for a "cross" metrics checking
for branch cross 4K or 2M area. It's an approximate computing
for checking
On 4/12/2017 6:58 PM, Jiri Olsa wrote:
On Wed, Apr 12, 2017 at 06:21:01AM +0800, Jin Yao wrote:
SNIP
3. Use 2 bits in perf_branch_entry for a "cross" metrics checking
for branch cross 4K or 2M area. It's an approximate computing
for checking if the branch cross 4K page or 2MB page.
On Wed, Apr 12, 2017 at 11:42:44PM +0800, Jin, Yao wrote:
>
>
> On 4/12/2017 10:26 PM, Jiri Olsa wrote:
> > On Wed, Apr 12, 2017 at 08:25:34PM +0800, Jin, Yao wrote:
> >
> > SNIP
> >
> > > > # Overhead Command Source Shared Object Source Symbol
> > > > Target Symb
On 4/12/2017 10:26 PM, Jiri Olsa wrote:
On Wed, Apr 12, 2017 at 08:25:34PM +0800, Jin, Yao wrote:
SNIP
# Overhead Command Source Shared Object Source Symbol
Target SymbolBasic Block Cycles
# ...
On Wed, Apr 12, 2017 at 08:25:34PM +0800, Jin, Yao wrote:
SNIP
> > # Overhead Command Source Shared Object Source Symbol
> > Target SymbolBasic Block Cycles
> > # ...
> > .
On 4/12/2017 6:58 PM, Jiri Olsa wrote:
On Wed, Apr 12, 2017 at 06:21:01AM +0800, Jin Yao wrote:
SNIP
3. Use 2 bits in perf_branch_entry for a "cross" metrics checking
for branch cross 4K or 2M area. It's an approximate computing
for checking if the branch cross 4K page or 2MB page.
On Wed, Apr 12, 2017 at 06:21:01AM +0800, Jin Yao wrote:
SNIP
>
> 3. Use 2 bits in perf_branch_entry for a "cross" metrics checking
>for branch cross 4K or 2M area. It's an approximate computing
>for checking if the branch cross 4K page or 2MB page.
>
> For example:
>
> perf record -g
v4:
---
1. Describe the major changes in patch description.
Thanks for Peter Zijlstra's reminding.
2. Initialize branch type to 0 in intel_pmu_lbr_read_32 and
intel_pmu_lbr_read_64. Remove the invalid else code in
intel_pmu_lbr_filter.
v3:
---
1. Move the JCC forward/backward and cross
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