linux-kernel - Re: [PATCH v4 4/4] perf test amd ibs: Add sample period unit test

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Message-ID: <aBImI03VHeJSGVfn@x1>
Date: Wed, 30 Apr 2025 10:31:15 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ravi Bangoria <ravi.bangoria@....com>
Cc: Ingo Molnar <mingo@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Joe Mario <jmario@...hat.com>,
	Stephane Eranian <eranian@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Santosh Shukla <santosh.shukla@....com>,
	Ananth Narayan <ananth.narayan@....com>,
	Sandipan Das <sandipan.das@....com>
Subject: Re: [PATCH v4 4/4] perf test amd ibs: Add sample period unit test

On Wed, Apr 30, 2025 at 10:06:33AM -0300, Arnaldo Carvalho de Melo wrote:
> On Wed, Apr 30, 2025 at 02:32:12PM +0530, Ravi Bangoria wrote:
> > On 30-Apr-25 6:52 AM, Arnaldo Carvalho de Melo wrote:
> > > On Tue, Apr 29, 2025 at 10:13:53PM -0300, Arnaldo Carvalho de Melo wrote:
> > >> Adding the patch below cures it, still need to test on a Zen 5 system.
> 
> > >> These issues were just in the regression test.
>  
> > > BTW, all is at the tmp.perf-tools-next branch at:
>  
> > > https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git
> 
> > I tested with few simple perf mem/c2c commands and it seems to be working
> > fine.
> 
> Thanks for checking!
> 

BTW:

root@...ber:/home/acme/git/linux# perf test -vvv ibs
 73: AMD IBS via core pmu:
--- start ---
test child forked, pid 10047
Using CPUID AuthenticAMD-26-44-0
type: 0x0, config: 0x0, fd: 3  -  Pass
type: 0x0, config: 0x1, fd: -1  -  Pass
type: 0x4, config: 0x76, fd: 3  -  Pass
type: 0x4, config: 0xc1, fd: 3  -  Pass
type: 0x4, config: 0x12, fd: -1  -  Pass
---- end(0) ----
 73: AMD IBS via core pmu                                            : Ok
root@...ber:/home/acme/git/linux#

- Arnaldo