linux-kernel - Re: [PATCH v7] perf test: Introduce script for Arm CoreSight testing

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Message-ID: <6333f002-1213-0e20-0fcc-b3bfc0723b97@arm.com>
Date:   Mon, 7 Sep 2020 15:10:37 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     leo.yan@...aro.org, acme@...nel.org, mathieu.poirier@...aro.org,
        mike.leach@...aro.org, peterz@...radead.org, mingo@...hat.com,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7] perf test: Introduce script for Arm CoreSight testing

On 09/07/2020 02:01 PM, Leo Yan wrote:
> We need a simple method to test Perf with Arm CoreSight drivers, this
> could be used for smoke testing when new patch is coming for perf or
> CoreSight drivers, and we also can use the test to confirm if the
> CoreSight has been enabled successfully on new platforms.
> 
> This patch introduces the shell script test_arm_coresight.sh which is
> under the 'pert test' framework.  This script provides three testing
> scenarios:

...

> Below is detailed usage for it:
> 
>    # cd $linux/tools/perf  -> This is important so can use shell script
>    # perf test list
>      [...]
>      70: probe libc's inet_pton & backtrace it with ping
>      71: Check Arm CoreSight trace data recording and synthesized samples
>      72: Check open filename arg using perf trace + vfs_getname
>      73: Zstd perf.data compression/decompression
>      74: Add vfs_getname probe to get syscall args filenames
>      75: Use vfs_getname probe to get syscall args filenames
> 
>    # perf test 71
>      71: Check Arm CoreSight trace data recording and branch samples: Ok
> 
> Signed-off-by: Leo Yan <leo.yan@...aro.org>

Leo,

Thank you so much for testcase !

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>