linux-kernel - Re: [PATCH V3] testing/selftests/mqueue: Fix mq_perf

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Date:   Fri, 8 Apr 2022 12:30:23 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, shuah@...nel.org,
        linux-kselftest@...r.kernel.org, disgoel@...ux.vnet.ibm.com
Cc:     acme@...nel.org, jolsa@...nel.org, mpe@...erman.id.au,
        linux-perf-users@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, maddy@...ux.vnet.ibm.com,
        kjain@...ux.ibm.com, srikar@...ux.vnet.ibm.com,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH V3] testing/selftests/mqueue: Fix mq_perf_tests to free
 the allocated cpu set

On 4/8/22 1:24 AM, Athira Rajeev wrote:
> The selftest "mqueue/mq_perf_tests.c" use CPU_ALLOC to allocate
> CPU set. This cpu set is used further in pthread_attr_setaffinity_np
> and by pthread_create in the code. But in current code, allocated
> cpu set is not freed.
> 
> Fix this issue by adding CPU_FREE in the "shutdown" function which
> is called in most of the error/exit path for the cleanup. There are
> few error paths which exit without using shutdown. Add a common goto
> error path with CPU_FREE for these cases.
> 
> Fixes: 7820b0715b6f ("tools/selftests: add mq_perf_tests")
> Signed-off-by: Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
> ---
> Changelog:
>   From v2 -> v3:
>    Addressed review comment from Shuah Khan to add
>    common "goto" error path with CPU_FREE for few exit
>    cases.
>   From v1 -> v2:
>    Addressed review comment from Shuah Khan to add
>    CPU_FREE in other exit paths where it is needed
> 

Thank you. I will queue this up for Linux 5.18-rc3

thanks,
-- Shuah