linux-kernel - Re: [PATCH 6/6] selftests/sgx: Add a bpftrace script for tracking allocation errors

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Message-ID: <64498c9f-a6e1-6379-ca8e-d751fb239bec@intel.com>
Date:   Tue, 30 Aug 2022 15:57:24 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>, <linux-sgx@...r.kernel.org>
CC:     Haitao Huang <haitao.huang@...ux.intel.com>,
        Vijay Dhanraj <vijay.dhanraj@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "Shuah Khan" <shuah@...nel.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH 6/6] selftests/sgx: Add a bpftrace script for tracking
 allocation errors

Hi Jarkko,

On 8/29/2022 8:12 PM, Jarkko Sakkinen wrote:
> Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
> ---
>  tools/testing/selftests/sgx/alloc-error.bt | 7 +++++++
>  1 file changed, 7 insertions(+)
>  create mode 100644 tools/testing/selftests/sgx/alloc-error.bt
> 
> diff --git a/tools/testing/selftests/sgx/alloc-error.bt b/tools/testing/selftests/sgx/alloc-error.bt
> new file mode 100644
> index 000000000000..9268d50dea29
> --- /dev/null
> +++ b/tools/testing/selftests/sgx/alloc-error.bt
> @@ -0,0 +1,7 @@
> +kr:sgx_alloc_epc_page /(uint64)retval >= (uint64)(-4095)/ {
> +		 printf("sgx_alloc_epc_page: retval=%d\n", (int64)retval);
> +}
> +
> +kr:sgx_encl_page_alloc /(uint64)retval >= (uint64)(-4095)/ {
> +		 printf("sgx_encl_page_alloc: retval=%d\n", (int64)retval);
> +}


Could there be a snippet of comments in this new file to guide users
on how to use this script?

Reinette