linux-kernel - Re: [PATCH v3 07/16] selftests/resctrl: Cleanup bm

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Date: Wed, 24 Apr 2024 21:37:26 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	<linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>, Babu Moger
	<babu.moger@....com>, Maciej Wieczór-Retman
	<maciej.wieczor-retman@...el.com>
CC: Fenghua Yu <fenghua.yu@...el.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 07/16] selftests/resctrl: Cleanup bm_pid and ppid usage
 & limit scope

Hi Ilpo,

On 4/8/2024 9:32 AM, Ilpo Järvinen wrote:
> 'bm_pid' and 'ppid' are global variables. As they are used by different
> processes and in signal handler, they cannot be entirely converted into
> local variables.
> 
> The scope of those variables can still be reduced into resctrl_val.c
> only. As PARENT_EXIT() macro is using 'ppid', make it a function in
> resctrl_val.c and pass ppid to it as an argument because it is easier
> to understand than using the global variable directly.
> 
> Pass 'bm_pid' into measure_val() instead of relying on the global
> variable which helps to make the call signatures of measure_val() and
> measure_llc_resctrl() more similar to each other.

nitpick: measure_val() -> measure_vals()  (two instances above and
also in the changelog of next patch)

> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> ---

Reinette