linux-kernel - Re: [PATCH v2 1/6] scsi: ufs: Remove stringize operator '#' restriction

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ade665cbfa138d1851343576caad84a61e904c46.camel@perches.com>
Date:   Mon, 14 Dec 2020 08:46:30 -0800
From:   Joe Perches <joe@...ches.com>
To:     Bean Huo <huobean@...il.com>, alim.akhtar@...sung.com,
        avri.altman@....com, asutoshd@...eaurora.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
        cang@...eaurora.org, rostedt@...dmis.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/6] scsi: ufs: Remove stringize operator '#'
 restriction

On Mon, 2020-12-14 at 17:14 +0100, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
> 
> Current EM macro definition, we use stringize operator '#', which turns
> the argument it precedes into a quoted string. Thus requires the symbol
> of __print_symbolic() should be the string corresponding to the name of
> the enum.
> 
> However, we have other cases, the symbol and enum name are not the same,
> we can redefine EM/EMe, but there will introduce some redundant codes.
> This patch is to remove this restriction, let others reuse the current
> EM/EMe definition.

I think the other way (adding new definitions for the cases when the
name and string are different) is less error prone.

> diff --git a/include/trace/events/ufs.h b/include/trace/events/ufs.h
[]
> +#define UFS_LINK_STATES						\
> +	EM(UIC_LINK_OFF_STATE, "UIC_LINK_OFF_STATE")		\
> +	EM(UIC_LINK_ACTIVE_STATE, "UIC_LINK_ACTIVE_STATE,")	\

For instance:

Like here where you added an unnecessary and unwanted comma