netdev - RE: [PATCH] qed: Add and use specific logging functions to reduce object size

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]

Date:	Wed, 27 Jul 2016 07:24:17 +0000
From:	Yuval Mintz <Yuval.Mintz@...gic.com>
To:	Joe Perches <joe@...ches.com>,
	Ariel Elior <Ariel.Elior@...gic.com>,
	Dept-Eng Everest Linux L2 <Dept-EngEverestLinuxL2@...gic.com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: RE: [PATCH] qed: Add and use specific logging functions to reduce
 object size

> Current DP_<LEVEL> macros generate a lot of code.
> Using functions with vsprintf extension %pV helps reduce that size.
> 
>  drivers/net/ethernet/qlogic/qed/Makefile   |  2 +-
>  drivers/net/ethernet/qlogic/qed/qed_util.c | 82
> ++++++++++++++++++++++++++++++
>  include/linux/qed/qed_if.h                 | 60 +++++++++-------------
>  3 files changed, 106 insertions(+), 38 deletions(-)  create mode 100644
> drivers/net/ethernet/qlogic/qed/qed_util.c

This won't compile when CONFIG_QED*=m, as qede can't link to
the new qed_{err, verbose, info, notice} functions.
That was the original reason for putting the macros in the interface
header.

Other alternatives:
- We can EXPORT_SYMBOL() the functions, although we've taken a
strain not adding such to the interface.
 - Code duplication between qed/qede [ugly].
 - Implementing this in qede via the interface functions with qed; 
But the notion of defining an interface between 2 modules passing
va_args seems [to me] like a bad one.

If you have cleaner solutions, I'd be happy to hear those.