linux-kernel - strange code in include/linux/kernel

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-next>] [day] [month] [year] [list]

Date:	Fri, 27 Mar 2009 12:09:35 +0200
From:	Dmitri Vorobiev <dmitri.vorobiev@...ial.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: strange code in include/linux/kernel_stat.h

Hi,

Depending on whether the CONFIG_GENERIC_HARDIRQS option is enabled or not, the header file include/linux/kernel_stat.h defines the following two entities:

- the macro kstat_irqs_this_cpu for the case when CONFIG_GENERIC_HARDIRQS is set:

#define kstat_irqs_this_cpu(DESC) \
        ((DESC)->kstat_irqs[smp_processor_id()])

- another macro with the same name as the macro above but for the case CONFIG_GENERIC_HARDIRQS is not set:

#define kstat_irqs_this_cpu(irq) \
        (kstat_this_cpu.irqs[irq])

Apparently, it is assumed that the types for the macro argument are different, and depend on the value of CONFIG_GENERIC_HARDIRQS. Is this intentional?

Thanks,
Dmitri

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/