linux-kernel - [PATCH v2 0/3] normalize return value of chip->irq_set

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]

Message-Id: <1333039018-3845-1-git-send-email-jiang.liu@huawei.com>
Date:	Fri, 30 Mar 2012 00:36:55 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	Jiang Liu <jiang.liu@...wei.com>, Jiang Liu <liuj97@...il.com>,
	Keping Chen <chenkeping@...wei.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/3] normalize return value of chip->irq_set_affinity() method

On x86 platforms, interrupt controller chip's irq_set_affinity() method
always copies affinity mask to irq_data->affinity field but still returns
0(IRQ_SET_MASK_OK). That return value causes the interrupt core logic
unnecessarily copies the mask to irq_data->affinity field again.
So return IRQ_SET_MASK_OK_NOCOPY instead of IRQ_SET_MASK_OK to get rid of
the duplicated copy operation.

v2: split it into three patches for core, x86 and IA64 according to
    Greg KH's suggestion

Jiang Liu (3):
  IRQ: introduce irq_do_set_affinity() to reduce duplicated code
  IRQ,x86: normalize return value of chip->irq_set_affinity() method
  IRQ,IA64: normalize return value of chip->irq_set_affinity() method

 arch/ia64/kernel/iosapic.c     |    4 +++-
 arch/ia64/kernel/msi_ia64.c    |    4 ++--
 arch/ia64/sn/kernel/irq.c      |    2 +-
 arch/ia64/sn/kernel/msi_sn.c   |    2 +-
 arch/x86/kernel/apic/io_apic.c |   11 ++++++-----
 arch/x86/platform/uv/uv_irq.c  |    2 +-
 kernel/irq/internals.h         |    3 +++
 kernel/irq/manage.c            |   39 ++++++++++++++++++++++-----------------
 kernel/irq/migration.c         |    6 +-----
 9 files changed, 40 insertions(+), 33 deletions(-)

-- 
1.7.5.4

--
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/