From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Mike Travis <travis@sgi.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: RFC [PATCH] x86: introduce nr_irqs for 64bit
Date: Wed, 30 Jul 2008 12:09:26 +0200 [thread overview]
Message-ID: <20080730100926.GA10431@elte.hu> (raw)
In-Reply-To: <200807292138.41720.yhlu.kernel@gmail.com>
* Yinghai Lu <yhlu.kernel@gmail.com> wrote:
> add DEFINE_DYN_ARRAY for dynamical array support
>
> todo:
> 1. convert x86 32bit and other arch
> 2. nr_irqs auto probe via acpi_oem_check?
>
> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
wonderful!
I have one main structural suggestion: could we please keep the NR_IRQS
name, and just change it to dynamic on x86? NR_IRQS is used in 540
places in the kernel, there's no point in touching all that code.
Also add an CONFIG_ARCH_HAS_DYNAMIC_NR_IRQS switch, define it in
arch/x86/Kconfig and use it in include/linux/irq.h.
This will create far less migration pain than the widespread rename.
That will also solve the "what about the other architectures" question.
Ingo
next prev parent reply other threads:[~2008-07-30 10:09 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-29 21:14 [PATCH] x86: 64bit support more than 256 irq v2 Yinghai Lu
2008-07-29 22:16 ` Yinghai Lu
2008-07-29 23:22 ` Eric W. Biederman
2008-07-30 4:38 ` RFC [PATCH] x86: introduce nr_irqs for 64bit Yinghai Lu
2008-07-30 10:09 ` Ingo Molnar [this message]
2008-07-30 10:16 ` Yinghai Lu
2008-07-30 12:58 ` Mike Travis
2008-07-30 10:11 ` [PATCH] x86: introduce nr_irqs for 64bit v2 Yinghai Lu
2008-07-30 19:10 ` [PATCH 0/7] dyn_array support Yinghai Lu
2008-07-30 19:13 ` [PATCH 2/7] x86: introduce nr_irqs for 64bit v3 Yinghai Lu
2008-07-30 19:16 ` [PATCH 5/7] pci: make irq2_iommu to use dyn_array Yinghai Lu
2008-07-30 19:18 ` [PATCH 7/7] x86: make 64bit support dyn_array Yinghai Lu
2008-07-30 19:27 ` [PATCH 1/7] x86: 64bit support more than 256 irq v1 Yinghai Lu
2008-07-30 19:37 ` [PATCH 3/7] add dyn_array support Yinghai Lu
2008-07-30 19:40 ` [PATCH 6/7] irq: make irq_desc to use dyn_array Yinghai Lu
2008-07-30 19:40 ` [PATCH 4/7] random: make irq_timer_state " Yinghai Lu
2008-07-31 4:09 ` [PATCH 0/3] dyn_array support #2 Yinghai Lu
2008-07-31 4:10 ` [PATCH 1/3] serial: change irq_lists to use dyn_array Yinghai Lu
2008-07-31 5:58 ` Eric W. Biederman
2008-07-31 8:26 ` [PATCH] serial: change remove NR_IRQS in 8250.c Yinghai Lu
2008-07-31 11:50 ` Eric W. Biederman
2008-07-31 13:57 ` Alan Cox
2008-07-31 18:10 ` Eric W. Biederman
2008-07-31 23:15 ` Alan Cox
2008-08-01 3:20 ` Yinghai Lu
2008-07-31 4:11 ` [PATCH 2/3] add per_cpu_dyn_array support Yinghai Lu
2008-07-31 4:12 ` [PATCH 3/3] irq: make irqs in kernel stat use per_cpu_dyn_array Yinghai Lu
2008-07-31 10:14 ` [PATCH] x86 remove irq_vectors_limit.h Yinghai Lu
2008-07-31 16:32 ` [PATCH 0/3] dyn_array support #2 Mike Travis
2008-07-31 18:21 ` Yinghai Lu
2008-07-31 21:51 ` Peter Zijlstra
2008-07-31 22:07 ` Yinghai Lu
2008-07-31 22:25 ` Yinghai Lu
2008-08-01 3:52 ` Yinghai Lu
2008-07-31 22:14 ` Eric W. Biederman
2008-08-01 20:13 ` [PATCH 0/7] dyn_array support Eric W. Biederman
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