> -----Original Message-----
> From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-
> ow...@vger.kernel.org] On Behalf Of Tony Lindgren
> Sent: Thursday, September 02, 2010 9:51 PM
> To: Russell King - ARM Linux
> Cc: linux-omap@vger.kernel.org; linux-arm-ker...@lists.infradead.org;
> Bryan Wu; Will Deacon
> Subject: [PATCH 4/6] ARM: Do not call test_for_ipi or test_for_ltrirq on
> UP systems
>
> From f80d3cc85327ba84748646bb44a0c45103ef66bc Mon Sep 17 00:00:00 2001
> From: Tony Lindgren <t...@atomide.com>
> Date: Wed, 1 Sep 2010 20:40:47 -0700
> Subject: [PATCH 4/6] ARM: Do not call test_for_ipi or test_for_ltrirq on
> UP systems
>
> Do not call test_for_ipi or test_for_ltrirq on UP systems.
>
> Note that we can't put test_for_ltriq into SMP statement as
> it's inlined into the code and the remaining lines of the
> macro would still run before UP macro line.
>
> Signed-off-by: Tony Lindgren <t...@atomide.com>
> ---
> arch/arm/kernel/entry-armv.S | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
> index bb2ef60..b8c1ec7 100644
> --- a/arch/arm/kernel/entry-armv.S
> +++ b/arch/arm/kernel/entry-armv.S
> @@ -40,6 +40,11 @@
> bne asm_do_IRQ
>
> #ifdef CONFIG_SMP
Do we need this code to be under " CONFIG_SMP" now ?
> +#ifdef CONFIG_SMP_ON_UP
> + adr lr, BSYM(2f) @ set lr to end of macro for early return
> + SMP(nop) @ continue on SMP hardware
> + UP(mov pc, lr) @ return early on UP
> +#endif
> /*
> * XXX
> *
> @@ -57,6 +62,7 @@
> adrne lr, BSYM(1b)
> bne do_local_timer
> #endif
> +2:
> #endif
>
> .endm
> --
> 1.7.1
>
> --
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