Re: [patch 16/28] sparc: Remove BKL from apc
From: David Miller
Date: Tue Nov 03 2009 - 00:27:43 EST
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date: Sat, 10 Oct 2009 15:36:39 -0000
> commit ab772027 (sparc: arch/sparc/kernel/apc.c to unlocked_ioctl)
> added lock/unlock_kernel() to the apc ioctl code.
> The code needs no serialization at all. Neither put/get_user nor the
> read/write access to the sbus devices require it. Remove BKL.
> cycle_kernel_lock() was added during the big BKL pushdown. It should
> ensure the serializiation against driver init code. In this case there
> is nothing to serialize. Remove it as well.
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Sorry, forgot to explicitly say I applied this to sparc-next-2.6, thanks.
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