git.monstr.eu Git - linux-2.6-microblaze.git/commit

author	Kevin D. Kissell <kevink@mips.com>
	Thu, 12 Jul 2007 15:21:08 +0000 (16:21 +0100)
committer	Ralf Baechle <ralf@linux-mips.org>
	Thu, 12 Jul 2007 16:41:17 +0000 (17:41 +0100)
commit	0db34215c7e0ef618e7b29fbf271194ca5434f8e
tree	261d8cd77fad2d661157ee5e5bde8e3fdc8c96b9	tree
parent	bd0765098bf22eb8b1319f649a4c3301b40ec04c	commit \| diff

[MIPS] SMTC: Interrupt mask backstop hack

To support multiple TC microthreads acting as "CPUs" within a VPE,
VPE-wide interrupt mask bits must be specially manipulated during
interrupt handling. To support legacy drivers and interrupt controller
management code, SMTC has a "backstop" to track and if necessary restore
the interrupt mask. This has some performance impact on interrupt service
overhead. Disable it only if you know what you are doing.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig		diff \| blob \| history
arch/mips/kernel/entry.S		diff \| blob \| history
arch/mips/kernel/genex.S		diff \| blob \| history
include/asm-mips/irq.h		diff \| blob \| history