Commit abd0a782 authored Aug 17, 2007 by Hirokazu Takata

m32r: Exit ei_handler directly for no IRQ case or IPI operations



If no IRQ request is found in the IRQ check of ei_handler,
we can exit directly by jumping "restore_all", instead of via
"ret_from_intr".

This modification is also likely effective for IPI operations,
because scheduler call never happen at the exit of IPIs.

Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>

parent 5171b100

arch/m32r/kernel/entry.S

+1 −2

Original line number	Diff line number	Diff line
		@@ -333,7 +333,7 @@ ENTRY(ei_handler)
		.fillinsn
		1:
		addi sp, #4
		bra ret_to_intr
		bra restore_all
		.fillinsn
		2:
		srli r0, #2
		@@ -382,7 +382,6 @@ check_end:
		pop r14
		seth r0, #shigh(M32R_ICU_IMASK_ADDR)
		st r14, @(low(M32R_ICU_IMASK_ADDR),r0)
		ret_to_intr:
		bra ret_from_intr

		/*