From abd0a782359717ded8f663bc5b8e5e9e3cc4f5e7 Mon Sep 17 00:00:00 2001 From: Hirokazu Takata Date: Fri, 17 Aug 2007 23:40:37 +0900 Subject: [PATCH] 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 Signed-off-by: Hirokazu Takata --- arch/m32r/kernel/entry.S | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S index 07d95a4f51a2..4b3a7742fe47 100644 --- a/arch/m32r/kernel/entry.S +++ b/arch/m32r/kernel/entry.S @@ -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 /* -- 2.20.1