From 0b1f68e836bcf1ca2861f95066985c57ecfb2f1a Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 2 Apr 2014 10:57:49 +0100 Subject: ARM: 8018/1: Add {inc,dec}_preempt_count asm macros The patch adds asm macros for inc_preempt_count and dec_preempt_count_ti (which also gets the current thread_info) instead of open-coding them in arch/arm/vfp/*.S files. Signed-off-by: Catalin Marinas Tested-by: Arun KS Signed-off-by: Russell King --- arch/arm/include/asm/assembler.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'arch/arm/include/asm/assembler.h') diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 9a4965ad6867..b974184f9941 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -23,6 +23,7 @@ #include #include #include +#include #define IOMEM(x) (x) @@ -184,6 +185,37 @@ mov \rd, \rd, lsl #13 .endm +/* + * Increment/decrement the preempt count. + */ +#ifdef CONFIG_PREEMPT_COUNT + .macro inc_preempt_count, ti, tmp + ldr \tmp, [\ti, #TI_PREEMPT] @ get preempt count + add \tmp, \tmp, #1 @ increment it + str \tmp, [\ti, #TI_PREEMPT] + .endm + + .macro dec_preempt_count, ti, tmp + ldr \tmp, [\ti, #TI_PREEMPT] @ get preempt count + sub \tmp, \tmp, #1 @ decrement it + str \tmp, [\ti, #TI_PREEMPT] + .endm + + .macro dec_preempt_count_ti, ti, tmp + get_thread_info \ti + dec_preempt_count \ti, \tmp + .endm +#else + .macro inc_preempt_count, ti, tmp + .endm + + .macro dec_preempt_count, ti, tmp + .endm + + .macro dec_preempt_count_ti, ti, tmp + .endm +#endif + #define USER(x...) \ 9999: x; \ .pushsection __ex_table,"a"; \ -- cgit v1.2.3