From 2272b0e03ea5731aca058eaf79c9955b36f0c083 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Tue, 6 Mar 2007 01:42:05 -0800 Subject: [PATCH] i386: make x86_64 tsc header require i386 rather than vice-versa Prior to commit 95492e4646e5de8b43d9a7908d6177fb737b61f0 ([PATCH] x86: rewrite SMP TSC sync code), the headers in asm-i386 did not really require anything in include/asm-x86_64. This means that distributions such as fedora did not include asm-x86_64 in kernel-devel headers for i386. Ingo's commit changed that, and broke things. This is easy enough to hack around in package builds by just including asm-x86_64 on i386, but that's kind of annoying. If anything, x86_64 should depend upon i386, not the other way around. This patch changes it so that asm-x86_64/tsc.h includes asm-i386/tsc.h, rather than vice-versa. Signed-off-by: Andres Salomon Acked-by: Ingo Molnar Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-x86_64/tsc.h | 68 +----------------------------------------------- 1 file changed, 1 insertion(+), 67 deletions(-) (limited to 'include/asm-x86_64') diff --git a/include/asm-x86_64/tsc.h b/include/asm-x86_64/tsc.h index 26c3e982828..d66ba6ef25f 100644 --- a/include/asm-x86_64/tsc.h +++ b/include/asm-x86_64/tsc.h @@ -1,67 +1 @@ -/* - * linux/include/asm-x86_64/tsc.h - * - * x86_64 TSC related functions - */ -#ifndef _ASM_x86_64_TSC_H -#define _ASM_x86_64_TSC_H - -#include - -/* - * Standard way to access the cycle counter. - */ -typedef unsigned long long cycles_t; - -extern unsigned int cpu_khz; -extern unsigned int tsc_khz; - -static inline cycles_t get_cycles(void) -{ - unsigned long long ret = 0; - -#ifndef CONFIG_X86_TSC - if (!cpu_has_tsc) - return 0; -#endif - -#if defined(CONFIG_X86_GENERIC) || defined(CONFIG_X86_TSC) - rdtscll(ret); -#endif - return ret; -} - -/* Like get_cycles, but make sure the CPU is synchronized. */ -static __always_inline cycles_t get_cycles_sync(void) -{ - unsigned long long ret; -#ifdef X86_FEATURE_SYNC_RDTSC - unsigned eax; - - /* - * Don't do an additional sync on CPUs where we know - * RDTSC is already synchronous: - */ - alternative_io("cpuid", ASM_NOP2, X86_FEATURE_SYNC_RDTSC, - "=a" (eax), "0" (1) : "ebx","ecx","edx","memory"); -#else - sync_core(); -#endif - rdtscll(ret); - - return ret; -} - -extern void tsc_init(void); -extern void mark_tsc_unstable(void); -extern int unsynchronized_tsc(void); -extern void init_tsc_clocksource(void); - -/* - * Boot-time check whether the TSCs are synchronized across - * all CPUs/cores: - */ -extern void check_tsc_sync_source(int cpu); -extern void check_tsc_sync_target(void); - -#endif +#include -- cgit v1.2.3