From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <20080130180940.648082000@sgi.com> References: <20080130180940.022172000@sgi.com> Date: Wed, 30 Jan 2008 10:09:44 -0800 From: travis@sgi.com Subject: [PATCH 4/6] ia64: Use generic percpu linux-2.6.git Content-Disposition: inline; filename=ia64_generic_percpu Sender: owner-linux-mm@kvack.org Return-Path: To: Geert Uytterhoeven , Linus Torvalds , mingo@elte.hu, Thomas Gleixner Cc: Christoph Lameter , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Tony Luck , linux-ia64@vger.kernel.org List-ID: ia64 has a special processor specific mapping that can be used to locate the offset for the current per cpu area. Based on latest linux-2.6.git Cc: Tony Luck Cc: linux-ia64@vger.kernel.org Signed-off-by: Mike Travis --- linux-2.6.git: - added back in missing pieces from x86.git merge --- include/asm-ia64/percpu.h | 24 +++++++----------------- include/linux/percpu.h | 4 ---- 2 files changed, 7 insertions(+), 21 deletions(-) --- a/include/asm-ia64/percpu.h +++ b/include/asm-ia64/percpu.h @@ -19,29 +19,14 @@ # define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__))) #endif -#define DECLARE_PER_CPU(type, name) \ - extern PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name - #ifdef CONFIG_SMP -extern unsigned long __per_cpu_offset[NR_CPUS]; -#define per_cpu_offset(x) (__per_cpu_offset[x]) - -/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */ -DECLARE_PER_CPU(unsigned long, local_per_cpu_offset); - -#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu])) -#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset))) -#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset))) +#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset) -extern void setup_per_cpu_areas (void); extern void *per_cpu_init(void); #else /* ! SMP */ -#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var)) -#define __get_cpu_var(var) per_cpu__##var -#define __raw_get_cpu_var(var) per_cpu__##var #define per_cpu_init() (__phys_per_cpu_start) #endif /* SMP */ @@ -52,7 +37,12 @@ extern void *per_cpu_init(void); * On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly * more efficient. */ -#define __ia64_per_cpu_var(var) (per_cpu__##var) +#define __ia64_per_cpu_var(var) per_cpu__##var + +#include + +/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */ +DECLARE_PER_CPU(unsigned long, local_per_cpu_offset); #endif /* !__ASSEMBLY__ */ --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -9,10 +9,6 @@ #include -#ifndef PER_CPU_ATTRIBUTES -#define PER_CPU_ATTRIBUTES -#endif - #ifdef CONFIG_SMP #define DEFINE_PER_CPU(type, name) \ __attribute__((__section__(".data.percpu"))) \ -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org