From fb59831b496a5bb7d0a06c7e702d88d1757edfca Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Thu, 14 Jul 2016 13:22:58 -0700 Subject: x86/smp: Remove stack_smp_processor_id() It serves no purpose -- raw_smp_processor_id() works fine. This change will be needed to move thread_info off the stack. Signed-off-by: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/a2bf4f07fbc30fb32f9f7f3f8f94ad3580823847.1468527351.git.luto@kernel.org Signed-off-by: Ingo Molnar --- arch/x86/include/asm/cpu.h | 1 - arch/x86/include/asm/smp.h | 6 ------ 2 files changed, 7 deletions(-) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index 678637ad7476..59d34c521d96 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -17,7 +17,6 @@ static inline void prefill_possible_map(void) {} #define cpu_physical_id(cpu) boot_cpu_physical_apicid #define safe_smp_processor_id() 0 -#define stack_smp_processor_id() 0 #endif /* CONFIG_SMP */ diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 66b057306f40..0576b6157f3a 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -172,12 +172,6 @@ extern int safe_smp_processor_id(void); #elif defined(CONFIG_X86_64_SMP) #define raw_smp_processor_id() (this_cpu_read(cpu_number)) -#define stack_smp_processor_id() \ -({ \ - struct thread_info *ti; \ - __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ - ti->cpu; \ -}) #define safe_smp_processor_id() smp_processor_id() #endif -- cgit v1.2.3