diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-31 17:02:57 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-31 17:02:57 -0700 |
commit | 94559a4a81a6912f6ca22988e544a43401947c68 (patch) | |
tree | b3c798ddb053df5c687fec7500b4d9fb42137235 /arch/arm/include/asm/smp_plat.h | |
parent | 19ed3eb975b7de9b4b0e41714eb9302cd95e7ae6 (diff) | |
parent | eba1c71819d210f5e0d522571f9b8abce94fe9c5 (diff) |
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Various assorted fixes:
- a couple of patches from Mark Rutland to resolve an errata with
Cortex-A15 CPUs.
- fix cpuidle for the CPU part ID changes in the last merge window
- add support for a relocation which ARM binutils is generating in
some circumstances"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8130/1: cpuidle/cpuidle-big_little: fix reading cpu id part number
ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex
ARM: 8128/1: abort: don't clear the exclusive monitors
ARM: 8127/1: module: add support for R_ARM_TARGET1 relocations
Diffstat (limited to 'arch/arm/include/asm/smp_plat.h')
-rw-r--r-- | arch/arm/include/asm/smp_plat.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h index a252c0bfacf..0ad7d490ee6 100644 --- a/arch/arm/include/asm/smp_plat.h +++ b/arch/arm/include/asm/smp_plat.h @@ -8,6 +8,7 @@ #include <linux/cpumask.h> #include <linux/err.h> +#include <asm/cpu.h> #include <asm/cputype.h> /* @@ -25,6 +26,20 @@ static inline bool is_smp(void) #endif } +/** + * smp_cpuid_part() - return part id for a given cpu + * @cpu: logical cpu id. + * + * Return: part id of logical cpu passed as argument. + */ +static inline unsigned int smp_cpuid_part(int cpu) +{ + struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpu); + + return is_smp() ? cpu_info->cpuid & ARM_CPU_PART_MASK : + read_cpuid_part(); +} + /* all SMP configurations have the extended CPUID registers */ #ifndef CONFIG_MMU #define tlb_ops_need_broadcast() 0 |