diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm64/include/asm/smp_plat.h | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm64/include/asm/smp_plat.h')
| -rw-r--r-- | kernel/arch/arm64/include/asm/smp_plat.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/kernel/arch/arm64/include/asm/smp_plat.h b/kernel/arch/arm64/include/asm/smp_plat.h index 8dcd61e32..af58dcdef 100644 --- a/kernel/arch/arm64/include/asm/smp_plat.h +++ b/kernel/arch/arm64/include/asm/smp_plat.h @@ -19,6 +19,8 @@ #ifndef __ASM_SMP_PLAT_H #define __ASM_SMP_PLAT_H +#include <linux/cpumask.h> + #include <asm/types.h> struct mpidr_hash { @@ -39,7 +41,19 @@ static inline u32 mpidr_hash_size(void) */ extern u64 __cpu_logical_map[NR_CPUS]; #define cpu_logical_map(cpu) __cpu_logical_map[cpu] - -void __init do_post_cpus_up_work(void); +/* + * Retrieve logical cpu index corresponding to a given MPIDR.Aff* + * - mpidr: MPIDR.Aff* bits to be used for the look-up + * + * Returns the cpu logical index or -EINVAL on look-up error + */ +static inline int get_logical_index(u64 mpidr) +{ + int cpu; + for (cpu = 0; cpu < nr_cpu_ids; cpu++) + if (cpu_logical_map(cpu) == mpidr) + return cpu; + return -EINVAL; +} #endif /* __ASM_SMP_PLAT_H */ |