mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-03 10:20:34 +00:00
c7d2d28b98
From: Ivan Kokshaysky <ink@jurassic.park.msu.ru> After removal of fixup_cpu_present_map() function Alpha ended up with an empty cpu_present_map, so secondary CPUs on SMP systems are not being started. Worse, on some platforms we route interrupts to secondary CPUs using cpu_possible_map which is still populated properly. As a result, these interrupts go nowhere so the machines like DP264 aren't able to boot even with a primary CPU. Fixed basically by s/cpu_present_mask/cpu_present_map/. Thanks to Ernst Herzberg for reporting the bug and testing the fix. Cc: Ernst Herzberg <list-lkml@net4u.de> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#ifndef __ASM_SMP_H
|
|
#define __ASM_SMP_H
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/bitops.h>
|
|
#include <asm/pal.h>
|
|
|
|
/* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
|
|
|
|
static __inline__ unsigned char
|
|
__hard_smp_processor_id(void)
|
|
{
|
|
register unsigned char __r0 __asm__("$0");
|
|
__asm__ __volatile__(
|
|
"call_pal %1 #whami"
|
|
: "=r"(__r0)
|
|
:"i" (PAL_whami)
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return __r0;
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
#include <asm/irq.h>
|
|
|
|
struct cpuinfo_alpha {
|
|
unsigned long loops_per_jiffy;
|
|
unsigned long last_asn;
|
|
int need_new_asn;
|
|
int asn_lock;
|
|
unsigned long ipi_count;
|
|
unsigned long prof_multiplier;
|
|
unsigned long prof_counter;
|
|
unsigned char mcheck_expected;
|
|
unsigned char mcheck_taken;
|
|
unsigned char mcheck_extra;
|
|
} __attribute__((aligned(64)));
|
|
|
|
extern struct cpuinfo_alpha cpu_data[NR_CPUS];
|
|
|
|
#define PROC_CHANGE_PENALTY 20
|
|
|
|
#define hard_smp_processor_id() __hard_smp_processor_id()
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
|
|
|
extern int smp_num_cpus;
|
|
#define cpu_possible_map cpu_present_map
|
|
|
|
int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, cpumask_t cpu);
|
|
|
|
#else /* CONFIG_SMP */
|
|
|
|
#define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; })
|
|
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#define NO_PROC_ID (-1)
|
|
|
|
#endif
|