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x86/non-x86: percpu, node ids, apic ids x86.git fixup
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Mike Travis authored and Ingo Molnar committed Jan 30, 2008
1 parent 3212bff commit dd5af90
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Showing 4 changed files with 13 additions and 13 deletions.
2 changes: 1 addition & 1 deletion arch/x86/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ config GENERIC_TIME_VSYSCALL
bool
default X86_64

config ARCH_SETS_UP_PER_CPU_AREA
config HAVE_SETUP_PER_CPU_AREA
def_bool X86_64

config ARCH_SUPPORTS_OPROFILE
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12 changes: 2 additions & 10 deletions include/asm-generic/percpu.h
Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
#endif

/*
* A percpu variable may point to a discarded reghions. The following are
* A percpu variable may point to a discarded regions. The following are
* established ways to produce a usable pointer from the percpu variable
* offset.
*/
Expand All @@ -59,18 +59,10 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
(*SHIFT_PERCPU_PTR(&per_cpu_var(var), __my_cpu_offset))


#ifdef CONFIG_ARCH_SETS_UP_PER_CPU_AREA
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
extern void setup_per_cpu_areas(void);
#endif

/* A macro to avoid #include hell... */
#define percpu_modcopy(pcpudst, src, size) \
do { \
unsigned int __i; \
for_each_possible_cpu(__i) \
memcpy((pcpudst)+per_cpu_offset(__i), \
(src), (size)); \
} while (0)
#else /* ! SMP */

#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu_var(var)))
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4 changes: 2 additions & 2 deletions init/main.c
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Expand Up @@ -363,7 +363,7 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { }

#else

#ifndef CONFIG_ARCH_SETS_UP_PER_CPU_AREA
#ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;

EXPORT_SYMBOL(__per_cpu_offset);
Expand All @@ -384,7 +384,7 @@ static void __init setup_per_cpu_areas(void)
ptr += size;
}
}
#endif /* CONFIG_ARCH_SETS_UP_CPU_AREA */
#endif /* CONFIG_HAVE_SETUP_PER_CPU_AREA */

/* Called by boot processor to activate the rest. */
static void __init smp_init(void)
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8 changes: 8 additions & 0 deletions kernel/module.c
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Expand Up @@ -430,6 +430,14 @@ static unsigned int find_pcpusec(Elf_Ehdr *hdr,
return find_sec(hdr, sechdrs, secstrings, ".data.percpu");
}

static void percpu_modcopy(void *pcpudest, const void *from, unsigned long size)
{
int cpu;

for_each_possible_cpu(cpu)
memcpy(pcpudest + per_cpu_offset(cpu), from, size);
}

static int percpu_modinit(void)
{
pcpu_num_used = 2;
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