mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 03:13:59 +00:00
6220ec7844
Qooting Adrian: - net/sunrpc/svc.c uses highest_possible_node_id() - include/linux/nodemask.h says highest_possible_node_id() is out-of-line #if MAX_NUMNODES > 1 - the out-of-line highest_possible_node_id() is in lib/cpumask.c - lib/Makefile: lib-$(CONFIG_SMP) += cpumask.o CONFIG_ARCH_DISCONTIGMEM_ENABLE=y, CONFIG_SMP=n, CONFIG_SUNRPC=y -> highest_possible_node_id() is used in net/sunrpc/svc.c CONFIG_NODES_SHIFT defined and > 0 -> include/linux/numa.h: MAX_NUMNODES > 1 -> compile error The bug is not present on architectures where ARCH_DISCONTIGMEM_ENABLE depends on NUMA (but m32r isn't the only affected architecture). So move the function into page_alloc.c Cc: Adrian Bunk <bunk@stusta.de> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
46 lines
972 B
C
46 lines
972 B
C
#include <linux/kernel.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/module.h>
|
|
|
|
int __first_cpu(const cpumask_t *srcp)
|
|
{
|
|
return min_t(int, NR_CPUS, find_first_bit(srcp->bits, NR_CPUS));
|
|
}
|
|
EXPORT_SYMBOL(__first_cpu);
|
|
|
|
int __next_cpu(int n, const cpumask_t *srcp)
|
|
{
|
|
return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1));
|
|
}
|
|
EXPORT_SYMBOL(__next_cpu);
|
|
|
|
/*
|
|
* Find the highest possible smp_processor_id()
|
|
*
|
|
* Note: if we're prepared to assume that cpu_possible_map never changes
|
|
* (reasonable) then this function should cache its return value.
|
|
*/
|
|
int highest_possible_processor_id(void)
|
|
{
|
|
unsigned int cpu;
|
|
unsigned highest = 0;
|
|
|
|
for_each_cpu_mask(cpu, cpu_possible_map)
|
|
highest = cpu;
|
|
return highest;
|
|
}
|
|
EXPORT_SYMBOL(highest_possible_processor_id);
|
|
|
|
int __any_online_cpu(const cpumask_t *mask)
|
|
{
|
|
int cpu;
|
|
|
|
for_each_cpu_mask(cpu, *mask) {
|
|
if (cpu_online(cpu))
|
|
break;
|
|
}
|
|
return cpu;
|
|
}
|
|
EXPORT_SYMBOL(__any_online_cpu);
|