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#ifndef CPUS_H
#define CPUS_H

#include <unistd.h>
#include "built_in.h"
#include "die.h"

static inline unsigned int get_number_cpus(void)
{
	int ret = sysconf(_SC_NPROCESSORS_CONF);

	if (unlikely(ret <= 0))
		panic("get_number_cpus error!\n");

	return ret;
}

static inline unsigned int get_number_cpus_online(void)
{
	int ret = sysconf(_SC_NPROCESSORS_ONLN);

	if (unlikely(ret <= 0))
		panic("get_number_cpus_online error!\n");

	return ret;
}

#endif /* CPUS_H */
>
authorJérémy Lefaure <jeremy.lefaure@lse.epita.fr>2016-11-30 15:54:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-11-30 16:32:52 -0800
commite1465d125d2189e667029b9fa8a6f455180fbcf2 (patch)
tree84556b0ca42c9ec61792040f5f31ec4b9954b968 /Documentation/devicetree
parentded6e842cf499ef04b0d611d92b859d5b846c497 (diff)
mm, thp: propagation of conditional compilation in khugepaged.c
Commit b46e756f5e47 ("thp: extract khugepaged from mm/huge_memory.c") moved code from huge_memory.c to khugepaged.c. Some of this code should be compiled only when CONFIG_SYSFS is enabled but the condition around this code was not moved into khugepaged.c. The result is a compilation error when CONFIG_SYSFS is disabled: mm/built-in.o: In function `khugepaged_defrag_store': khugepaged.c:(.text+0x2d095): undefined reference to `single_hugepage_flag_store' mm/built-in.o: In function `khugepaged_defrag_show': khugepaged.c:(.text+0x2d0ab): undefined reference to `single_hugepage_flag_show' This commit adds the #ifdef CONFIG_SYSFS around the code related to sysfs. Link: http://lkml.kernel.org/r/20161114203448.24197-1-jeremy.lefaure@lse.epita.fr Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/devicetree')