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kernel
os
linux
mm: move max_map_count bits into mm.h
max_map_count sysctl unrelated to scheduler. Move its bits from
include/linux/sched/sysctl.h to include/linux/mm.h.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
authored by
Andrey Ryabinin
and committed by
Linus Torvalds
ea606cf5
f9719a03
+21
-24
+21
include/linux/mm.h
+21
include/linux/mm.h
···
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#define mm_forbids_zeropage(X) (0)
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#endif
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/*
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* Default maximum number of active map areas, this limits the number of vmas
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* per mm struct. Users can overwrite this number by sysctl but there is a
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* problem.
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*
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* When a program's coredump is generated as ELF format, a section is created
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* per a vma. In ELF, the number of sections is represented in unsigned short.
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* This means the number of sections should be smaller than 65535 at coredump.
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* Because the kernel adds some informative sections to a image of program at
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* generating coredump, we need some margin. The number of extra sections is
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* 1-3 now and depends on arch. We use "5" as safe margin, here.
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*
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* ELF extended numbering allows more than 65535 sections, so 16-bit bound is
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* not a hard limit any more. Although some userspace tools can be surprised by
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* that.
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*/
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#define MAPCOUNT_ELF_CORE_MARGIN (5)
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#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
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extern int sysctl_max_map_count;
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extern unsigned long sysctl_user_reserve_kbytes;
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extern unsigned long sysctl_admin_reserve_kbytes;
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-21
include/linux/sched/sysctl.h
-21
include/linux/sched/sysctl.h
···
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enum { sysctl_hung_task_timeout_secs = 0 };
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#endif
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-
/*
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* Default maximum number of active map areas, this limits the number of vmas
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* per mm struct. Users can overwrite this number by sysctl but there is a
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* problem.
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*
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* When a program's coredump is generated as ELF format, a section is created
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* per a vma. In ELF, the number of sections is represented in unsigned short.
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* This means the number of sections should be smaller than 65535 at coredump.
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* Because the kernel adds some informative sections to a image of program at
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* generating coredump, we need some margin. The number of extra sections is
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* 1-3 now and depends on arch. We use "5" as safe margin, here.
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*
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* ELF extended numbering allows more than 65535 sections, so 16-bit bound is
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* not a hard limit any more. Although some userspace tools can be surprised by
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* that.
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*/
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#define MAPCOUNT_ELF_CORE_MARGIN (5)
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#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
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extern int sysctl_max_map_count;
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-
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extern unsigned int sysctl_sched_latency;
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extern unsigned int sysctl_sched_min_granularity;
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extern unsigned int sysctl_sched_wakeup_granularity;
-1
mm/mmap.c
-1
mm/mmap.c
-1
mm/mremap.c
-1
mm/mremap.c