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![Eric W. Biederman](/assets/img/avatar_default.png)
With this change the sysctl inodes can be cached and nothing needs to be done when removing a sysctl table. For a cost of 2K code we will save about 4K of static tables (when we remove de from ctl_table) and 70K in proc_dir_entries that we will not allocate, or about half that on a 32bit arch. The speed feels about the same, even though we can now cache the sysctl dentries :( We get the core advantage that we don't need to have a 1 to 1 mapping between ctl table entries and proc files. Making it possible to have /proc/sys vary depending on the namespace you are in. The currently merged namespaces don't have an issue here but the network namespace under /proc/sys/net needs to have different directories depending on which network adapters are visible. By simply being a cache different directories being visible depending on who you are is trivial to implement. [akpm@osdl.org: fix uninitialised var] [akpm@osdl.org: fix ARM build] [bunk@stusta.de: make things static] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 lines
417 B
Makefile
16 lines
417 B
Makefile
#
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# Makefile for the Linux proc filesystem routines.
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#
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obj-$(CONFIG_PROC_FS) += proc.o
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proc-y := nommu.o task_nommu.o
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proc-$(CONFIG_MMU) := mmu.o task_mmu.o
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proc-y += inode.o root.o base.o generic.o array.o \
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proc_tty.o proc_misc.o proc_sysctl.o
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proc-$(CONFIG_PROC_KCORE) += kcore.o
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proc-$(CONFIG_PROC_VMCORE) += vmcore.o
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proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o
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proc-$(CONFIG_PRINTK) += kmsg.o
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