xiaomi-sm8450/android_kernel_xiaomi_sm8450
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sysctl: Make the header lists per directory.

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Slightly enhance efficiency and clarity of the code by making the
header list per directory instead of per set.

Benchmark before:
    make-dummies 0 999 -> 0.63s
    rmmod dummy        -> 0.12s
    make-dummies 0 9999 -> 2m35s
    rmmod dummy         -> 18s

Benchmark after:
    make-dummies 0 999 -> 0.32s
    rmmod dummy        -> 0.12s
    make-dummies 0 9999 -> 1m17s
    rmmod dummy         -> 17s

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2012-01-07 23:45:12 -08:00
parent e54012cede
commit 9e3d47df35
2 changed files with 12 additions and 18 deletions
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2
include/linux/sysctl.h
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@@ -1047,10 +1047,10 @@ struct ctl_table_header
struct ctl_dir {
/* Header must be at the start of ctl_dir */
struct ctl_table_header header;
struct list_head list;
};
struct ctl_table_set {
struct list_head list;
int (*is_seen)(struct ctl_table_set *);
struct ctl_dir dir;
};