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authorAndrea Righi <righi.andrea@gmail.com>2008-07-27 17:29:15 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-27 09:58:20 -0700
commit5995477ab7f3522c497c9c4a1c55373e9d655574 (patch)
treea147fb61642a7ac5441855964eb97a2ff1e37202 /Documentation/CodingStyle
parent605ccb73f6a1c891a16268b3a2923208fc637958 (diff)
task IO accounting: improve code readability
Put all i/o statistics in struct proc_io_accounting and use inline functions to initialize and increment statistics, removing a lot of single variable assignments. This also reduces the kernel size as following (with CONFIG_TASK_XACCT=y and CONFIG_TASK_IO_ACCOUNTING=y). text data bss dec hex filename 11651 0 0 11651 2d83 kernel/exit.o.before 11619 0 0 11619 2d63 kernel/exit.o.after 10886 132 136 11154 2b92 kernel/fork.o.before 10758 132 136 11026 2b12 kernel/fork.o.after 3082029 807968 4818600 8708597 84e1f5 vmlinux.o.before 3081869 807968 4818600 8708437 84e155 vmlinux.o.after Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Acked-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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