mirror of https://gitee.com/openkylin/linux.git
a63be500c6
Drop static on a local variable, when the variable is initialized before any use on every possible execution path through the function. The static has no benefit, and dropping it reduces the code size. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; // </smpl> The change in code size is indicates by the following output from the size command. before: text data bss dec hex filename 16671 48 16 16735 415f drivers/mtd/chips/cfi_cmdset_0020.o after: text data bss dec hex filename 16639 48 8 16695 4137 drivers/mtd/chips/cfi_cmdset_0020.o Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Brian Norris <computersforpeace@gmail.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| cfi_cmdset_0001.c | ||
| cfi_cmdset_0002.c | ||
| cfi_cmdset_0020.c | ||
| cfi_probe.c | ||
| cfi_util.c | ||
| chipreg.c | ||
| fwh_lock.h | ||
| gen_probe.c | ||
| jedec_probe.c | ||
| map_absent.c | ||
| map_ram.c | ||
| map_rom.c | ||