* [PATCH] unicode: make array 'token' static const, makes object smaller
@ 2019-09-06 13:58 Colin King
2019-09-06 15:31 ` Theodore Y. Ts'o
2019-09-09 14:21 ` Gabriel Krisman Bertazi
0 siblings, 2 replies; 3+ messages in thread
From: Colin King @ 2019-09-06 13:58 UTC (permalink / raw)
To: Gabriel Krisman Bertazi, linux-fsdevel; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
Don't populate the array 'token' on the stack but instead make it
static const. Makes the object code smaller by 234 bytes.
Before:
text data bss dec hex filename
5371 272 0 5643 160b fs/unicode/utf8-core.o
After:
text data bss dec hex filename
5041 368 0 5409 1521 fs/unicode/utf8-core.o
(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
fs/unicode/utf8-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/unicode/utf8-core.c b/fs/unicode/utf8-core.c
index 71ca4d047d65..2a878b739115 100644
--- a/fs/unicode/utf8-core.c
+++ b/fs/unicode/utf8-core.c
@@ -154,7 +154,7 @@ static int utf8_parse_version(const char *version, unsigned int *maj,
{
substring_t args[3];
char version_string[12];
- const struct match_token token[] = {
+ static const struct match_token token[] = {
{1, "%d.%d.%d"},
{0, NULL}
};
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] unicode: make array 'token' static const, makes object smaller
2019-09-06 13:58 [PATCH] unicode: make array 'token' static const, makes object smaller Colin King
@ 2019-09-06 15:31 ` Theodore Y. Ts'o
2019-09-09 14:21 ` Gabriel Krisman Bertazi
1 sibling, 0 replies; 3+ messages in thread
From: Theodore Y. Ts'o @ 2019-09-06 15:31 UTC (permalink / raw)
To: Colin King
Cc: Gabriel Krisman Bertazi, linux-fsdevel, kernel-janitors, linux-kernel
On Fri, Sep 06, 2019 at 02:58:07PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the array 'token' on the stack but instead make it
> static const. Makes the object code smaller by 234 bytes.
>
> Before:
> text data bss dec hex filename
> 5371 272 0 5643 160b fs/unicode/utf8-core.o
>
> After:
> text data bss dec hex filename
> 5041 368 0 5409 1521 fs/unicode/utf8-core.o
>
> (gcc version 9.2.1, amd64)
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Nice, thanks!
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
- Ted
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] unicode: make array 'token' static const, makes object smaller
2019-09-06 13:58 [PATCH] unicode: make array 'token' static const, makes object smaller Colin King
2019-09-06 15:31 ` Theodore Y. Ts'o
@ 2019-09-09 14:21 ` Gabriel Krisman Bertazi
1 sibling, 0 replies; 3+ messages in thread
From: Gabriel Krisman Bertazi @ 2019-09-09 14:21 UTC (permalink / raw)
To: Colin King; +Cc: linux-fsdevel, kernel-janitors, linux-kernel
Colin King <colin.king@canonical.com> writes:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the array 'token' on the stack but instead make it
> static const. Makes the object code smaller by 234 bytes.
>
> Before:
> text data bss dec hex filename
> 5371 272 0 5643 160b fs/unicode/utf8-core.o
>
> After:
> text data bss dec hex filename
> 5041 368 0 5409 1521 fs/unicode/utf8-core.o
>
> (gcc version 9.2.1, amd64)
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Thanks, I will get this queued up.
--
Gabriel Krisman Bertazi
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-09-09 14:22 UTC | newest]
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2019-09-06 15:31 ` Theodore Y. Ts'o
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