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| author | Sam Ravnborg <sam@ravnborg.org> | 2007-05-17 22:14:48 +0400 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2007-05-19 11:11:58 +0400 |
| commit | 0e0d314e6a01bb14d303e35e6f7ba24b17020044 (patch) | |
| tree | 596929a373bbbba7c2d7af4ae6e485a4c584b76f /scripts/mod | |
| parent | ca967258b69eb65dcb07bbab90fdf964c6d2ec45 (diff) | |
| download | linux-0e0d314e6a01bb14d303e35e6f7ba24b17020044.tar.xz | |
kbuild: introduce __init_refok/__initdata_refok to supress section mismatch warnings
Throughout the kernel there are a few legitimite references
to init or exit sections. Most of these are covered by the
patterns included in modpost but a few nees special attention.
To avoid hardcoding a lot of function names in modpost introduce
a marker so relevant function/data can be marked.
When modpost see a reference to a init/exit function from
a function/data marked no warning will be issued.
Idea from: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 2909391a8035..7c87267b6ff0 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -583,6 +583,12 @@ static int strrcmp(const char *s, const char *sub) /** * Whitelist to allow certain references to pass with no warning. + * + * Pattern 0: + * Do not warn if funtion/data are marked with __init_refok/__initdata_refok. + * The pattern is identified by: + * fromsec = .text.init.refok | .data.init.refok + * * Pattern 1: * If a module parameter is declared __initdata and permissions=0 * then this is legal despite the warning generated. @@ -686,6 +692,11 @@ static int secref_whitelist(const char *modname, const char *tosec, NULL }; + /* Check for pattern 0 */ + if ((strcmp(fromsec, ".text.init.refok") == 0) || + (strcmp(fromsec, ".data.init.refok") == 0)) + return 1; + /* Check for pattern 1 */ if (strcmp(tosec, ".init.data") != 0) f1 = 0; |