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authorYasunori Goto <y-goto@jp.fujitsu.com>2007-05-08 00:23:10 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:14:57 -0700
commit72280ede316911fd5a82ef78d12a6705b1007d36 (patch)
treec6cdec169d300f6967c47771917d99035423bf91 /scripts/mod
parenta3142c8e1dd57ff48040bdb3478cff9312543dc3 (diff)
Add white list into modpost.c for memory hotplug code and ia64's machvec section
This patch is add white list into modpost.c for some functions and ia64's section to fix section mismatchs. sparse_index_alloc() and zone_wait_table_init() calls bootmem allocator at boot time, and kmalloc/vmalloc at hotplug time. If config memory hotplug is on, there are references of bootmem allocater(init text) from them (normal text). This is cause of section mismatch. Bootmem is called by many functions and it must be used only at boot time. I think __init of them should keep for section mismatch check. So, I would like to register sparse_index_alloc() and zone_wait_table_init() into white list. In addition, ia64's .machvec section is function table of some platform dependent code. It is mixture of .init.text and normal text. These reference of __init functions are valid too. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/modpost.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 4ab36de45aa..480e18b00aa 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -642,6 +642,16 @@ static int strrcmp(const char *s, const char *sub)
* tosec = .init.text
* fromsec = .paravirtprobe
*
+ * Pattern 9:
+ * Some of functions are common code between boot time and hotplug
+ * time. The bootmem allocater is called only boot time in its
+ * functions. So it's ok to reference.
+ * tosec = .init.text
+ *
+ * Pattern 10:
+ * ia64 has machvec table for each platform. It is mixture of function
+ * pointer of .init.text and .text.
+ * fromsec = .machvec
**/
static int secref_whitelist(const char *modname, const char *tosec,
const char *fromsec, const char *atsym,
@@ -668,6 +678,12 @@ static int secref_whitelist(const char *modname, const char *tosec,
NULL
};
+ const char *pat4sym[] = {
+ "sparse_index_alloc",
+ "zone_wait_table_init",
+ NULL
+ };
+
/* Check for pattern 1 */
if (strcmp(tosec, ".init.data") != 0)
f1 = 0;
@@ -726,6 +742,17 @@ static int secref_whitelist(const char *modname, const char *tosec,
(strcmp(fromsec, ".paravirtprobe") == 0))
return 1;
+ /* Check for pattern 9 */
+ if ((strcmp(tosec, ".init.text") == 0) &&
+ (strcmp(fromsec, ".text") == 0))
+ for (s = pat4sym; *s; s++)
+ if (strcmp(atsym, *s) == 0)
+ return 1;
+
+ /* Check for pattern 10 */
+ if (strcmp(fromsec, ".machvec") == 0)
+ return 1;
+
return 0;
}