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authorSam Ravnborg <sam@ravnborg.org>2007-02-26 16:45:41 +0100
committerSam Ravnborg <sam@ravnborg.org>2007-05-02 20:58:07 +0200
commitaae5f662a32c35b1a962627535acb588d48ff5f9 (patch)
tree6e300ed8557e850e350c95dffb57ff9d5d5b182d
parent85bd2fddd68e757da8e1af98f857f61a3c9ce647 (diff)
kbuild: whitelist section mismatch in init/main.c
In init/main.c we have a reference from rest_init() to .init.text which is intentional. Rename the function 'init' to 'kernel_init' to make it a kernel wide unique symbol and whitelist the reference. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
-rw-r--r--init/main.c6
-rw-r--r--scripts/mod/modpost.c15
2 files changed, 17 insertions, 4 deletions
diff --git a/init/main.c b/init/main.c
index a92989e7836..7a92b4ca3aa 100644
--- a/init/main.c
+++ b/init/main.c
@@ -82,7 +82,7 @@
#warning gcc-4.1.0 is known to miscompile the kernel. A different compiler version is recommended.
#endif
-static int init(void *);
+static int kernel_init(void *);
extern void init_IRQ(void);
extern void fork_init(unsigned long);
@@ -435,7 +435,7 @@ static void __init setup_command_line(char *command_line)
static void noinline rest_init(void)
__releases(kernel_lock)
{
- kernel_thread(init, NULL, CLONE_FS | CLONE_SIGHAND);
+ kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
unlock_kernel();
@@ -772,7 +772,7 @@ static int noinline init_post(void)
panic("No init found. Try passing init= option to kernel.");
}
-static int __init init(void * unused)
+static int __init kernel_init(void * unused)
{
lock_kernel();
/*
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 1912c752e42..be0827f734c 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -589,7 +589,7 @@ static int strrcmp(const char *s, const char *sub)
* the pattern is identified by:
* tosec = .init.text | .exit.text | .init.data
* fromsec = .data
- * atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one
+ * atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console
*
* Pattern 3:
* Some symbols belong to init section but still it is ok to reference
@@ -599,6 +599,14 @@ static int strrcmp(const char *s, const char *sub)
* For ex. symbols marking the init section boundaries.
* This pattern is identified by
* refsymname = __init_begin, _sinittext, _einittext
+ * Pattern 4:
+ * During the early init phase we have references from .init.text to
+ * .text we have an intended section mismatch - do not warn about it.
+ * See kernel_init() in init/main.c
+ * tosec = .init.text
+ * fromsec = .text
+ * atsym = kernel_init
+ * Some symbols belong to init section but still it is ok to reference
**/
static int secref_whitelist(const char *modname, const char *tosec,
const char *fromsec, const char *atsym,
@@ -668,6 +676,11 @@ static int secref_whitelist(const char *modname, const char *tosec,
if (strcmp(refsymname, *s) == 0)
return 1;
}
+ /* Check for pattern 4 */
+ if ((strcmp(tosec, ".init.text") == 0) &&
+ (strcmp(fromsec, ".text") == 0) &&
+ (strcmp(refsymname, "kernel_init") == 0))
+ return 1;
return 0;
}