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authorSam Ravnborg <sam@ravnborg.org>2006-04-14 23:54:13 +0200
committerSam Ravnborg <sam@mars.ravnborg.org>2006-04-15 00:35:22 +0200
commit5ecdd0f67c624714ccd5358e1cc88324f86f0e10 (patch)
tree54ed2346bf1f4c85763fbd0622422c67679dfbc1 /scripts/mod
parentb5ac4817de3032796c558b0a32062e7392b5ea60 (diff)
downloadkernel-5ecdd0f67c624714ccd5358e1cc88324f86f0e10.tar.gz
kbuild: fix false section mismatch warnings
Darren Jenkins <darrenrjenkins@gmail.com> pointed out a number of false positives where we referenced variables from a _driver variable. Fix it by check for that pattern and ignore it. Randy.Dunlap <rdunlap@xenotime.net> pointed out a similar set of warnings for a number of scsi drivers. In scsi world they misname their variables *_template or *_sht so add these to list of variables that may have references to .init.text with no warning. Randy.Dunlap <rdunlap@xenotime.net> also pointed out a scsi driver with many references to .exit.text from .rodata. This is compiler generated references and we already ignore these for .init.text, so ignore them for .exit.text also. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/modpost.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 7e8079a34adf..cd00e9f07589 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -492,17 +492,19 @@ static int strrcmp(const char *s, const char *sub)
* These functions may often be marked __init and we do not want to
* warn here.
* the pattern is identified by:
- * tosec = .init.text | .exit.text
+ * tosec = .init.text | .exit.text | .init.data
* fromsec = .data
- * atsym = *_driver, *_ops, *_probe, *probe_one
+ * atsym = *_driver, *_template, *_sht, *_ops, *_probe, *probe_one
**/
static int secref_whitelist(const char *tosec, const char *fromsec,
- const char *atsym)
+ const char *atsym)
{
int f1 = 1, f2 = 1;
const char **s;
const char *pat2sym[] = {
"_driver",
+ "_template", /* scsi uses *_template a lot */
+ "_sht", /* scsi also used *_sht to some extent */
"_ops",
"_probe",
"_probe_one",
@@ -522,7 +524,8 @@ static int secref_whitelist(const char *tosec, const char *fromsec,
/* Check for pattern 2 */
if ((strcmp(tosec, ".init.text") != 0) &&
- (strcmp(tosec, ".exit.text") != 0))
+ (strcmp(tosec, ".exit.text") != 0) &&
+ (strcmp(tosec, ".init.data") != 0))
f2 = 0;
if (strcmp(fromsec, ".data") != 0)
f2 = 0;
@@ -820,6 +823,7 @@ static int exit_section(const char *name)
* For our future {in}sanity, add a comment that this is the ppc .opd
* section, not the ia64 .opd section.
* ia64 .opd should not point to discarded sections.
+ * [.rodata] like for .init.text we ignore .rodata references -same reason
**/
static int exit_section_ref_ok(const char *name)
{
@@ -829,6 +833,7 @@ static int exit_section_ref_ok(const char *name)
".exit.text",
".exit.data",
".init.text",
+ ".rodata",
".opd", /* See comment [OPD] */
".toc1", /* used by ppc64 */
".altinstructions",