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authorPeter Chubb <peterc@gelato.unsw.edu.au>2007-08-10 13:01:10 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-08-11 15:47:42 -0700
commitcd5bfea278987ebfe60f3ff92a01696b17c4f978 (patch)
tree737764f3ab9588b7f00508a8b96160261d76d7ac
parenttimer: remove clockevents_unregister_notifier (diff)
downloadlinux-dev-cd5bfea278987ebfe60f3ff92a01696b17c4f978.tar.xz
linux-dev-cd5bfea278987ebfe60f3ff92a01696b17c4f978.zip
fix compilation with gcc 4.2
gcc-4.2 is a lot more picky about its symbol handling. EXPORT_SYMBOL no longer works on symbols that are undefined or defined with static scope. For example, with CONFIG_PROFILE off, I see: kernel/profile.c:206: error: __ksymtab_profile_event_unregister causes a section type conflict kernel/profile.c:205: error: __ksymtab_profile_event_register causes a section type conflict This patch moves the EXPORTs inside the #ifdef CONFIG_PROFILE, so we only try to export symbols that are defined. Also, in kernel/kprobes.c there's an EXPORT_SYMBOL_GPL() for jprobes_return, which if CONFIG_JPROBES is undefined is a static inline and gives the same error. And in drivers/acpi/resources/rsxface.c, there's an ACPI_EXPORT_SYMBOPL() for a static symbol. If it's static, it's not accessible from outside the compilation unit, so should bot be exported. These three changes allow building a zx1_defconfig kernel with gcc 4.2 on IA64. [akpm@linux-foundation.org: export jpobe_return properly] Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/acpi/resources/rsxface.c2
-rw-r--r--kernel/kprobes.c5
-rw-r--r--kernel/profile.c4
3 files changed, 7 insertions, 4 deletions
diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/resources/rsxface.c
index f63813a358c5..4c3fd4cdaf73 100644
--- a/drivers/acpi/resources/rsxface.c
+++ b/drivers/acpi/resources/rsxface.c
@@ -474,8 +474,6 @@ acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
return (AE_CTRL_TERMINATE);
}
-ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
-
/*******************************************************************************
*
* FUNCTION: acpi_walk_resources
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3e9f513a728d..4b8a4493c541 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1063,6 +1063,11 @@ EXPORT_SYMBOL_GPL(register_kprobe);
EXPORT_SYMBOL_GPL(unregister_kprobe);
EXPORT_SYMBOL_GPL(register_jprobe);
EXPORT_SYMBOL_GPL(unregister_jprobe);
+#ifdef CONFIG_KPROBES
EXPORT_SYMBOL_GPL(jprobe_return);
+#endif
+
+#ifdef CONFIG_KPROBES
EXPORT_SYMBOL_GPL(register_kretprobe);
EXPORT_SYMBOL_GPL(unregister_kretprobe);
+#endif
diff --git a/kernel/profile.c b/kernel/profile.c
index 5b20fe977bed..cb1e37d2dac3 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -199,11 +199,11 @@ EXPORT_SYMBOL_GPL(register_timer_hook);
EXPORT_SYMBOL_GPL(unregister_timer_hook);
EXPORT_SYMBOL_GPL(task_handoff_register);
EXPORT_SYMBOL_GPL(task_handoff_unregister);
+EXPORT_SYMBOL_GPL(profile_event_register);
+EXPORT_SYMBOL_GPL(profile_event_unregister);
#endif /* CONFIG_PROFILING */
-EXPORT_SYMBOL_GPL(profile_event_register);
-EXPORT_SYMBOL_GPL(profile_event_unregister);
#ifdef CONFIG_SMP
/*