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| author | Peter Chubb <peterc@gelato.unsw.edu.au> | 2007-08-10 13:01:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-11 15:47:42 -0700 |
| commit | cd5bfea278987ebfe60f3ff92a01696b17c4f978 (patch) | |
| tree | 737764f3ab9588b7f00508a8b96160261d76d7ac /kernel/profile.c | |
| parent | 6ddfca9548d8ecc26096a30667423ba919109533 (diff) | |
| download | lwn-cd5bfea278987ebfe60f3ff92a01696b17c4f978.tar.gz lwn-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>
Diffstat (limited to 'kernel/profile.c')
| -rw-r--r-- | kernel/profile.c | 4 |
1 files changed, 2 insertions, 2 deletions
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 /* |