Messages in this thread Patch in this message | | | Date | Tue, 26 Jun 2007 12:01:34 -0700 | From | Randy Dunlap <> | Subject | Re: [Bug 8679] New: Section mismatch: reference to .init.text |
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On Tue, 26 Jun 2007 10:46:36 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=8679 > > Summary: Section mismatch: reference to .init.text > Product: Other > Version: 2.5 > KernelVersion: 2.6.22-rc6 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Configuration > AssignedTo: zippel@linux-m68k.org > ReportedBy: wbrana@gmail.com > > > Software Environment: > gcc 3.4.6, binutils 2.17 > > Problem Description: > Warnings appeared while building kernel: > > WARNING: arch/i386/kernel/built-in.o(.data+0x2148): Section mismatch: reference > to .init.text: (between 'thermal_throttle_cpu_notifier' and 'mtrr_mutex') > WARNING: kernel/built-in.o(.text+0x15f84): Section mismatch: reference to > .init.text: (between 'kthreadd' and 'init_waitqueue_head')
I don't see the kernel/built-in.o warning when I build this (I have binutils 2.16++). Can you test the patch below to verify that it fixes the warning?
On the other warning ('thermal_throttle_cpu_notifier'), we have:
static struct notifier_block thermal_throttle_cpu_notifier = { .notifier_call = thermal_throttle_cpu_callback, };
where CONFIG_CPU_HOTPLUG=n, so __cpuinit == __init in:
static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
so CPU hotplug actions should never happen here. Still, we have a registered notifier that is in __init space and has been discarded... :( Any suggestions out there?
--- From: Randy Dunlap <randy.dunlap@oracle.com>
kthreadd_setup() is in an __init section, but we know that it's safe to be called from kthreadd() since the latter is only called at kernel init time, so mark kthreadd_setup() __init_refok so that modpost won't complain about what text section it is in.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> --- kernel/kthread.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.22-rc6.orig/kernel/kthread.c +++ linux-2.6.22-rc6/kernel/kthread.c @@ -215,7 +215,7 @@ int kthread_stop(struct task_struct *k) EXPORT_SYMBOL(kthread_stop); -static __init void kthreadd_setup(void) +static __init_refok void kthreadd_setup(void) { struct task_struct *tsk = current; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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