Re: [PATCH] rcu: fix section mismatch

From: Sam Ravnborg
Date: Sat Jan 19 2008 - 16:26:06 EST


On Sat, Jan 19, 2008 at 11:56:43AM -0800, Randy Dunlap wrote:
> From: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
>
> rcu_online_cpu() should be __cpuinit instead of __devinit.
>
> WARNING: vmlinux.o(.text+0x4b6d5): Section mismatch: reference to .init.text: (between 'rcu_cpu_notify' and 'wakeme_after_rcu')
>
> Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>

So if we have:
CONFIG_HOTPLUG=n
CONFIG_HOTPLUG_CPU=y

then this is a oops candidate.

Andrew - this looks like a 2.6.24 candidate.

Sam


> ---
> kernel/rcupdate.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- linux-2.6.24-rc8-git2.orig/kernel/rcupdate.c
> +++ linux-2.6.24-rc8-git2/kernel/rcupdate.c
> @@ -549,7 +549,7 @@ static void rcu_init_percpu_data(int cpu
> rdp->blimit = blimit;
> }
>
> -static void __devinit rcu_online_cpu(int cpu)
> +static void __cpuinit rcu_online_cpu(int cpu)
> {
> struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
> struct rcu_data *bh_rdp = &per_cpu(rcu_bh_data, cpu);
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