On Mon, 20 May 2013 14:48:05 +0800, Chen Gang <gang.c...@asianux.com>
wrote:
> Need 'EXPORT_SYMBOL_GPL(read_current_timer)' if build with allmodconfig.
>
> The related error:
> ERROR: "read_current_timer" [lib/rbtree_test.ko] undefined!
> ERROR: "read_current_timer" [lib/interval_tree_test.ko] undefined!
> ERROR: "read_current_timer" [fs/ext4/ext4.ko] undefined!
> ERROR: "read_current_timer" [crypto/tcrypt.ko] undefined!
>
>
> Signed-off-by: Chen Gang <gang.c...@asianux.com>
> ---
> arch/arm64/kernel/time.c | 1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c
> index a551f88..7fcba80 100644
> --- a/arch/arm64/kernel/time.c
> +++ b/arch/arm64/kernel/time.c
> @@ -73,6 +73,7 @@ int read_current_timer(unsigned long *timer_value)
> *timer_value = arch_timer_read_counter();
> return 0;
> }
> +EXPORT_SYMBOL_GPL(read_current_timer);
>
> void __init time_init(void)
> {
While this solves the problem, I'm not sure this is the best fix. The real
issue is with get_cycles, which is a macro around read_current_timer.
AArch32 exports it because of the number of timer implementations. On
arm64, we should be able to just return CNTVCT_EL0.
Catalin, Will, what do you think?
M.
--
Fast, cheap, reliable. Pick two.
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