[lttng-modules] Fix: the clock plugin must be initiated before first use of the clock

When building lttng inside the kernel the clock plugin must be initated
before the rest of the lttng code. Moved the module_init to
rootfs_initcall. The functionality will not change when built as a
module.

Signed-off-by: Anders Wallin <wallinux at gmail.com>
---
 tests/clock-plugin/lttng-clock-plugin-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Merged into lttng-modules master and stable-2.8, thanks!

Mathieu

----- On Jul 22, 2016, at 9:56 AM, Anders Wallin wallinux at gmail.com wrote:

> When building lttng inside the kernel the clock plugin must be initated
> before the rest of the lttng code. Moved the module_init to
> rootfs_initcall. The functionality will not change when built as a
> module.
> 
> Signed-off-by: Anders Wallin <wallinux at gmail.com>
> ---
> tests/clock-plugin/lttng-clock-plugin-test.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/clock-plugin/lttng-clock-plugin-test.c
> b/tests/clock-plugin/lttng-clock-plugin-test.c
> index f16ea64..bf81932 100644
> --- a/tests/clock-plugin/lttng-clock-plugin-test.c
> +++ b/tests/clock-plugin/lttng-clock-plugin-test.c
> @@ -67,7 +67,7 @@ int lttng_clock_plugin_init(void)
> {
> 	return lttng_clock_register_plugin(&ltc, THIS_MODULE);
> }
> -module_init(lttng_clock_plugin_init);
> +rootfs_initcall(lttng_clock_plugin_init);
> 
> static __exit
> void lttng_clock_plugin_exit(void)
> --
> 2.9.2
> 
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