On Mon, 30 Jan 2012 12:44:40 +0400, Dmitry Antipov <dmitry.anti...@linaro.org> 
wrote:
> Use ZERO_OR_NULL_PTR allocation pointer checking where allocation
> function may return ZERO_SIZE_PTR.
> 
> Signed-off-by: Dmitry Antipov <dmitry.anti...@linaro.org>
> ---
>  kernel/module.c |   12 ++++++------
>  1 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/kernel/module.c b/kernel/module.c
> index 2c93276..5183f91 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -438,7 +438,7 @@ static int percpu_modalloc(struct module *mod,
>       }
>  
>       mod->percpu = __alloc_reserved_percpu(size, align);
> -     if (!mod->percpu) {
> +     if (unlikely(ZERO_OR_NULL_PTR(mod->percpu))) {
>               printk(KERN_WARNING
>                      "%s: Could not allocate %lu bytes percpu data\n",
>                      mod->name, size);

printk() is marked __cold.  You don't need unlikely() here.

> @@ -2652,7 +2652,7 @@ static int move_module(struct module *mod, struct 
> load_info *info)
>        * after the module is initialized.
>        */
>       kmemleak_ignore(ptr);
> -     if (!ptr && mod->init_size) {
> +     if (unlikely(ZERO_OR_NULL_PTR(ptr)) && mod->init_size) {
>               module_free(mod, mod->module_core);
>               return -ENOMEM;
>       }

You want to just change this to:

        if (!ptr) {

Thanks,
Rusty.

_______________________________________________
linaro-dev mailing list
linaro-dev@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-dev

Reply via email to