Hi Mark,
Thanks for the comments.
On 2018/5/31 18:52, Mark Rutland wrote:
> On Thu, May 31, 2018 at 08:41:45PM +0800, Dongjiu Geng wrote:
>> +#ifdef CONFIG_ACPI_APEI_SEI
>> +static LIST_HEAD(ghes_sei);
>> +
>> +/*
>> + * Return 0 only if one of the SEI error sources successfully reported an error
>> + * record sent from the firmware.
>> + */
>> +int ghes_notify_sei(void)
>> +{
>> + struct ghes *ghes;
>> + int ret = -ENOENT;
>> +
>> + rcu_read_lock();
>> + list_for_each_entry_rcu(ghes, &ghes_sei, list) {
>> + if (!ghes_proc(ghes))
>> + ret = 0;
>> + }
>> + rcu_read_unlock();
>> + return ret;
>> +}
>> +
>> +static void ghes_sei_add(struct ghes *ghes)
>> +{
>> + mutex_lock(&ghes_list_mutex);
>> + list_add_rcu(&ghes->list, &ghes_sei);
>> + mutex_unlock(&ghes_list_mutex);
>> +}
>> +
>> +static void ghes_sei_remove(struct ghes *ghes)
>> +{
>> + mutex_lock(&ghes_list_mutex);
>> + list_del_rcu(&ghes->list);
>> + mutex_unlock(&ghes_list_mutex);
>> + synchronize_rcu();
>> +}
>> +#else /* CONFIG_ACPI_APEI_SEI */
>> +static inline void ghes_sei_add(struct ghes *ghes) { }
>> +static inline void ghes_sei_remove(struct ghes *ghes) { }
>> +#endif /* CONFIG_ACPI_APEI_SEI */
>> +
>> #ifdef CONFIG_HAVE_ACPI_APEI_NMI
>> /*
>
>> index 8feb0c8..9ba59e2 100644
>> --- a/include/acpi/ghes.h
>> +++ b/include/acpi/ghes.h
>> @@ -120,5 +120,6 @@ static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
>> section = acpi_hest_get_next(section))
>>
>> int ghes_notify_sea(void);
>> +int ghes_notify_sei(void);
>
> It would be nice to have a stub definition when !CONFIG_ACPI_APEI_SEI,
> e.g.
>
> #ifdef CONFIG_ACPI_APEI_SEI
> int ghes_notify_sei(void);
> #else
> static in int ghes_notify_sei(void) { return -ENOENT; }
> #endif
>
> ... as callers could simply call this without additional checks.
>
> As a cleanup, similar would be nice for ghes_notify_sea() with
> CONFIG_ACPI_APEI_SEA.
I think your suggestion is better, I will do the cleanup include the ghes_notify_sea().
thanks again.
>
> Thanks,
> Mark.
>
> .
>
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