On Tue, Apr 9, 2019 at 6:55 PM Aubrey Li <[email protected]> wrote:
>
> The architecture specific information of the running processes could
> be useful to the userland. Add support to examine process architecture
> specific information externally.
>
> Signed-off-by: Aubrey Li <[email protected]>
> Cc: Peter Zijlstra <[email protected]>
> Cc: Andi Kleen <[email protected]>
> Cc: Tim Chen <[email protected]>
> Cc: Dave Hansen <[email protected]>
> Cc: Arjan van de Ven <[email protected]>
> Cc: Linux API <[email protected]>
> Cc: Alexey Dobriyan <[email protected]>
> Cc: Andrew Morton <[email protected]>
> ---
> fs/proc/array.c | 5 +++++
> include/linux/proc_fs.h | 2 ++
> 2 files changed, 7 insertions(+)
>
> diff --git a/fs/proc/array.c b/fs/proc/array.c
> index 2edbb657f859..331592a61718 100644
> --- a/fs/proc/array.c
> +++ b/fs/proc/array.c
> @@ -401,6 +401,10 @@ static inline void task_thp_status(struct seq_file *m,
> struct mm_struct *mm)
> seq_printf(m, "THP_enabled:\t%d\n", thp_enabled);
> }
>
> +void __weak arch_proc_pid_status(struct seq_file *m, struct task_struct
> *task)
> +{
> +}
This pointlessly bloats other architectures. Do this instead in an
appropriate header:
#ifndef arch_proc_pid_status
static inline void arch_proc_pid_status(...)
{
}
#endif
Or add /proc/PID/x86_status, which sounds better in most respects to me.
