Re: [RFC PATCH 5/5] kvm_main: replace debugfs with statsfs

[Randy Dunlap <rdunlap@infradead.org>]

On 4/27/20 7:18 AM, Emanuele Giuseppe Esposito wrote:
> Use statsfs API instead of debugfs to create sources and add values.
> 
> This also requires to change all architecture files to replace the old
> debugfs_entries with statsfs_vcpu_entries and statsfs_vm_entries.
> 
> The files/folders name and organization is kept unchanged, and a symlink
> in sys/kernel/debugfs/kvm is left for backward compatibility.
> 
> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
> ---
>  arch/arm64/kvm/guest.c          |   2 +-
>  arch/mips/kvm/mips.c            |   2 +-
>  arch/powerpc/kvm/book3s.c       |   6 +-
>  arch/powerpc/kvm/booke.c        |   8 +-
>  arch/s390/kvm/kvm-s390.c        |  16 +-
>  arch/x86/include/asm/kvm_host.h |   2 +-
>  arch/x86/kvm/Makefile           |   2 +-
>  arch/x86/kvm/debugfs.c          |  64 -------
>  arch/x86/kvm/statsfs.c          |  49 +++++
>  arch/x86/kvm/x86.c              |   6 +-
>  include/linux/kvm_host.h        |  39 +---
>  virt/kvm/arm/arm.c              |   2 +-
>  virt/kvm/kvm_main.c             | 314 ++++----------------------------
>  13 files changed, 130 insertions(+), 382 deletions(-)
>  delete mode 100644 arch/x86/kvm/debugfs.c
>  create mode 100644 arch/x86/kvm/statsfs.c


You might want to select STATS_FS here (or depend on it if it is required),
or you could provide stubs in <linux/statsfs.h> for the cases of STATS_FS
is not set/enabled.

-- 
~Randy