git.osdn.net Git - sagit-ice-cold/kernel_xiaomi

author	Michael Ellerman <mpe@ellerman.id.au>
	Tue, 16 Jan 2018 11:17:18 +0000 (22:17 +1100)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Fri, 16 Feb 2018 19:09:36 +0000 (20:09 +0100)
commit	b074e0bd527686da77d4c7efbe77ecc52c470234
tree	27741417876a31847240d41389a7fd57a903f252	tree \| snapshot
parent	1e8014e74b141979f0cf65bfabe9a077879b11a1	commit \| diff

powerpc/64s: Allow control of RFI flush via debugfs

commit 236003e6b5443c45c18e613d2b0d776a9f87540e upstream.

Expose the state of the RFI flush (enabled/disabled) via debugfs, and
allow it to be enabled/disabled at runtime.

eg: $ cat /sys/kernel/debug/powerpc/rfi_flush
    1
    $ echo 0 > /sys/kernel/debug/powerpc/rfi_flush
    $ cat /sys/kernel/debug/powerpc/rfi_flush
    0

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>