Commit 5257f36e authored by SeongJae Park's avatar SeongJae Park Committed by Linus Torvalds
Browse files

mm/damon/core: add number of each enum type values 

This commit declares the number of legal values for each DAMON enum types
to make traversals of such DAMON enum types easy and safe.

Link: https://lkml.kernel.org/r/20220228081314.5770-3-sj@kernel.org


Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Xin Hao <xhao@linux.alibaba.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8b9b0d33

include/linux/damon.h

+4 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ struct damon_target { 
 * @DAMOS_HUGEPAGE:	Call ``madvise()`` for the region with MADV_HUGEPAGE.

 * @DAMOS_NOHUGEPAGE:	Call ``madvise()`` for the region with MADV_NOHUGEPAGE.

 * @DAMOS_STAT:		Do nothing but count the stat.

 * @NR_DAMOS_ACTIONS:	Total number of DAMOS actions

 */

enum damos_action {

	DAMOS_WILLNEED,
@@ -95,6 +96,7 @@ enum damos_action { 
	DAMOS_HUGEPAGE,

	DAMOS_NOHUGEPAGE,

	DAMOS_STAT,		/* Do nothing but only record the stat */

	NR_DAMOS_ACTIONS,

};



/**
@@ -157,10 +159,12 @@ struct damos_quota { 
 *

 * @DAMOS_WMARK_NONE:		Ignore the watermarks of the given scheme.

 * @DAMOS_WMARK_FREE_MEM_RATE:	Free memory rate of the system in [0,1000].

 * @NR_DAMOS_WMARK_METRICS:	Total number of DAMOS watermark metrics

 */

enum damos_wmark_metric {

	DAMOS_WMARK_NONE,

	DAMOS_WMARK_FREE_MEM_RATE,

	NR_DAMOS_WMARK_METRICS,

};



/**