[RFC PATCH 03/14] samples/damon/mtier: replace damon_add_region() with damon_set_regions()

[SeongJae Park <sj@kernel.org>]

mtier DAMON sample module and DAMON virtual address operation set
(vaddr) unit tests are using damon_add_region() for setup of DAMON
monitoring target region boundaries setup.  But, damon_set_regions() is
designed for exactly the purpose.  All other DAMON API callers use the
function for the purpose.  Replace damon_add_region() usage in mtier
sample module with damon_set_regions(), for unifying the use case and
reducing the maintenance cost.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 samples/damon/mtier.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/samples/damon/mtier.c b/samples/damon/mtier.c
index 775838a23d935..eb1143de8df17 100644
--- a/samples/damon/mtier.c
+++ b/samples/damon/mtier.c
@@ -75,11 +75,11 @@ static struct damon_ctx *damon_sample_mtier_build_ctx(bool promote)
 	struct damon_ctx *ctx;
 	struct damon_attrs attrs;
 	struct damon_target *target;
-	struct damon_region *region;
 	struct damos *scheme;
 	struct damos_quota_goal *quota_goal;
 	struct damos_filter *filter;
 	struct region_range addr;
+	struct damon_addr_range range;
 	int ret;
 
 	ctx = damon_new_ctx();
@@ -120,10 +120,12 @@ static struct damon_ctx *damon_sample_mtier_build_ctx(bool promote)
 		addr.end = promote ? node1_end_addr : node0_end_addr;
 	}
 
-	region = damon_new_region(addr.start, addr.end);
-	if (!region)
+	range.start = addr.start;
+	range.end = addr.end;
+
+	ret = damon_set_regions(target, &range, 1, DAMON_MIN_REGION_SZ);
+	if (ret)
 		goto free_out;
-	damon_add_region(region, target);
 
 	scheme = damon_new_scheme(
 			/* access pattern */
-- 
2.47.3