samples/damon/mtier: replace damon_add_region() with damon_set_regions()

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.

Link: https://lore.kernel.org/20260522154026.80546-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/samples/damon/mtier.c b/samples/damon/mtier.c
index 775838a23d935366a12ea8adb925bf39eb0f9778..eb1143de8df17e4d7f9b16b9f68e3ecd92ddcc62 100644 (file)
--- 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 */