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mm/damon/tests/core-kunit: remove DAMON_MIN_REGION redefinition 

A few DAMON core functions including damon_set_regions() were hard-coded
to use DAMON_MIN_REGION as their regions management granularity.  For
simple and human-readable unit tests' expectations, DAMON core layer kunit
test re-defines DAMON_MIN_REGION to '1'.

A previous patch series [1] has removed the hard-coded part but kept the
redefinition and updated related function calls to explicitly use
DAMON_MIN_REGION.  Remove the unnecessary redefinition and update relevant
function calls to pass literals (number '1') instead of the
DAMON_MIN_REGION.

Link: https://lkml.kernel.org/r/20251112154114.66053-7-sj@kernel.org
Link: https://lore.kernel.org/20250828171242.59810-1-sj@kernel.org [1]
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Bill Wendling <morbo@google.com>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@google.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2025-11-12 07:41:09 -08:00 committed by Andrew Morton
parent 09efc56a3b
commit 10e8c7ba64
2 changed files with 26 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
mm/damon/core.c
View File

@ -20,11 +20,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/damon.h>
#ifdef CONFIG_DAMON_KUNIT_TEST
#undef DAMON_MIN_REGION
#define DAMON_MIN_REGION 1
#endif
static DEFINE_MUTEX(damon_lock);
static int nr_running_ctxs;
static bool running_exclusive_ctxs;

55
mm/damon/tests/core-kunit.h
View File

@ -279,7 +279,7 @@ static void damon_test_split_regions_of(struct kunit *test)
kunit_skip(test, "region alloc fail");
}
damon_add_region(r, t);
damon_split_regions_of(t, 2, DAMON_MIN_REGION);
damon_split_regions_of(t, 2, 1);
KUNIT_EXPECT_LE(test, damon_nr_regions(t), 2u);
damon_free_target(t);
@ -292,7 +292,7 @@ static void damon_test_split_regions_of(struct kunit *test)
kunit_skip(test, "second region alloc fail");
}
damon_add_region(r, t);
damon_split_regions_of(t, 4, DAMON_MIN_REGION);
damon_split_regions_of(t, 4, 1);
KUNIT_EXPECT_LE(test, damon_nr_regions(t), 4u);
damon_free_target(t);
}
@ -373,7 +373,7 @@ static void damon_test_set_regions(struct kunit *test)
damon_add_region(r1, t);
damon_add_region(r2, t);
damon_set_regions(t, &range, 1, DAMON_MIN_REGION);
damon_set_regions(t, &range, 1, 1);
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 3);
damon_for_each_region(r, t) {
@ -1037,15 +1037,14 @@ static void damos_test_filter_out(struct kunit *test)
f = damos_new_filter(DAMOS_FILTER_TYPE_ADDR, true, false);
if (!f)
kunit_skip(test, "filter alloc fail");
f->addr_range = (struct damon_addr_range){
.start = DAMON_MIN_REGION * 2, .end = DAMON_MIN_REGION * 6};
f->addr_range = (struct damon_addr_range){.start = 2, .end = 6};
t = damon_new_target();
if (!t) {
damos_destroy_filter(f);
kunit_skip(test, "target alloc fail");
}
r = damon_new_region(DAMON_MIN_REGION * 3, DAMON_MIN_REGION * 5);
r = damon_new_region(3, 5);
if (!r) {
damos_destroy_filter(f);
damon_free_target(t);
@ -1054,50 +1053,48 @@ static void damos_test_filter_out(struct kunit *test)
damon_add_region(r, t);
/* region in the range */
KUNIT_EXPECT_TRUE(test,
damos_filter_match(NULL, t, r, f, DAMON_MIN_REGION));
KUNIT_EXPECT_TRUE(test, damos_filter_match(NULL, t, r, f, 1));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);
/* region before the range */
r->ar.start = DAMON_MIN_REGION * 1;
r->ar.end = DAMON_MIN_REGION * 2;
r->ar.start = 1;
r->ar.end = 2;
KUNIT_EXPECT_FALSE(test,
damos_filter_match(NULL, t, r, f, DAMON_MIN_REGION));
damos_filter_match(NULL, t, r, f, 1));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);
/* region after the range */
r->ar.start = DAMON_MIN_REGION * 6;
r->ar.end = DAMON_MIN_REGION * 8;
r->ar.start = 6;
r->ar.end = 8;
KUNIT_EXPECT_FALSE(test,
damos_filter_match(NULL, t, r, f, DAMON_MIN_REGION));
damos_filter_match(NULL, t, r, f, 1));
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 1);
/* region started before the range */
r->ar.start = DAMON_MIN_REGION * 1;
r->ar.end = DAMON_MIN_REGION * 4;
KUNIT_EXPECT_FALSE(test,
damos_filter_match(NULL, t, r, f, DAMON_MIN_REGION));
r->ar.start = 1;
r->ar.end = 4;
KUNIT_EXPECT_FALSE(test, damos_filter_match(NULL, t, r, f, 1));
/* filter should have split the region */
KUNIT_EXPECT_EQ(test, r->ar.start, DAMON_MIN_REGION * 1);
KUNIT_EXPECT_EQ(test, r->ar.end, DAMON_MIN_REGION * 2);
KUNIT_EXPECT_EQ(test, r->ar.start, 1);
KUNIT_EXPECT_EQ(test, r->ar.end, 2);
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 2);
r2 = damon_next_region(r);
KUNIT_EXPECT_EQ(test, r2->ar.start, DAMON_MIN_REGION * 2);
KUNIT_EXPECT_EQ(test, r2->ar.end, DAMON_MIN_REGION * 4);
KUNIT_EXPECT_EQ(test, r2->ar.start, 2);
KUNIT_EXPECT_EQ(test, r2->ar.end, 4);
damon_destroy_region(r2, t);
/* region started in the range */
r->ar.start = DAMON_MIN_REGION * 2;
r->ar.end = DAMON_MIN_REGION * 8;
r->ar.start = 2;
r->ar.end = 8;
KUNIT_EXPECT_TRUE(test,
damos_filter_match(NULL, t, r, f, DAMON_MIN_REGION));
damos_filter_match(NULL, t, r, f, 1));
/* filter should have split the region */
KUNIT_EXPECT_EQ(test, r->ar.start, DAMON_MIN_REGION * 2);
KUNIT_EXPECT_EQ(test, r->ar.end, DAMON_MIN_REGION * 6);
KUNIT_EXPECT_EQ(test, r->ar.start, 2);
KUNIT_EXPECT_EQ(test, r->ar.end, 6);
KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 2);
r2 = damon_next_region(r);
KUNIT_EXPECT_EQ(test, r2->ar.start, DAMON_MIN_REGION * 6);
KUNIT_EXPECT_EQ(test, r2->ar.end, DAMON_MIN_REGION * 8);
KUNIT_EXPECT_EQ(test, r2->ar.start, 6);
KUNIT_EXPECT_EQ(test, r2->ar.end, 8);
damon_destroy_region(r2, t);
damon_free_target(t);