The xe_bo_shrink_kunit test has an uninitialized value and illegal integer size conversions on 32-bit. Fix. v2: - Use div64_u64 to ensure the u64 division compiles everywhere. (Matt Auld) Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx> Closes: https://lore.kernel.org/20240913195649.GA61514@thelio-3990X/ Fixes: 5a90b60db5e6 ("drm/xe: Add a xe_bo subtest for shrinking / swapping") Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: Matthew Auld <matthew.auld@xxxxxxxxx> Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> #v1 Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/xe/tests/xe_bo.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/tests/xe_bo.c b/drivers/gpu/drm/xe/tests/xe_bo.c index 7d3fd720478b..cd811aa2b227 100644 --- a/drivers/gpu/drm/xe/tests/xe_bo.c +++ b/drivers/gpu/drm/xe/tests/xe_bo.c @@ -7,6 +7,7 @@ #include <kunit/visibility.h> #include <linux/iosys-map.h> +#include <linux/math64.h> #include <linux/random.h> #include <linux/swap.h> @@ -440,7 +441,7 @@ static int shrink_test_run_device(struct xe_device *xe) LIST_HEAD(bos); struct xe_bo_link *link, *next; struct sysinfo si; - size_t ram, ram_and_swap, purgeable, alloced, to_alloc, limit; + u64 ram, ram_and_swap, purgeable = 0, alloced, to_alloc, limit; unsigned int interrupted = 0, successful = 0, count = 0; struct rnd_state prng; u64 rand_seed; @@ -469,7 +470,7 @@ static int shrink_test_run_device(struct xe_device *xe) ram_and_swap = ram + get_nr_swap_pages() * PAGE_SIZE; if (to_alloc > ram_and_swap) purgeable = to_alloc - ram_and_swap; - purgeable += purgeable / 5; + purgeable += div64_u64(purgeable, 5); kunit_info(test, "Free ram is %lu bytes. Will allocate twice of that.\n", (unsigned long)ram); -- 2.46.0
