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Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF00004FBB.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9134 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The values in the `page_pool_shrink` debugfs file should recognize the sentinels rather than causing an underflow. Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5218 Signed-off-by: Mario Limonciello --- drivers/gpu/drm/ttm/ttm_pool.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c index 26a3689e5fd90..4e83f4978b136 100644 --- a/drivers/gpu/drm/ttm/ttm_pool.c +++ b/drivers/gpu/drm/ttm/ttm_pool.c @@ -1335,15 +1335,22 @@ static int ttm_pool_debugfs_shrink_show(struct seq_file *m, void *data) .gfp_mask = GFP_NOFS, .nr_to_scan = TTM_SHRINKER_BATCH, }; - unsigned long count; + unsigned long count, scanned; int nid; fs_reclaim_acquire(GFP_KERNEL); for_each_node(nid) { sc.nid = nid; count = ttm_pool_shrinker_count(mm_shrinker, &sc); - seq_printf(m, "%d: %lu/%lu\n", nid, count, - ttm_pool_shrinker_scan(mm_shrinker, &sc)); + scanned = ttm_pool_shrinker_scan(mm_shrinker, &sc); + + /* Convert shrinker API sentinel values to 0 for debugfs output */ + if (count == SHRINK_EMPTY) + count = 0; + if (scanned == SHRINK_STOP) + scanned = 0; + + seq_printf(m, "%d: %lu/%lu\n", nid, count, scanned); } fs_reclaim_release(GFP_KERNEL); -- 2.43.0