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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/infiniband/hw/qib/qib_debugfs.c
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@@ -66,15 +66,6 @@
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 	.release = seq_release \
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 };
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-#define DEBUGFS_FILE_CREATE(name) \
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-do { \
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-	struct dentry *ent; \
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-	ent = debugfs_create_file(#name , 0400, ibd->qib_ibdev_dbg, \
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-		ibd, &_##name##_file_ops); \
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-	if (!ent) \
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-		pr_warn("create of " #name " failed\n"); \
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-} while (0)
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-
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 static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
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 {
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 	struct qib_opcode_stats_perctx *opstats;
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@@ -249,17 +240,17 @@
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 void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
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 {
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+	struct dentry *root;
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 	char name[10];
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 	snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
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-	ibd->qib_ibdev_dbg = debugfs_create_dir(name, qib_dbg_root);
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-	if (!ibd->qib_ibdev_dbg) {
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-		pr_warn("create of %s failed\n", name);
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-		return;
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-	}
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-	DEBUGFS_FILE_CREATE(opcode_stats);
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-	DEBUGFS_FILE_CREATE(ctx_stats);
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-	DEBUGFS_FILE_CREATE(qp_stats);
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+	root = debugfs_create_dir(name, qib_dbg_root);
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+	ibd->qib_ibdev_dbg = root;
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+
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+	debugfs_create_file("opcode_stats", 0400, root, ibd,
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+			    &_opcode_stats_file_ops);
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+	debugfs_create_file("ctx_stats", 0400, root, ibd, &_ctx_stats_file_ops);
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+	debugfs_create_file("qp_stats", 0400, root, ibd, &_qp_stats_file_ops);
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 }
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 void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
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@@ -274,8 +265,6 @@
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 void qib_dbg_init(void)
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 {
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 	qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
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-	if (!qib_dbg_root)
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-		pr_warn("init of debugfs failed\n");
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 }
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 void qib_dbg_exit(void)