[PATCH v11 03/10] ref_tracker: add a top level debugfs directory for ref_tracker
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SUPERSEDED: 1 (1M)
From: Jeff Layton <jlayton@kernel.org>
Date: 2025-05-28 14:34:54
Also in:
dri-devel, intel-gfx, lkml
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
Revision v11 of 14 in this series; 1 review trailer.
Revisions (14)
Add a new "ref_tracker" directory in debugfs. Each individual refcount tracker can register files under there to display info about currently-held references. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jeff Layton <jlayton@kernel.org> --- lib/ref_tracker.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c
index de71439e12a3bab6456910986fa611dfbdd97980..34ac37db209077d6771d5f4367e53d19ba3169c6 100644
--- a/lib/ref_tracker.c
+++ b/lib/ref_tracker.c@@ -273,3 +273,19 @@ int ref_tracker_free(struct ref_tracker_dir *dir, return 0; } EXPORT_SYMBOL_GPL(ref_tracker_free); + +#ifdef CONFIG_DEBUG_FS +#include <linux/debugfs.h> + +static struct dentry *ref_tracker_debug_dir = (struct dentry *)-ENOENT; + +static int __init ref_tracker_debugfs_init(void) +{ + ref_tracker_debug_dir = debugfs_create_dir("ref_tracker", NULL); + if (IS_ERR(ref_tracker_debug_dir)) + pr_warn("ref_tracker: unable to create debugfs ref_tracker directory: %pe\n", + ref_tracker_debug_dir); + return 0; +} +late_initcall(ref_tracker_debugfs_init); +#endif /* CONFIG_DEBUG_FS */
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2.49.0