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-rw-r--r--fs/xfs/scrub/stats.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/fs/xfs/scrub/stats.h b/fs/xfs/scrub/stats.h
new file mode 100644
index 0000000000..b358ad8d8b
--- /dev/null
+++ b/fs/xfs/scrub/stats.h
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2023 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@kernel.org>
+ */
+#ifndef __XFS_SCRUB_STATS_H__
+#define __XFS_SCRUB_STATS_H__
+
+struct xchk_stats_run {
+ u64 scrub_ns;
+ u64 repair_ns;
+ unsigned int retries;
+ bool repair_attempted;
+ bool repair_succeeded;
+};
+
+#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS
+struct xchk_stats;
+
+int __init xchk_global_stats_setup(struct dentry *parent);
+void xchk_global_stats_teardown(void);
+
+int xchk_mount_stats_alloc(struct xfs_mount *mp);
+void xchk_mount_stats_free(struct xfs_mount *mp);
+
+void xchk_stats_register(struct xchk_stats *cs, struct dentry *parent);
+void xchk_stats_unregister(struct xchk_stats *cs);
+
+void xchk_stats_merge(struct xfs_mount *mp, const struct xfs_scrub_metadata *sm,
+ const struct xchk_stats_run *run);
+
+static inline u64 xchk_stats_now(void) { return ktime_get_ns(); }
+static inline u64 xchk_stats_elapsed_ns(u64 since)
+{
+ u64 now = xchk_stats_now();
+
+ /*
+ * If the system doesn't have a high enough resolution clock, charge at
+ * least one nanosecond so that our stats don't report instantaneous
+ * runtimes.
+ */
+ if (now == since)
+ return 1;
+
+ return now - since;
+}
+#else
+# define xchk_global_stats_setup(parent) (0)
+# define xchk_global_stats_teardown() ((void)0)
+# define xchk_mount_stats_alloc(mp) (0)
+# define xchk_mount_stats_free(mp) ((void)0)
+# define xchk_stats_register(cs, parent) ((void)0)
+# define xchk_stats_unregister(cs) ((void)0)
+# define xchk_stats_now() (0)
+# define xchk_stats_elapsed_ns(x) (0 * (x))
+# define xchk_stats_merge(mp, sm, run) ((void)0)
+#endif /* CONFIG_XFS_ONLINE_SCRUB_STATS */
+
+#endif /* __XFS_SCRUB_STATS_H__ */