linux-kernel - [PATCH 21/21] bcachefs: bch2_fs_usage_base_to

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Date: Sat, 24 Feb 2024 21:38:23 -0500
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: linux-bcachefs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Kent Overstreet <kent.overstreet@...ux.dev>,
	djwong@...nel.org,
	bfoster@...hat.com
Subject: [PATCH 21/21] bcachefs: bch2_fs_usage_base_to_text()

Helper to show raw accounting in sysfs, mainly for debugging.

Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
---
 fs/bcachefs/sysfs.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/fs/bcachefs/sysfs.c b/fs/bcachefs/sysfs.c
index 10470cef30f0..27aca70cb385 100644
--- a/fs/bcachefs/sysfs.c
+++ b/fs/bcachefs/sysfs.c
@@ -205,6 +205,7 @@ read_attribute(disk_groups);
 read_attribute(has_data);
 read_attribute(alloc_debug);
 read_attribute(accounting);
+read_attribute(usage_base);
 
 #define x(t, n, ...) read_attribute(t);
 BCH_PERSISTENT_COUNTERS()
@@ -329,6 +330,20 @@ static void bch2_btree_wakeup_all(struct bch_fs *c)
 	seqmutex_unlock(&c->btree_trans_lock);
 }
 
+static void bch2_fs_usage_base_to_text(struct printbuf *out, struct bch_fs *c)
+{
+	struct bch_fs_usage_base b = {};
+
+	acc_u64s_percpu(&b.hidden, &c->usage->hidden, sizeof(b) / sizeof(u64));
+
+	prt_printf(out, "hidden:\t\t%llu\n",	b.hidden);
+	prt_printf(out, "btree:\t\t%llu\n",	b.btree);
+	prt_printf(out, "data:\t\t%llu\n",	b.data);
+	prt_printf(out, "cached:\t%llu\n",	b.cached);
+	prt_printf(out, "reserved:\t\t%llu\n",	b.reserved);
+	prt_printf(out, "nr_inodes:\t%llu\n",	b.nr_inodes);
+}
+
 SHOW(bch2_fs)
 {
 	struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
@@ -417,6 +432,9 @@ SHOW(bch2_fs)
 	if (attr == &sysfs_accounting)
 		bch2_fs_accounting_to_text(out, c);
 
+	if (attr == &sysfs_usage_base)
+		bch2_fs_usage_base_to_text(out, c);
+
 	return 0;
 }
 
@@ -630,6 +648,7 @@ struct attribute *bch2_fs_internal_files[] = {
 
 	&sysfs_disk_groups,
 	&sysfs_accounting,
+	&sysfs_usage_base,
 	NULL
 };
 
-- 
2.43.0