linux-kernel - [PATCH 1/7] seq_buf: seq_buf_human_readable

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Date:   Wed, 22 Nov 2023 18:25:06 -0500
From:   Kent Overstreet <kent.overstreet@...ux.dev>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Kent Overstreet <kent.overstreet@...ux.dev>
Subject: [PATCH 1/7] seq_buf: seq_buf_human_readable_u64()

This adds a seq_buf wrapper for string_get_size().

Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
---
 include/linux/seq_buf.h |  4 ++++
 lib/seq_buf.c           | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h
index 5fb1f12c33f9..dfcd0f367d6a 100644
--- a/include/linux/seq_buf.h
+++ b/include/linux/seq_buf.h
@@ -171,4 +171,8 @@ seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary);
 
 void seq_buf_do_printk(struct seq_buf *s, const char *lvl);
 
+enum string_size_units;
+void seq_buf_human_readable_u64(struct seq_buf *s, u64 v,
+				const enum string_size_units units);
+
 #endif /* _LINUX_SEQ_BUF_H */
diff --git a/lib/seq_buf.c b/lib/seq_buf.c
index 010c730ca7fc..9d4e4d5f43b4 100644
--- a/lib/seq_buf.c
+++ b/lib/seq_buf.c
@@ -425,3 +425,13 @@ int seq_buf_hex_dump(struct seq_buf *s, const char *prefix_str, int prefix_type,
 	}
 	return 0;
 }
+
+void seq_buf_human_readable_u64(struct seq_buf *s, u64 v, const enum string_size_units units)
+{
+	char *buf;
+	size_t size = seq_buf_get_buf(s, &buf);
+	int wrote = string_get_size(v, 1, units, buf, size);
+
+	seq_buf_commit(s, wrote);
+}
+EXPORT_SYMBOL(seq_buf_human_readable_u64);
-- 
2.42.0