linux-kernel - [PATCH] proc: faster /proc/cmdline

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Message-ID: <20180309222948.GB3843@avx2>
Date:   Sat, 10 Mar 2018 01:29:48 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] proc: faster /proc/cmdline

Use seq_puts() and skip format string processing.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 fs/proc/cmdline.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/proc/cmdline.c
+++ b/fs/proc/cmdline.c
@@ -6,7 +6,8 @@
 
 static int cmdline_proc_show(struct seq_file *m, void *v)
 {
-	seq_printf(m, "%s\n", saved_command_line);
+	seq_puts(m, saved_command_line);
+	seq_putc(m, '\n');
 	return 0;
 }