From: Robert Read <rread@datarithm.net>
To: linux-kernel@vger.kernel.org
Subject: [PATCH] configurable printk buffer size
Date: Tue, 20 Feb 2001 14:17:42 -0800 [thread overview]
Message-ID: <20010220141742.D4106@tenchi.datarithm.net> (raw)
In-Reply-To: <3A92A99E.2F255CB3@yk.rim.or.jp> <20010220111542.A4106@tenchi.datarithm.net> <3A92C76C.6519DF1A@cypress.com> <20010220121727.B4106@tenchi.datarithm.net> <3A92D930.6F11B505@cypress.com> <20010220140515.C4106@tenchi.datarithm.net>
In-Reply-To: <20010220140515.C4106@tenchi.datarithm.net>; from rread@datarithm.net on Tue, Feb 20, 2001 at 02:05:15PM -0800
[-- Attachment #1: Type: text/plain, Size: 221 bytes --]
The obvious solution struck me just after the last email. I change
the config parameter to be an order, like the argument to
get_free_pages(). How does this look? It's not tested, but there
isn't much to it...
robert
[-- Attachment #2: printk-buflen.patch --]
[-- Type: text/plain, Size: 930 bytes --]
diff --exclude=*~ -ru linux-2.4.2-pre4/arch/i386/config.in linux-2.4.2-pre4-logbuf/arch/i386/config.in
--- linux-2.4.2-pre4/arch/i386/config.in Mon Jan 8 13:27:56 2001
+++ linux-2.4.2-pre4-logbuf/arch/i386/config.in Tue Feb 20 14:10:12 2001
@@ -366,4 +366,5 @@
#bool 'Debug kmalloc/kfree' CONFIG_DEBUG_MALLOC
bool 'Magic SysRq key' CONFIG_MAGIC_SYSRQ
+int 'Printk buffer size order 2**x' CONFIG_PRINTK_BUF_ORDER 14
endmenu
diff --exclude=*~ -ru linux-2.4.2-pre4/kernel/printk.c linux-2.4.2-pre4-logbuf/kernel/printk.c
--- linux-2.4.2-pre4/kernel/printk.c Tue Feb 20 11:56:31 2001
+++ linux-2.4.2-pre4-logbuf/kernel/printk.c Tue Feb 20 14:10:06 2001
@@ -23,7 +23,11 @@
#include <asm/uaccess.h>
-#define LOG_BUF_LEN (16384)
+#ifdef CONFIG_PRINTK_BUF_LEN
+# define LOG_BUF_LEN (2**CONFIG_PRINTK_BUF_ORDER)
+#else
+# define LOG_BUF_LEN (16384)
+#endif
#define LOG_BUF_MASK (LOG_BUF_LEN-1)
static char buf[1024];
next prev parent reply other threads:[~2001-02-20 22:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-20 17:30 kernel/printk.c: increasing the buffer size to capture devfsd debug messages Ishikawa
2001-02-20 19:15 ` Robert Read
2001-02-20 19:37 ` Thomas Dodd
2001-02-20 20:17 ` [PATCH] " Robert Read
2001-02-20 20:53 ` Thomas Dodd
2001-02-20 21:03 ` Thomas Dodd
2001-02-20 22:05 ` Robert Read
2001-02-20 22:17 ` Robert Read [this message]
2001-02-20 21:27 ` Ishikawa
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