linux-kernel - [PATCH 11/16] dynamic_debug: reduce lineno field to a saner 18 bits

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Message-Id: <7774228d1051026da271181920bb7adf3726e33b.1324318997.git.jbaron@redhat.com>
Date:	Mon, 19 Dec 2011 17:12:59 -0500
From:	Jason Baron <jbaron@...hat.com>
To:	greg@...ah.com
Cc:	jim.cromie@...il.com, joe@...ches.com, bart.vanassche@...il.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 11/16] dynamic_debug: reduce lineno field to a saner 18 bits

From: Jim Cromie <jim.cromie@...il.com>

lineno:24 allows files with 4 million lines, an insane file-size, even
for never-to-get-in-tree machine generated code.  Reduce this to 18
bits, which still allows 256k lines.  This is still insanely big, but
its not raving mad.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
Signed-off-by: Jason Baron <jbaron@...hat.com>
---
 include/linux/dynamic_debug.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index fc39640..7e3c53a 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -15,7 +15,7 @@ struct _ddebug {
 	const char *function;
 	const char *filename;
 	const char *format;
-	unsigned int lineno:24;
+	unsigned int lineno:18;
 	/*
  	 * The flags field controls the behaviour at the callsite.
  	 * The bits here are changed dynamically when the user
-- 
1.7.7.3

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