lkml.org 
[lkml]   [2005]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 6/8] lib/sort: Replace insertion sort in exception tables
Replace exception table insertion sort with lib/sort

Signed-off-by: Matt Mackall <mpm@selenic.com>

Index: mm2/lib/extable.c
===================================================================
--- mm2.orig/lib/extable.c 2005-01-30 20:33:18.000000000 -0800
+++ mm2/lib/extable.c 2005-01-30 20:40:53.000000000 -0800
@@ -13,6 +13,7 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/sort.h>
#include <asm/uaccess.h>

extern struct exception_table_entry __start___ex_table[];
@@ -25,26 +26,17 @@
* This is used both for the kernel exception table and for
* the exception tables of modules that get loaded.
*/
+static int cmp_ex(const void *a, const void *b)
+{
+ const struct exception_table_entry *x = a, *y = b;
+ return x->insn - y->insn;
+}
+
void sort_extable(struct exception_table_entry *start,
struct exception_table_entry *finish)
{
- struct exception_table_entry el, *p, *q;
-
- /* insertion sort */
- for (p = start + 1; p < finish; ++p) {
- /* start .. p-1 is sorted */
- if (p[0].insn < p[-1].insn) {
- /* move element p down to its right place */
- el = *p;
- q = p;
- do {
- /* el comes before q[-1], move q[-1] up one */
- q[0] = q[-1];
- --q;
- } while (q > start && el.insn < q[-1].insn);
- *q = el;
- }
- }
+ sort(start, finish - start, sizeof(struct exception_table_entry),
+ cmp_ex, 0);
}
#endif

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2005-03-22 14:10    [from the cache]
©2003-2011 Jasper Spaans