xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lib/extable.c: use bsearch() library function in search_extable()

Browse Source 
[thomas@m3y3r.de: v3: fix arch specific implementations]
  Link: http://lkml.kernel.org/r/1497890858.12931.7.camel@m3y3r.de
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Meyer
2017-07-10 15:51:58 -07:00
committed by Linus Torvalds
parent 12e8fd6fd3
commit a94c33dd1f
8 changed files with 63 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/sparc/mm/extable.c
View File

@@ -13,11 +13,11 @@ void sort_extable(struct exception_table_entry *start,
/* Caller knows they are in a range if ret->fixup == 0 */
const struct exception_table_entry *
search_extable(const struct exception_table_entry *start,
const struct exception_table_entry *last,
search_extable(const struct exception_table_entry *base,
const size_t num,
unsigned long value)
{
const struct exception_table_entry *walk;
int i;
/* Single insn entries are encoded as:
* word 1: insn address
@@ -37,30 +37,30 @@ search_extable(const struct exception_table_entry *start,
*/
/* 1. Try to find an exact match. */
for (walk = start; walk <= last; walk++) {
if (walk->fixup == 0) {
for (i = 0; i < num; i++) {
if (base[i].fixup == 0) {
/* A range entry, skip both parts. */
walk++;
i++;
continue;
}
/* A deleted entry; see trim_init_extable */
if (walk->fixup == -1)
if (base[i].fixup == -1)
continue;
if (walk->insn == value)
return walk;
if (base[i].insn == value)
return &base[i];
}
/* 2. Try to find a range match. */
for (walk = start; walk <= (last - 1); walk++) {
if (walk->fixup)
for (i = 0; i < (num - 1); i++) {
if (base[i].fixup)
continue;
if (walk[0].insn <= value && walk[1].insn > value)
return walk;
if (base[i].insn <= value && base[i + 1].insn > value)
return &base[i];
walk++;
i++;
}
return NULL;