Re: [PATCH] module: Use binary search in lookup_symbol()

From: Dirk Behme
Date: Wed May 04 2011 - 11:34:23 EST


On 03.05.2011 22:42, Alessio Igor Bogani wrote:
This work was supported by a hardware donation from the CE Linux Forum.

Signed-off-by: Alessio Igor Bogani<abogani@xxxxxxxxxx>
---
kernel/module.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 6a34337..a1f841e 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2055,10 +2055,8 @@ static const struct kernel_symbol *lookup_symbol(const char *name,
const struct kernel_symbol *stop)
{
const struct kernel_symbol *ks = start;
- for (; ks< stop; ks++)
- if (strcmp(ks->name, name) == 0)
- return ks;
- return NULL;
+ return bsearch(ks->name, start, stop - start,
+ sizeof(struct kernel_symbol), cmp_name);
}

static int is_exported(const char *name, unsigned long value,

How is this patch related to patch 4/4

http://marc.info/?l=linux-kernel&m=130296062420328&w=1

of the recently sent patch set? Is it a replacement? Or an add on to this (i.e. patch #5)?

Many thanks

Dirk
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