106 lines
2.8 KiB
Diff
106 lines
2.8 KiB
Diff
From 92563d7a7a5175ef78c4a94ee269b1b455331b4c Mon Sep 17 00:00:00 2001
|
|
From: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
|
|
Date: Tue, 17 Sep 2013 15:29:33 +0900
|
|
Subject: [PATCH] [PATCH 1/2] cache: Allocate buffers at initialization to
|
|
detect malloc() failure.
|
|
|
|
malloc() is used in cache_alloc() but there's no check for it. If I
|
|
added check in cache_alloc() directly, cache_alloc() needs to return
|
|
one more error status and code gets somewhat complicated. Instead, I
|
|
move malloc() in initial() to detect allocation failure at
|
|
initialization. By this change, 8 buffers are allocated at the same
|
|
time, no longer incrementally. However, 8 buffers are almost always
|
|
used throughout execution. There's essential differnece from the
|
|
incremental one.
|
|
|
|
Signed-off-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
|
|
---
|
|
cache.c | 29 ++++++++++++++++++++++-------
|
|
cache.h | 1 +
|
|
makedumpfile.c | 3 +++
|
|
3 files changed, 26 insertions(+), 7 deletions(-)
|
|
|
|
diff --git a/makedumpfile-1.5.4/cache.c b/makedumpfile-1.5.4/cache.c
|
|
index 3bea089..dad8d80 100644
|
|
--- a/makedumpfile-1.5.4/cache.c
|
|
+++ b/makedumpfile-1.5.4/cache.c
|
|
@@ -18,6 +18,7 @@
|
|
|
|
#include "makedumpfile.h"
|
|
#include "cache.h"
|
|
+#include "print_info.h"
|
|
|
|
struct cache_entry {
|
|
unsigned long long paddr;
|
|
@@ -36,6 +37,25 @@ static int avail = CACHE_SIZE;
|
|
|
|
static struct cache used, pending;
|
|
|
|
+int
|
|
+cache_init(void)
|
|
+{
|
|
+ void *bufptr;
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < CACHE_SIZE; ++i) {
|
|
+ bufptr = malloc(info->page_size);
|
|
+ if (bufptr == NULL) {
|
|
+ ERRMSG("Can't allocate memory for cache. %s\n",
|
|
+ strerror(errno));
|
|
+ return FALSE;
|
|
+ }
|
|
+ pool[i].bufptr = bufptr;
|
|
+ }
|
|
+
|
|
+ return TRUE;
|
|
+}
|
|
+
|
|
static void
|
|
add_entry(struct cache *cache, struct cache_entry *entry)
|
|
{
|
|
@@ -83,13 +103,8 @@ cache_alloc(unsigned long long paddr)
|
|
{
|
|
struct cache_entry *entry = NULL;
|
|
|
|
- if (avail) {
|
|
- void *bufptr = malloc(info->page_size);
|
|
- if (bufptr) {
|
|
- entry = &pool[--avail];
|
|
- entry->bufptr = bufptr;
|
|
- }
|
|
- }
|
|
+ if (avail)
|
|
+ entry = &pool[--avail];
|
|
|
|
if (!entry) {
|
|
if (used.tail) {
|
|
diff --git a/makedumpfile-1.5.4/cache.h b/makedumpfile-1.5.4/cache.h
|
|
index f37d883..4730e12 100644
|
|
--- a/makedumpfile-1.5.4/cache.h
|
|
+++ b/makedumpfile-1.5.4/cache.h
|
|
@@ -19,6 +19,7 @@
|
|
#ifndef _CACHE_H
|
|
#define _CACHE_H
|
|
|
|
+int cache_init(void);
|
|
void *cache_search(unsigned long long paddr);
|
|
void *cache_alloc(unsigned long long paddr);
|
|
void cache_add(unsigned long long paddr);
|
|
diff --git a/makedumpfile-1.5.4/makedumpfile.c b/makedumpfile-1.5.4/makedumpfile.c
|
|
index 1718f88..e01ff50 100644
|
|
--- a/makedumpfile-1.5.4/makedumpfile.c
|
|
+++ b/makedumpfile-1.5.4/makedumpfile.c
|
|
@@ -3017,6 +3017,9 @@ out:
|
|
DEBUG_MSG("Buffer size for the cyclic mode: %ld\n", info->bufsize_cyclic);
|
|
}
|
|
|
|
+ if (!cache_init())
|
|
+ return FALSE;
|
|
+
|
|
if (debug_info) {
|
|
if (info->flag_sadump)
|
|
(void) sadump_virt_phys_base();
|
|
--
|
|
1.8.3.1
|
|
|