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-rw-r--r--meta/packages/mtd/mtd-utils/favour_lzo.patch140
1 files changed, 0 insertions, 140 deletions
diff --git a/meta/packages/mtd/mtd-utils/favour_lzo.patch b/meta/packages/mtd/mtd-utils/favour_lzo.patch
deleted file mode 100644
index 8b1581c467..0000000000
--- a/meta/packages/mtd/mtd-utils/favour_lzo.patch
+++ /dev/null
@@ -1,140 +0,0 @@
-Subject: [mtd-utils patch 2/2] Add favourlzo compression mode
-
-Add a favourlzo compression mode to mtd-utils
-
-This allows lzo compression to be used in the cases where the
-compression ratio isn't quite as good zlib. This can make sense in
-certain use cases because LZO decompression is much faster than zlib.
-
-Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
-
----
- compr.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++---
- compr.h | 1 +
- 2 files changed, 50 insertions(+), 3 deletions(-)
-
-Index: git/compr.c
-===================================================================
---- git.orig/compr.c 2007-03-01 11:58:01.000000000 +0000
-+++ git/compr.c 2007-03-01 11:58:09.000000000 +0000
-@@ -16,6 +16,8 @@
- #include <stdlib.h>
- #include <linux/jffs2.h>
-
-+#define FAVOUR_LZO_PERCENT 80
-+
- extern int page_size;
-
- /* LIST IMPLEMENTATION (from linux/list.h) */
-@@ -166,6 +168,33 @@ static void jffs2_decompression_test(str
- }
- }
-
-+/*
-+ * Return 1 to use this compression
-+ */
-+static int jffs2_is_best_compression(struct jffs2_compressor *this,
-+ struct jffs2_compressor *best, uint32_t size, uint32_t bestsize)
-+{
-+ switch (jffs2_compression_mode) {
-+ case JFFS2_COMPR_MODE_SIZE:
-+ if (bestsize > size)
-+ return 1;
-+ return 0;
-+ case JFFS2_COMPR_MODE_FAVOURLZO:
-+ if ((this->compr == JFFS2_COMPR_LZO) && (bestsize > size))
-+ return 1;
-+ if ((best->compr != JFFS2_COMPR_LZO) && (bestsize > size))
-+ return 1;
-+ if ((this->compr == JFFS2_COMPR_LZO) && (bestsize > (size * FAVOUR_LZO_PERCENT / 100)))
-+ return 1;
-+ if ((bestsize * FAVOUR_LZO_PERCENT / 100) > size)
-+ return 1;
-+
-+ return 0;
-+ }
-+ /* Shouldn't happen */
-+ return 0;
-+}
-+
- /* jffs2_compress:
- * @data: Pointer to uncompressed data
- * @cdata: Pointer to returned pointer to buffer for compressed data
-@@ -231,21 +260,29 @@ uint16_t jffs2_compress( unsigned char *
- }
- if (ret == JFFS2_COMPR_NONE) free(output_buf);
- break;
-+ case JFFS2_COMPR_MODE_FAVOURLZO:
- case JFFS2_COMPR_MODE_SIZE:
- orig_slen = *datalen;
- orig_dlen = *cdatalen;
- list_for_each_entry(this, &jffs2_compressor_list, list) {
-+ uint32_t needed_buf_size;
-+
-+ if (jffs2_compression_mode == JFFS2_COMPR_MODE_FAVOURLZO)
-+ needed_buf_size = orig_slen + jffs2_compression_check;
-+ else
-+ needed_buf_size = orig_dlen + jffs2_compression_check;
-+
- /* Skip decompress-only backwards-compatibility and disabled modules */
- if ((!this->compress)||(this->disabled))
- continue;
- /* Allocating memory for output buffer if necessary */
-- if ((this->compr_buf_size<orig_dlen+jffs2_compression_check)&&(this->compr_buf)) {
-+ if ((this->compr_buf_size < needed_buf_size) && (this->compr_buf)) {
- free(this->compr_buf);
- this->compr_buf_size=0;
- this->compr_buf=NULL;
- }
- if (!this->compr_buf) {
-- tmp_buf = malloc(orig_dlen+jffs2_compression_check);
-+ tmp_buf = malloc(needed_buf_size);
- if (!tmp_buf) {
- fprintf(stderr,"mkfs.jffs2: No memory for compressor allocation. (%d bytes)\n",orig_dlen);
- continue;
-@@ -265,7 +302,8 @@ uint16_t jffs2_compress( unsigned char *
- if (!compr_ret) {
- if (jffs2_compression_check)
- jffs2_decompression_test(this, data_in, this->compr_buf, *cdatalen, *datalen, this->compr_buf_size);
-- if ((!best_dlen)||(best_dlen>*cdatalen)) {
-+ if (((!best_dlen) || jffs2_is_best_compression(this, best, *cdatalen, best_dlen))
-+ && (*cdatalen < *datalen)) {
- best_dlen = *cdatalen;
- best_slen = *datalen;
- best = this;
-@@ -377,6 +415,9 @@ char *jffs2_stats(void)
- case JFFS2_COMPR_MODE_SIZE:
- act_buf += sprintf(act_buf,"size");
- break;
-+ case JFFS2_COMPR_MODE_FAVOURLZO:
-+ act_buf += sprintf(act_buf, "favourlzo");
-+ break;
- default:
- act_buf += sprintf(act_buf,"unkown");
- break;
-@@ -413,6 +454,11 @@ int jffs2_set_compression_mode_name(cons
- jffs2_compression_mode = JFFS2_COMPR_MODE_SIZE;
- return 0;
- }
-+ if (!strcmp("favourlzo", name)) {
-+ jffs2_compression_mode = JFFS2_COMPR_MODE_FAVOURLZO;
-+ return 0;
-+ }
-+
- return 1;
- }
-
-Index: git/compr.h
-===================================================================
---- git.orig/compr.h 2007-03-01 11:58:01.000000000 +0000
-+++ git/compr.h 2007-03-01 11:58:09.000000000 +0000
-@@ -32,6 +32,7 @@
- #define JFFS2_COMPR_MODE_NONE 0
- #define JFFS2_COMPR_MODE_PRIORITY 1
- #define JFFS2_COMPR_MODE_SIZE 2
-+#define JFFS2_COMPR_MODE_FAVOURLZO 3
-
- #define kmalloc(a,b) malloc(a)
- #define kfree(a) free(a)
-
-