aboutsummaryrefslogtreecommitdiff
path: root/arch/mn10300/boot/compressed/misc.c
diff options
context:
space:
mode:
authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2008-07-25 01:45:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:28 -0700
commit2d6ffcca623a9a16df6cdfbe8250b7a5904a5f5e (patch)
tree70d30cb6516608e9a8a1dce60c59f3a5ff21b305 /arch/mn10300/boot/compressed/misc.c
parentba92a43dbaee339cf5915ef766d3d3ffbaaf103c (diff)
downloadvexpress-lsk-2d6ffcca623a9a16df6cdfbe8250b7a5904a5f5e.tar.gz
inflate: refactor inflate malloc code
Inflate requires some dynamic memory allocation very early in the boot process and this is provided with a set of four functions: malloc/free/gzip_mark/gzip_release. The old inflate code used a mark/release strategy rather than implement free. This new version instead keeps a count on the number of outstanding allocations and when it hits zero, it resets the malloc arena. This allows removing all the mark and release implementations and unifying all the malloc/free implementations. The architecture-dependent code must define two addresses: - free_mem_ptr, the address of the beginning of the area in which allocations should be made - free_mem_end_ptr, the address of the end of the area in which allocations should be made. If set to 0, then no check is made on the number of allocations, it just grows as much as needed The architecture-dependent code can also provide an arch_decomp_wdog() function call. This function will be called several times during the decompression process, and allow to notify the watchdog that the system is still running. If an architecture provides such a call, then it must define ARCH_HAS_DECOMP_WDOG so that the generic inflate code calls arch_decomp_wdog(). Work initially done by Matt Mackall, updated to a recent version of the kernel and improved by me. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Mikael Starvik <mikael.starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Howells <dhowells@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <andi@firstfloor.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mn10300/boot/compressed/misc.c')
-rw-r--r--arch/mn10300/boot/compressed/misc.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/mn10300/boot/compressed/misc.c b/arch/mn10300/boot/compressed/misc.c
index ded207efc97..f673383518e 100644
--- a/arch/mn10300/boot/compressed/misc.c
+++ b/arch/mn10300/boot/compressed/misc.c
@@ -153,26 +153,9 @@ static uch *output_data;
static unsigned long output_ptr;
-static void *malloc(int size);
-
-static inline void free(void *where)
-{ /* Don't care */
-}
-
static unsigned long free_mem_ptr = (unsigned long) &end;
static unsigned long free_mem_end_ptr = (unsigned long) &end + 0x90000;
-static inline void gzip_mark(void **ptr)
-{
- kputs(".");
- *ptr = (void *) free_mem_ptr;
-}
-
-static inline void gzip_release(void **ptr)
-{
- free_mem_ptr = (unsigned long) *ptr;
-}
-
#define INPLACE_MOVE_ROUTINE 0x1000
#define LOW_BUFFER_START 0x2000
#define LOW_BUFFER_END 0x90000
@@ -186,26 +169,6 @@ static int lines, cols;
#include "../../../../lib/inflate.c"
-static void *malloc(int size)
-{
- void *p;
-
- if (size < 0)
- error("Malloc error\n");
- if (!free_mem_ptr)
- error("Memory error\n");
-
- free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
-
- p = (void *) free_mem_ptr;
- free_mem_ptr += size;
-
- if (free_mem_ptr >= free_mem_end_ptr)
- error("\nOut of memory\n");
-
- return p;
-}
-
static inline void scroll(void)
{
int i;