SliTaz Repositories

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/linux/stuff/linux-freeinitrd-2.6.30.6.u	Sun Jan 31 22:16:23 2010 +0100
     1.3 @@ -0,0 +1,143 @@
     1.4 +--- linux-2.6.30.4/arch/x86/mm/init.c
     1.5 ++++ linux-2.6.30.4/arch/x86/mm/init.c
     1.6 +@@ -381,7 +381,7 @@
     1.7 + 	 */
     1.8 + 	set_memory_rw(begin, (end - begin) >> PAGE_SHIFT);
     1.9 + 
    1.10 +-	printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
    1.11 ++	if (what) printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
    1.12 + 
    1.13 + 	for (; addr < end; addr += PAGE_SIZE) {
    1.14 + 		ClearPageReserved(virt_to_page(addr));
    1.15 +
    1.16 +--- linux-2.6.30.4/init/initramfs.c
    1.17 ++++ linux-2.6.30.4/init/initramfs.c
    1.18 +@@ -374,6 +374,47 @@
    1.19 + 	[Reset]		= do_reset,
    1.20 + };
    1.21 + 
    1.22 ++#include <linux/initrd.h>
    1.23 ++#define INITRD_PAGE ((PAGE_SIZE > 1024*1024) ? PAGE_SIZE : 1024*1024)
    1.24 ++
    1.25 ++static void free_rootfs_mem(unsigned long start, unsigned long end)
    1.26 ++{
    1.27 ++	free_init_pages(NULL, start, end);
    1.28 ++}
    1.29 ++
    1.30 ++static void _free_initrd(unsigned long initrd_start, unsigned long initrd_end, 
    1.31 ++			 void (*free_initrd_mem)(unsigned long, unsigned long));
    1.32 ++
    1.33 ++static struct {
    1.34 ++	int offset, last, inptr;
    1.35 ++	char *max;
    1.36 ++} fill;
    1.37 ++
    1.38 ++static void release_inbuf(void)
    1.39 ++{
    1.40 ++	if (fill.offset >= INITRD_PAGE) {
    1.41 ++		unsigned rem = fill.offset % INITRD_PAGE;
    1.42 ++		unsigned end = initrd_start + fill.offset - rem;
    1.43 ++		_free_initrd(initrd_start, end, free_rootfs_mem);
    1.44 ++		printk(".");
    1.45 ++		initrd_start = end;
    1.46 ++		fill.offset = rem;
    1.47 ++	}
    1.48 ++}
    1.49 ++
    1.50 ++static int fill_buffer(void *buffer, unsigned size)
    1.51 ++{
    1.52 ++	int max =  fill.max - (char *) initrd_start - fill.offset;
    1.53 ++	if (max > size) max = size;
    1.54 ++	if (max > INITRD_PAGE) max = INITRD_PAGE;
    1.55 ++	memcpy(buffer, (void *)(initrd_start + fill.offset), max);
    1.56 ++	fill.offset += max;
    1.57 ++	release_inbuf();
    1.58 ++	fill.inptr += fill.last;
    1.59 ++	fill.last = max;
    1.60 ++	return max;
    1.61 ++}
    1.62 ++
    1.63 + static int __init write_buffer(char *buf, unsigned len)
    1.64 + {
    1.65 + 	count = len;
    1.66 +@@ -417,6 +458,7 @@
    1.67 + 	decompress_fn decompress;
    1.68 + 	const char *compress_name;
    1.69 + 	static __initdata char msg_buf[64];
    1.70 ++	int early_free_initrd = (buf == (char *) initrd_start);
    1.71 + 
    1.72 + 	header_buf = kmalloc(110, GFP_KERNEL);
    1.73 + 	symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
    1.74 +@@ -430,8 +472,31 @@
    1.75 + 	message = NULL;
    1.76 + 	while (!message && len) {
    1.77 + 		loff_t saved_offset = this_header;
    1.78 ++		fill.offset = buf - (char *) initrd_start;
    1.79 ++		fill.max = buf + len;
    1.80 ++		fill.inptr = fill.last = 0;
    1.81 + 		if (*buf == '0' && !(this_header & 3)) {
    1.82 + 			state = Start;
    1.83 ++			if (early_free_initrd) {
    1.84 ++				while (len) {
    1.85 ++					unsigned n = len, tofree;
    1.86 ++					if (n > INITRD_PAGE)
    1.87 ++						n = INITRD_PAGE;
    1.88 ++					flush_buffer(buf, n);
    1.89 ++					buf += n;
    1.90 ++					len -= n;
    1.91 ++					n = buf - (char *) initrd_start;
    1.92 ++					tofree = n - (n % INITRD_PAGE);
    1.93 ++					if (!tofree)
    1.94 ++						continue;
    1.95 ++					_free_initrd(initrd_start,
    1.96 ++						     initrd_start + tofree,
    1.97 ++						     free_rootfs_mem);
    1.98 ++					initrd_start += tofree;
    1.99 ++					printk(".");
   1.100 ++				}
   1.101 ++				continue;
   1.102 ++			}
   1.103 + 			written = write_buffer(buf, len);
   1.104 + 			buf += written;
   1.105 + 			len -= written;
   1.106 +@@ -445,9 +510,15 @@
   1.107 + 		}
   1.108 + 		this_header = 0;
   1.109 + 		decompress = decompress_method(buf, len, &compress_name);
   1.110 +-		if (decompress)
   1.111 +-			decompress(buf, len, NULL, flush_buffer, NULL,
   1.112 ++		if (decompress) {
   1.113 ++			if (early_free_initrd) {
   1.114 ++				decompress(NULL, 0, fill_buffer, flush_buffer,
   1.115 ++					   NULL, &my_inptr, error);
   1.116 ++				my_inptr += fill.inptr;
   1.117 ++			}
   1.118 ++			else decompress(buf, len, NULL, flush_buffer, NULL,
   1.119 + 				   &my_inptr, error);
   1.120 ++		}
   1.121 + 		else if (compress_name) {
   1.122 + 			if (!message) {
   1.123 + 				snprintf(msg_buf, sizeof msg_buf,
   1.124 +@@ -484,7 +555,8 @@
   1.125 + #include <linux/initrd.h>
   1.126 + #include <linux/kexec.h>
   1.127 + 
   1.128 +-static void __init free_initrd(void)
   1.129 ++static void _free_initrd(unsigned long initrd_start, unsigned long initrd_end, 
   1.130 ++			 void (*free_initrd_mem)(unsigned long, unsigned long))
   1.131 + {
   1.132 + #ifdef CONFIG_KEXEC
   1.133 + 	unsigned long crashk_start = (unsigned long)__va(crashk_res.start);
   1.134 +@@ -512,6 +584,12 @@
   1.135 + #endif
   1.136 + 		free_initrd_mem(initrd_start, initrd_end);
   1.137 + skip:
   1.138 ++	;
   1.139 ++}
   1.140 ++
   1.141 ++static void __init free_initrd(void)
   1.142 ++{
   1.143 ++	_free_initrd(initrd_start, initrd_end, free_initrd_mem);
   1.144 + 	initrd_start = 0;
   1.145 + 	initrd_end = 0;
   1.146 + }