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-rw-r--r--init/Kconfig18
-rw-r--r--init/initramfs.c10
-rw-r--r--init/main.c9
3 files changed, 22 insertions, 15 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 9fd23bcc170..1510e17a290 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -115,10 +115,13 @@ config HAVE_KERNEL_BZIP2
config HAVE_KERNEL_LZMA
bool
+config HAVE_KERNEL_LZO
+ bool
+
choice
prompt "Kernel compression mode"
default KERNEL_GZIP
- depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA
+ depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_LZO
help
The linux kernel is a kind of self-extracting executable.
Several compression algorithms are available, which differ
@@ -141,9 +144,8 @@ config KERNEL_GZIP
bool "Gzip"
depends on HAVE_KERNEL_GZIP
help
- The old and tried gzip compression. Its compression ratio is
- the poorest among the 3 choices; however its speed (both
- compression and decompression) is the fastest.
+ The old and tried gzip compression. It provides a good balance
+ between compression ratio and decompression speed.
config KERNEL_BZIP2
bool "Bzip2"
@@ -164,6 +166,14 @@ config KERNEL_LZMA
two. Compression is slowest. The kernel size is about 33%
smaller with LZMA in comparison to gzip.
+config KERNEL_LZO
+ bool "LZO"
+ depends on HAVE_KERNEL_LZO
+ help
+ Its compression ratio is the poorest among the 4. The kernel
+ size is about about 10% bigger than gzip; however its speed
+ (both compression and decompression) is the fastest.
+
endchoice
config SWAP
diff --git a/init/initramfs.c b/init/initramfs.c
index 4c00edc5968..b37d34beb90 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -413,7 +413,7 @@ static unsigned my_inptr; /* index of next byte to be processed in inbuf */
static char * __init unpack_to_rootfs(char *buf, unsigned len)
{
- int written;
+ int written, res;
decompress_fn decompress;
const char *compress_name;
static __initdata char msg_buf[64];
@@ -445,10 +445,12 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len)
}
this_header = 0;
decompress = decompress_method(buf, len, &compress_name);
- if (decompress)
- decompress(buf, len, NULL, flush_buffer, NULL,
+ if (decompress) {
+ res = decompress(buf, len, NULL, flush_buffer, NULL,
&my_inptr, error);
- else if (compress_name) {
+ if (res)
+ error("decompressor failed");
+ } else if (compress_name) {
if (!message) {
snprintf(msg_buf, sizeof msg_buf,
"compression method %s not configured",
diff --git a/init/main.c b/init/main.c
index c3db4a98b36..4cb47a159f0 100644
--- a/init/main.c
+++ b/init/main.c
@@ -369,12 +369,6 @@ static void __init smp_init(void)
{
unsigned int cpu;
- /*
- * Set up the current CPU as possible to migrate to.
- * The other ones will be done by cpu_up/cpu_down()
- */
- set_cpu_active(smp_processor_id(), true);
-
/* FIXME: This should be done in userspace --RR */
for_each_present_cpu(cpu) {
if (num_online_cpus() >= setup_max_cpus)
@@ -486,6 +480,7 @@ static void __init boot_cpu_init(void)
int cpu = smp_processor_id();
/* Mark the boot cpu "present", "online" etc for SMP and UP case */
set_cpu_online(cpu, true);
+ set_cpu_active(cpu, true);
set_cpu_present(cpu, true);
set_cpu_possible(cpu, true);
}
@@ -662,9 +657,9 @@ asmlinkage void __init start_kernel(void)
proc_caches_init();
buffer_init();
key_init();
+ radix_tree_init();
security_init();
vfs_caches_init(totalram_pages);
- radix_tree_init();
signals_init();
/* rootfs populating might need page-writeback */
page_writeback_init();