On Thu, 07 Dec 2006 11:18:43 +1100 Michael Neuling wrote: > Add free_initrd= option to control freeing of initrd memory after > extraction. By default, free memory as previously.
Please add doc. for this in Documentation/kernel-parameters.txt. > Signed-off-by: Michael Neuling <[EMAIL PROTECTED]> > --- > Useful for kexec when you want to reuse the same initrd. Testing on > POWERPC with CPIOs > > init/initramfs.c | 18 ++++++++++++++++-- > 1 file changed, 16 insertions(+), 2 deletions(-) > > Index: linux-2.6-ozlabs/init/initramfs.c > =================================================================== > --- linux-2.6-ozlabs.orig/init/initramfs.c > +++ linux-2.6-ozlabs/init/initramfs.c > @@ -487,6 +487,17 @@ static char * __init unpack_to_rootfs(ch > return message; > } > > +static int do_free_initrd = 1; > + > +int __init free_initrd_param(char *p) > +{ > + if (p && strncmp(p, "0", 1) == 0) > + do_free_initrd = 0; > + > + return 0; > +} > +early_param("free_initrd", free_initrd_param); > + > extern char __initramfs_start[], __initramfs_end[]; > #ifdef CONFIG_BLK_DEV_INITRD > #include <linux/initrd.h> > @@ -494,10 +505,13 @@ extern char __initramfs_start[], __initr > > static void __init free_initrd(void) > { > -#ifdef CONFIG_KEXEC > unsigned long crashk_start = (unsigned long)__va(crashk_res.start); > unsigned long crashk_end = (unsigned long)__va(crashk_res.end); > > + if (!do_free_initrd) > + goto skip; > + > +#ifdef CONFIG_KEXEC > /* > * If the initrd region is overlapped with crashkernel reserved region, > * free only memory that is not part of crashkernel region. > @@ -515,7 +529,7 @@ static void __init free_initrd(void) > } else > #endif > free_initrd_mem(initrd_start, initrd_end); > - > +skip: > initrd_start = 0; > initrd_end = 0; > } > - --- ~Randy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/