Hi Dave. Ok Can you tell me which thing runs faster ? 1)Copy *zImage(compressed kernel)* from flash to Ram, jump to start, Relocate compress kernel, uncompress it... 2)Copy* Image(uncompressed one) *from flash to RAM and run it right away...
My gut feeling says second one is better, thats what i m trying to prove here... :) Thanks Sandeep. On Wed, Jan 30, 2013 at 5:55 PM, Dave Hylands <[email protected]> wrote: > Hey sandeep, > > > > On Wed, Jan 30, 2013 at 5:30 PM, sandeep kumar <[email protected]> > wrote: > > > > Hi All > > On ARM, Just for learning i am working on booting with uncompressed > kernel. > > > > I am meddling with arch/arm/boot/compressed/head.S, and understand the > relocation/decompression stuff through putting some logs. > > > > I want to check how much time it takes for kernel to relocate itself and > how much time it takes to decompress etc., > > > > Is there any possibility of seeing the current time stamp here, like a > register which keeps on counting immediately after boot.. > > You're essentially running at the bootloader level here. You haven't > started the kernel so the only timers that you have are whatever your > bootloader has setup, or whatever you want to setup yourself (bare-metal > programming here). > > -- > Dave Hylands > Shuswap, BC, Canada > http://www.davehylands.com > -- With regards, Sandeep Kumar Anantapalli,
_______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
