On Thu, 31 Jan 2008 19:34:25 +0100 Sam Ravnborg <[EMAIL PROTECTED]> wrote:
> On Thu, Jan 31, 2008 at 09:48:01AM -0800, Arjan van de Ven wrote: > > On Thu, 31 Jan 2008 19:14:36 +0200 > > Adrian Bunk <[EMAIL PROTECTED]> wrote: > > > > cpuhotplug is required for suspend/resume. > > > > > > Not on UP computers. > > > > > > > great! someone who still has one of those and uses a kernel without > > it. Can you look at your system.map and see how many kilobytes > > you've gained? Eg how many kilobytes are in these sections exactly? > I have one. A Atmel AT91 board equipped with an 9263. > So lets take a look at the defconfig build for the evaluation board. > > > o-arm/vmlinux.o: file format elf32-littlearm > > 0 .text 001cdefc 00000000 00000000 00000400 2**10 > 2 .init.text 000165e8 00000000 00000000 001ce6c0 2**5 > 26 .init.data 000032ec 00000000 00000000 002578cc 2**2 > > --- > > 4 .devinit.text 00001558 00000000 00000000 001e5270 2**2 > 9 .exit.text 00000bc8 00000000 00000000 001e8d2c 2**2 > 10 .cpuinit.text 00000924 00000000 00000000 001e98f4 2**2 > 11 .meminit.text 000004cc 00000000 00000000 001ea218 2**2 > 12 .devexit.text 00000160 00000000 00000000 001ea6e4 2**2 > 38 .cpuinit.data 00000040 00000000 00000000 0025afc0 2**2 > 39 .meminit.data 0000000c 00000000 00000000 0025b000 2**2 > > > __devinit alone gives a net win of 5464 bytes. > That is only ~3% of total .text size but this is non-swapable > memory where everything is worth it. now how much of this is lost again because you have to round the stuff to pagesize? -- 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/
