Hi, does anyone know why CONFIG_CC_OPTIMIZE_FOR_SIZE is enabled in fedora kernel? I thought that option was useful for embedded systems only. Thanks
On Thu, Sep 03, 2009 at 01:01:55PM -0300, Arnaldo Carvalho de Melo wrote:
Em Thu, Sep 03, 2009 at 11:48:42AM -0400, Aristeu Rozanski escreveu:
Hi, does anyone know why CONFIG_CC_OPTIMIZE_FOR_SIZE is enabled in fedora kernel? I thought that option was useful for embedded systems only.
IIRC because it makes the kernel faster :-)
The reduced icache pressure makes it a win. As a bonus some non-performance-sensitive code (like the acpi interpretor) gets a _lot_ smaller on-disk.
Dave
kernel@lists.fedoraproject.org