On 3/29/07, Wu, Bryan <[EMAIL PROTECTED]> wrote:
On architectures with MMU, malloc takes about the same speed, indepentant of malloc size, while on the Blackfin (NOMMU), as the malloc size increases, the time that malloc consumes grows....
err, this is not the direction we wanted to go ... this requires changes to the user<->kernel boundary which certainly will be rejected by the glibc maintainers since it implies breakage in POSIX behavior and is specific to no-mmu only ... the plan is to hold onto this cruft in Blackfin until we get this bug sorted out: http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3027 as the thing we'll send to mainline will be sane (a no-mmu specific kconfig option to control the memset in the kernel malloc) the memset in the kernel right now for no-mmu is by design, not defect ... we can chat about this more via Blackfin channels if you like, or just wait till we meet up in Shanghai -mike - 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/
