Hello Laura, On Thu, Jun 25, 2015 at 2:07 AM, Laura Abbott <labb...@redhat.com> wrote: > On 06/11/2015 06:07 AM, Mark Rutland wrote: >> >> On Thu, Jun 04, 2015 at 08:15:49PM +0100, Laura Abbott wrote: >>> >>> >>> The memblock limit is currently used in find_limits >>> to find the bounds for ZONE_NORMAL. The memblock >>> limit may need to be rounded down a PMD size to ensure >>> allocations are fully mapped though. This has the side >>> effect of reducing the amount of memory in ZONE_NORMAL. >>> Once all lowmem is mapped, it's safe to change the memblock >>> limit back to include the unaligned section. Adjust the >>> memblock limit after lowmem mapping is complete. >>> >>> Before: >>> # cat /proc/zoneinfo | grep managed >>> managed 62907 >>> managed 424 >>> >>> After: >>> # cat /proc/zoneinfo | grep managed >>> managed 63331 >>> >>> Signed-off-by: Laura Abbott <labb...@fedoraproject.org> >>> --- >>> This is a replacement for >>> 'arm: Don't use memblock limit for the lowmem bound' which >>> doesn't actually work on NOMMU systems. >> >> >> Works for me on TC2, atop v4.1-rc7. Before this patch, with a few byes >> carved out of the memory node I would see: >> >> Memory: 1030380K/1046528K available (4832K kernel code, 154K rwdata, 1376K >> rodata, 260K init, 147K bss, 16148K reserved, 0K cma-reserved) >> >> $ cat /proc/zoneinfo | grep managed >> managed 257660 >> >> With the patch I see: >> >> Memory: 1032424K/1048572K available (4832K kernel code, 154K rwdata, 1376K >> rodata, 260K init, 147K bss, 16148K reserved, 0K cma-reserved) >> >> $ cat /proc/zoneinfo | grep managed >> managed 258171 >> >> The patch itself looks good to me. >> >> Reviewed-by: Mark Rutland <mark.rutl...@arm.com> >> Tested-by: Mark Rutland <mark.rutl...@arm.com> >> >> Thanks, >> Mark. >> > > FYI, I put this in the patch tracker. I was on vacation when the > Reviewed-by/Tested-by > came in so I'm only getting to it now. >
Maybe is a little late but just for reference, this patch fixes a boot hang that was reported [0] for the Exynos Chromebooks that was in v4.1. So on an Exynos5420 Peach Pit Chromebook: Tested-by: Javier Martinez Canillas <jav...@dowhile0.org> The patch also looks good to me: Reviewed-by: Javier Martinez Canillas <jav...@dowhile0.org> > Thanks, > Laura > Best regards, Javier [0]: http://archive.arm.linux.org.uk/lurker/message/20150630.100102.22c9c1d9.en.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
