== Issue ==
* None.
== Progress ==
* multilib can not work with multiarch anymore, so change Linaro
crosstool-ng to make 2014.04 release (2/10).
- For 4.8 release, we will revert the change and keep it align with
previous releases.
* Linaro 4.9 toolchain binaries pre-releases (Cross & native) for
aarch64 (2/10):
http://cbuild.validation.linaro.org/binaries/4.9-prerelease-2014.04.
* Try to set up native spec2006 tests on Chromebook. But got "out of
memory" when building the tools (1/10).
* Clean up and test for shrink-wrap enhancement (TCWG-133: 2/10)
* Rebase the aarch64 fcsel patch and testing. (1/10)
* ARM internal work (2/10)
== Plans ==
* Send the shrink-wrap related patches for review.
* PING the pending patches.
== Planed leaves ==
* April 21: Team event.
* May 1-3: Labour day holiday.
== This week ==
- Resolved Launchpad bug 1305042 as user error and provided proper asm
coding [TCWG-290] [2/10]
- Investigated infinite loop bug [TCWG-290][6/10]
- Determined the infinite loop is occurring in function
vt_find_locations in the variable tracking pass
- Still debugging to determine cause of infinite loop
- Absent due to illness on April 14th
== Next week ==
Vacation
== Future ==
Getting the following cross compiling for RPi on Debian Wheezy x64 using
the gcc-linaro-arm-linux-gnueabihf-raspbian toolchain within Eclipse
Kepler. Compilation works fine using native Debian x64 GCC and native
GCC compiler on the RPi.
out of dynamic memory in yy_create_buffer()
collect2: error: ld returned 2 exit status
make: * [cwebsocket] Error 1
I'm stumped. Can't find much info on the issue. Any ideas?
== Progress ==
* One bank holiday, half day childcare (3/10)
* Submit two iterations of malloc microbenchmark for glibc (4/10, TCWG-160)
* Submitted a patch for aarch64 ld bug with SystemTap notes (1/10)
* Investigated strcmp implementations for ARM (1/10, TCWG-153)
* Patch review, bugs, support, etc. (1/10)
== Issues ==
* None
== Plan ==
* malloc benchmarking/implementation work
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
TCWG-156 cortex-strings memset (3/10)
* Got a full set of benchmarks (for my 2 targets)
* Cleaned up code
* Sped up small memsets (for A9, A15 results pending)
glibc performance bug in lowlevellock.c (1/10 - I'll make a card next week)
* Learned to build and test glibc
* Understood the bug and worked out how to fix
Misc
* Meetings/mail (1/10)
* Infrastructure/workflow fiddling (1/10)
* 2 days holiday
== Plan ==
More TCWG-156
Finish off glibc performance bug
Public holidays Friday & Monday
== Week of April 7th ==
- Made a how-to wiki page/script on how to use QEMU and schroot for system emulation (TCWG-179, 2/10).
-- This allows you to get armhf or armel or aarch64 Ubuntu or Debian system within minutes, e.g., for PGO or LTO bootstraps of GCC.
-- https://collaborate.linaro.org/display/TCWG/ARM+ubuntu+chroot+with+QEMU+use…
-- I can move this page into public wiki if get enough interest from non-Linaro people.
- Fixed various bugs in instruction scheduling patch set (TCWG-388, 5/10).
- Scripted running SPEC2000 for reproducible benchmarking (TCWG-238, 3/10).
-- The scripts are now at http://git.linaro.org/toolchain/spec2xxx-utils.git
-- Scripts support both local (native) and remote (cross) benchmarking.
== Week of April 14th ==
- Document spec2xxx-utils scripts and see how they fare in LAVA environment. Add support for SPEC2006. (TCWG-238)
- Post autoprefetcher patch set upstream (TCWG-388)
--
Maxim Kuvyrkov
www.linaro.org
== Week of March 31st ==
- Investigated and scripted how to reproducibly run benchmarks (TCWG-238, 7/10)
-- Stop all services on target board
-- Use local disk
-- Stop networking
-- Bind benchmark to a specific CPU. Bind all other processes to a different CPU.
-- Disable frequency scaling.
- Various discussions (3/10)
--
Maxim Kuvyrkov
www.linaro.org
PGO - AArch64 (TCWG-179) (4/10)
* Installed QEMU user static for aarch64 and use them from
chroot environment in ubuntiu 13.10
* Tried installing chroot + qemu arm64-saucy in another ubuntu 12.04
machine. Issue with binfmts. looks to be corrupted.
* Bootstrap GCC with PGO with --enable-languages=c,c++,fortran
completed under arm64-chroot.
* Built GCC and binutils in native mode under chroot + qemu arm64-saucy .
* SPEC runs -O3 -mcpu=cortex-a57 in chroot + qemu arm64-saucy with
linaro release source (4.8).
Calculix did not finish under chroot + qemu arm64-saucy
GLIBC Systemtap (4/10)
* Built systemtap under chroot + qemu arm64-saucy. Built glibc with
the patch and used --enable-systemtap.
* Able to see setjmp probe in gdb, but longjmp probes not loading.
Tried debugging in gdb. gdb debugging support not available yet under
qemu.
* Discussed with Will newton on my observation.
Bug fix (1/10)
* Not much progress continued looking at reload dumps.
Misc (1/10)
* Tested cbuildv2 to build gcc natively under qemu-arm64-chroot-ubuntu-saucy.
cbuildv2 reports configure error for gcc and g++multilibs. But they
are not needed for native builds. Sent note to Rob for fixing it.
* Attend 1-1 with Ryan
* Attend 1-1 with Maxim discuss PGO work.
== Plan ==
PGO runs for SPEC2006 on chroot + qemu arm64-saucy
Upstream /testing for systemtap probes in glibc
Reload bug fix.
Leave: 17-Apr local state election.
== Progress ==
* GDB reverse debugging on aarch64 [6/10] [TCWG-398]
-- Setup development tree and debug environment.
-- Verified generic reverse debugging implementation aarch64.
-- Implemented main function stubs to catch instruction for decoding
and recording.
* Work on gdb testing utility [TCWG-96] [1/10]
-- Some tweaks to scripts and wiki updates.
* Experimented gdb testing/debugging with Aarch64 QEMU + Chroot [3/10]
== Plan ==
* GDB reverse debugging on aarch64 [TCWG-398]
-- Implement main instruction decoding handler and write function
stubs for different types of instructions.
-- Dig deeper into aarch32 for handling it through armv7
implementation if possible.
== Progress ==
TCWG-156 cortex-strings memset (5/10)
* Fixed a couple of bugs in the no-VFP case
* Ran benchmarks, discarded broken benchmarks, ran more benchmarks
* Explored benchmarking scripts
* Took a hard look at the memset tests
* Experimented with ARM-internal cortex-strings benchmark (not useful right now)
Misc
* Meetings (1/10)
* Kicked an A15 target until it worked (1/10)
* 1/2 day holiday
== Plan ==
More TCWG-156
Maxim's glibc starter issue
Holiday Tuesday
Public Holidays Friday & next Monday
