Rebuild the world.

Merged to master at b91cfeb70668..68fe81c41332 (from, to]

You can see the entire diff with 'git diff' or at
https://github.com/brho/akaros/compare/b91cfeb70668...68fe81c41332


On 2016-09-13 at 16:10 Barret Rhoden <b...@cs.berkeley.edu> wrote:
> Hi -
> 
> This patchset fixes some issues with our signal handlers and changes
> glibc to use PDR locks for its low-level locks, which was a potential
> source of deadlock in vcore context (e.g. some signal handlers).
> 
> Barret
> 
> 
> The following changes since commit
> 29d6d3978d877889692d68e5046106ffb206779f:
> 
>   Set a default sysname in #cons (2016-09-07 12:38:17 -0400)
> 
> are available in the git repository at:
> 
>   g...@github.com:brho/akaros.git sigs
> 
> for you to fetch changes up to
> 72711c07e336c244663f945930bb0e9e578c143c:
> 
>   Clean up x86_64 sysdeps (XCC) (2016-09-12 16:38:25 -0400)
> 
> ----------------------------------------------------------------
> View this online at:
> https://github.com/brho/akaros/compare/29d6d3978d87...72711c07e336
> 
> ----------------------------------------------------------------
> Barret Rhoden (14):
>       Use a helper for determining if a uth handles sigs
>       Make signal handler functions vcore-ctx-safe
>       Move the get_user_ctx_* helpers to ros/ (XCC)
>       Add a helper for finding current_uthread's context
>       Always provide a user context to signal handlers
>       Fix include paths in lock_test
>       Fix sbrk's lock initialization (XCC)
>       Allow uth_disable_notifs without current_uthread
>       Remove the NO_CAS version of spin_pdr locks
>       Fix spinlock_trylock's return value
>       Add spin_pdr_trylock
>       Use PDR locks for glibc's internal locks (XCC)
>       Set the glibc thread's pointer_guard (XCC)
>       Clean up x86_64 sysdeps (XCC)
> 
>  kern/arch/riscv/ros/trapframe.h                    | 64
> +++++++++++++++++ kern/arch/riscv/trap.h
> | 64 -----------------
> kern/arch/x86/ros/trapframe.h                      | 45 ++++++++++++
> kern/arch/x86/trap64.h                             | 45 ------------
> kern/include/ros/trapframe.h                       | 39 +++++++++++
> kern/src/trap.c                                    | 42 ------------
> tests/linux-lock-hacks.h                           | 19 ++---
> tests/lock_test.c                                  |  4
> +- .../glibc-2.19-akaros/sysdeps/akaros/Versions      |  3
> + .../sysdeps/akaros/lowlevellock.h                  | 17
> +++-- .../sysdeps/akaros/parlib-compat.c                 | 46
> ++++++++++++- .../glibc-2.19-akaros/sysdeps/akaros/sbrk.c        |  2
> +- .../glibc-2.19-akaros/sysdeps/akaros/tls.c         |  2
> + .../sysdeps/akaros/x86_64/sysdep.h                 | 49
> ++++++++++++- user/parlib/include/parlib/spinlock.h              | 31
> ++------- user/parlib/include/parlib/uthread.h               | 10 +++
> user/parlib/include/parlib/x86/atomic.h            |  1 -
> user/parlib/signal.c                               | 45 ++++++++++--
> user/parlib/spinlock.c                             | 80
> ++++++++--------------
> user/parlib/uthread.c                              | 22 +++---
> user/utest/atexit.c                                | 65
> ++++++++++++++++++ 21 files changed, 432 insertions(+), 263
> deletions(-) create mode 100644 user/utest/atexit.c

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