| Message ID | 20180105014837.23600-1-dann.frazier@canonical.com |
|---|---|
| Headers | show |
| Series | Switch arm64 over to qrwlock | expand |
On Thu, Jan 04, 2018 at 06:48:32PM -0700, dann frazier wrote: > BugLink: http://bugs.launchpad.net/bugs/1732238 > > These patches comprise all clean cherry picks that landed in the 4.15 > merge window. Verified on a ThunderX2-based Sabre board, and regression > tested on a 128-cpu x86 system using stress-ng and locktorture. (The other > Ubuntu architectures don't use qrwlocks). Clean cherry picks. It's a little frightening to be making significant changes to locking code in an SRU, but this is limited to arm64 and appears to have been well tested there. Acked-by: Seth Forshee <seth.forshee@canonical.com> Applied to bionic/master-next, thanks!
Clean cherry-picks with scope restricted to arm64.
Acked-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
All clean cherry-picks from upstream. Acked-by: Paolo Pisati <paolo.pisati@canonical.com> On Fri, Jan 5, 2018 at 2:48 AM, dann frazier <dann.frazier@canonical.com> wrote: > BugLink: http://bugs.launchpad.net/bugs/1732238 > > These patches comprise all clean cherry picks that landed in the 4.15 > merge window. Verified on a ThunderX2-based Sabre board, and regression > tested on a 128-cpu x86 system using stress-ng and locktorture. (The other > Ubuntu architectures don't use qrwlocks). > > Will Deacon (5): > locking/qrwlock: Use 'struct qrwlock' instead of 'struct __qrwlock' > locking/atomic: Add atomic_cond_read_acquire() > locking/qrwlock: Use atomic_cond_read_acquire() when spinning in > qrwlock > locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks > locking/qrwlock: Prevent slowpath writers getting held up by fastpath > > arch/arm64/Kconfig | 17 ++++ > arch/arm64/include/asm/Kbuild | 1 + > arch/arm64/include/asm/spinlock.h | 164 +------------------------------- > arch/arm64/include/asm/spinlock_types.h | 6 +- > include/asm-generic/atomic-long.h | 3 + > include/asm-generic/qrwlock.h | 37 ++----- > include/asm-generic/qrwlock_types.h | 15 ++- > include/linux/atomic.h | 4 + > kernel/locking/qrwlock.c | 86 +++-------------- > 9 files changed, 61 insertions(+), 272 deletions(-) > > -- > 2.15.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team
Applied to Artful On 2018-01-04 18:48:32 , dann frazier wrote: > BugLink: http://bugs.launchpad.net/bugs/1732238 > > These patches comprise all clean cherry picks that landed in the 4.15 > merge window. Verified on a ThunderX2-based Sabre board, and regression > tested on a 128-cpu x86 system using stress-ng and locktorture. (The other > Ubuntu architectures don't use qrwlocks). > > Will Deacon (5): > locking/qrwlock: Use 'struct qrwlock' instead of 'struct __qrwlock' > locking/atomic: Add atomic_cond_read_acquire() > locking/qrwlock: Use atomic_cond_read_acquire() when spinning in > qrwlock > locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks > locking/qrwlock: Prevent slowpath writers getting held up by fastpath > > arch/arm64/Kconfig | 17 ++++ > arch/arm64/include/asm/Kbuild | 1 + > arch/arm64/include/asm/spinlock.h | 164 +------------------------------- > arch/arm64/include/asm/spinlock_types.h | 6 +- > include/asm-generic/atomic-long.h | 3 + > include/asm-generic/qrwlock.h | 37 ++----- > include/asm-generic/qrwlock_types.h | 15 ++- > include/linux/atomic.h | 4 + > kernel/locking/qrwlock.c | 86 +++-------------- > 9 files changed, 61 insertions(+), 272 deletions(-) > > -- > 2.15.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team
BugLink: http://bugs.launchpad.net/bugs/1732238 These patches comprise all clean cherry picks that landed in the 4.15 merge window. Verified on a ThunderX2-based Sabre board, and regression tested on a 128-cpu x86 system using stress-ng and locktorture. (The other Ubuntu architectures don't use qrwlocks). Will Deacon (5): locking/qrwlock: Use 'struct qrwlock' instead of 'struct __qrwlock' locking/atomic: Add atomic_cond_read_acquire() locking/qrwlock: Use atomic_cond_read_acquire() when spinning in qrwlock locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks locking/qrwlock: Prevent slowpath writers getting held up by fastpath arch/arm64/Kconfig | 17 ++++ arch/arm64/include/asm/Kbuild | 1 + arch/arm64/include/asm/spinlock.h | 164 +------------------------------- arch/arm64/include/asm/spinlock_types.h | 6 +- include/asm-generic/atomic-long.h | 3 + include/asm-generic/qrwlock.h | 37 ++----- include/asm-generic/qrwlock_types.h | 15 ++- include/linux/atomic.h | 4 + kernel/locking/qrwlock.c | 86 +++-------------- 9 files changed, 61 insertions(+), 272 deletions(-)