On 04/28/2016 06:55 AM, Pan Xinhui wrote:
From: Pan Xinhui<xinhui....@linux.vnet.ibm.com>
This patch aims to enable qspinlock on PPC. And on pseries platform, it also
support
paravirt qspinlock.
Signed-off-by: Pan Xinhui<xinhui....@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/qspinlock.h | 37 +++++++++++++++
arch/powerpc/include/asm/qspinlock_paravirt.h | 36 +++++++++++++++
.../powerpc/include/asm/qspinlock_paravirt_types.h | 13 ++++++
arch/powerpc/include/asm/spinlock.h | 31 ++++++++-----
arch/powerpc/include/asm/spinlock_types.h | 4 ++
arch/powerpc/kernel/paravirt.c | 52 ++++++++++++++++++++++
arch/powerpc/lib/locks.c | 32 +++++++++++++
arch/powerpc/platforms/pseries/setup.c | 5 +++
8 files changed, 198 insertions(+), 12 deletions(-)
create mode 100644 arch/powerpc/include/asm/qspinlock.h
create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h
create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt_types.h
create mode 100644 arch/powerpc/kernel/paravirt.c
This is just an enablement patch. You will also need a patch to activate
qspinlock for, at lease, some PPC configs. Right?
It has dependency on the pv_wait() patch that I sent out extend the
parameter list. Some performance data on how PPC system will perform
with and without qspinlock will also be helpful data points.
Cheers,
Longman
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