Messages in this thread | | | Date | Thu, 28 Apr 2016 17:07:54 -0400 | From | Waiman Long <> | Subject | Re: [PATCH resend] powerpc: enable qspinlock and its virtualization support |
| |
On 04/28/2016 06:55 AM, Pan Xinhui wrote: > From: Pan Xinhui<xinhui.pan@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.pan@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
| |