Re: [PATCH RFC 2/2] powerpc/mm: Enable page parallel initialisation

2016-03-03 Thread Mel Gorman 
On Thu, Mar 03, 2016 at 03:01:41PM +0800, Li Zhang wrote:
> From: Li Zhang 
> 
> Parallel initialisation has been enabled for X86,
> boot time is improved greatly.
> On Power8, for small memory, it is improved greatly.
> Here is the result from my test on Power8 platform:
> 
> For 4GB memory: 57% is improved
> For 50GB memory: 22% is improve
> 
> Signed-off-by: Li Zhang 

Acked-by: Mel Gorman 

-- 
Mel Gorman
SUSE Labs

Re: [PATCH RFC 2/2] powerpc/mm: Enable page parallel initialisation

2016-03-03 Thread Mel Gorman 
On Thu, Mar 03, 2016 at 03:01:41PM +0800, Li Zhang wrote:
> From: Li Zhang 
> 
> Parallel initialisation has been enabled for X86,
> boot time is improved greatly.
> On Power8, for small memory, it is improved greatly.
> Here is the result from my test on Power8 platform:
> 
> For 4GB memory: 57% is improved
> For 50GB memory: 22% is improve
> 
> Signed-off-by: Li Zhang 

Acked-by: Mel Gorman 

-- 
Mel Gorman
SUSE Labs

[PATCH RFC 2/2] powerpc/mm: Enable page parallel initialisation

2016-03-02 Thread Li Zhang 
From: Li Zhang 

Parallel initialisation has been enabled for X86,
boot time is improved greatly.
On Power8, for small memory, it is improved greatly.
Here is the result from my test on Power8 platform:

For 4GB memory: 57% is improved
For 50GB memory: 22% is improve

Signed-off-by: Li Zhang 
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e4824fd..83073c2 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -158,6 +158,7 @@ config PPC
select ARCH_HAS_DEVMEM_IS_ALLOWED
select HAVE_ARCH_SECCOMP_FILTER
select ARCH_HAS_UBSAN_SANITIZE_ALL
+   select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
 
 config GENERIC_CSUM
def_bool CPU_LITTLE_ENDIAN
-- 
2.1.0

[PATCH RFC 2/2] powerpc/mm: Enable page parallel initialisation

2016-03-02 Thread Li Zhang 
From: Li Zhang 

Parallel initialisation has been enabled for X86,
boot time is improved greatly.
On Power8, for small memory, it is improved greatly.
Here is the result from my test on Power8 platform:

For 4GB memory: 57% is improved
For 50GB memory: 22% is improve

Signed-off-by: Li Zhang 
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e4824fd..83073c2 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -158,6 +158,7 @@ config PPC
select ARCH_HAS_DEVMEM_IS_ALLOWED
select HAVE_ARCH_SECCOMP_FILTER
select ARCH_HAS_UBSAN_SANITIZE_ALL
+   select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
 
 config GENERIC_CSUM
def_bool CPU_LITTLE_ENDIAN
-- 
2.1.0