-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/resctrl.h | 27
tools/testing/selftests/resctrl/resctrl_val.c | 192 ++
2 files changed, 219 insertions(+)
create mode 100644 tools/testing/selftests/resctrl
The resctrl selftests will be maintained by RDT maintainers.
Signed-off-by: Fenghua Yu
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 6ac000cc006d..07d597c68edc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12271,6 +12271,7 @@ S
From: Sai Praneeth Prakhya
The basic resctrl file system operations and data are added for future
usage by resctrl selftest tool.
Signed-off-by: Sai Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile | 10
Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/fill_buf.c | 178 +
1 file changed, 178 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/fill_buf.c
diff --git a/tools/testing/selftests
a ,
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 2 +-
tools/testing/selftests/resctrl/mba.c | 144
tools/testing/selftests/resctrl/resctrl.h | 3 +
tools/testing/selftests/resctrl/resctrl_tests.c | 10 ++
4 files ch
to pass the test.
Default benchmark is built-in fill_buf. But users can specify their
own benchmark by option "-ben".
We can add memory bandwidth monitoring for multiple processes in the
future.
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Sai Praneeth Prakhya ,
Signed-off-by:
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/resctrl_membw.c | 328
tools/testing/selftests/resctrl/resctrl_membw.h | 49
2 files changed, 377 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/resctrl_membw.c
create mode 100644 tools
Pathan (2):
selftests/resctrl: Add mbm test
selftests/resctrl: Add mba test
Fenghua Yu (1):
selftests/resctrl: Add the test in MAINTAINERS
Sai Praneeth Prakhya (4):
selftests/resctrl: Add basic resctrl file system operations and data
selftests/resctrl: Read memory bandwidth from perf IMC
> From: Moger, Babu [mailto:babu.mo...@amd.com]
> On 10/16/2018 11:56 AM, Fenghua Yu wrote:
> > With more and more resctrl features are being added by Intel, AMD and
> > ARM, a test tool is becoming more and more useful to validate that
> > both hardware and softw
On Mon, Oct 15, 2018 at 08:55:49PM +, Moger, Babu wrote:
> update_mba_bw : Feedback loop bandwidth update functionality is not
> needed for AMD.
Will you implement update_mba_bw() for AMD in future?
> list_for_each_entry(crgrp, head, mon.crdtgrp_list)
>
On Mon, Oct 15, 2018 at 08:55:54PM +, Moger, Babu wrote:
> From: Sherry Hurwitz
>
> The feature bit X86_FEATURE_MBA is detected via CPUID leaf 0x8008
> EBX Bit 06. This bit indicates the support of AMD's MBA feature.
>
> This feature is supported by both Intel and AMD. But they are
On Wed, Oct 17, 2018 at 11:04 AM Moger, Babu wrote:
>
> Hi Fenghua,
> My few comments.
>
> On 10/17/2018 09:40 AM, Moger, Babu wrote:
> > On 10/16/2018 03:32 PM, Fenghua Yu wrote:
> >>> From: Moger, Babu [mailto:babu.mo...@amd.com]
>
Features Programming Reference for more details on the CPUID
feature MOVDIR64B flag.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/cpufeatures.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h
b/arch/x86/include/asm/cpufeatures.h
index 90934ee7b79a
yet, this time these direct stores instructions patches are
sent out separately.
Fenghua Yu (2):
x86/cpufeatures: Enumerate MOVDIRI instruction
x86/cpufeatures: Enumerate MOVDIR64B instruction
arch/x86/include/asm/cpufeatures.h | 2 ++
1 file changed, 2 insertions(+)
--
2.5.0
MOVDIRI flag.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/cpufeatures.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h
b/arch/x86/include/asm/cpufeatures.h
index 89a048c2faec..90934ee7b79a 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86
and use pipe to communicate b/w processes
v2:
- Change code based on comments from Babu Moger
- Clean up other places.
Arshiya Hayatkhan Pathan (2):
selftests/resctrl: Add MBM test
selftests/resctrl: Add MBA test
Fenghua Yu (2):
selftests/resctrl: Add README for resctrl tests
selftests
Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/fill_buf.c | 175 +
1 file changed, 175 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/fill_buf.c
diff --git a/tools/testing/selftests
From: Sai Praneeth Prakhya
The basic resctrl file system operations and data are added for future
usage by resctrl selftest tool.
Signed-off-by: Sai Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 10
Signed-off-by: Sai Praneeth Prakhya ,
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 2 +-
tools/testing/selftests/resctrl/mba_test.c | 173
tools/testing/selftests/resctrl/resctrl.h | 2 +
tools/testing/selftests/resctrl/resct
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/membw.c | 431
1 file changed, 431 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/membw.c
diff --git a/tools/testing/selftests/resctrl/membw.c
b/tools/testing/selftests/resctrl
th Prakhya ,
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 8 +-
tools/testing/selftests/resctrl/mbm_test.c | 145
tools/testing/selftests/resctrl/membw.c | 2 +
tools/testing/selftests/resctrl/resctrl.h | 3 +
too
From: Sai Praneeth Prakhya
The callback starts a child process and puts the child pid in created
resctrl group with specified memory bandwidth in schemata. The child
starts running benchmark.
Signed-off-by: Sai Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
The resctrl selftest will be maintained by RDT maintainers.
Signed-off-by: Fenghua Yu
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 48a65c3a4189..ecd1369ef761 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12270,6 +12270,7 @@ S
resctrl tests will be implemented. README is added for the tool first.
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/README | 53 ++
1 file changed, 53 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/README
diff --git a/tools
> From: Moger, Babu
> > From: Fenghua Yu
> > From: Sai Praneeth Prakhya
> >
> > The basic resctrl file system operations and data are added for future
> > usage by resctrl selftest tool.
> >
> > + return 0;
> > +}
> > +
> >
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/membw.c | 403
1 file changed, 403 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/membw.c
diff --git a/tools/testing/selftests/resctrl/membw.c
b/tools/testing/selftests/resctrl
From: Sai Praneeth Prakhya
The basic resctrl file system operations and data are added for future
usage by resctrl selftest tool.
Signed-off-by: Sai Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 10
From: Sai Praneeth Prakhya
The callback starts a child process and puts the child pid in created
resctrl group with specified memory bandwidth in schemata. The child
starts running benchmark.
Signed-off-by: Sai Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
resctrl tests will be implemented. README is added for the tool first.
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/README | 53 ++
1 file changed, 53 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/README
diff --git a/tools
Praneeth Prakhya
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/fill_buf.c | 175 +
1 file changed, 175 insertions(+)
create mode 100644 tools/testing/selftests/resctrl/fill_buf.c
diff --git a/tools/testing/selftests
.
Arshiya Hayatkhan Pathan (2):
selftests/resctrl: Add mbm test
selftests/resctrl: Add mba test
Fenghua Yu (2):
selftests/resctrl: Add README for resctrl tests
selftests/resctrl: Add the test in MAINTAINERS
Sai Praneeth Prakhya (4):
selftests/resctrl: Add basic resctrl file system operations
The resctrl selftests will be maintained by RDT maintainers.
Signed-off-by: Fenghua Yu
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 48a65c3a4189..ecd1369ef761 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12270,6 +12270,7 @@ S
a ,
Signed-off-by: Fenghua Yu
---
tools/testing/selftests/resctrl/Makefile| 2 +-
tools/testing/selftests/resctrl/mba_test.c | 175
tools/testing/selftests/resctrl/resctrl.h | 4 +
tools/testing/selftests/resctrl/resctrl_tests.c | 16 ++-
4 files ch
to pass the test.
Default benchmark is built-in fill_buf. But users can specify their
own benchmark by option "-b".
We can add memory bandwidth monitoring for multiple processes in the
future.
Signed-off-by: Arshiya Hayatkhan Pathan
Signed-off-by: Sai Praneeth Prakhya ,
Signed-off-by:
On Tue, Oct 02, 2018 at 07:16:23PM +, Moger, Babu wrote:
>
>
> On 10/02/2018 01:46 PM, Fenghua Yu wrote:
> > On Tue, Oct 02, 2018 at 05:44:47PM +, Moger, Babu wrote:
> >> Hi Fenghua,
> >>
> >>> -----Original Message-
> >>> Fro
On Mon, Sep 24, 2018 at 07:18:54PM +, Moger, Babu wrote:
> The public specification is still in works. Will add the link when it is
> available.
Is this the public AMD QoS spec?
https://support.amd.com/TechDocs/56375_Quality_of_Service_Extensions.pdf
Thanks.
-Fenghua
On Mon, Sep 24, 2018 at 07:19:16PM +, Moger, Babu wrote:
> int parse_bw(void *_buf, struct rdt_resource *r, struct rdt_domain *d);
> +int parse_bw_amd(void *_buf, struct rdt_resource *r, struct rdt_domain *d);
Please note the type of _buf in parse_bw() is changed in latest kernel
to fix
On Tue, Oct 02, 2018 at 05:44:47PM +, Moger, Babu wrote:
> Hi Fenghua,
>
> > -Original Message-
> > From: Fenghua Yu
> > Sent: Tuesday, October 2, 2018 12:07 PM
> > On Mon, Sep 24, 2018 at 07:18:54PM +, Moger, Babu wrote:
> > > The public sp
On Fri, Oct 05, 2018 at 08:55:52PM +, Moger, Babu wrote:
> Introduces a new config parameter PLATFORM_QOS.
>
> This will be used as a common config parameter for both Intel and AMD.
> Each vendor will have their own config parameter to enable RDT feature.
> One for Intel(INTEL_RDT) and one
Reinette Chatre is doing great job on enabling pseudo-locking and other
features in RDT. Add her as co-maintainer for RDT.
Suggested-by: Thomas Gleixner
Signed-off-by: Fenghua Yu
Acked-by: Ingo Molnar
Acked-by: Reinette Chatre
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git
On Sat, Sep 08, 2018 at 02:07:41PM +0200, Thomas Gleixner wrote:
> On Tue, 4 Sep 2018, Fenghua Yu wrote:
> >
> > Signed-off-by: Xiaochen Shen
> > Signed-off-by: Fenghua Yu
>
> Sigh. Am I supposed to assume that this patch is authored by Xiaochen?
Yes, Xi
#mount -t resctrl resctrl -o cdp,mba_MBps /sys/fs/resctrl
#grep resctrl /proc/mountts
/sys/fs/resctrl /sys/fs/resctrl resctrl rw,relatime,cdp,mba_MBps 0 0
Signed-off-by: Xiaochen Shen
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 7 +++
1 file change
of CLOSIDs
supported by the resource.
Introduce a helper function that can be used to query the number of
CLOSIDs that is supported by all resources, irrespective of how many
CLOSIDs are supported by a particular resource.
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel
4/0xa9
[ 130.229733] RIP: 0033:0x7ff6f3c88701
Fix this by ensuring that only the number of supported CLOSIDs are
considered.
Fixes: e651901187ab8 ("x86/intel_rdt: Introduce "bit_usage" to display cache
allocations details")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghu
resource.
Fixes: e0bdfe8e3 ("x86/intel_rdt: Support creation/removal of pseudo-locked
region")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/
("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
b/arch/x86/
e Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt.h | 2 +-
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 24 ++---
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.
roup and ensuring that the CBM checking is only done on
CAT/CDP resources.
Fixes: 49f7b4efa ("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 14 --
1 file changed, 12 i
uot;)
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 12
1 file changed, 12 insertions(+)
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
index ea91750ba27f..74821bc457c0 100644
--- a
roup and ensuring that the CBM checking is only done on
CAT/CDP resources.
Fixes: 49f7b4efa ("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 14 --
1 file changed, 12 i
e Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt.h | 16
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 21 -
2 files changed, 20 insertions(+), 17 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/c
("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
b/arch/x86/
on the minimum across all resources.
Fixes: 95f0b77ef ("x86/intel_rdt: Initialize new resource group with sane
defaults")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/
rdt_bit_usage_show+0x221/0x2b0
Fix this by ensuring that only the number of supported CLOSIDs are
considered.
Fixes: e651901187ab8 ("x86/intel_rdt: Introduce "bit_usage" to display cache
allocations details")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
resource.
Fixes: e0bdfe8e3 ("x86/intel_rdt: Support creation/removal of pseudo-locked
region")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/
Chen Yu reported an issue where reading the resctrl "size" file results in
a divide-by-zero issue on a system with a MBA resource. Further
investigation revealed more issues where the recent RDT features are not
well integrated with the MBA resource handling.
This series consists out of:
- One
sted-by: Chen Yu
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 14 ++
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
index
of CLOSIDs
supported by the resource.
Introduce a helper function that can be used to query the number of
CLOSIDs that is supported by all resources, irrespective of how many
CLOSIDs are supported by a particular resource.
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel
the initial allocation is only attempted on a
CAT resource.
Fixes: 95f0b77ef ("x86/intel_rdt: Initialize new resource group with sane
defaults")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 12
1 file changed, 12
On Sat, Sep 15, 2018 at 12:13:53PM +0200, Thomas Gleixner wrote:
> On Fri, 14 Sep 2018, Fenghua Yu wrote:
> > +int parse_bw(void *_data, struct rdt_resource *r, struct rdt_domain *d);
>
> Sorry no. This keeps the code equally error prone as it was. Why is that
> argum
.kernel.org/r/20180904174614.26682-1-yu.c.c...@intel.com
Reported-by: Chen Yu
Tested-by: Chen Yu
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 14 ++
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/x
on the minimum across all resources.
Fixes: 95f0b77ef ("x86/intel_rdt: Initialize new resource group with sane
defaults")
Signed-off-by: Reinette Chatre
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/
Chen Yu reported an issue where reading the resctrl "size" file results in
a divide-by-zero issue on a system with a MBA resource. Further
investigation revealed more issues where the recent RDT features are not
well integrated with the MBA resource handling.
This series consists out of:
- One
section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
Cc: Rusty Russell <[EMAIL PROTECTED]>
Cc:
the local only percpu data.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
Cc: Rusty Russell <[EMAIL PROTECTED]>
Cc: Christoph Lameter <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
arch/i386/kernel
are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.
igned-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
---
arch/alpha/kernel/vmlinux.lds.S |5 +
arch/arm/kernel/vmlinux.lds.
the local only percpu data.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
---
arch/i386/kernel/init_task.c |2 +-
arch/i386/kernel/irq.c |2 +-
arch/ia64/kernel/smp.c |2 +-
arch/x86_64/kernel/init_task.c |
the local only percpu data.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
---
arch/i386/kernel/init_task.c |2 +-
arch/i386/kernel/irq.c |2 +-
arch/ia64/kernel/smp.c |2 +-
arch/x86_64/kernel/init_task.c |
, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
---
arch/alpha/kernel/vmlinux.lds.S |5 +
arc
Define percpu smp cacheline align interface
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
diff -Nurp linux-2.6.21-rc7.0/arch/alpha/kernel/vmlinux.lds.S
linux-2.6.21-rc7.1/arch/alpha/kernel/vmlinux.lds.S
--- linux-2.6.21-rc7.0/arch/
This is follow-up for Suresh's runqueue align in smp patch at:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0704.1/0340.html
The patches place all of smp cacheline aligned percpu data into
.data.percpu.cacheline_aligned_in_smp. Other percpu data is still in
data.percpu section. The patches
Call percpu smp cacheline align interface.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by: Suresh Siddha <[EMAIL PROTECTED]>
diff -Nurp linux-2.6.21-rc7.0/arch/i386/kernel/init_task.c
linux-2.6.21-rc7.1/arch/i386/kernel/init_task.c
--- linux-2.6.21-rc7.0/arch/i386/kernel
On Fri, May 04, 2007 at 05:12:18PM -0700, Fenghua Yu wrote:
>
> Define percpu smp cacheline align interface
This is updated patch. Per cpu cacheline aligned data section name and macro
name are changed to have better code understanding.
The patches place all of smp cacheline aligned
On Fri, May 04, 2007 at 05:12:31PM -0700, Fenghua Yu wrote:
>
> Call percpu smp cacheline align interface.
>
This is updated patch. Use new macro name
DEFINE_PER_CPU_SHARED_CACHELINE_ALIGNED for better code understanding.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
Acked-by
The local variable "covered" is used without initialization in i386 acpi-cpufreq
driver. The initial value of covered should be 0. The bug will cause memory leak
when hit. The following patch fixes this bug.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
---
arch/i386/kernel/
Updated patch:
Use CPU_MASK_NONE for initil value.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
---
arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c |2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
b/arch/i386/kernel/cpu/c
load driver in acpi_cpufreq_early_init() failure case.
3. Add __init for acpi_cpufreq_early_init().
Thanks.
-Fenghua
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
---
arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c | 39 ++--
drivers/acpi/processor_per
check is not accurate and execution can pass when haw is less than one page
size 4KB. This patch changes the haw sanity check to validate if haw is less
than 4KB.
2. Add dmar_rmrr_units verification.
3. Add parse_dmar_table() verification.
Thanks.
-Fenghua
Signed-off-by: Fenghua Yu <[EMAIL PROTEC
In freq_table.c, show_available_freqs()'s comment is oberviously wrong. Change
the comment to a new one to avoid confusion. Please apply it.
Signed-off-by: Fenghua Yu <[EMAIL PROTECTED]>
---
freq_table.c |2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/c
From: Fenghua Yu
Operation of rep movsb instruction handles zero byte copy. As pointed out by
Linus, there is no need to check zero size in kernel. Removing this redundant
check saves a few cycles in copy user functions.
Signed-off-by: Fenghua Yu
---
arch/x86/lib/copy_user_64.S | 8
From: Fenghua Yu
Since erratum AVR31 in "Intel Atom Processor C2000 Product Family
Specification Update" is published, I add a justification comment for
disabling IO APIC before Local APIC (commit 522e6646).
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/reboot.c | 11 +
From: Fenghua Yu
In 32-bit, __pa_symbol() in CONFIG_DEBUG_VIRTUAL accesses kernel data (e.g.
max_low_pfn) that haven't been setup yet in such early boot phase. To fix the
issue, __pa_nodebug() replaces __pa_symbol() to get a global symbol's physical
address.
Signed-off-by: Fenghua Yu
---
arch
From: Fenghua Yu
Power Limit Notification (X86_FEATURE_PLN) was added in Sandy Bridge
to give the OS the option of knowing when the package has reached
a configured power threshold.
Linux-2.6.36 enabled this feature:
0199114c31798af5b83841b21759b64171060d9b
(x86, hwmon: Package Level Thermal
From: Fenghua Yu
This patch enables Opmask, ZMM_Hi256, and Hi16_ZMM AVX-512 states for
xstate context switch.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/xsave.h | 16 ++--
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/xsave.h b/arch
From: Fenghua Yu
AVX-512 is an extention of AVX2. Its spec can be found at:
http://download-software.intel.com/sites/default/files/managed/71/2e/319433-017.pdf
This patch detects AVX-512 features by CPUID.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/cpufeature.h | 4
1 file
From: Fenghua Yu
In reboot and crash path, when shutdown local APIC, I/O APIC is still active.
This may cause issues because external interrupts can still come in and
disturb local APIC during shutdown process. To quiet external interrupts,
disable I/O APIC before shutdown local APIC.
Signed
From: Fenghua Yu
Detect the xsaves feature in processor extended state enumberation sub-leaf
(eax=0x0d, ecx=1):
Bit 03: Supports xsaves/xrstors and IA32_XSS if set
The IA32_XSS MSR (index DA0H) contains a state-component bitmap that specifies
the state components that software has enabled
From: Fenghua Yu
In standard format, each state is saved in the xsave area in fixed offset.
In compacted format, offset of each saved state only can be calculated during
run time because some xstates may not be saved.
get_xsave_addr() returns address of a given state saved in a xsave area
From: Fenghua Yu
The reserved bits (128~511) in the xsave header must be zero. Clear the bits
here.
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/i387.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index d5dd808..a9a4229
From: Fenghua Yu
If xsaves/xrstors is enabled, compacted format of xsave area will be used
and less memory may be used for context switching per process. Modified
optimization implemented in xsaves/xrstors improves performance of saving
xstate as well.
Signed-off-by: Fenghua Yu
---
arch/x86
From: Fenghua Yu
Since cpu caps are not enabled yet during early booting time, alternative
can not be used in functions to access xsave area. Therefore, we define
two new functions xrstor_state_booting and xsave_state_booting to access
xsave area during early booting time.
Because
From: Fenghua Yu
setup_init_fpu_buf() calls booting time xsaves and xrstors to save/restore
xstate in xsave area.
Signed-off-by: Fenghua Yu
---
arch/x86/kernel/xsave.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel
From: Fenghua Yu
__save_fpu() can be called during early booting time when cpu caps are not
enabled and alternative can not be used yet. Therefore, it calls
xsave_state_booting() to save xstate to task's xsave area.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/fpu-internal.h | 9
From: Fenghua Yu
If xsaves is eanbled, use xsaves/xrstors for saving and restoring xstate.
xsaves supports compacted format, init optimization, modified optimization,
and supervisor states.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/xsave.h | 82
From: Fenghua Yu
With compacted format xsave area supported, the xsave area header is changed
to support both compacted format and standard format xsave area.
The XSAVE header of an XSAVE area comprises the 64 bytes starting at offset
512 from the area\u2019s base address:
- Bytes 7:0
From: Fenghua Yu
If xsaves is eanbled, use xsaves/xrstors for context switch to utilize
compacted format xsave area and modified optimization.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/xsave.h | 37 -
1 file changed, 12 insertions(+), 25 deletions
From: Fenghua Yu
We use legacy xsave/xrstor for user space context. No xsaveopt or xsaves is
used here.
We don't use modified optimization which is implemented in xsaveopt and xsaves
because xrstor/xrstors might track a different application.
We don't use compacted format xsave area in xsaves
From: Fenghua Yu
Define macro to handle fault generated by xsave, xsaveopt, xsaves, xrstor,
xrstors instructions.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/xsave.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
From: Fenghua Yu
Define macros for xsave, xsaveopt, xsaves, xrstor, xrstors inline
instructions. The instructions will be used for saving and rstoring xstate.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/xsave.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/include
From: Fenghua Yu
Add alternative_input_2 to take two features and respective instructions.
If CPU has feature2, newinstr2 is used.
Otherwise, if CPU has feature1, newinstr1 is used.
Otherwise, oldinstr is used.
Signed-off-by: Fenghua Yu
---
arch/x86/include/asm/alternative.h | 13
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