On Wed, 2013-04-17 at 12:44 -0600, Chris Friesen wrote:
Hi,
I'm trying to wrap my head around how linux handles branch tracing on
Book III-E. I think I understand how we set MSR[DE] and DBCR0[IDM|BT],
and how we handle fixing things up if an instruction being traced causes
an exception.
On Thu, 2013-04-18 at 13:33 +0800, Gavin Shan wrote:
The firmware should have supplied correct information for the kernel
to figure out the page size array, which is traced by mmu_psize_defs[].
Otherwise, the kernel will fail back to use solely 4KB page size
and copy mmu_psize_defaults_old[]
Hi Michael,
Today's linux-next merge of the ppc-temp tree got a conflict in
arch/metag/mm/Kconfig between commit 2b8660ed3bfe (memblock: Kill
ARCH_POPULATES_NODE_MAP once more) from the metag tree and commit
45b02f8d94e3 (memblock: kill config MAX_ACTIVE_REGIONS) from the
ppc-temp tree.
I fixed
This patch populates BHRB specific data for power_pmu structure. It
also implements POWER8 specific BHRB filter and configuration functions.
Signed-off-by: Anshuman Khandual khand...@linux.vnet.ibm.com
---
arch/powerpc/perf/power8-pmu.c | 57 +-
1 file
This patch adds couple of generic functions to power_pmu structure
which would configure the BHRB and it's filters. It also adds
representation of the number of BHRB entries present on the PMU.
A new PMU flag PPMU_BHRB would indicate presence of BHRB feature.
Signed-off-by: Anshuman Khandual
This patch adds new POWER8 instruction encoding for reading
the BHRB buffer entries and also clearing it. Encoding for
clrbhrb instruction is straight forward. But mfbhrbe
encoding involves reading a certain index of BHRB buffer
into a particular GPR register.
Signed-off-by: Anshuman Khandual
Provides basic enablement for perf branch stack sampling framework on
POWER8 processor based platforms. Adds new BHRB related elements into
cpu_hw_event structure to represent current BHRB config, BHRB filter
configuration, manage context and to hold output BHRB buffer during
PMU interrupt before
This patch adds the basic assembly code to read BHRB buffer. BHRB entries
are valid only after a PMU interrupt has happened (when MMCR0[PMAO]=1)
and BHRB has been freezed. BHRB read should not be attempted when it is
still enabled (MMCR0[PMAE]=1) and getting updated, as this can produce
Branch History Rolling Buffer (BHRB) is a new PMU feaure in IBM
POWER8 processor which records the branch instructions inside the execution
pipeline. This patchset enables the basic functionality of the feature through
generic perf branch stack sampling framework.
Sample output
On Wed, 17 Apr 2013 12:22:23 -0400, Jason Cooper ja...@lakedaemon.net wrote:
On Wed, Apr 17, 2013 at 05:17:48PM +0100, Grant Likely wrote:
On Wed, Apr 17, 2013 at 5:10 PM, Jason Cooper ja...@lakedaemon.net wrote:
On Wed, Apr 17, 2013 at 05:00:15PM +0100, Grant Likely wrote:
On Tue, 16 Apr
On Wed, Apr 17, 2013 at 04:42:48PM +0100, Linus Walleij wrote:
On Tue, Apr 16, 2013 at 12:18 PM, Andrew Murray andrew.mur...@arm.com wrote:
This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.
Signed-off-by: Andrew Murray andrew.mur...@arm.com
On Thu, Apr 18, 2013 at 01:48:32PM +0100, Grant Likely wrote:
On Wed, 17 Apr 2013 12:22:23 -0400, Jason Cooper ja...@lakedaemon.net wrote:
On Wed, Apr 17, 2013 at 05:17:48PM +0100, Grant Likely wrote:
On Wed, Apr 17, 2013 at 5:10 PM, Jason Cooper ja...@lakedaemon.net
wrote:
On Wed,
On Thu, Apr 18, 2013 at 01:59:10PM +0100, Andrew Murray wrote:
On Wed, Apr 17, 2013 at 04:42:48PM +0100, Linus Walleij wrote:
On Tue, Apr 16, 2013 at 12:18 PM, Andrew Murray andrew.mur...@arm.com
wrote:
This patch converts the pci_load_of_ranges function to use the new common
On Tue, 16 Apr 2013 11:18:27 +0100, Andrew Murray andrew.mur...@arm.com wrote:
This patch factors out common implementation patterns to reduce overall kernel
code and provide a means for host bridge drivers to directly obtain struct
resources from the DT's ranges property without relying on
On Tue, 16 Apr 2013 11:18:28 +0100, Andrew Murray andrew.mur...@arm.com wrote:
This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.
Signed-off-by: Andrew Murray andrew.mur...@arm.com
Signed-off-by: Liviu Dudau liviu.du...@arm.com
Reviewed-by: Rob
On Thu, Apr 18, 2013 at 02:44:01PM +0100, Grant Likely wrote:
On Tue, 16 Apr 2013 11:18:27 +0100, Andrew Murray andrew.mur...@arm.com
wrote:
This patch factors out common implementation patterns to reduce overall
kernel
code and provide a means for host bridge drivers to directly obtain
On Thu, Apr 18, 2013 at 02:45:35PM +0100, Grant Likely wrote:
On Tue, 16 Apr 2013 11:18:28 +0100, Andrew Murray andrew.mur...@arm.com
wrote:
This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.
Signed-off-by: Andrew Murray andrew.mur...@arm.com
On Thu, Apr 18, 2013 at 3:24 PM, Andrew Murray andrew.mur...@arm.com wrote:
On Thu, Apr 18, 2013 at 02:44:01PM +0100, Grant Likely wrote:
On Tue, 16 Apr 2013 11:18:27 +0100, Andrew Murray andrew.mur...@arm.com
wrote:
/* Act based on address space type */
res = NULL;
On Thu, Apr 18, 2013 at 04:29:54PM +0100, Grant Likely wrote:
On Thu, Apr 18, 2013 at 3:24 PM, Andrew Murray andrew.mur...@arm.com wrote:
On Thu, Apr 18, 2013 at 02:44:01PM +0100, Grant Likely wrote:
On Tue, 16 Apr 2013 11:18:27 +0100, Andrew Murray andrew.mur...@arm.com
wrote:
On Tue, Apr 16, 2013 at 12:26 PM, David Howells dhowe...@redhat.com wrote:
Supply accessor functions to set attributes in proc_dir_entry structs.
The following are supplied: proc_set_size() and proc_set_user().
Signed-off-by: David Howells dhowe...@redhat.com
cc:
Hi Adhemerval,
This patch implement the time syscall as vDSO. I have a glibc patch
to use it as IFUNC (as latest gettimeofday patch). Below the perf
numbers:
Baseline PPC32: 380 nsec
Baseline PPC64: 352 nsec
vdso PPC32: 20 nsec
vdso PPC64: 20 nsec
Very nice speedup. One small
Hi Aneesh,
On 04/04/2013 01:57 PM, Aneesh Kumar K.V wrote:
Hi,
This patchset adds transparent hugepage support for PPC64.
TODO:
* hash preload support in update_mmu_cache_pmd (we don't do that for hugetlb)
Some numbers:
The latency measurements code from Anton found at
On Thu, 2013-04-18 at 11:46 +1000, Michael Ellerman wrote:
On Wed, May 30, 2012 at 05:31:58PM +0800, Li Zhong wrote:
I'm not sure whether it makes sense to add this dependency to avoid
CONFI_NUMA !CONFIG_SMP.
I want to do this because I saw some build errors on next-tree when
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