hi Vince,
I was able to reproduce the issue you described in:
http://marc.info/?l=linux-kernel=141806390822670=2
I might have found one way that could lead to screwing up
context's refcounts.. could you please try attached patch?
I'm now on 2 days of no crash while it used to happen
3 times a
On Wed, Jan 14, 2015 at 02:10:45PM -0800, Sukadev Bhattiprolu wrote:
>
> From 8e6fb4c58d0d9f4798c191d840e32084b1217cc3 Mon Sep 17 00:00:00 2001
> From: Sukadev Bhattiprolu
> Date: Fri, 21 Nov 2014 20:33:53 -0500
> Subject: [PATCH 1/1] Use dwfl_report_elf() instead of offline.
>
>
Hello, please see the answer below blue:
From: Radim Krčmář
To: Li Kaihang ,
Cc: g...@kernel.org, pbonz...@redhat.com, t...@linutronix.de,
mi...@redhat.com, h...@zytor.com, x...@kernel.org, k...@vger.kernel.org,
linux-kernel@vger.kernel.org
Date: 2015-01-16 上午 02:09
Subject:
> On Thu, Jan 15, 2015 at 07:14:26PM +0900, Namjae Jeon wrote:
> >
> > > > +_require_scratch
> > > > +_require_xfs_io_command "fiemap"
> > > > +_require_xfs_io_command "finsert"
> > > > +_require_xfs_io_command "fcollapse"
> > > > +_do_die_on_error=y
> > >
> > > What is _do_die_on_error for? Seems
> >
> > > > }
> > > > do_collapse_range(offset, size);
> > > > break;
> > > > + case OP_INSERT_RANGE:
> > > > + TRIM_OFF(offset, file_size);
> > > > + TRIM_LEN(offset, size, maxfilelen - file_size);
> > >
> > > Ugh,
This make sure that we try to allocate hugepages from local node if
allowed by mempolicy. If we can't, we fallback to small page allocation
based on mempolicy. This is based on the observation that allocating pages
on local node is more beneficial than allocating hugepages on remote node.
> On Wed, Jan 14, 2015 at 01:05:17AM +0900, Namjae Jeon wrote:
> > From: Namjae Jeon
> >
> > This patch implements fallocate's FALLOC_FL_INSERT_RANGE for XFS.
> >
> > 1) Make sure that both offset and len are block size aligned.
> > 2) Update the i_size of inode by len bytes.
> > 3) Compute the
On 2015年01月16日 04:31, Mark Brown wrote:
On Thu, Jan 15, 2015 at 03:04:37PM -0500, Jason Cooper wrote:
On Thu, Jan 15, 2015 at 07:02:20PM +, Mark Brown wrote:
There's probably a bit of a process problem here - these patches are all
being posted as part of big and apparently controversial
As the clock can be get from TK/RK pin, so remove the comments.
Signed-off-by: Bo Shen
---
sound/soc/atmel/atmel_ssc_dai.c | 4
1 file changed, 4 deletions(-)
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index e691aab..198661b 100644
---
According to the I2S specification information as following:
- WS = 0, channel 1 (left)
- WS = 1, channel 2 (right)
So, the start event should be TF/RF falling edge.
Reported-by: Songjun Wu
Signed-off-by: Bo Shen
---
sound/soc/atmel/atmel_ssc_dai.c | 18 --
1 file changed,
On 2015年01月16日 02:23, Catalin Marinas wrote:
Hi Grant,
On Thu, Jan 15, 2015 at 04:26:20PM +, Grant Likely wrote:
On Wed, Jan 14, 2015 at 3:04 PM, Hanjun Guo wrote:
This is the v7 of ACPI core patches for ARM64 based on ACPI 5.1
I'll get right to the point: Can we please have this
On Fri, Jan 16, 2015 at 09:16:00AM +0200, Michael S. Tsirkin wrote:
>
> So let's add this to maintainers?
> Will you ack something like below?
Sure I'll add that.
Thanks!
--
Email: Herbert Xu
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key:
n)
> of_node_clear_flag(client->dev.of_node, OF_POPULATED);
> ^
>
> Caused by commit d5285c36e6d2 ("i2c: Mark instantiated device nodes
> with OF_POPULATE").
>
> I have used the version of the i2c tree from next-2015
On Fri, Jan 16, 2015 at 10:21:09AM +1100, Herbert Xu wrote:
> On Thu, Jan 15, 2015 at 01:50:42PM +0200, Michael S. Tsirkin wrote:
> > makes code look a bit prettier.
> >
> > Signed-off-by: Michael S. Tsirkin
>
> Please resend this patch with a cc to linux-cry...@vger.kernel.org.
>
> Thanks!
On Thu, Jan 15, 2015 at 02:49:20PM -0800, Andrew Morton wrote:
> On Fri, 16 Jan 2015 00:18:12 +0200 "Michael S. Tsirkin"
> wrote:
>
> > for_each_zone_zonelist_nodemask wants an enum zone_type
> > argument, but is passed gfp_t:
> >
> > mm/vmscan.c:2658:9:expected int enum zone_type [signed]
On 16 January 2015 at 12:25, kbuild test robot wrote:
> tree: https://git.linaro.org/people/vireshk/linux cpufreq/core/locking
> head: 12d5339e685739289c2f629c943b8bfad4c64f1e
> commit: fbce49b78afdaeeaee3017cfbd968e44ddba8496 [57/60] cpufreq: Drop
> forward declaration of
tree: https://git.linaro.org/people/vireshk/linux cpufreq/core/locking
head: 12d5339e685739289c2f629c943b8bfad4c64f1e
commit: fbce49b78afdaeeaee3017cfbd968e44ddba8496 [57/60] cpufreq: Drop forward
declaration of __cpufreq_boost_trigger_state()
reproduce:
# apt-get install sparse
git
drivers/cpufreq/cpufreq.c:512:5: sparse: symbol '__cpufreq_boost_supported' was
not declared. Should it be static?
Signed-off-by: Fengguang Wu
---
cpufreq.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index
>
> Hello,
Hi Jan,
>
> > +
> > +int file_write_unfreeze(struct inode *inode)
> > +{
> > + struct super_block *sb = inode->i_sb;
> > +
> > + if (!S_ISREG(inode->i_mode))
> > + return -EINVAL;
> > +
> > + spin_lock(>i_lock);
> > +
> > + if (!(inode->i_state &
From: Peter Hong
The original driver completed with TX function, but RX/MSR/MCR/LSR is not
workable with this driver. So we rewrite it to make this device workable.
This patch is tested with PassMark BurnInTest with Cycle-to-115200 +
MCR/MSR check for 15mins & checked with Suspend-To-RAM/DISK
Based on the cyapa core, add the gen5 trackpad device's basic functions
supported, so gen5 trackpad device can work with kernel input system.
And also based on the state parse interface, the cyapa driver can
automatically determine the attached is gen3 or gen5 protocol trackpad
device, then set
In order to support multiple different chipsets and communication protocols
trackpad devices in one cyapa driver, the new cyapa driver is re-designed
with one cyapa driver core and multiple device specific functions component.
The cyapa driver core is contained in this patch, it supplies basic
Add firmware image update function supported for gen3 trackpad device,
it can be used through sysfs update_fw interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa_gen3.c | 309 +++
1 file changed, 309 insertions(+)
diff
Add acpi device tree support.
acpi device id "CYAP" is for old gen3 trackpad devices.
acpi device id "CYAP0001" is for new gen5 trackpad devices.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa.c | 13 +
1 file changed, 13 insertions(+)
diff
Add device's basic control and features supported in cyapa driver through
sysfs file system interfaces. These interfaces are commonly used in
pre- and after production, for trackpad device state checking, managing
and firmware image updating.
These interfaces including mode, firmware_version and
Add suspend_scanrate_ms power management interfaces in device's
power group, so users or applications can control the power management
strategy of trackpad device as their requirements.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa.c | 127
Add read baseline function supported for gen3 trackpad device,
it can be used through sysfs baseline interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa_gen3.c | 72
1 file changed, 72 insertions(+)
diff --git
Add force re-calibrate function supported for gen3 trackpad device,
it can be used through sysfs calibrate interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa_gen3.c | 59
1 file changed, 59 insertions(+)
diff
Add read baseline function supported for gen5 trackpad device,
it can be used through sysfs baseline interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa.h | 2 +
drivers/input/mouse/cyapa_gen5.c | 640 +++
2
Add firmware image update function supported for gen5 trackpad device,
it can be used through sysfs update_fw interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/Kconfig | 1 +
drivers/input/mouse/cyapa_gen5.c | 391
Add runtime_suspend_scanrate_ms power management interfaces in device's
power group, so users or applications can control the runtime power
management strategy of trackpad device as their requirements.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa.c | 184
Add force re-calibrate function supported for gen5 trackpad device,
it can be used through sysfs calibrate interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/cyapa_gen5.c | 65
1 file changed, 65 insertions(+)
diff
V18 patches have below updates, details of other updates see history list:
1) Fix 'cyapa_runtime_suspend' undeclared compiling issue in latest
kernel-next source code. Verified on next-20150114 with make C=1.
2) Optimize enter bootloader failed for some chipset takes longer time issue.
This
Hi Felipe,
Today's linux-next merge of the usb-gadget tree got a conflict in
drivers/usb/dwc2/gadget.c between commit 62f4f0651ce8 ("usb: dwc2:
gadget: kill requests with 'force' in s3c_hsotg_udc_stop()") from the
usb.current tree and commit c6f5c050e2a7 ("usb: dwc2: gadget: add
bi-directional
Jia He,
On Fri, Jan 16, 2015 at 09:45:47AM +0800, Jia He wrote:
> This fixes the space warning checked by check_patch.pl
^^^
checkpatch.pl
>
[...]
> -static void kportal_memhog_free (struct
On Thu, Jan 15, 2015 at 4:42 PM, Rob Herring wrote:
> On Thu, Jan 15, 2015 at 7:55 AM, Mark Rutland wrote:
>> On Thu, Jan 15, 2015 at 01:52:01PM +, Mark Rutland wrote:
>>> On Wed, Jan 14, 2015 at 08:58:18PM +, Suman Anna wrote:
>>> > +- hwlock-base-id: An unique base Id for the locks
If vcpu has a interrupt in vmx non-root mode, we will
kick that vcpu to inject interrupt timely. With posted
interrupt processing, the kick intr is not needed, and
interrupts are fully taken care of by hardware.
In nested vmx, this feature avoids much more vmexits
than non-nested vmx.
This patch
With virtual interrupt delivery, the hardware prevent KVM from
the low efficiency interrupt inject way. In nested vmx, it is
a important feature, we can reduce much more nested-vmexit,
especially in high throughput scenes.
Signed-off-by: Wincy Van
---
arch/x86/kvm/vmx.c | 49
We can reduce apic register virtualization cost with this feature,
it is also a requirement for virtual interrupt delivery and posted
interrupt processing.
Signed-off-by: Wincy Van
---
arch/x86/kvm/vmx.c | 12 ++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git
When L2 is using x2apic, we can use virtualize x2apic mode to
gain higher performance.
This patch also introduces nested_vmx_check_apicv_controls
for the nested apicv patches.
Signed-off-by: Wincy Van
---
arch/x86/kvm/vmx.c | 49 -
1 files
> > For implementation purpose, initially we tried to keep percpu usage counters
> > inside struct inode just like there is struct sb_writers in super_block.
> > But considering that it will significantly bloat up struct inode when
> > actually
> > the usage of file write freeze will be
To enable nested apicv support, we need per-cpu vmx
control MSRs:
1. If in-kernel irqchip is enabled, we can enable nested
posted interrupt, we should set posted intr bit in
the nested_vmx_pinbased_ctls_high.
2. If in-kernel irqchip is disabled, we can not enable
nested posted
Hi Wolfram,
On Fri, 2015-01-09 at 18:21 +0100, Wolfram Sang wrote:
>
> + */
> +struct i2c_adapter_quirks {
> + u64 flags;
> + int max_num_msgs;
> + u16 max_write_len;
> + u16 max_read_len;
> + u16 max_comb_write_len;
> + u16 max_comb_read_len;
> +};
> +
> +#define
In nested vmx, the efficiency of interrupt virtualization is
very important, especially in high throughput scenes.
This patch set enables nested apicv support, which makes a
huge improvement in nested interrupt virtualization.
I also have done some simple tests:
L0: Intel Xeon E5-2630 v2
L1:
From: Xander Huff
Date: Thu, 15 Jan 2015 15:45:15 -0600
> Spaces should surround add, multiply, and bitshift operators.
>
> Signed-off-by: Xander Huff
Applied.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More
From: Xander Huff
Date: Thu, 15 Jan 2015 15:45:14 -0600
> Change comments to not exceed 80 characters per line.
> Update block comments in macb.h to start on the line after /*.
>
> Signed-off-by: Xander Huff
Applied.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel"
From: Xander Huff
Date: Thu, 15 Jan 2015 15:45:16 -0600
> 10/100 MACB does not have the same statistics possibilities as GEM. Separate
> macb_ethtool_ops to make a new GEM-specific struct with the new statistics
> functions included.
>
> Signed-off-by: Xander Huff
Applied.
--
To unsubscribe
From: Shrikrishna Khare
Date: Thu, 15 Jan 2015 11:54:30 -0800
> Signed-off-by: Gao Zhenyu
> Signed-off-by: Shrikrishna Khare
> Reviewed-by: Shreyas N Bhatewara
Applied, thank you.
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Hi Lai,
Thanks you for posting the patch-set.
I'll try your it next Monday. So, please wait a while.
Thanks,
Yasuaki Ishimatsu
(2015/01/14 17:54), Lai Jiangshan wrote:
> Hi, All
>
> This patches are un-changloged, un-compiled, un-booted, un-tested,
> they are just shits, I even hope them
On 01/16/2015 06:47 AM, Andrew Morton wrote:
On Wed, 14 Jan 2015 17:06:59 +0530 Vinayak Menon
wrote:
It is observed that sometimes multiple tasks get blocked for long
in the congestion_wait loop below, in shrink_inactive_list. This
is because of vm_stat values not being synced.
(__schedule)
On 01/13/2015 10:28 PM, Mike Looijmans wrote:
On some chips, like the TPS386000, the trigger cannot be disabled
and the CPU must keep toggling the line at all times. Add a switch
"always_running" to keep toggling the GPIO line regardless of the
state of the soft part of the watchdog. The "armed"
I think you are write ... checkpatch.pl was giving the error at the
line so i added a blank line... i will send an updated patch..
On Thu, Jan 15, 2015 at 11:40 PM, Johan Hovold wrote:
> On Thu, Jan 15, 2015 at 06:20:43PM +0100, Linus Walleij wrote:
>> On Tue, Jan 13, 2015 at 4:09 PM, Mohammad
We are please to inform you of our new year promotion award program held 14th
January 2015,which have pronounce your email-address as the lucky winner
of a total sum:of 250,000.
CONTACT:
The claim office/Email:postc...@luckymail.com,with your winning Serial-No:
LE0031#11250PSNL.
From: Fenghua Yu
With more embedded systems emerging using Quark, among other things,
32-bit kernel matters again. 32-bit machine and kernel uses PAE paging,
which currently wastes at least 4K of memory per process on Linux where we
have to reserve an entire page to support a single 32-byte PGD
Hi Kalle,
Today's linux-next merge of the wireless-drivers-next tree got a
conflict in drivers/net/wireless/iwlwifi/mvm/scan.c between commit
1f9c418fd94c ("iwlwifi: mvm: fix EBS on single scan") from the
wireless-drivers tree and commit a1ed4025765c ("iwlwifi: mvm: Configure
EBS scan ratio")
Debugging of eBPF programs needs some form of printk from the program,
so let programs call limited trace_printk() with %d %u %x %p modifiers only.
Signed-off-by: Alexei Starovoitov
---
include/uapi/linux/bpf.h|1 +
kernel/trace/bpf_trace.c| 61
tracex1_kern.c - C program which will be compiled into eBPF
to filter netif_receive_skb events on skb->dev->name == "lo"
The programs returns 1 to continue storing an event into trace buffer
and returns 0 - to discard an event.
tracex1_user.c - corresponding user space component that
forever
User interface:
fd = open("/sys/kernel/debug/tracing/__event__/filter")
write(fd, "bpf_123")
where 123 is process local FD associated with eBPF program previously loaded.
__event__ is static tracepoint event or syscall.
(kprobe support is in next patch)
Once program is successfully attached to
this example has two probes in one C file that attach to different tracepoints
and use two different maps.
1st probe is the similar to dropmon.c. It attaches to kfree_skb tracepoint and
count number of packet drops at different locations
2nd probe attaches to syscalls/sys_enter_write and
simple packet drop monitor:
- in-kernel eBPF program attaches to kfree_skb() event and records number
of packet drops at given location
- userspace iterates over the map every second and prints stats
Usage:
$ sudo dropmon
location 0x81695995 count 1
location 0x816d0da9 count 2
eBPF C program attaches to block_rq_issue/block_rq_complete events to calculate
IO latency. Then it waits for the first 100 events to compute average latency
and uses range [0 .. ave_lat * 2] to record histogram of events in this latency
range.
User space reads this histogram map every 2 seconds
the logic of the example is similar to tracex2, but syscall 'write' statistics
is capturead from kprobe placed at sys_write function instead of through
syscall instrumentation.
Also tracex4_kern.c has a different way of doing log2 in C.
Note, unlike tracepoint and syscall programs, kprobe programs
bpf_ktime_get_ns() is used by programs to compue time delta between events
or as a timestamp
Signed-off-by: Alexei Starovoitov
---
include/uapi/linux/bpf.h |1 +
kernel/trace/bpf_trace.c | 10 ++
2 files changed, 11 insertions(+)
diff --git a/include/uapi/linux/bpf.h
introduce new type of eBPF programs BPF_PROG_TYPE_KPROBE_FILTER.
Such programs are allowed to call the same helper functions
as tracing filters, but bpf_context is different:
For tracing filters bpf_context is 6 arguments of tracepoints or syscalls
For kprobe filters bpf_context == pt_regs
Hi Ingo, Steven,
This patch set is based on tip/master.
It adds ability to attach eBPF programs to tracepoints, syscalls and kprobes.
Mechanism of attaching:
- load program via bpf() syscall and receive program_fd
- event_fd = open("/sys/kernel/debug/tracing/events/.../filter")
- write 'bpf-123'
On Thu, 15 Jan 2015 21:57:58 -0600 (CST)
Christoph Lameter wrote:
> > I get:
> >
> > mov%gs:0x18(%rax),%rdx
> >
> > Looks to me that %gs is used.
>
> %gs is used as a segment prefix. That does not add significant cycles.
> Retrieving the content of %gs and loading it into
On Thu, 15 Jan 2015 22:51:30 -0500
Steven Rostedt wrote:
>
> I haven't done benchmarks in a while, so perhaps accessing the %gs
> segment isn't as expensive as I saw it before. I'll have to profile
> function tracing on my i7 and see where things are slow again.
I just ran it on my i7, and
> I get:
>
> mov%gs:0x18(%rax),%rdx
>
> Looks to me that %gs is used.
%gs is used as a segment prefix. That does not add significant cycles.
Retrieving the content of %gs and loading it into another register would
be expensive in terms of cpu cycles.
--
To unsubscribe from this
Signed-off-by: Yijing Wang
---
arch/x86/pci/acpi.c | 36
1 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 8edea63..f9a55c2 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -467,6
From: Yijing Wang
Signed-off-by: Yijing Wang
---
arch/ia64/pci/pci.c | 34 ++
1 files changed, 18 insertions(+), 16 deletions(-)
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index e457015..7736c02 100644
--- a/arch/ia64/pci/pci.c
+++
Introduce new scan function pci_scan_root_bridge() to
support host bridge drivers that need to provide platform
own pci_host_bridge_ops.
Signed-off-by: Yijing Wang
---
drivers/pci/probe.c | 21 +
include/linux/pci.h |3 +++
2 files changed, 24 insertions(+), 0
Now we have weak functions like pcibios_root_bridge_prepare()
to setup pci host bridge, We could introduce pci_host_bridge_ops
which contain host bridge specific ops to setup pci_host_bridge.
Then host bridge driver could add pci_host_bridge_ops hooks
intead of weak function to setup
Save platform specific sysdata in pci_host_bridge
drvdata, host bridge specific operation need to
access it before the pci bus creation.
Signed-off-by: Yijing Wang
---
drivers/pci/host-bridge.c |4 +++-
drivers/pci/probe.c | 18 --
include/linux/pci.h |3
Now no one use weak pcibios_root_bridge_prepare(),
we could remove it.
Signed-off-by: Yijing Wang
---
drivers/pci/probe.c | 15 ---
include/linux/pci.h |2 --
2 files changed, 0 insertions(+), 17 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index
Sometimes, we need to know the highest reserved
busnr for children bus. Because parent's
bus->busn_res could have padding in it.
This function return the max child busnr as
pci_scan_child_bus().
Signed-off-by: Yijing Wang
---
drivers/pci/hotplug/acpiphp_glue.c | 29
Pcibios_root_bridge_prepare() in powerpc is used
to set root bus speed. So rename it to
pcibios_set_root_bus_speed() for better readability.
Signed-off-by: Yijing Wang
---
arch/powerpc/include/asm/machdep.h |2 +-
arch/powerpc/kernel/pci-common.c |4 ++--
Use pci_scan_root_bus() instead of pci_create_root_bus() +
pci_scan_child_bus() for simplicity.
Signed-off-by: Yijing Wang
---
drivers/pci/host/pcie-designware.c |4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/host/pcie-designware.c
Now no one use pci_create_root_bus(), we could remove it
and rename __pci_create_root_bus() to pci_create_root_bus().
Signed-off-by: wangyij...@huawei.com
---
drivers/pci/probe.c | 27 ---
include/linux/pci.h |3 ---
2 files changed, 8 insertions(+), 22 deletions(-)
Now we save the domain number in pci_host_bridge,
we could remove pci_bus_assign_domain_nr() and
clean the domain member in pci_bus.
Signed-off-by: Yijing Wang
---
drivers/pci/pci.c | 48 +---
drivers/pci/probe.c | 12
From: Arnd Bergmann
Use pci_scan_root_bus() instead of deprecated function
pci_scan_bus_parented().
Signed-off-by: Arnd Bergmann
Signed-off-by: Yijing Wang
CC: Konrad Rzeszutek Wilk
CC: xen-de...@lists.xenproject.org
---
drivers/pci/xen-pcifront.c | 10 +++---
1 files changed, 7
Use pci_scan_root_bus() instead of pci_create_root_bus() +
pci_scan_child_bus() for simplicity.
Signed-off-by: Yijing Wang
---
drivers/pci/host/pci-xgene.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
Export find_pci_host_bridge().
Signed-off-by: Yijing Wang
---
drivers/pci/host-bridge.c |2 +-
include/linux/pci.h |1 +
2 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index ccbf168..74f7572 100644
---
Pci_scan_bus() is called by legacy pci host drivers,
the legacy host drivers mean they use NUll as parent
device, use all IO/MEM as default resources. Rename
pci_scan_bus() to pci_scan_bus_legacy() for better
readability.
Signed-off-by: Yijing Wang
---
arch/alpha/kernel/sys_nautilus.c |2
Now pci_host_bridge holds the domain number,
so we could eliminate all platform specific
pci_domain_nr().
Signed-off-by: Yijing Wang
---
arch/alpha/include/asm/pci.h |2 --
arch/ia64/include/asm/pci.h |1 -
arch/microblaze/pci/pci-common.c | 11 ---
Pci_bus_add_devices() should not be placed in pci_scan_bus().
Now pci device will be added to driver core once its
creation. All things left in pci_bus_add_devices() are
driver attachment and other trivial sysfs things.
Pci_scan_bus() should be the function responsible for
scanning PCI devices,
No one uses pci_scan_bus_parented() any more,
remove it.
Signed-off-by: Yijing Wang
---
drivers/pci/probe.c | 19 ---
include/linux/pci.h |2 --
2 files changed, 0 insertions(+), 21 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 7cf577f..e44de73
Currently, we use int type for bus number in
pci_create_root_bus(), pci_scan_root_bus() and
pci_scan_bus_legacy. Because PCI bus number
always <= 255, so we could change the bus number
argument type to u32, and combine PCI domain and
bus number in one. Also add a domain member in
pci_host_bridge
On Thu, 15 Jan 2015 21:27:14 -0600 (CST)
Christoph Lameter wrote:
>
> The %gs register is not used since the address of the per cpu area is
> available as one of the first fields in the per cpu areas.
Have you disassembled your code?
Looking at put_cpu_partial() from 3.19-rc3 where it does:
This series is based on Bjorn's pci-next branch.
Patch 1-4 ripped out pci_bus_add_devices() from pci scan interfaces
for better pci scan flow.
Patch 5-11 make a generic pci_host_bridge to hold pci_host_bridge
related informations, and introduce a pci_host_bridge_ops to
support platform host
Now we could use pci_scan_root_bridge() to scan
pci buses, provide sparc specific pci_host_bridge_ops.
Signed-off-by: Yijing Wang
---
arch/sparc/kernel/pci.c | 30 --
1 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/arch/sparc/kernel/pci.c
Just like pci_scan_bus(), we also should rip out
pci_bus_add_devices() from pci_scan_root_bus().
Lots platforms first call pci_scan_root_bus(), but
after that, they call pci_bus_size_bridges() and
pci_bus_assign_resources(). Place pci_bus_add_devices()
in pci_scan_root_bus() hurts PCI scan logic.
Introduce pci_host_assign_domain_nr() to assign domain
number for pci_host_bridge. Later we will remove
pci_bus_assign_domain_nr().
Signed-off-by: Yijing Wang
---
drivers/pci/pci.c | 47 +++
include/linux/pci.h |4
2 files changed, 51
Now we could pass PCI domain combined with bus number
in u32 argu. Because in arm/arm64, PCI domain number
is assigned by pci_bus_assign_domain_nr(). So we leave
pci_scan_root_bus() and pci_create_root_bus() in arm/arm64
unchanged. A new function pci_host_assign_domain_nr()
will be introduced for
Mvebu_pcie_scan_bus() is not necessary, we could use
pci_common_init_dev() instead of pci_common_init(),
and pass the device pointer as the parent. Then
pci_scan_root_bus() will be called to scan the pci busses.
Signed-off-by: Yijing Wang
---
drivers/pci/host/pci-mvebu.c | 18
Now pci_scan_root_bus() is almost simliar to
pci_create_root_bus() + pci_scan_child_bus().
So we could use common pci_scan_root_bus() in
pci_common_init_dev() to scan pci busses.
tegra_pcie_scan_bus() is redundant, remove it.
Signed-off-by: Yijing Wang
---
drivers/pci/host/pci-tegra.c | 15
From: Yijing Wang
Now pci_bus_add_devices() has been ripped out
from pci_scan_root_bus(), we could use pci_scan_root_bus()
instead of pci_create_root_bus() + pci_scan_child_bus()
for simplicity.
Signed-off-by: Yijing Wang
---
drivers/parisc/dino.c| 11 ++-
Now we could use pci_scan_root_bridge() to scan
pci buses, provide powerpc specific pci_host_bridge_ops.
Signed-off-by: Yijing Wang
---
arch/powerpc/kernel/pci-common.c | 57 --
1 files changed, 36 insertions(+), 21 deletions(-)
diff --git
We want to make a generic pci_host_bridge, then we could
place common PCI infos like domain number in it. Ripping
out pci_host_bridge creation from pci_create_root_bus()
make code more better readability. Further more, we could
use the generic pci_host_bridge to hold host bridge specific
On Thu, 15 Jan 2015, Andrew Morton wrote:
> And perhaps some explanation here as to why virt_to_head_page() can
> safely use compound_head_fast(). There's an assumption here that
> nobody will be dismantling the compound page while virt_to_head_page()
> is in progress, yes? And this assumption
esai_ipg clock's parent is ahb, not ipg.
Signed-off-by: Shengjiu Wang
---
arch/arm/mach-imx/clk-imx6q.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 2daef61..d04a430 100644
---
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