On 09/23/2015 02:56 AM, Daniel Vetter wrote:
> Another regression for Jairo to track.
> -Daniel
Saw the same problem in 4.3-rc2 as well. Not a one time
deal and easily reproducible.
thanks,
-- Shuah
>
> On Tue, Sep 15, 2015 at 03:26:13AM +0200, Sedat Dilek wrote:
>> Hi,
>>
>> I have reported the
On Tue, Sep 22, 2015 at 03:28:12PM +0200, Johannes Berg wrote:
> On Tue, 2015-09-22 at 21:22 +0800, Yaowei Bai wrote:
> > On Mon, Sep 21, 2015 at 04:11:00PM +0200, Johannes Berg wrote:
> > >
> > > > -static inline int prioq_match(struct snd_seq_event_cell *cell,
> > > > +static inline bool prioq_m
On 09/23/2015 01:57 PM, Peter Rosin wrote:
[...]
Looks pretty good.
One thing I'm concerned about is that this array
> +static const struct mcp4531_cfg mcp4531_cfg[] = {
> + { /* MCP4531-502 */ .wipers = 1, .max_pos = 128, .kohms = 5, },
> + { /* MCP4531-103 */ .wipers = 1, .max_pos =
> This driver code was found as:
>
> https://android.googlesource.com/kernel/tegra/+/aaabb2e045f31e5a970109ffdaae900dd403d17e/drivers/staging/iio/adc
>
> Fixed various compilation issues and test this driver on omap5 evm.
several minor comments below
probably the mfd part should be split out in
Hi!
> > +++ b/drivers/fpga/fpga-mgr.c
> > @@ -0,0 +1,382 @@
> [..]
> > +int fpga_mgr_buf_load(struct fpga_manager *mgr, u32 flags, const char *buf,
> > + size_t count)
> > +{
> > + struct device *dev = &mgr->dev;
> > + int ret;
> > +
> > + if (!mgr)
> > + return -EN
On Mon, Sep 21, 2015 at 04:57:05PM -0700, Hugh Dickins wrote:
> On Mon, 21 Sep 2015, Kirill A. Shutemov wrote:
> > On Mon, Sep 21, 2015 at 01:46:00PM +0900, Sergey Senozhatsky wrote:
> > > Hi,
> > >
> > > 4.3.0-rc1-next-20150918
> > >
> > > [18344.236625] =
> > > [
On Wed, 23 Sep 2015 03:17:59 +0200
"Rafael J. Wysocki" wrote:
> On Tuesday, September 22, 2015 04:34:19 PM Luiz Capitulino wrote:
> > Hi,
>
> Hi,
>
> Please always CC patches related to power management to
> linux...@vger.kernel.org.
>
> Also CCing Len Brown who's the maintainer of the intel_
On Wed, Sep 23, 2015 at 03:11:45PM +0200, Andreas Gruenbacher wrote:
> 2015-09-22 18:06 GMT+02:00 J. Bruce Fields :
> > On Sat, Sep 05, 2015 at 12:27:20PM +0200, Andreas Gruenbacher wrote:
> >> When applying the file masks to an acl, we need to ensure that no
> >> process gets more permissions than
Hello.
On 9/23/2015 3:01 PM, Felipe F. Tonello wrote:
req->actual == req->length means that there is no data left to enqueue,
so free the request.
Signed-off-by: Felipe F. Tonello
---
Changes in v2:
* Re enqueue not fully completed requests, instead of read ALSA buffers.
drivers/usb/gad
2015-09-22 18:06 GMT+02:00 J. Bruce Fields :
> On Sat, Sep 05, 2015 at 12:27:20PM +0200, Andreas Gruenbacher wrote:
>> When applying the file masks to an acl, we need to ensure that no
>> process gets more permissions than allowed by its file mask.
>>
>> This may require inserting an owner@ deny ac
Based on board design USB controller needs explicit software
access to ULPI PHY for controlling VBUS. This patch adds platform
driver support for generic ULPI PHYs and provides a USB2 PHY device
to controllers.
Signed-off-by: Subbaraya Sundeep Bhatta
---
drivers/usb/phy/Kconfig | 1
From: Jonathan McDowell
The split of the 8250 driver into a 8250_base/8250.ko resulted in a
lack of a license for the 8250_base.ko module. This caused the module
to fail to load and the kernel to be tainted. Add the appropriate
MODULE_LICENSE to 8250_port.c, which is always compiled into
8250_bas
Hi Michael,
On 23/09/15 10:55, Michael Ellerman wrote:
> On Tue, 2015-09-22 at 18:15 +0100, Andre Przywara wrote:
>> On 22/09/15 15:06, Andrea Arcangeli wrote:
>>> Andre, could you see if linux-next (which includes -mm) works for you
>>> by just running "cd tools/testing/selftests/vm/ && make"? If
On Wed, Sep 23, 2015 at 3:39 AM, Hugh Dickins wrote:
> This is totally untested, and one of you may quickly prove me wrong;
> but I went in to fix your "Bad page state (mlocked)" by holding pte
> lock across the down_read_trylock of mmap_sem in try_to_unmap_one(),
> then couldn't see why it would
This patch adds binding doc info for generic ULPI PHYs
platform driver.
Signed-off-by: Subbaraya Sundeep Bhatta
---
.../devicetree/bindings/usb/ulpi-platform-phy.txt | 34
1 files changed, 34 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindi
On Tue, Sep 22, 2015 at 08:59:15PM +, Alexandru Moise wrote:
> The value of num_items that start_transaction() ultimately
> always takes is a small one, so a 64 bit integer is overkill.
>
> Also change num_items for btrfs_start_transaction() and
> btrfs_start_transaction_lflush() as well.
>
>
Storvsc driver needs to ensure there are no 'holes' in the presented
sg list (all segments in the middle of the list need to be of PAGE_SIZE).
When a hole is detected storvsc driver creates a 'bounce sgl' without
holes and copies data over with copy_{to,from}_bounce_buffer() functions.
Setting virt
On Tue, Sep 22, 2015 at 09:00:07PM +, Alexandru Moise wrote:
> rsv_count ultimately gets passed to start_transaction() which
> now takes an unsigned int as its num_items parameter.
> The value of rsv_count should always be positive so declare it
> as being unsigned.
>
> Signed-off-by: Alexandr
On Wed, 2015-09-23 at 14:48 +0200, Thierry Reding wrote:
> > > >
> On Wed, Sep 23, 2015 at 11:41:26AM +0300, Andy Shevchenko wrote:
> > On Tue, 2015-09-22 at 16:37 +0200, Thierry Reding wrote:
> > > On Tue, Sep 22, 2015 at 01:10:19PM +0300, Andy Shevchenko wrote:
> >
> > >
> > > >
> -Original Message-
> From: Markus Pargmann [mailto:m...@pengutronix.de]
> Sent: 21 September, 2015 13:55
> To: Jonathan Cameron
> Cc: Srinivas Pandruvada; Tirdea, Irina; Lars-Peter Clausen;
> linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> ker...@pengutronix.de; Markus Pargm
Commit cb7323fffa85 ("lockd: create and use per-net NSM
RPC clients on MON/UNMON requests") introduced per-net
NSM RPC clients. Unfortunately this doesn't make any sense
without per-net nsm_handle.
E.g. the following scenario could happen
Two hosts (X and Y) in different namespaces (A and B) shar
On 23/09/2015 13:07, Borislav Petkov wrote:
>> > + static bool first;
>> >
>> >best = kvm_find_cpuid_entry(vcpu, 0, 0);
>> > + if (first && best) {
>> > + printk("cpuid(0).ebx = %x\n", best->ebx);
>> > + first = false;
>> > + } else if (first)
>> > + printk_rat
Signed-off-by: H. Nikolaus Schaller
---
arch/arm/boot/dts/omap5-uevm.dts | 22 ++
1 file changed, 22 insertions(+)
diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index 3b16e8f..0d4c8ff 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/ar
This driver code was found as:
https://android.googlesource.com/kernel/tegra/+/aaabb2e045f31e5a970109ffdaae900dd403d17e/drivers/staging/iio/adc
Fixed various compilation issues and test this driver on omap5 evm.
Signed-off-by: Pradeep Goudagunta
Signed-off-by: H. Nikolaus Schaller
Signed-off-b
On Tue, 2015-07-21 at 23:56 -0400, Theodore Ts'o wrote:
> > v2: Updated for MS_CGROUPWB -> SB_I_CGROUPWB.
> >
> > Signed-off-by: Tejun Heo
> > Cc: "Theodore Ts'o"
> > Cc: Andreas Dilger
> > Cc: linux-e...@vger.kernel.org
>
> Thanks, applied.
Hi, this patch introduces a regression - a major on
From: Marek Belisko
Code was found at:
https://android.googlesource.com/kernel/tegra/+/a90856a6626d502d42c6e7abccbdf9d730b36270%5E%21/#F1
Signed-off-by: Laxman Dewangan
[Fixed minor typos + add channels list to documentation]
Signed-off-by: Marek Belisko
---
.../devicetree/bindings/iio/adc/pal
Add iio driver for the TI Palmas (twl6035, 6037) including device tree bindings.
It enables the gpadc for the OMAP5 uevm.
This patch series is based on original code taken from Android Tegra kernels:
(https://android.googlesource.com/kernel/tegra/+/aaabb2e045f31e5a970109ffdaae900dd403d17e/drivers/
On Wed, Sep 23, 2015 at 11:41:26AM +0300, Andy Shevchenko wrote:
> On Tue, 2015-09-22 at 16:37 +0200, Thierry Reding wrote:
> > On Tue, Sep 22, 2015 at 01:10:19PM +0300, Andy Shevchenko wrote:
>
> > > --- a/drivers/pwm/pwm-pca9685.c
> > > +++ b/drivers/pwm/pwm-pca9685.c
> > > @@ -26,6 +26,8 @@
> >
> -Original Message-
> From: Markus Pargmann [mailto:m...@pengutronix.de]
> Sent: 21 September, 2015 13:55
> To: Jonathan Cameron
> Cc: Srinivas Pandruvada; Tirdea, Irina; Lars-Peter Clausen;
> linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> ker...@pengutronix.de; Markus Pargm
> -Original Message-
> From: Markus Pargmann [mailto:m...@pengutronix.de]
> Sent: 21 September, 2015 13:55
> To: Jonathan Cameron
> Cc: Srinivas Pandruvada; Tirdea, Irina; Lars-Peter Clausen;
> linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> ker...@pengutronix.de; Markus Pargm
> -Original Message-
> From: Markus Pargmann [mailto:m...@pengutronix.de]
> Sent: 21 September, 2015 13:55
> To: Jonathan Cameron
> Cc: Srinivas Pandruvada; Tirdea, Irina; Lars-Peter Clausen;
> linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> ker...@pengutronix.de; Markus Pargm
> -Original Message-
> From: Markus Pargmann [mailto:m...@pengutronix.de]
> Sent: 16 September, 2015 13:13
> To: Tirdea, Irina
> Cc: Jonathan Cameron; Srinivas Pandruvada; Lars-Peter Clausen;
> linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> ker...@pengutronix.de
> Subject: Re
On Wed, 2015-09-23 at 14:18 +0200, Denys Vlasenko wrote:
> With this .config: http://busybox.net/~vda/kernel_config_ALLYES_Os,
> after deinlining the function size is 821 bytes and there are
> 2 callsites, reducing code size by about 800 bytes.
>
Thanks, all applied.
johannes
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To unsubscribe fr
On 09/23/2015 03:35 AM, Juergen Gross wrote:
Depends on the hardware. On some AMD processors one socket covers
multiple NUMA nodes. This is the critical case. set_sched_topology()
will be called on those machines possibly multiple times when bringing
up additional cpus.
I'm asking because tryi
With this .config: http://busybox.net/~vda/kernel_config_ALLYES_Os,
after deinlining the function size is 821 bytes and there are
2 callsites, reducing code size by about 800 bytes.
Signed-off-by: Denys Vlasenko
CC: Johannes Berg
CC: John Linville
CC: Michal Kazior
CC: linux-wirel...@vger.kern
With this .config: http://busybox.net/~vda/kernel_config_ALLYES_Os,
after deinlining these functions have sizes and callsite counts
as follows:
drv_get_tsf: 634 bytes, 6 calls
drv_set_tsf: 626 bytes, 2 calls
drv_reset_tsf: 617 bytes, 2 calls
Total size reduction is about 4.2 kbytes.
Signed-off-b
With this .config: http://busybox.net/~vda/kernel_config_ALLYES_Os,
after deinlining the function size is 755 bytes and there are
6 callsites.
Total size reduction is about 3.3 kbytes.
Signed-off-by: Denys Vlasenko
CC: Johannes Berg
CC: John Linville
CC: Michal Kazior
CC: linux-wirel...@vger.
On Mon, Sep 14, 2015 at 02:45:28PM +0800, Alison Wang wrote:
> This patch adds dma-coherent property for eTSEC nodes, so
> coherent DMA operations are supported.
>
> Signed-off-by: Alison Wang
Applied, thanks.
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On Sat, Sep 12, 2015 at 10:45:51AM -0700, Dmitry Torokhov wrote:
> Now that the driver respects IRQ trigger settings from device tree, let's
> fix them up in individual DTSes (note that the driver is still compatible
> with older DTSes).
>
> Signed-off-by: Dmitry Torokhov
> ---
...
> arch/arm/bo
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On Fri, 18 Sep 2015, Darren Hart wrote:
> From: Richard Purdie
>
> hid_connect adds various strings to the buffer but they're all
> conditional. You can find circumstances where nothing would be written
> to it but the kernel will still print the supposedly empty buffer with
> printk. This leads
On 23/09/15 02:55, chenfeng wrote:
Hi all,
In IOMMU architecture , how to make two different peripherals share the same
page table ?
In other words , is there a mechanism or structure to make two peripherals get
completely different address.
eg:
peri-A、peri-B and peri-C share the same iova
On Wed, Sep 23, 2015 at 02:16:45AM +0100, Qijiwen wrote:
> In fact the free_unused_memmap function is not invoked when
> CONFIG_SPARSEMEM_VMEMMAP is enabled.
> The reason is that the memmap region is mapped in unit of 2MB, not in unit of
> 4KB.
>
> Below is the source code in arch/arm64/mm/init
Le 23/09/2015 13:55, LABBE Corentin a écrit :
The talitos driver use two dma_map_sg path
according to SG are chained or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing talitos_map_sg, talitos_unmap_sg_chain
and sg_count functions.
Sh
On Tue, Sep 22, 2015 at 7:32 PM, David Rientjes wrote:
>
> I struggle to understand how the approach of randomly continuing to kill
> more and more processes in the hope that it slows down usage of memory
> reserves or that we get lucky is better.
Thank you to one and all for the feedback.
I agr
req->actual == req->length means that there is no data left to enqueue,
so free the request.
Signed-off-by: Felipe F. Tonello
---
Changes in v2:
* Re enqueue not fully completed requests, instead of read ALSA buffers.
drivers/usb/gadget/function/f_midi.c | 10 ++
1 file changed, 6 ins
The commit 3033f14ab78c32687 ("clone: support passing tls argument via C
rather than pt_regs magic") introduced _do_fork() that allowed to pass
@tls parameter.
The old do_fork() is defined only for architectures that are not ready
to use this way and do not define HAVE_COPY_THREAD_TLS.
Let's use
The commit 3033f14ab78c32687 ("clone: support passing tls argument via C
rather than pt_regs magic") introduced _do_fork() that allowed to pass
@tls parameter.
The old do_fork() is defined only for architectures that are not ready
to use this way and do not define HAVE_COPY_THREAD_TLS.
1st patch
The commit 3033f14ab78c32687 ("clone: support passing tls argument via C
rather than pt_regs magic") introduced _do_fork() that allowed to pass
@tls parameter.
The old do_fork() is defined only for architectures that are not ready
to use this way and do not define HAVE_COPY_THREAD_TLS. But the fun
From: Peter Rosin
This is the fifth attempt for a driver for these chips.
Thanks for review comments from Greg Kroah-Hartman, Crt Mori,
Daniel Baluta, Lars-Peter Clauson, Andreas Dannenberg, Peter
Meerwald and Jonathan Cameron. I think and hope I got it all sorted.
Changes since v4:
- Less conv
From: Peter Rosin
Add support for Microchip digital potentiometers and rheostats
MCP4531, MCP4532, MCP4551, MCP4552
MCP4631, MCP4632, MCP4651, MCP4652
DEVICE Wipers Steps Resistor Opts (kOhm) i2c address
MCP4531 1 1295, 10, 50, 100010111x
MCP4532 1
From: Peter Rosin
Signed-off-by: Peter Rosin
---
Documentation/ABI/testing/sysfs-bus-iio |2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio
b/Documentation/ABI/testing/sysfs-bus-iio
index 9398484196c4..2eea468f704d 100644
--- a/Documentation/ABI/te
If CONFIG_PM or CONFIG_PM_SLEEP is not set, driver will not compile
properly.
Signed-off-by: Felipe F. Tonello
---
Changes for v2:
* removed unnecessary #ifdef CONFIG_PM_SLEEP.
drivers/usb/chipidea/core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/chipi
The caam driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing dma_map_sg_chained, dma_unmap_sg_chained
and __sg_count functions.
Signed-off-by: LABBE Corentin
---
drivers/crypto/
The sahara driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing the sahara_sha_unmap_sg function.
Signed-off-by: LABBE Corentin
---
drivers/crypto/sahara.c | 66 ++---
The qce driver use two dma_map_sg path according to SG are chained
or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing qce_mapsg, qce_unmapsg and qce_countsg functions.
Signed-off-by: LABBE Corentin
---
drivers/crypto/qce/ablkcipher.c |
The talitos driver use two dma_map_sg path
according to SG are chained or not.
Since dma_map_sg can handle both case, clean the code with all
references to sg chained.
Thus removing talitos_map_sg, talitos_unmap_sg_chain
and sg_count functions.
Signed-off-by: LABBE Corentin
---
drivers/crypto/t
Hello
Some drivers use two dma_map_sg path according to SG are chained or not.
Since dma_map_sg can handle both case, this patch series clean all code
with references to sg chained.
Note that I could only compile test sahara and caam patch.
And none could be tested due to lack oh hardware.
Rega
HI!
I suspended T40p by mistake, and I got some lovely backtraces as a
result:
Any ideas?
Pavel
[0.00] Initializing cgroup subsys cpu
[0.00] Linux version 4.3.0-rc2+ (pavel@hobit) (gcc version 4.9.2
(Debian 4.9.2-
On 09/22, Linus Torvalds wrote:
>
> However, this now becomes a pattern for the series, and that just makes me
> think
>
> "Why is this not a 'for_each_mm()' pattern helper?"
And we already have other users. And note that oom_kill_process() does _not_
follow this pattern and that is why it is
Hi Peter,
On Wed, Sep 23, 2015 at 4:10 AM, Peter Chen wrote:
> On Tue, Sep 22, 2015 at 07:59:09PM +0100, Felipe F. Tonello wrote:
>> req->actual == req->length means that there is no data left to enqueue,
>> so free the request.
>>
>> Signed-off-by: Felipe F. Tonello
>> ---
>> drivers/usb/gadge
* add new version of emac_regs struct from driver structure perspective
and passing size from actual struct size, not from memory area variable
which set in dts file.
* add three types of network chips for new struct : emac, emac4, emac4sync.
* add emac4sync processing in print_emac_regs.
* thi
On Tue, Sep 22, 2015 at 06:39:52PM -0700, Hugh Dickins wrote:
> On Tue, 22 Sep 2015, Andrey Konovalov wrote:
> > On Tue, Sep 22, 2015 at 8:54 PM, Hugh Dickins wrote:
> > > On Tue, 22 Sep 2015, Andrey Konovalov wrote:
> > >> If anybody comes up with a patch to fix the original issue I easily
> > >>
Hey Alexander,
On Wed, Sep 23, 2015 at 12:22:24PM +0200, Alexander Holler wrote:
> [1.539496] AMD-Vi: Lazy IO/TLB flushing enabled
> [1.545741] AHO: count_annotated 25
> [1.549259] AHO: build inventory
> [1.552517] AHO: ac 81d400d8 ic (null) ID
> 2177560225 deps 0
Register dump out work preventing with
old ethtool + new driver and new ethtool + old driver.
---
drivers/net/ethernet/ibm/emac/core.h |6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/ibm/emac/core.h
b/drivers/net/ethernet/ibm/emac/core.h
index 2
From: Sakari Ailus
The nents argument to the DMA API functions operating on scatterlists is
always the same. The documentation used different argument names and the
matter was not mentioned in Documentation/DMA-API-HOWTO.txt at all. Fix
these.
Signed-off-by: Sakari Ailus
---
Documentation/DMA-
Hi,
This set of two patches improves DMA API function documentation for cache
sync functions operating on scatterlists and fixes related comments in the
ARM implementation.
--
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Sakari
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The comment on the usage of arm_dma_sync_sg_for_cpu(),
arm_dma_sync_sg_for_device(), arm_iommu_sync_sg_for_cpu() and
arm_iommu_sync_sg_for_device() functions wrongly noted that the "nelems"
parameter is the number of sglist entries returned by dma_map_sg(), while
this must be the number of entiries
Hi Peter,
On Wed, Sep 23, 2015 at 8:09 AM, Peter Chen wrote:
> On Tue, Sep 22, 2015 at 07:59:10PM +0100, Felipe F. Tonello wrote:
>> This fix a memory leak that will occur in this case.
>>
>> Signed-off-by: Felipe F. Tonello
>> ---
>> drivers/usb/gadget/function/f_midi.c | 4 +++-
>> 1 file cha
On 09/23/2015, 01:38 PM, Jiri Slaby wrote:
> On 09/22/2015, 05:46 PM, Josh Poimboeuf wrote:
> ...
>> --- /dev/null
>> +++ b/tools/stacktool/elf.c
>> @@ -0,0 +1,403 @@
> ...
>> +static struct section *find_section_by_index(struct elf *elf,
>> + unsigned int in
On 09/22/2015, 05:46 PM, Josh Poimboeuf wrote:
...
> --- /dev/null
> +++ b/tools/stacktool/elf.c
> @@ -0,0 +1,403 @@
...
> +static struct section *find_section_by_index(struct elf *elf,
> + unsigned int index)
> +{
...
> +}
> +
> +static struct symbol *find_
Christoph Hellwig writes:
> On Tue, Sep 22, 2015 at 06:27:50PM +0200, Vitaly Kuznetsov wrote:
>> Storvsc driver needs to ensure there are no 'holes' in the presented
>> sg list (all segments in the middle of the list need to be of PAGE_SIZE).
>
> I think it should instead set a virt_boundary. Th
On Wed, 23 Sep 2015, Guillaume Gomez wrote:
Your subject line is not really matching the subsystem.
git log --oneline include/linux/clockchips.h
should give you a hint.
Thanks,
tglx
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This patch provides infrastructure for passing source files to --event
directly using:
# perf record --event bpf-file.c command
This patch does following works:
1) Allow passing '.c' file to '--event'. parse_events_load_bpf() is
expanded to allow caller tell it whether the passed file is s
This patch utilizes bpf_object__load() provided by libbpf to load all
objects into kernel.
Signed-off-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Brendan Gregg
Cc: Daniel Borkmann
Cc: David Ahern
Cc: He Kuang
Cc: Jiri Olsa
Cc: Kaixu Xia
Cc: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Paul Mackerra
This patch introduces bpf__{un,}probe() functions to enable callers to
create kprobe points based on section names a BPF program. It parses
the section names in the program and creates corresponding 'struct
perf_probe_event' structures. The parse_perf_probe_command() function is
used to do the main
From: He Kuang
This patch generates prologue for a BPF program which fetch arguments
for it. With this patch, the program can have arguments as follow:
SEC("lock_page=__lock_page page->flags")
int lock_page(struct pt_regs *ctx, int err, unsigned long flags)
{
return 1;
}
This patch
This patch introduces a new BPF script to test BPF prologue. The new
script probes at null_lseek, which is the function pointer when we try
to lseek on '/dev/null'.
null_lseek is chosen because it is a function pointer, so we don't need
to consider inlining and LTP.
By extracting file->f_mode, bp
From: He Kuang
Make perf-record command support --vmlinux option if BPF_PROLOGUE is on.
'perf record' needs vmlinux as the source of DWARF info to generate
prologue for BPF programs, so path of vmlinux should be specified.
Short name 'k' has been taken by 'clockid'. This patch skips the short
o
The 'bpf-loader.[ch]' files are introduced in this patch. Which will be
the interface between perf and libbpf. bpf__prepare_load() resides in
bpf-loader.c. Following patches will enrich these two files.
Signed-off-by: Wang Nan
Signed-off-by: Arnaldo Carvalho de Melo
Acked-by: Alexei Starovoitov
After commit 3d39ac538629e4f00a6e1c38d46346f1b8e69505 ("perf machine:
No need to have two DSOs lists"), perf probe with module short name doesn't
work again. For example:
# lsmod | grep e1000e
e1000e233472 0
# cat /proc/modules | grep e1000e
e1000e 233472 0 - Live 0xa
This patch collects 'struct perf_evsel' for every probing points in BPF
object file(s) and fill 'struct evlist'. The previous introduced dummy
event now removed. After this patch, following command:
# perf record --event filter.o ls
Can trace on each probing points defined in filter.o.
The core
This patch appends new syntax to BPF object section name to support
probing at uprobe event. Now we can use BPF program like this:
SEC(
"target=/lib64/libc.so.6\n"
"libcwrite=__write"
)
int libcwrite(void *ctx)
{
return 1;
}
Where, in section name of a program, before the main config
This is the final patch which makes basic BPF filter work. After
applying this patch, users are allowed to use BPF filter like:
# perf record --event ./hello_world.o ls
A bpf_fd field is appended to 'struct evsel', and setup during the
callback function add_bpf_event() for each 'probe_trace_even
When failure occures in add_probe_trace_event(), args in
probe_trace_event is incomplete. Since information in it may be used
in futher, this patch frees the allocated memory and set it to NULL
to avoid dangling pointer.
Signed-off-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Brendan Gregg
Cc: Danie
This patch allows creating only one BPF program for different
'probe_trace_event'(tev) generated by one 'perf_probe_event'(pev), if
their prologues are identical.
This is done by comparing argument list of different tev, and maps type
of prologue and tev using a mapping array. This patch utilizes
In this patch, caller of libbpf is able to control the loaded programs
by installing a preprocessor callback for a BPF program. With
preprocessor, different instances can be created from one BPF program.
This patch will be used by perf to generate different prologue for
different 'struct probe_tra
This patch generates prologue for each 'struct probe_trace_event' for
fetching arguments for BPF programs.
After bpf__probe(), iterate over each programs to check whether
prologue is required. If none of 'struct perf_probe_event' a program
will attach to has at least one argument, simply skip prep
regs_query_register_offset() in dwarf-regs.c is required by BPF prologue.
Make it be compiled if CONFIG_BPF_PROLOGUE is on to avoid building failure
when CONFIG_BPF_PROLOGUE is on but CONFIG_DWARF is not set.
Signed-off-by: Wang Nan
Signed-off-by: He Kuang
Acked-by: Masami Hiramatsu
Cc: Alexei
Although previous patch allows setting BPF compiler related options in
perfconfig, on some ad-hoc situation it still requires passing options
through cmdline. This patch introduces 2 options to 'perf record' for
this propose: --clang-path and --clang-opt.
Signed-off-by: Wang Nan
Cc: Alexei Starov
If both LIBBPF and DWARF are detected, it is possible to create prologue
for eBPF programs to help them accessing kernel data. HAVE_BPF_PROLOGUE
and CONFIG_BPF_PROLOGUE is added as flags for this feature.
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET indicates an architecture
supports converting name
This patch replaces the original toy BPF program with previous introduced
bpf-script-example.c. Dynamically embedded it into 'llvm-src.c'.
The newly introduced BPF program attaches a BPF program at
'sys_epoll_pwait()', and collect half samples from it. perf itself never
use that syscall, so furthe
s/perf-ebpf-for-acme-20150923
for you to fetch changes up to 1465cf7b201b8b21c61fa54ffe15094f66e73ab0:
perf probe: Fix module probing with shortname (2015-09-23 10:44:58 +)
Get rid of dummy events by utilizing new perf probe API.
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by an
eBPF object file. It calls parse_events_load_bpf() to load that file,
which uses bpf__prepare_load() and finally calls bpf_object__open() for
the object files.
This patch enforces existing LLVM test, makes it compile more than one
BPF source file. The compiled results are stored, can be used for other
testcases. Except the first testcase (named LLVM_TESTCASE_BASE), failures
of other test cases are not considered as failure of the whole test.
Adds a kbuil
This patch adds BPF testcase for testing BPF event filtering.
By utilizing the result of 'perf test LLVM', this patch compiles the
eBPF sample program then test it ability. The BPF script in 'perf test
LLVM' collects half of execution of epoll_pwait(). This patch runs 111
times of it, so the resul
Signed-off-by: Guillaume Gomez
---
kernel/time/clocksource.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 841b72f..5e83c38 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -595,12 +595,
Signed-off-by: Guillaume Gomez
---
include/linux/timekeeping.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index ba0ae09..8f776cc 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -83,7 +
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Hey,
Dave Jones schreef op di 22-09-2015 om 21:49 [-0400]:
> On Tue, Sep 22, 2015 at 09:15:58AM -0700, Matt Roper wrote:
> > On Tue, Sep 22, 2015 at 05:13:55PM +0200, Daniel Vetter wrote:
> > > On Tue, Sep 22, 2015 at 08:00:17AM -0700, Jesse Barnes wrote:
> > > > Cc'ing Maarten and Matt; I'm gu
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