From: Sergei Trofimovich
Found by uselex.rb:
> set_state_private: [R]: exported from: fs/btrfs/disk-io.o fs/btrfs/built-in.o
> fs/btrfs/btrfs.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/extent_io.c | 2 +-
fs/btrfs/extent_io.h | 1 -
2 files changed, 1 insertion(+), 2 deletions(-)
diff
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_lookup_fs_root: [R]: exported from: fs/btrfs/disk-io.o
> fs/btrfs/built-in.o fs/btrfs/btrfs.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/disk-io.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_get_inode_ref_index: [R]: exported from: fs/btrfs/inode-item.o
> fs/btrfs/btrfs.o fs/btrfs/built-in.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/ctree.h | 6 -
fs/btrfs/inode-item.c | 65
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_start_transaction_lflush: [R]: exported from: fs/btrfs/btrfs.o
> fs/btrfs/transaction.o fs/btrfs/built-in.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/transaction.c | 7 ---
fs/btrfs/transaction.h | 2 --
2 files changed, 9
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_write_and_wait_marked_extents: [R]: exported from: fs/btrfs/btrfs.o
> fs/btrfs/transaction.o fs/btrfs/built-in.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/transaction.c | 4 ++--
fs/btrfs/transaction.h | 2 --
2 files changed, 2
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_read_root_item: [R]: exported from: fs/btrfs/btrfs.o
> fs/btrfs/built-in.o fs/btrfs/root-tree.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/ctree.h | 2 --
fs/btrfs/root-tree.c | 4 ++--
2 files changed, 2 insertions(+), 4
From: Sergei Trofimovich
Found by uselex.rb:
> btrfs_reada_detach: [R]: exported from: fs/btrfs/btrfs.o fs/btrfs/built-in.o
> fs/btrfs/reada.o
Signed-off-by: Sergei Trofimovich
---
fs/btrfs/ctree.h | 1 -
fs/btrfs/reada.c | 9 +
2 files changed, 1 insertion(+), 9 deletions(-)
diff
From: Sergei Trofimovich
Hi guys!
TL;DR:
the patches remove (currently or already) dead code
and localize symbol visibility used only in one module.
Thanks!
The Story:
Once upon a time I've got very simple idea to find dead code
in large C/C++ mixed project at work.
The things of my
On Wed, Aug 07, 2013 at 02:28:49PM -0700, Bob Smith wrote:
> Greg Kroah-Hartman wrote:
> > You ignored my mknod comment.
> Yes, proxy is a type of IPC. It's closest counterpart in the
> kernel now is a named pipe. The kernel does not try to create
> named pipes automatically. Named pipes are
Greg Kroah-Hartman wrote:
>>echo 1 > /proc/sys/net/ipv4/ip_forward # procfs
>>echo 75 > /dev/motors/left/speed# proxy
>>echo 5 > /dev/wpa_supplicant/use_channel # proxy
> No it shouldn't, that is userspace talking to the kernel, you aren't
> doing that at all.
On 08/07/2013 04:47 PM, Linus Torvalds wrote:
> On Wed, Aug 7, 2013 at 1:19 PM, Jason Baron wrote:
>> The whole point of the thread started with wanting to move the default
>> 'disabled' branch further out-of-line.
> Yeah, but I always disagreed with that.
>
> Putting the unusual code out-of-line
Jan Kara wrote:
> On Wed 07-08-13 23:24:03, Kirill A. Shutemov wrote:
> > Jan Kara wrote:
> > > On Wed 07-08-13 19:32:36, Kirill A. Shutemov wrote:
> > > > Jan Kara wrote:
> > > > > On Sun 04-08-13 05:17:03, Kirill A. Shutemov wrote:
> > > > > > From: "Kirill A. Shutemov"
> > > > > >
> > > > > >
Arnaldo Carvalho de Melo wrote:
>Em Wed, Aug 07, 2013 at 03:19:57PM +1000, Michael Ellerman escreveu:
>> On Tue, Aug 06, 2013 at 03:59:37PM +0200, Jiri Olsa wrote:
>> > On Tue, Aug 06, 2013 at 11:28:05PM +1000, Michael Ellerman wrote:
>> > > +if (evsel->leader == evsel)
>> > > +
On Wed, Aug 07, 2013 at 02:04:52PM -0700, Bob Smith wrote:
> Greg Kroah-Hartman wrote:
> >>cat /dev/proxyctrl # what is the offset?
> >>echo 2 > /dev/proxyctrl # set offset to 2
> >
> >You have language bindings right there in bash for this api, what you
> >are saying is that you don't
On Wed, Aug 07, 2013 at 11:08:42PM +0200, Ben Hutchings wrote:
> On Wed, 2013-08-07 at 13:53 -0700, Kent Overstreet wrote:
> > On Wed, Aug 07, 2013 at 10:28:18PM +0200, Ben Hutchings wrote:
> > > As Kent said back in 2011 (commit 84759c6d18c5), bcache needs
> > > {down,up}_read_non_owner(). But
Greg Kroah-Hartman wrote:
> You ignored my mknod comment.
Yes, proxy is a type of IPC. It's closest counterpart in the
kernel now is a named pipe. The kernel does not try to create
named pipes automatically. Named pipes are created deliberately
by users with the mkfifo command or system call.
On Wed, 7 Aug 2013 14:18:35 -0700 Andrew Morton
wrote:
> On Wed, 7 Aug 2013 17:12:36 -0400 Ed Cashin wrote:
>
> >
> > On Aug 7, 2013, at 4:58 PM, Andrew Morton wrote:
> >
> > > On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
> > >
> > >> As discussed previously,
> > >
> > > I think I
On Wed, 7 Aug 2013 17:21:32 -0400 Ed Cashin wrote:
> > What are the end-user-visible effects of the problem which is being
> > fixed? Please always include this info when fixing bugs so that others
> > can work out what kernel version(s) need the patch.
>
>
> Sorry. I tried to cover that but
From: Jiri Olsa
Adding test to validate perf_event_attr data for command:
'record -e '{cycles,cache-misses}:S'
Signed-off-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link:
] 3.11.0-rc4-next-20130807-dirty #2 Not tainted
[4.423339] ---
[4.429931] getty/767 is trying to acquire lock:
[4.434783] (>termios_rwsem){..}, at: []
n_tty_read+0x3ec/0x958
[4.442871]
[4.442871] but task is already hold
From: David Ahern
On Fedora 18, with gcc 4.6.4 compile fails with:
arch/x86/util/tsc.c: In function ‘perf_time_to_tsc’:
arch/x86/util/tsc.c:13:6: error: declaration of ‘time’ shadows a global
declaration [-Werror=shadow]
cc1: all warnings being treated as errors
make: ***
From: Jiri Olsa
Adding 2 more tests to the automated parse events suite for following
event config:
'{cycles,cache-misses,branch-misses}:S'
'{instructions,branch-misses}:Su'
Signed-off-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc:
From: David Ahern
For use with kvm-live mode.
Signed-off-by: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Runzhen Wang
Cc: Xiao Guangrong
Link:
http://lkml.kernel.org/r/1375473947-64285-2-git-send-email-dsah...@gmail.com
On Wed, Aug 7, 2013 at 12:52 AM, Maarten Lankhorst
wrote:
> Op 07-08-13 02:26, Andy Lutomirski schreef:
>> On Tue, Aug 6, 2013 at 5:24 PM, Tom Gundersen wrote:
>>> On 6 Aug 2013 18:32, "Bryan Kadzban" wrote:
On Tue, Aug 06, 2013 at 11:17:17AM +0200, Tom Gundersen wrote:
> On Tue, Aug
From: David Ahern
Taking a lesson from perf-trace and bringing in control of event
processing to perf-kvm-stat-live: parse the sample to get access the
time leaving just the need to queue it to the ordered samples list. For
that the queue_event function needs to be exported.
Unexport
From: Jiri Olsa
For sample with sample type PERF_SAMPLE_READ the period value is stored
in the 'struct sample_read'.
Moreover if the read format has PERF_FORMAT_GROUP, the 'struct
sample_read' contains period values for all events in the group (for
which the sample's event is a leader).
We
From: David Ahern
Symbol offset is one of the fields that can be requested in perf-script.
Currently you do not get that data when requested. e.g.,
perf script -f comm,tid,pid,time,cpu,sym,symoff,ip
...
gcc 6201/6201 [006] 762250.617897:
81090d95 update_curr
810911b8
On Wed, Aug 07, 2013 at 02:10:28PM -0700, Andrew Fish wrote:
> Well the issue I see is I don't think OS X or Windows are doing this.
> So I'm guessing there is some unique thing beings done on the Linux
> side and we don't have good tests to catch bugs in the EFI
> implementations. If the
From: Arnaldo Carvalho de Melo
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Thiago Peixoto
Link: http://lkml.kernel.org/n/tip-jurgz6myq125o1ql6lldh...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
---
From: David Ahern
Allows kvm live mode to reuse the event processing and ordered samples
processing used by the perf-report path.
v2: removed flush_sample_queue as noticed by Jiri
Signed-off-by: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter
From: David Ahern
Need an initialization function to set min to -1 to
differentiate from an actual min of 0.
Signed-off-by: David Ahern
Reviewed-by: Xiao Guangrong
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Runzhen Wang
Cc: Xiao
From: Jiri Olsa
This will be helpful for PERF_FORMAT_GROUP samples where we need to
store ID related period value for each event.
Signed-off-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Corey Ashford
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link:
From: Jiri Olsa
We need to fail the event ID retrieval in case both following conditions
are true:
- we are on kernel with no PERF_EVENT_IOC_ID support
- PERF_FORMAT_GROUP read format is set
The PERF_FORMAT_GROUP read format bit is the killer for retrieving event
ID out of the read
From: Andi Kleen
Minor cleanup.
The dummy execve to pre-resolve the PLT is obsolete since
"enable_on_execve" was added. The counters are only
running after the execve anyways. So just remove it.
Signed-off-by: Andi Kleen
Reviewed-by: Jiri Olsa
Cc: Jiri Olsa
Cc: Stephane Eranian
Link:
From: Arnaldo Carvalho de Melo
It is an errno, so print an error string.
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-zt68gijvvoe8gd7kmclo4...@git.kernel.org
Signed-off-by: Arnaldo
From: Ingo Molnar
Signed-off-by: Ingo Molnar
Link: http://lkml.kernel.org/r/20130802111050.ga29...@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/ui/browsers/annotate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/ui/browsers/annotate.c
On Aug 7, 2013, at 5:00 PM, Andrew Morton wrote:
> On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
>
>> As discussed previously, the fact that some users of the block
>> layer provide bios that point to pages with a zero _count means
>> that it is not OK for the network layer to do a
From: Michael Ellerman
Add a negative test to test__checkevent_pmu_events() to get lots of
coverage of the negative case, ie. when the modifier is not specified.
Add a test of a single event, and of the group case.
Signed-off-by: Michael Ellerman
Acked-by: Jiri Olsa
Acked-by: Namhyung Kim
From: Andi Kleen
When interval mode is outputting to a pipe, each measurement should be
flushed individually, so that the reader sees it timely.
With a terminal each line is automatically flushed by stdio, but that is
disabled with non terminal output.
Simply fflush output after each time
From: Jiri Olsa
Adding 'S' event/group modifier to specify that the event value/s are
read by PERF_SAMPLE_READ sample type processing, instead of the period
value offered by lower layers.
There's additional behaviour change for 'S' modifier being specified on
event group:
Currently all the
From: Adrian Hunter
Currently the symbol name is displayed at the top when displaying symbol
annotation. Add to this the dso long name.
Suggested-by: Arnaldo Carvalho de Melo
Signed-off-by: Adrian Hunter
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Mike
From: Adrian Hunter
Annotation with /proc/kcore is possible so the logic is adjusted to
allow it. The main difference is that /proc/kcore had no symbols so the
parsing logic needed a tweak to read jump offsets.
The other difference is that objdump cannot always read from kcore.
That seems to
From: Andi Kleen
When measuring workloads the startup phase -- doing page faults, dynamic
linking, opening files -- is often very different from the rest of the
workload. Especially with smaller kernels and using counter
multiplexing this can give significant measurement errors.
Multiplexing
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From: Adrian Hunter
Make the "object code reading" test attempt to read from kcore.
The test uses objdump which struggles with kcore. i.e. doesn't always
work, sometimes takes a long time. The test has been made to work
around those issues.
Signed-off-by: Adrian Hunter
Cc: David Ahern
Cc:
From: Andi Kleen
Add support for enabling already set up counters by using an
ioctl. I share some code with the filter setup.
Signed-off-by: Andi Kleen
Reviewed-by: Jiri Olsa
Cc: Jiri Olsa
Cc: Stephane Eranian
Link:
On Wed, 7 Aug 2013 17:12:36 -0400 Ed Cashin wrote:
>
> On Aug 7, 2013, at 4:58 PM, Andrew Morton wrote:
>
> > On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
> >
> >> As discussed previously,
> >
> > I think I missed that.
> >
> >> the fact that some users of the block
> >> layer
From: Jiri Olsa
It's possible some of the counters in the group could be
disabled when sampling member of the event group is reading
the rest via PERF_SAMPLE_READ sample type processing. Disabled
counters could then produce wrong numbers.
Fixing that by reading only enabled counters for
From: Adrian Hunter
When removing duplicate symbols, prefer to remove syscall aliases
starting with SyS or compat_SyS.
A side-effect of that is that it results in slightly improved results
for the "vmlinux symtab matches kallsyms" test.
Signed-off-by: Adrian Hunter
Cc: David Ahern
Cc:
On 08/07/2013 02:12 PM, Alessandro Rubini wrote:
>
> Would it make sense to work on devicetree support in x86 bootloaders
> (especially yours, let's ignore grub)?
>
No, it's already there. ;)
-hpa
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From: Michael Ellerman
This commit adds support for a new modifier "D", which requests that the
event, or group of events, be pinned to the PMU.
The "p" modifier is already taken for precise, and "P" may be used in
future to mean "fully precise".
So we use "D", which stands for pinneD - and
From: Adrian Hunter
In order to use kernel maps to read object code, those maps must be
adjusted to map to the dso file offset. Because lazy-initialization is
used, that is not done until symbols are loaded. However the maps are
first used by thread__find_addr_map() before symbols are loaded.
From: Joonsoo Kim
This reverts commit 079787f209416416383c74ea5d5044be2d586f5e.
Below commit already resolve a cross build problem.
I have been noticed this too lately.
commit 3c4797d46c14fa0c7cf733a77bd4b28875078b53
Author: Rabin Vincent
Date: Fri May 17 22:27:44 2013 +0200
From: Adrian Hunter
Using the information in mmap events, perf tools can read object code
associated with sampled addresses. A test is added that compares bytes
read by perf with the same bytes read using objdump.
Signed-off-by: Adrian Hunter
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo
From: Arnaldo Carvalho de Melo
The previous description: "Search previous string" is usually associated
with the 'N' following a '/string', the opposite of 'n', which is
'Search next string' in the direction established with '/' or '?'.
So change it to 'Search string backwards', to clarify
From: Jason Wessel
For some types of work loads and special guest environments, you might
have a kernel that has no kernel modules. The perf kvm record tool
fails instantiate vmlinux maps when the kernel modules directory cannot
be opened, even though the kallsyms has been properly processed.
From: Adrian Hunter
The vmlinux maps now map to the dso and the symbol values are now file
offsets. For comparison with kallsyms the virtual memory address is
needed which is obtained by unmapping the symbol value.
The "vmlinux symtab matches kallsyms" is adjusted accordingly.
Signed-off-by:
From: Adrian Hunter
The kallsyms maps now may map to kcore and the symbol values now may be
file offsets. For comparison with vmlinux the virtual memory address is
needed which is obtained by unmapping the symbol value.
The "vmlinux symtab matches kallsyms" is adjusted accordingly.
From: David Ahern
Add an option to analyze a specific VM within a data file. This allows
the collection of kvm events for all VMs and then analyze data for each
VM (or set of VMs) individually.
Signed-off-by: David Ahern
Reviewed-by: Xiao Guangrong
Cc: Frederic Weisbecker
Cc: Ingo Molnar
From: Jiri Olsa
Adding support to parse out the PERF_SAMPLE_READ sample bits. The code
contains both single and group format specification.
This code parse out and prepare PERF_SAMPLE_READ data into the
perf_sample struct. It will be used for group leader sampling feature
comming in shortly.
From: Adrian Hunter
The new "object code reading" test shows that it is not possible to read
object code from vmlinux. That is because the mappings do not map to
the dso. This patch fixes that.
A side-effect of changing the kernel map is that the "reloc" offset must
be taken into account. As
From: David Ahern
Needed by kvm live command. Make record_args a local while we are
messing with the args.
Signed-off-by: David Ahern
Reviewed-by: Xiao Guangrong
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Runzhen Wang
Cc: Xiao Guangrong
From: David Ahern
perf kvm stat currently requires back to back record and report commands
to see stats. e.g,.
perf kvm stat record -p $pid -- sleep 1
perf kvm stat report
This is inconvenvient for on box monitoring of a VM. This patch
introduces a 'live' mode that in effect combines the
From: Adrian Hunter
When kcore is used for annotation, symbols do not have correct sizes
because they come from kallsyms, that has only its start address, with
the end address being the next symbol's minus one.
That sometimes results in an extra nop being seen after the end of a
function.
From: Arnaldo Carvalho de Melo
Hi Ingo,
Please consider pulling,
- Arnaldo
The following changes since commit 93786a5f6aeb9c032c1c240246c5aabcf457b38f:
watchdog: Make it work under full dynticks (2013-07-30 22:29:15 +0200)
are available in the git repository at:
From: Adrian Hunter
The /proc/kcore file has no symbols, so the call target name does not
display. Fix by looking up the symbol name if it is on the same map.
Reported-by: Arnaldo Carvalho de Melo
Signed-off-by: Adrian Hunter
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc:
From: Adrian Hunter
The new "object code reading" test shows that it is not possible to read
object code from kernel modules. That is because the mappings do not
map to the dsos. This patch fixes that.
This involves identifying and flagging relocatable (ELF type ET_REL)
files (e.g. kernel
[stripped list of issues from my original message follows]
>> Some of the problems he found are:
>>
>> * Passing a dtb to the kernel: we use a modified kexec at present
>> * Passing correct irq numbers to the AMBA drivers
>> * Switching to a new gpio driver with devicetree support
From: Namhyung Kim
The commit 2b8bfa6bb8a7 ("perf tools: Centralize default columns init in
perf_hpp__init") moves initialization of common overhead column to
perf_hpp__init() but forgot about the gtk code.
So the gtk code added the same column to the list twice causing infinite
loop when
On Wed, Aug 07, 2013 at 01:53:57PM -0700, Kent Overstreet wrote:
> On Wed, Aug 07, 2013 at 10:28:18PM +0200, Ben Hutchings wrote:
> > As Kent said back in 2011 (commit 84759c6d18c5), bcache needs
> > {down,up}_read_non_owner(). But these are not implemented by the -rt
> > patchset when
On Aug 7, 2013, at 4:58 PM, Andrew Morton wrote:
> On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
>
>> As discussed previously,
>
> I think I missed that.
>
>> the fact that some users of the block
>> layer provide bios that point to pages with a zero _count means
>> that it is not OK
From: David Ahern
Add max and min times for exit events.
v2: address Xiao's comment to use get_event function for pulling max and
min from stats struct similar to mean and count
Signed-off-by: David Ahern
Reviewed-by: Xiao Guangrong
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Jiri Olsa
From: Adrian Hunter
In the absence of vmlinux, perf tools uses kallsyms for symbols. If the
user has access, now also map to /proc/kcore.
The dso data_type is now set to either DSO_BINARY_TYPE__KCORE or
DSO_BINARY_TYPE__GUEST_KCORE as approprite.
This patch breaks the "vmlinux symtab matches
From: Namhyung Kim
The parse_nsec_time() function is for parsing a string of time into
64-bit nsec value. It's a preparation of time filtering in some of perf
commands.
Signed-off-by: Namhyung Kim
Tested-by: David Ahern
Acked-by: David Ahern
Cc: Andi Kleen
Cc: David Ahern
Cc: Ingo Molnar
From: Jiri Olsa
Changing the way we retrieve the event ID. Instead of parsing out
the ID out of the read data, using the PERF_EVENT_IOC_ID ioctl.
Keeping the old way in place to support kernels without
PERF_EVENT_IOC_ID ioctl support.
This will be useful for retrieving the event ID for events
From: Jiri Olsa
The only way to get the event ID is by reading the event fd,
followed by parsing the ID value out of the returned data.
While this is ok for current read format used by perf tool,
it is not ok when we use PERF_FORMAT_GROUP format.
With this format the data are returned for the
On Wed, 2013-08-07 at 22:01 +0100, Nix wrote:
> On 7 Aug 2013, Trond Myklebust said:
>
> > On Wed, 2013-08-07 at 11:18 +0100, Nix wrote:
> >> On 6 Aug 2013, Trond Myklebust verbalised:
> >> > True. How about something like the following instead. Note the change to
> >> > the original patch...
>
On Aug 7, 2013, at 1:19 PM, Matt Fleming wrote:
> [ Readding Matthew Garrett to the Cc list, seeing as we both got removed
> for some unknown reason ]
>
> On Wed, 07 Aug, at 10:23:56AM, Andrew Fish wrote:
>
>> OK so I think I need some Cliff Notes here to help me understand what
>> is going
On Wed, 2013-08-07 at 13:53 -0700, Kent Overstreet wrote:
> On Wed, Aug 07, 2013 at 10:28:18PM +0200, Ben Hutchings wrote:
> > As Kent said back in 2011 (commit 84759c6d18c5), bcache needs
> > {down,up}_read_non_owner(). But these are not implemented by the -rt
> > patchset when PREEMPT_RT_FULL
On 08/07, David Brown wrote:
> On Wed, Aug 07, 2013 at 08:34:39AM +0200, Krzysztof Kozlowski wrote:
> >Fix compilation error in gpiomux (CONFIG_MSM_GPIOMUX=y):
> >arch/arm/mach-msm/gpiomux.c:24:13: error: static declaration of
> > ???__msm_gpiomux_write??? follows non-static declaration
>
On Wed, 2013-08-07 at 20:45 +0200, Jan Kara wrote:
> On Wed 07-08-13 11:08:43, Davidlohr Bueso wrote:
> > Hi Jan,
> >
> > On Wed, 2013-08-07 at 17:20 +0200, Jan Kara wrote:
> > > On Thu 01-08-13 20:58:46, Davidlohr Bueso wrote:
> > > > On Thu, 2013-08-01 at 22:33 +0200, Jan Kara wrote:
> > > > >
Greg Kroah-Hartman wrote:
cat /dev/proxyctrl # what is the offset?
echo 2 > /dev/proxyctrl # set offset to 2
You have language bindings right there in bash for this api, what you
are saying is that you don't want to write new syscall bindings for new
languages, which is
On 7 Aug 2013, Trond Myklebust said:
> On Wed, 2013-08-07 at 11:18 +0100, Nix wrote:
>> On 6 Aug 2013, Trond Myklebust verbalised:
>> > True. How about something like the following instead. Note the change to
>> > the original patch...
>>
>> Well, with those applied I could reboot without a
On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
> As discussed previously, the fact that some users of the block
> layer provide bios that point to pages with a zero _count means
> that it is not OK for the network layer to do a put_page on the
> skb frags during an skb_linearize, so the aoe
The following changes since commit 3b2f64d00c46e1e4e9bd0bb9bb12619adac27a4b:
Linux 3.11-rc2 (2013-07-21 12:05:29 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git
for-3.12/msm-cleanup2
for you to fetch changes up to
On Thu, 1 Aug 2013 21:29:59 -0400 Ed Cashin wrote:
> As discussed previously,
I think I missed that.
> the fact that some users of the block
> layer provide bios that point to pages with a zero _count means
> that it is not OK for the network layer to do a put_page on the
> skb frags during an
This change makes lru_add_drain_all() only selectively interrupt
the cpus that have per-cpu free pages that can be drained.
This is important in nohz mode where calling mlockall(), for
example, otherwise will interrupt every core unnecessarily.
Signed-off-by: Chris Metcalf
---
v3: split commit
This primitive allows scheduling work to run on a particular set of
cpus described by a "struct cpumask". This can be useful, for example,
if you have a per-cpu variable that requires code execution only if the
per-cpu variable has a certain value (for example, is a non-empty list).
On Wed, Aug 07, 2013 at 10:28:18PM +0200, Ben Hutchings wrote:
> As Kent said back in 2011 (commit 84759c6d18c5), bcache needs
> {down,up}_read_non_owner(). But these are not implemented by the -rt
> patchset when PREEMPT_RT_FULL is enabled. Can they be added, or is
> there a fundamental
On Wed, Aug 07, 2013 at 04:22:01PM -0400, Tejun Heo wrote:
> Hello, Kent.
>
> On Wed, Aug 07, 2013 at 10:34:58AM -0700, Kent Overstreet wrote:
> > + * So for 1 mb of memory (and allocating more than that should be fine with
> > + * CONFIG_COMPACTION) you get slightly under 8 million IDs.
>
>
On Wed, Aug 7, 2013 at 1:19 PM, Jason Baron wrote:
>
> The whole point of the thread started with wanting to move the default
> 'disabled' branch further out-of-line.
Yeah, but I always disagreed with that.
Putting the unusual code out-of-line (as in "at the end of the
function") is a good
On Tue, Aug 06, 2013 at 04:22:39PM -0400, Chris Metcalf wrote:
> This change makes lru_add_drain_all() only selectively interrupt
> the cpus that have per-cpu free pages that can be drained.
>
> This is important in nohz mode where calling mlockall(), for
> example, otherwise will interrupt every
> Maybe you could add a commit message?
Ack (Davide is holidays, I grant that for him).
> Apart from that it looks like a straight-forward plug-in to the
> Nomadik pin controller, so I'd happily apply it, but I guess it
> will go in through the x86 tree?
It's part of a bigger series, that adds
First, in huge_pte_offset(), we were erroneously checking
pgd_present(), which is always true, rather than pud_present(),
which is the thing that tells us if there is a top-level (L0) PTE.
Fixing this means we properly look up huge page entries only when
the Present bit is actually set in the PTE.
This change creates the framework for vDSO calls, makes the existing
rt_sigreturn() mechanism use it, and adds a fast gettimeofday().
Now that we need to expose the vDSO address to userspace, we add
AT_SYSINFO_EHDR to the set of aux entries provided to userspace.
(You can disable any extra vDSO
It's much easier to read register dumps if you read vertically
rather than horizontally, since the register numbers line up
and lead the eye down more than to the right.
Signed-off-by: Chris Metcalf
---
arch/tile/kernel/process.c | 20 ++--
1 file changed, 10 insertions(+), 10
This change adds infrastructure (CONFIG_TILE_HVGLUE_TRACE) that
provides C code wrappers for the calls the kernel makes to the Tilera
hypervisor. This allows standard kernel infrastructure like FTRACE to
be able to instrument hypervisor calls.
To allow direct calls to the true API, we export
This change adds TILE-Gx SIMD instructions to the software raid
(md), modeling the Altivec implementation. This is only for Syndrome
generation; there is more that could be done to improve recovery,
as in the recent Intel SSE3 recovery implementation.
The code unrolls 8 times; this turns out to
First, fix a bug in asm/unaligned.h; we need to just use the asm-generic
unaligned.h so we properly choose endian-correct flavors.
Second, keep the hv/hypervisor.h ABI fully "native" in the sense that
we don't have __BIG_ENDIAN__ ifdefs there. Instead, we use macros in
the head_NN.S assembly
If ioreamp_prot() fails in ioremap_page_range() due to kernel memory
exhaustion, we previously would leak a struct vm_struct.
Signed-off-by: Chris Metcalf
---
arch/tile/mm/pgtable.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/tile/mm/pgtable.c
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