Historically, !__GFP_FS allocations were not allowed to invoke the OOM
killer once reclaim had failed, but nevertheless kept looping in the
allocator.
Commit 9879de7373 ("mm: page_alloc: embed OOM killing naturally into
allocation slowpath"), which should have been a simple cleanup patch,
accidentally changed the behavior to aborting the allocation at that
point. This creates problems with filesystem callers (?) that currently
rely on the allocator waiting for other tasks to intervene.
Revert the behavior as it shouldn't have been changed as part of a
cleanup patch.
Fixes: 9879de7373 ("mm: page_alloc: embed OOM killing naturally into allocation slowpath")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Dave Chinner <david@fromorbit.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: <stable@vger.kernel.org> [3.19.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There's a uname workaround for broken userspace which can't handle kernel
versions of 3.x. Update it for 4.x.
Signed-off-by: Jon DeVree <nuxi@vault24.org>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The memcg control knobs indicate the highest possible value using the
symbolic name "infinity", which is long and awkward to type.
Switch to the string "max", which is just as descriptive but shorter and
sweeter.
This changes a user interface, so do it before the release and before
the development flag is dropped from the default hierarchy.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
max_used_pages is defined as atomic_long_t so we need to use unsigned
long to keep temporary value for it rather than int which is smaller
than unsigned long in a 64 bit system.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix a conditional statement checking for NULL in both
ds1685_rtc_sysfs_time_regs_show and ds1685_rtc_sysfs_time_regs_store
that was using a logical AND when it should be using a logical OR so
that we fail out of the function properly if the condition ever
evaluates to true.
Fixes: aaaf5fbf56 ("rtc: add driver for DS1685 family of real time clocks")
Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Each inode of nilfs2 stores a root node of a b-tree, and it turned out to
have a memory overrun issue:
Each b-tree node of nilfs2 stores a set of key-value pairs and the number
of them (in "bn_nchildren" member of nilfs_btree_node struct), as well as
a few other "bn_*" members.
Since the value of "bn_nchildren" is used for operations on the key-values
within the b-tree node, it can cause memory access overrun if a large
number is incorrectly set to "bn_nchildren".
For instance, nilfs_btree_node_lookup() function determines the range of
binary search with it, and too large "bn_nchildren" leads
nilfs_btree_node_get_key() in that function to overrun.
As for intermediate b-tree nodes, this is prevented by a sanity check
performed when each node is read from a drive, however, no sanity check
has been done for root nodes stored in inodes.
This patch fixes the issue by adding missing sanity check against b-tree
root nodes so that it's called when on-memory inodes are read from ifile,
inode metadata file.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This got lost during the initial merge process: Python requires an
__init__.py script, even if empty, in order to accept a directory as
package. Add it, this time as a non-empty file.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/rtc/rtc-ds1685.c: In function `ds1685_rtc_read_alarm':
drivers/rtc/rtc-ds1685.c:402: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:409: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:416: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c: In function `ds1685_rtc_set_alarm':
drivers/rtc/rtc-ds1685.c:475: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:478: warning: comparison is always true due to limited range of data type
drivers/rtc/rtc-ds1685.c:481: warning: comparison is always true due to limited range of data type
u8 cannot contain a value larger than 0xff, hence drop the checks.
Wrapping the checks in unlikely() indicated some sense of humor, though ;-)
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Joshua Kinard <kumba@gentoo.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The newly added ds1685 driver causes a build error when enabled without
CONFIG_RTC_INTF_DEV:
drivers/rtc/rtc-ds1685.c:919:22: error: 'ds1685_rtc_alarm_irq_enable' undeclared here (not in a function)
.alarm_irq_enable = ds1685_rtc_alarm_irq_enable,
Apparently the driver was incorrectly changed to reflect the interface
change from 16380c153a ("RTC: Convert rtc drivers to use the
alarm_irq_enable method"), which removed the respective #ifdef from all
other rtc drivers.
This does the same change that was merged for the other drivers before and
removes the #ifdef, allowing the interrupts to be enabled through the
in-kernel rtc interface independent of the existence of /dev/rtc.
Fixes: aaaf5fbf56 ("rtc: add driver for DS1685 family of real time clocks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Joshua Kinard <kumba@gentoo.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A memcg is considered low limited even when the current usage is equal to
the low limit. This leads to interesting side effects e.g.
groups/hierarchies with no memory accounted are considered protected and
so the reclaim will emit MEMCG_LOW event when encountering them.
Another and much bigger issue was reported by Joonsoo Kim. He has hit a
NULL ptr dereference with the legacy cgroup API which even doesn't have
low limit exposed. The limit is 0 by default but the initial check fails
for memcg with 0 consumption and parent_mem_cgroup() would return NULL if
use_hierarchy is 0 and so page_counter_read would try to dereference NULL.
I suppose that the current implementation is just an overlook because the
documentation in Documentation/cgroups/unified-hierarchy.txt says:
"The memory.low boundary on the other hand is a top-down allocated
reserve. A cgroup enjoys reclaim protection when it and all its
ancestors are below their low boundaries"
Fix the usage and the low limit comparision in mem_cgroup_low accordingly.
Fixes: 241994ed86 (mm: memcontrol: default hierarchy interface for memory)
Reported-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Maxime reported the following memory leak regression due to commit
dbc8358c72 ("mm/nommu: use alloc_pages_exact() rather than its own
implementation").
On v3.19, I am facing a memory leak. Each time I run a command one page
is lost. Here an example with busybox's free command:
/ # free
total used free shared buffers cached
Mem: 7928 1972 5956 0 0 492
-/+ buffers/cache: 1480 6448
/ # free
total used free shared buffers cached
Mem: 7928 1976 5952 0 0 492
-/+ buffers/cache: 1484 6444
/ # free
total used free shared buffers cached
Mem: 7928 1980 5948 0 0 492
-/+ buffers/cache: 1488 6440
/ # free
total used free shared buffers cached
Mem: 7928 1984 5944 0 0 492
-/+ buffers/cache: 1492 6436
/ # free
total used free shared buffers cached
Mem: 7928 1988 5940 0 0 492
-/+ buffers/cache: 1496 6432
At some point, the system fails to sastisfy 256KB allocations:
free: page allocation failure: order:6, mode:0xd0
CPU: 0 PID: 67 Comm: free Not tainted 3.19.0-05389-gacf2cf1-dirty #64
Hardware name: STM32 (Device Tree Support)
show_stack+0xb/0xc
warn_alloc_failed+0x97/0xbc
__alloc_pages_nodemask+0x295/0x35c
__get_free_pages+0xb/0x24
alloc_pages_exact+0x19/0x24
do_mmap_pgoff+0x423/0x658
vm_mmap_pgoff+0x3f/0x4e
load_flat_file+0x20d/0x4f8
load_flat_binary+0x3f/0x26c
search_binary_handler+0x51/0xe4
do_execveat_common+0x271/0x35c
do_execve+0x19/0x1c
ret_fast_syscall+0x1/0x4a
Mem-info:
Normal per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:0 isolated_file:0
unevictable:123 dirty:0 writeback:0 unstable:0
free:1515 slab_reclaimable:17 slab_unreclaimable:139
mapped:0 shmem:0 pagetables:0 bounce:0
free_cma:0
Normal free:6060kB min:352kB low:440kB high:528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:492kB isolated(anon):0ks
lowmem_reserve[]: 0 0
Normal: 23*4kB (U) 22*8kB (U) 24*16kB (U) 23*32kB (U) 23*64kB (U) 23*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 6060kB
123 total pagecache pages
2048 pages of RAM
1538 free pages
66 reserved pages
109 slab pages
-46 pages shared
0 pages swap cached
nommu: Allocation of length 221184 from process 67 (free) failed
Normal per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:0 isolated_file:0
unevictable:123 dirty:0 writeback:0 unstable:0
free:1515 slab_reclaimable:17 slab_unreclaimable:139
mapped:0 shmem:0 pagetables:0 bounce:0
free_cma:0
Normal free:6060kB min:352kB low:440kB high:528kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:492kB isolated(anon):0ks
lowmem_reserve[]: 0 0
Normal: 23*4kB (U) 22*8kB (U) 24*16kB (U) 23*32kB (U) 23*64kB (U) 23*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 6060kB
123 total pagecache pages
Unable to allocate RAM for process text/data, errno 12 SEGV
This problem happens because we allocate ordered page through
__get_free_pages() in do_mmap_private() in some cases and we try to free
individual pages rather than ordered page in free_page_series(). In
this case, freeing pages whose refcount is not 0 won't be freed to the
page allocator so memory leak happens.
To fix the problem, this patch changes __get_free_pages() to
alloc_pages_exact() since alloc_pages_exact() returns
physically-contiguous pages but each pages are refcounted.
Fixes: dbc8358c72 ("mm/nommu: use alloc_pages_exact() rather than its own implementation").
Reported-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Tested-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <stable@vger.kernel.org> [3.19]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We (the Ocfs2 project) recently moved the location of our ocfs2-tools
git tree and project web page. The pertinent discussion can be seen
here:
https://oss.oracle.com/pipermail/ocfs2-devel/2015-February/010579.html
The following patch updates the Ocfs2 documentation in MAINTAINERS,
ocfs2.txt, and dlmfs.txt. I added our new official web page, changed
the location of our tools git tree and removed the link to Joel's
ancient kernel git tree - Andrew has handled our patches for a while
now.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The smc91x driver traditionally gets configured at compile-time
for whichever hardware it runs on. This no longer works on
ARM as we continue to move to building all-in-one kernels.
Most ARM configurations with this driver already use run-time
configuration through DT or through platform_data, but a
few have not been converted yet.
I've checked all ARM boards that use this driver in their
legacy board files, and converted the ones that were using
compile-time configuration in smc91x.h to behave like the
other ones and provide the interrupt polarity along with
the MMIO configuration (width, stride) at platform device
creation time.
In particular, these combinations were previously selectable
in Kconfig but in fact broken:
- sa1100 assabet plus pleb
- msm combined with any other armv6/v7 platform
- pxa-idp combined with any non-DMA pxa variant
- LogicPD PXA270 combined with any other pxa
- nomadik combined with any other armv4/v5 platform,
e.g. versatile.
None of these seem critical enough to warrant a backport
to stable, but it would be nice to clean this up for good.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
----
I would like the patch to get merged through netdev, after
Robert and/or Linus have verified it on at least some hardware.
There are a few other non-ARM platforms using this driver,
I could do the same patch for those if we want to take
it further.
arch/arm/mach-msm/board-halibut.c | 8 ++++-
arch/arm/mach-msm/board-qsd8x50.c | 8 ++++-
arch/arm/mach-pxa/idp.c | 5 +++
arch/arm/mach-pxa/lpd270.c | 8 ++++-
arch/arm/mach-realview/core.c | 7 ++++
arch/arm/mach-realview/realview_eb.c | 2 +-
arch/arm/mach-sa1100/neponset.c | 6 ++++
arch/arm/mach-sa1100/pleb.c | 7 ++++
drivers/net/ethernet/smsc/smc91x.c | 9 +++--
drivers/net/ethernet/smsc/smc91x.h | 114 ++----------------------------------------------------------
10 files changed, 57 insertions(+), 117 deletions(-)
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
During the attach of this driver a couple commands are sent to the hardware
with usb_bulk_msg() to read the firmware version information. This information
is then dumped as dev_info() kernel messages. Thee messages are just added
noise and don't effect the operation of the driver.
For simplicity, remove the messages as well as the then unused functions
vmk80xx_read_eeprom() and vmk80xx_check_data_link().
This also fixes an issue reported by coverity about an out-of-bounds write
in vmk80xx_read_eeprom().
Reported-by: coverity (CID 711413)
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "stalled" variable this function is used to detect if the DMA operation
is stalled while trying to disable DMA on a full comedi sample. The reset
of this variable should only occur when the remaining bytes of the DMA
transfer does not equal the remaining bytes from the last check.
Reported-by: coverity (CID 1271132)
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These are fixes for patches in the recent merge window and are in a separate
branch to avoid rebasing the main fixes-togreg branch.
* jsa1212 - select missing REGMAP_I2C
* ssp_common - build warning fix for PM functions when PM not in use.
* ak8975 - the addition of a utility library for this driver (as part of
adding new device support) led to a dependency not being inforced
for the original driver (I2C and GPIOLIB).
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Merge tag 'iio-fixes-for-4.0b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second round of IIO fixes for the 4.0 cycle (or round one part two really!)
These are fixes for patches in the recent merge window and are in a separate
branch to avoid rebasing the main fixes-togreg branch.
* jsa1212 - select missing REGMAP_I2C
* ssp_common - build warning fix for PM functions when PM not in use.
* ak8975 - the addition of a utility library for this driver (as part of
adding new device support) led to a dependency not being inforced
for the original driver (I2C and GPIOLIB).
set dependent on patches in the recent merge windows will follow shortly.
* dht11 - fix a read off the end of an array, add some locking to prevent
the read function being interrupted and make sure gpio/irq lines
are not enabled for irqs during output.
* iadc - timeout should be in jiffies not msecs
* mpu6050 - avoid a null id from ACPI emumeration being dereferenced.
* mxs-lradc - fix up some interaction issues between the touchscreen driver
and iio driver. Mostly about making sure that the adc driver
only affects channels that are not being used for the
touchscreen.
* ad2s1200 - sign extension fix for a result of c type promotion.
* adis16400 - sign extension fix for a result of c type promotion.
* mcp3422 - scale table was transposed.
* ad5686 - use _optional regulator get to avoid a dummy reg being allocate
which would cause the driver to fail to initialize.
* gp2ap020a00f - select REGMAP_I2C
* si7020 - revert an incorrect cleanup up and then fix the issue that made
that cleanup seem like a good idea.
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Merge tag 'iio-fixes-for-4.0a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First round of fixes for IIO in the 4.0 cycle. Note a followup
set dependent on patches in the recent merge windows will follow shortly.
* dht11 - fix a read off the end of an array, add some locking to prevent
the read function being interrupted and make sure gpio/irq lines
are not enabled for irqs during output.
* iadc - timeout should be in jiffies not msecs
* mpu6050 - avoid a null id from ACPI emumeration being dereferenced.
* mxs-lradc - fix up some interaction issues between the touchscreen driver
and iio driver. Mostly about making sure that the adc driver
only affects channels that are not being used for the
touchscreen.
* ad2s1200 - sign extension fix for a result of c type promotion.
* adis16400 - sign extension fix for a result of c type promotion.
* mcp3422 - scale table was transposed.
* ad5686 - use _optional regulator get to avoid a dummy reg being allocate
which would cause the driver to fail to initialize.
* gp2ap020a00f - select REGMAP_I2C
* si7020 - revert an incorrect cleanup up and then fix the issue that made
that cleanup seem like a good idea.
ak8975 depends on I2C and GPIOLIB, so any symbols that selects
ak8975 must have the same dependency, or we get build errors:
drivers/iio/magnetometer/ak8975.c: In function 'ak8975_who_i_am':
drivers/iio/magnetometer/ak8975.c:393:2: error: implicit declaration of function 'i2c_smbus_read_i2c_block_data' [-Werror=implicit-function-declaration]
ret = i2c_smbus_read_i2c_block_data(client, AK09912_REG_WIA1,
^
drivers/iio/magnetometer/ak8975.c: In function 'ak8975_set_mode':
drivers/iio/magnetometer/ak8975.c:431:2: error: implicit declaration of function 'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration]
ret = i2c_smbus_write_byte_data(data->client,
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 57e73a423b ("iio: ak8975: add ak09911 and ak09912 support")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Commit:
1e02ce4ccc ("x86: Store a per-cpu shadow copy of CR4")
added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.
The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.
Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.
Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4ccc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
It is possible that _ART/_TRT tables are missing or have errors.
Ignore those failures, as INT3400 thermal zone is still required
for _OSC or mode switch.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Enable Intel Powerclamp driver on Atom* Processor C2000 Product
Family for Microservers (Avoton). Avoton - SoCs for micro-servers
has package C-states which can be used for idle injection.
Reported-by: Jose Navarro <jose.navarro@intel.com>
Suggested-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Tested-by: Jose Carlos Venegas Munoz <jos.c.venegas.munoz@intel.com>
Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
gcc complains about the 'cols' variable being unused. This is
unavoidable, given the ncurses getmaxyx() macro-based API, which wants
to assign to a variable directly, even when we're not going to use it.
Warning:
gcc -O1 -Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -fstack-protector -D VERSION=\"1.0\" -c -o tui.o tui.c
tui.c: In function ‘show_dialogue’:
tui.c:288:12: warning: variable ‘cols’ set but not used [-Wunused-but-set-variable]
int rows, cols;
^
So, add a hack to get rid of that warning.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Some distros (e.g., Arch Linux) don't package the tinfo library
separately from ncurses, so don't unconditionally include it. Instead,
use pkg-config.
The $(STATIC) ugliness is to handle the reported build case from commit
6b533269fb ("tools/thermal: tmon: fix compilation errors when building
statically"), where a developer wants to be able to build with:
make LDFLAGS=-static
which requires an additional pkg-config flag.
Finally, support a lowest common denominator fallback (-lpanel
-lncurses) for build systems that don't have pkg-config entries for
ncurses.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
We might want to prepare CFLAGS outside of this Makefile, so don't
overwrite its initial value.
Then, support $(CROSS_COMPILE), so we can use a cross-compile toolchain.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The number of rows in the dialog vary according to the number of cooling
devices. However, some of the windowing computations were assuming a
fixed number of rows. This computation is OK when we have between 4 and
9 cooling devices (and they wrap to the next column), but with fewer
devices, we end up printing off the end of the window.
This unifies the row computation into a single function and uses that
throughout the TUI code. This also accounts for increasing the number of
rows when there are more than 9 total cooling devices.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
We can use the ncurses API to get the number of rows.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
If we launch in daemon mode (--daemon), we don't have the ncurses UI,
but we might want to set the target temperature still. For example,
someone might stick the following in their boot script:
tmon --control intel_powerclamp --target-temp 90 --log --daemon
This would turn on CPU idle injection when we're around 90 degrees
celsius, and would log temperature and throttling info to
/var/tmp/tmon.log.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The arm-soc bug fixes this time around are mostly for the omap
platform, coming from a pull request from Tony Lindgren and are
almost entirely fixing dts files.
The other two changes enable support for the shmobile platform
in generic armv7 kernels and change some properties in the
ARM64 reference board dts files.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"The arm-soc bug fixes this time around are mostly for the omap
platform, coming from a pull request from Tony Lindgren and are almost
entirely fixing dts files.
The other two changes enable support for the shmobile platform in
generic armv7 kernels and change some properties in the ARM64
reference board dts files"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: multi_v7_defconfig: Enable shmobile platforms
arm64: Add L2 cache topology to ARM Ltd boards/models
ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
ARM: omap2plus_defconfig: Fix SATA boot
ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
ARM: dts: dra7: Correct the dma controller's property names
ARM: dts: omap5: Correct the dma controller's property names
ARM: dts: omap4: Correct the dma controller's property names
ARM: dts: omap3: Correct the dma controller's property names
ARM: dts: omap2: Correct the dma controller's property names
ARM: dts: am437x-idk: fix sleep pinctrl state
ARM: omap2plus_defconfig: enable TPS62362 regulator
ARM: dts: am437x-idk: fix TPS62362 i2c bus
ARM: dts: n900: Fix offset for smc91x ethernet
ARM: dts: n900: fix i2c bus numbering
ARM: dts: Fix USB dts configuration for dm816x
ARM: dts: OMAP5: Fix SATA PHY node
ARM: dts: DRA7: Fix SATA PHY node
- ftrace branch generation fix
- branch instruction encoding fix
- include files, guards and unused prototypes clean-up
- minor VDSO ABI fix (clock_getres)
- PSCI functions moved to .S to avoid compilation error with gcc 5
- pte_modify fix to not ignore the mapping type
- crypto: AES interleaved increased to 4x (for performance reasons)
- text patching fix for modules
- swiotlb increased back to 64MB
- copy_siginfo_to_user32() fix for big endian
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Various arm64 fixes:
- ftrace branch generation fix
- branch instruction encoding fix
- include files, guards and unused prototypes clean-up
- minor VDSO ABI fix (clock_getres)
- PSCI functions moved to .S to avoid compilation error with gcc 5
- pte_modify fix to not ignore the mapping type
- crypto: AES interleaved increased to 4x (for performance reasons)
- text patching fix for modules
- swiotlb increased back to 64MB
- copy_siginfo_to_user32() fix for big endian"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cpuidle: add asm/proc-fns.h inclusion
arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian
arm64: Increase the swiotlb buffer size 64MB
arm64: Fix text patching logic when using fixmap
arm64: crypto: increase AES interleave to 4x
arm64: enable PTE type bit in the mask for pte_modify
arm64: mm: remove unused functions and variable protoypes
arm64: psci: move psci firmware calls out of line
arm64: vdso: minor ABI fix for clock_getres
arm64: guard asm/assembler.h against multiple inclusions
arm64: insn: fix compare-and-branch encodings
arm64: ftrace: fix ftrace_modify_graph_caller for branch replace
In Linux 4.0-rc1 ARM Versatile PCI build fails to build due to what
appears to be an API update. This patch is a very simple correction,
merely posted as a heads-up to the maintainers. Hopefully a better
fix can be forwarded to Linus.
[ arnd: the patch actually looks correct, so let's take this version ]
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
If a hash table has 128 slots and 16384 elems, expand to 256 slots
takes more than one second. For larger sets, a soft lockup is detected.
Holding cpu for that long, even in a work queue is a show stopper
for non preemptable kernels.
cond_resched() at strategic points to allow process scheduler
to reschedule us.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-02-26
This series contains fixes for i40e and i40evf only.
Alexey Khoroshilov found a possible leak of 'cmd_buf' when copy_from_user()
failed in i40e_dbg_command_write(), so resolved by calling kfree().
Shannon provides a fix to ensure the shift and bitwise precedences do not
work backwards for us by adding parans. Fixed the driver by preventing
the driver from allowing stray interrupts or causing system logs from
un-handled interrupts by combining the ICR0 shutdown with the standard
interrupt shutdown and add the interrupt clearing to the PCI shutdown
path. Fixed an issue where a NVM write times out before a transaction
can complete, so Shannon added logic to make another attempt by
reacquiring the semaphore, then retry the write, if the one retry fails,
we will then give up. Adds checks to pointers before their use to ensure
we do not try to dereference NULL pointers when returning values from the
AdminQ calls.
Akeem adds a check to bail out if the device is already down when checking
for Tx hang subtask.
Anjali fixes TSO with more than 8 frags per segment issue. The hardware
has some limitations which the driver needs to adhere to:
1) no more than 8 descriptors per packet on the wire
2) no header can span more than 3 descriptors
If one of these events happens, the hardware will generate an internal
error and freeze the Tx queue, so Anjali fixes this by linearizes the skb
to avoid these situations. Fixed an issue where the per Traffic Class
queue count was higher than queues enabled, which will fix a warning
with multiple function mode where systems regularly have more cores than
vectors. Fixed TCP/IPv6 over VXLAN Tx checksum offload, where we were
checking the outer protocol flags and deciding the flow for the inner
header.
Jesse fixes a race condition in the transmit hang detection. Before we
were having issues of false Tx hang detection, no the driver makes more
direct with the checks for progress forward by directly checking the head
write back address and tail register when determining progress. This
avoids Tx hangs where the software gets behind, because we are directly
checking hardware state when determining a hang state.
Neerav fixes the transmit ring Qset handle when DCB reconfigures. The issue
was when DCB is reconfigured to a single traffic class (TC) and the driver
did not reset the Tx ring Qset handle to correct the mapping, which caused
the Tx queue to disable timeouts. Also as part of DCB reconfiguration flow
if the Tx queue disable times out, then issue a PF reset to do some level
of recovery.
Mitch stops flow director on shutdown because, in some cases, the hardware
would continue to try to access the FDIR ring after entering D3Hot state,
which would cause either PCIe errors or NMIs, depending upon the system
configuration.
* NOTE * I have verified that this series of patches for net will not cause
any merge issues when you sync up your net tree with your net-next tree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
It is possible that the hardware may not have been properly shutdown
before this driver gets control, through use by firmware, for example.
Until the driver is loaded, interrupts associated with the hardware
could go pending. When the IRQs are requested napi support has not
been initialized yet, but the ISR will get control and schedule napi
processing resulting in a kernel panic because the poll routine has not
been set.
Adjust the code so that the driver is fully ready to handle and process
interrupts as soon as the IRQs are requested. This involves requesting
and freeing IRQs during start and stop processing and ordering the napi
add and delete calls appropriately.
Also adjust the powerup and powerdown routines to match the start and
stop routines in regards to the ordering of tasks, including napi
related calls.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Just another AX88178-based 10/100/1000 USB-to-Ethernet dongle. This one
shows up in lsusb as: "Sitecom Europe B.V. LN-028 Network USB 2.0 Adapter".
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Francois Romieu <romieu@fr.zoreil.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
The share access mode is now specified as an argument in the nfs4_opendata,
and so nfs4_open_recover_helper() needs to call nfs4_map_atomic_open_share()
in order to set it.
Fixes: 6ae373394c ("NFSv4.1: Ask for no delegation on OPEN if using O_DIRECT")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Daniel Borkmann says:
====================
rhashtable updates
As discussed, I'm sending out rhashtable fixups for -net.
I have a couple of more patches I was working on last week pending,
i.e. to get rid of ht->nelems and ht->shift atomic operations which
speed-up pure insertions/deletions, e.g. on my laptop I have 2 threads,
inserting 7M entries each, that will reduce insertion time from ~1,450 ms
to 865 ms (performance should even be better after removing the
grow/shrink indirections). I guess that however is rather something
for net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, all real users of rhashtable default their grow and shrink
decision functions to rht_grow_above_75() and rht_shrink_below_30(),
so that there's currently no need to have this explicitly selectable.
It can/should be generic and private inside rhashtable until a real
use case pops up. Since we can make this private, we'll save us this
additional indirection layer and can improve insertion/deletion time
as well.
Reference: http://patchwork.ozlabs.org/patch/443040/
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
While commit c0c09bfdc4 ("rhashtable: avoid unnecessary wakeup for
worker queue") rightfully moved part of the decision making of
whether we should expand or shrink from the expand/shrink functions
themselves into insert/delete functions in order to avoid unnecessary
worker wake-ups, it however introduced a regression by doing so.
Before that change, if no max_shift was specified (= 0) on rhashtable
initialization, rhashtable_expand() would just grow unconditionally
and lets the available memory be the limiting factor. After that
change, if no max_shift was specified, there would be _no_ expansion
step at all.
Given that netlink and tipc have a max_shift specified, it was not
visible there, but Josh Hunt reported that if nft that starts out
with a default element hint of 3 if not otherwise provided, would
slow i.e. inserts down trememdously as it cannot grow larger to
relax table occupancy.
Given that the test case verifies shrinks/expands manually, we also
must remove pointer to the helper functions to explicitly avoid
parallel resizing on insertions/deletions. test_bucket_stats() and
test_rht_lookup() could also be wrapped around rhashtable mutex to
explicitly synchronize a walk from resizing, but I think that defeats
the actual test case which intended to have explicit test steps,
i.e. 1) inserts, 2) expands, 3) shrinks, 4) deletions, with object
verification after each stage.
Reported-by: Josh Hunt <johunt@akamai.com>
Fixes: c0c09bfdc4 ("rhashtable: avoid unnecessary wakeup for worker queue")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ying Xue <ying.xue@windriver.com>
Cc: Josh Hunt <johunt@akamai.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The 2 that we use for copy_to_iter comes from sizeof(u16),
it used to be that way before the iov iter update.
Fix it up, making it obvious the size of stack access
is right.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent iterator-related changes in vhost made it
harder to follow the logic fixing up the header.
In fact, the fixup always happens at the same
offset: sizeof(virtio_net_hdr): sometimes the
fixup iterator is updated by copy_to_iter,
sometimes-by iov_iter_advance.
Rearrange code to make this obvious.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
"val" is declared as a u64 so static checkers complain that this shift
can wrap. I don't have the hardware but probably it's doesn't have over
31 ports. Still we may as well silence the warning even if it's not a
real bug.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure kmalloc() succeeds.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
When doing reads and writes to adapter memory via the PCI-E Memory Window
interface, data gets swizzled on 4-byte boundaries on Big-Endian systems
because we need to account for the register read/write interface which
incorporates a swizzle onto the Little-Endian PCI-E Bus.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We should complete notify_check before returning the credits. Once we return the
credits, adaptor may access the notify data.
Signed-off-by: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This file provides a basic guide for how to handle conflict resolution
when it comes up in the development process.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Arjan van de Ven <arjanvandeven@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Chris Ball <chris@printf.net>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jes Sorensen <Jes.Sorensen@gmail.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Acked-by: Magnus Damm <damm@opensource.se>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: NeilBrown <neilb@suse.de>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Willy Tarreau <w@1wt.eu>
Acked-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
