03 Oct, 2009
2 commits
-
I was recently lucky enough to get a 64-CPU system. The processors
actually have T-states, so my kernel log ends up with 64 lines like:ACPI: Processor [CPU0] (supports xx throttling states)
This is pretty useless clutter because
- this info is already available after boot from
/proc/acpi/processor/CPUnn/throttling- there's also an ACPI_DEBUG_PRINT() in processor_throttling.c that
gives the same info on boot for anyone who *really* cares.So just delete the code that prints the throttling states in
processor_core.c.Signed-off-by: Roland Dreier
Signed-off-by: Andrew Morton
Signed-off-by: Len Brown -
The ACPI /proc write() code takes an unsigned length argument like any write()
function, but then assigned it to a *signed* integer called "len".
Only after this is a sanity check for len done to make it not larger than 4.Due to the type change a len < 0 is in principle also possible; this patch
adds a check for this.Signed-off-by: Arjan van de Ven
Signed-off-by: Len Brown
02 Oct, 2009
38 commits
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: fix data space leak fix
Btrfs: remove duplicates of filemap_ helpers
Btrfs: take i_mutex before generic_write_checks
Btrfs: fix arguments to btrfs_wait_on_page_writeback_range
Btrfs: fix deadlock with free space handling and user transactions
Btrfs: fix error cases for ioctl transactions
Btrfs: Use CONFIG_BTRFS_POSIX_ACL to enable ACL code
Btrfs: introduce missing kfree
Btrfs: Fix setting umask when POSIX ACLs are not enabled
Btrfs: proper -ENOSPC handling -
spi_imx_chipselect() made things that should be (and mostly are) done by
spi_imx_setupxfer. Only setting the tx and rx functions was missing.Signed-off-by: Uwe Kleine-König
Acked-by: Sascha Hauer
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Otherwise the config function uses random data from the stack. This
didn't stick out because config is called once more in the chipselect
function with correct parameters.Signed-off-by: Uwe Kleine-König
Acked-by: Sascha Hauer
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
spi_imx_setup() is only called by spi_setup(). The latter does the
initialization already.Signed-off-by: Uwe Kleine-König
Acked-by: Sascha Hauer
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Sascha Hauer
Signed-off-by: Uwe Kleine-König
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We can only setup the gpio pins in spi_setup time when we know the
SPI_CS_HIGH setting.Signed-off-by: Sascha Hauer
Signed-off-by: Uwe Kleine-König
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Sascha Hauer
Signed-off-by: Uwe Kleine-König
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This makes the filename match the Kconfig symbol and the driver name.
Signed-off-by: Uwe Kleine-König
Cc: Sascha Hauer
Cc: David Brownell
Cc: Guennadi Liakhovetski
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It's just a wrapper for , so remove it.
Signed-off-by: Christoph Hellwig
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When using %*s, sscanf should honor conversion specifiers immediately
following the %*s. For example, the following code should find the
position of the end of the string "hello".int end;
char buf[] = "hello world";
sscanf(buf, "%*s%n", &end);
printf("%d\n", end);Ideally, sscanf would advance the fmt and str pointers the same as it
would without the *, but the code for that is rather complicated and is
not included in the patch.Signed-off-by: Andy Spencer
Acked-by: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow users to force skipping the TXEN test at init time. Applies
to all serial ports. Intended for debugging only.There is a blacklist for devices where we need to skip the test but the
list is not complete. This lets users force skipping the test so we can
determine if they need to be added to the list.Some HP machines with weird serial consoles have this problem and there
may be more.Signed-off-by: Chuck Ebbert
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Check whether index is within bounds before grabbing the element.
Also, since NR_PORTS is defined ARRAY_SIZE(cy_port), cy_port[NR_PORTS] is
out of bounds as well.[akpm@linux-foundation.org: cleanup, remove (long) casts]
Signed-off-by: Roel Kluin
Cc: Alan Cox
Cc: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
irq is declared with size NR_CARDS (4), but the loop containing this
segment runs up until NR_ISA_ADDRS (16), possibly reading from irq[i] (and
trying to use the result)Identified by the Parfait static scanner.
Signed-off-by: Roel Kluin
Acked-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Convert spaces to tabs and remove wrong spaces
Signed-off-by: Breno Leitao
Cc: Scott Kilau
Cc: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Atsushi Nemoto
Cc: Ralf Baechle
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add better support for omitting either the card detect or the write
protect GPIOs if the board does not support it. Add the fields
no_wprotect and no_detect to the platform data which when set indicate the
absence of the respective GPIOs.Note, this also fixes a minor bug where it tries to free IRQ0 if there is
no detect gpio available.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We have found a couple of boards where the SDIO IRQ hardware support has
failed to work properly, and thus we should make it configurable whether
or not to be included in the driver.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fixes for the DMA transfer mode of the driver to try and improve the state
of the code:- Ensure that dma_complete is set during the end of the command phase
so that transfers do not stall awaiting the completion- Update the DMA debugging to provide a bit more useful information
such as how many DMA descriptors where not processed and print the
DMA addresses in hexadecimal.- Fix the DMA channel request code to actually request DMA for the
S3CMCI block instead of whatever '0' signified.- Add fallback to PIO if we cannot get the DMA channel, as many of the
devices with this block only have a limited number of DMA channels.- Only try and claim and free the DMA channel if we are trying to use it.
This improves the driver DMA code to the point where it can now identify a
card and read the partition table. However the DMA can still stall when
trying to move data between the host and memory.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a selection for the data transfer mode of the s3cmci driver, allowing
for either a configuration or rumtime selection of the use of the DMA or
PIO transfer code.The PIO only mode is 476 bytes smaller than the driver with both methods
compiled in.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The controller supports SDIO IRQ detection so add support for hardware
assisted SDIO interrupt detection for the SDIO core. This improves the
response time for SDIO interrupts and thus the transfer rate from devices
such as the Marvel 8686.As a note, it does seem that the controller will miss an IRQ than is held
asserted, so there are some manual checks to see if the SDIO interrupt is
active after a transfer.Major testing on the S3C2440.
Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Export driver state and hardware register state via debugfs entries
created under a directory formed from dev_name() on the probed device when
CONFIG_DEBUG_FS is set.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The clear_imask() call should be used to clear the interrupt mask
register, as it may end up clearing the SDIO interrupt bit if this is
enabled.Change all writes of zero to SDIIMSK register to use clear_imask() ready
for the SDIO updates.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move to using dev_pm_ops for suspend and resume.
Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move to using gpiolib to access the card detect and write protect GPIO
lines instead of using the platform speicifc s3c2410_gpio calls.Also ensure that the card lines are claimed the same way to avoid overlap
with any other drivers.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use the platform id list to match the three different versions of the
hardware block that this driver supports.This will change the prefix of the console messages produced by this
driver to be prefixed by s3c-mci instead of the hardware block name, such
as s3c2440-mci.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Replace the local definition RESSIZE() with the standard resource_size()
call for getting the size of a struct resource.Signed-off-by: Ben Dooks
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In charge/uncharge/reclaim path, usage_in_excess is calculated repeatedly
and it takes res_counter's spin_lock every time.This patch removes unnecessary calls for res_count_soft_limit_excess.
Reviewed-by: Daisuke Nishimura
Signed-off-by: KAMEZAWA Hiroyuki
Cc: Paul Menage
Cc: Li Zefan
Cc: Balbir Singh
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch clean up/fixes for memcg's uncharge soft limit path.
Problems:
Now, res_counter_charge()/uncharge() handles softlimit information at
charge/uncharge and softlimit-check is done when event counter per memcg
goes over limit. Now, event counter per memcg is updated only when
memory usage is over soft limit. Here, considering hierarchical memcg
management, ancesotors should be taken care of.Now, ancerstors(hierarchy) are handled in charge() but not in uncharge().
This is not good.Prolems:
1. memcg's event counter incremented only when softlimit hits. That's bad.
It makes event counter hard to be reused for other purpose.2. At uncharge, only the lowest level rescounter is handled. This is bug.
Because ancesotor's event counter is not incremented, children should
take care of them.3. res_counter_uncharge()'s 3rd argument is NULL in most case.
ops under res_counter->lock should be small. No "if" sentense is better.Fixes:
* Removed soft_limit_xx poitner and checks in charge and uncharge.
Do-check-only-when-necessary scheme works enough well without them.* make event-counter of memcg incremented at every charge/uncharge.
(per-cpu area will be accessed soon anyway)* All ancestors are checked at soft-limit-check. This is necessary because
ancesotor's event counter may never be modified. Then, they should be
checked at the same time.Reviewed-by: Daisuke Nishimura
Signed-off-by: KAMEZAWA Hiroyuki
Cc: Paul Menage
Cc: Li Zefan
Cc: Balbir Singh
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
__css_put() doesn't check a bug as refcnt goes to minus.
I think it should be caught. This patch adds a check for it.Signed-off-by: KAMEZAWA Hiroyuki
Cc: Paul Menage
Cc: Li Zefan
Cc: Balbir Singh
Cc: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
__mem_cgroup_largest_soft_limit_node() returns a mem_cgroup_per_zone "mz"
with incremnted mz->mem->css's refcnt. Then, the caller of this function
has to call css_put(mz->mem->css).But, mz can be !NULL even if "not found" i.e. without css_get(). By
this, css->refcnt will go down to minus.This may cause various things...one of results will be
initite-loop in css_tryget() as this.INFO: RCU detected CPU 0 stall (t=10000 jiffies)
sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU 0:<> [] trace_hardirqs_off+0xd/0x10
[] flat_send_IPI_mask+0x90/0xb0
[] flat_send_IPI_all+0x69/0x70
[] arch_trigger_all_cpu_backtrace+0x62/0xa0
[] __rcu_pending+0x7e/0x370
[] rcu_check_callbacks+0x47/0x130
[] update_process_times+0x46/0x70
[] tick_sched_timer+0x60/0x160
[] ? tick_sched_timer+0x0/0x160
[] __run_hrtimer+0xba/0x150
[] hrtimer_interrupt+0xd5/0x1b0
[] ? trace_hardirqs_off_thunk+0x3a/0x3c
[] smp_apic_timer_interrupt+0x6d/0x9b
[] apic_timer_interrupt+0x13/0x20
[] ? mem_cgroup_walk_tree+0x156/0x180
[] ? mem_cgroup_walk_tree+0x73/0x180
[] ? mem_cgroup_walk_tree+0x32/0x180
[] ? mem_cgroup_get_local_stat+0x0/0x110
[] ? mem_control_stat_show+0x14b/0x330
[] ? cgroup_seqfile_show+0x3d/0x60Above shows CPU0 caught in css_tryget()'s inifinite loop because
of bad refcnt.This is a fix to set mz=NULL at the top of retry path.
Signed-off-by: KAMEZAWA Hiroyuki
Acked-by: Paul Menage
Cc: Li Zefan
Cc: Balbir Singh
Cc: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some configurations of the Timberdale FPGA has the uartlite
included.Signed-off-by: Richard Röjfors
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch size comment is like so last millenium. Update it to modern
times.Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some manufacturers provide vendor information in non-vendor specific CIS
tuples. For example, Broadcom uses an Extended Function tuple to provide
the MAC address on some of their network cards, as in the case of the
Nintendo Wii WLAN daughter card.This patch allows passing whitelisted FUNCE tuples unknown to the SDIO
core to a matching SDIO driver instead of rejecting them and failing.Signed-off-by: Albert Herranz
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The page_address_in_vma() is not only used in unuse_vma().
Signed-off-by: Huang Shijie
Acked-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a
memory clobber, as it is only passed the address of the buffer, not a
memory reference to the buffer itself.This caused failures in Hurd's pfinetv4 when we tried to compile it with
gcc-4.3 (bogus checksums).Signed-off-by: Samuel Thibault
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Acked-by: "David S. Miller"
Cc: Andi Kleen
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix some build failures when using gcc-4.x for MN10300.
Firstly, __get_user() fails to build because the pointer points to a const and
__gu_val ends up being read-only:In file included from include/linux/mempolicy.h:62,
from init/main.c:50:
include/linux/pagemap.h: In function 'fault_in_pages_readable':
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
make[1]: *** [init/main.o] Error 1Secondly, gcc-4 doesn't allow casts of lvalues:
UPD include/linux/compile.h
arch/mn10300/kernel/rtc.c: In function 'calibrate_clock':
arch/mn10300/kernel/rtc.c:170: error: lvalue required as left operand of assignment
arch/mn10300/kernel/rtc.c:172: error: lvalue required as left operand of assignment
make[1]: *** [arch/mn10300/kernel/rtc.o] Error 1These are seen with gcc 4.2.1.
Signed-off-by: Mark Salter
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Joe Perches
Acked-by: Marek Vasut
Acked-by: Tomas Cech
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Stanse found (again) a BKL imbalance in vt_ioctl.
It's easily triggerable by ioctl(dev_tty_fd, VT_SETACTIVATE, NULL);
Introduced by
commit d3b5cffcf84a8bdc7073dce4745d67c72629af85 Author: Alan Cox
Date: Sat Sep 19 13:13:26 2009 -0700vt: add an activate and lock
Signed-off-by: Jiri Slaby
Cc: Alan Cox
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
