Jeremy Kerr [Mon, 18 Feb 2008 23:05:35 +0000 (10:05 +1100)]
[POWERPC] spufs: fix scheduler starvation by idle contexts
2.6.25 has a regression where we can starve the scheduler by creating
(N_SPES+1) contexts, then running them one at a time.
The final context will never be run, as the other contexts are loaded on
the SPEs, none of which are repoted as free (ie, spu->alloc_state !=
SPU_FREE), so spu_get_idle() doesn't give us a spu to run on. Because
all of the contexts are stopped, none are descheduled by the scheduler
tick, as spusched_tick returns if spu_stopped(ctx).
This change replaces the spu_stopped() check with checking for SCHED_IDLE
in ctx->policy. We set a context's policy to SCHED_IDLE when we're not
in spu_run(). We also favour SCHED_IDLE contexts when looking for contexts
to unbind, but leave their timeslice intact for later resumption.
This patch fixes the following test in the spufs-testsuite:
tests/20-scheduler/02-yield-starvation
Rusty Russell [Sun, 3 Feb 2008 20:11:10 +0000 (07:11 +1100)]
x86: fix lguest build failure
drivers/lguest/x86/switcher_32.S:(.text+0x3815f8):
undefined reference to `LGUEST_PAGES_regs_trapnum'
This problem was caused by asm-offsets.c only having the offsets when
lguest *guest* support was set, not lguest host (host support used to
imply guest support, so now they're separate these bugs come out).
Lguest guest support and host support are separate config options:
they used to be tied together. Sort out which parts of asm-offsets are
needed for Guest and Host.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Fri, 15 Feb 2008 21:17:57 +0000 (22:17 +0100)]
x86: CPA: avoid double checking of alias ranges
When the CPA code is called with an virtual address in the range of
the direct mapping or the high alias then we do not need to run
through the alias check for this range.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 15 Feb 2008 16:29:12 +0000 (17:29 +0100)]
x86: zap invalid and unused pmds in early boot
The early boot code maps KERNEL_TEXT_SIZE (currently 40MB) starting
from __START_KERNEL_map. The kernel itself only needs _text to _end
mapped in the high alias. On relocatible kernels the ASM setup code
adjusts the compile time created high mappings to the relocation. This
creates invalid pmd entries for negative offsets:
0xffffffff80000000 -> pmd entry: ffffffffff2001e3
It points outside of the physical address space and is marked present.
This starts at the virtual address __START_KERNEL_map and goes up to
the point where the first valid physical address (0x0) is mapped.
Zap the mappings before _text and after _end right away in early
boot. This removes also the invalid entries.
Furthermore it simplifies the range check for high aliases.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 18 Feb 2008 19:54:14 +0000 (20:54 +0100)]
x86: CPA, fix alias checks
c_p_a() did not discover all aliases correctly. (such as when called
on vmalloc()-ed areas or ioremap()-ed areas)
Push the alias checks to the lower, physical level and consistently
discover all aliases that might exist: the low direct mappings and
the high linear kernel-text mappings (on 64-bit).
Thanks to Andi Kleen for pointing out that this was buggy.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
which leads to an array overrun if the index is exactly equal to
NES_MAX_USER_WQ_REGIONS. Fix this by bailing out if the index is
greater than or equal to NES_MAX_USER_WQ_REGIONS.
This was spotted by the Coverity checker (CID 2162).
Acked-by: Glenn Streiff <gstreiff@neteffect.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Hp is providing a Hardware WatchDog Timer driver that will only work with the
specific HW Timer located in the HP ProLiant iLO 2 ASIC. The iLO 2 HW Timer
will generate a Non-maskable Interrupt (NMI) 9 seconds before physically
resetting the server, by removing power, so that the event can be logged to
the HP Integrated Management Log (IML), a Non-Volatile Random Access Memory
(NVRAM). The logging of the event is performed using the HP ProLiant ROM via
an Industry Standard access known as a BIOS Service Directory Entry.
Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
V4L/DVB (7219): zoran: Fix namespace conflicts with Zoran 'GPIO_MAX' enum
Thanks to Martin Michlmayr <tbm@cyrius.com> for reporting this issue:
The zoran driver fails to compile on the ARM Orion platform with:
In file included from drivers/media/video/zoran_procfs.c:50:
drivers/media/video/zoran.h:232: error: expected identifier before numeric
constant
The reason is that drivers/media/video/zoran.h defines an enum with
GPIO_MAX in it, but Orion contains a #define GPIO_MAX 32 in
include/asm-arm/arch-orion/orion.h
V4L/DVB (7201): cx88-mpeg: Fix race condition in variable access
There was a possible race condition in the increment/decrement of
the active device references counter.
Thanks to Trent Piepho (xyzzy@speakeasy.org) for bringing it up.
Jiri Slaby [Wed, 13 Feb 2008 23:04:49 +0000 (20:04 -0300)]
V4L/DVB (7198): V4L, include ioctl.h in videodev headers
Fix compilation of user processes which includes videodev*.h but
not includes linux/ioctl.h:
v4l2ext_helper.c: In function 'process_ioctl':
v4l2ext_helper.c:183: warning: implicit declaration of function '_IOWR'
v4l2ext_helper.c:183: error: expected expression before 'struct'
v4l2ext_helper.c:183: error: case label does not reduce to an integer constant
The initial work to convert the bttv driver to V4L2 "Partial conversion
from V4L1 to V4L2" (e84619b17440ccca4e4db7583d126c4189b987e5), missed
the line which set the appropriate overlay crop structure in the newly
allocated bttv_buffer. This then causes a divide error in the
bttv_calc_geo function.
Signed-off-by: Robert Fitzsimons <robfitz@273k.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
James Bottomley [Sun, 17 Feb 2008 17:24:51 +0000 (11:24 -0600)]
[SCSI] gdth: don't call pci_free_consistent under spinlock
The spinlock is held over too large a region: pscratch is a permanent
address (it's allocated at boot time and never changes). All you need
the smp lock for is mediating the scratch in use flag, so fix this by
moving the spinlock into the case where we set the pscratch_busy flag
to false.
Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
FUJITA Tomonori [Sat, 16 Feb 2008 06:24:41 +0000 (15:24 +0900)]
[SCSI] qla2xxx: fix compile warning for printk format
scsi/qla2xxx/qla_dfs.c: In function 'qla2x00_dfs_fce_show':
scsi/qla2xxx/qla_dfs.c:26: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t'
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
The panic occurs if we get a MSGIN or MSGOUT for an unidentified SCB
(meaning we didn't identify the outstanding command it was for). For
MSGIN this is wrong because it could be an unsolicited negotiation
MSGIN from the target.
Still panic on unsolicited MSGOUT because this would represent a
mistake in the negotiation phases. However, we should fix this as
well. The specs say we should go to bus free for unexpected msgin.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Kyle McMartin [Wed, 17 Oct 2007 16:25:00 +0000 (12:25 -0400)]
[SCSI] mpt fusion: kill warnings in mptbase.h on parisc64
Verified all the arches necessary select the CONFIG_64BIT symbol. This
also kills the warning (since it was using the 32-bit case) on parisc64
and mips64.
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
The second message is because the driver fails to identify the task
it's being asked to abort. On closer inpection, there's a thinko in
the for each task loop over pending tasks in both the REQ_TASK_ABORT
and REQ_DEVICE_RESET cases where it doesn't look at the task on the
pending list but at the one on the ESCB (which is always NULL).
Fix by looking at the right task. Also add a print for the case where
the pending SCB doesn't have a task attached.
Not sure if this will fix all the problems, but it's a definite first
step.
Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
changes:
1. change char to unsigned char to avoid type change later.
2. preserve len for page1
3. need to move desc_ptr even the entry is not enclosure_component_device/raid.
so keep desc_ptr on right position
4. record page7 len, and double check if desc_ptr out of boundary before touch.
5. fix typo in subenclosure checking: should use hdr_buf instead.
[jejb: style fixes]
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Roland Stoll [Mon, 11 Feb 2008 16:00:34 +0000 (13:00 -0300)]
V4L/DVB (7194): cx88-mpeg: Allow concurrent access to cx88-mpeg devices
It currently isn't possible to open the frontend device of cx88-mpeg devices
(DVB or Blackbird) multiple times concurrently. (for instance, to attach a
signal monitoring tool while reading a stream, or to send a frequency change
ioctl) This patch fixes that condition.
Signed-off-by: Roland Stoll <roland@xindex.de> Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org> Reviewed-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Tobias Lorenz [Tue, 5 Feb 2008 01:26:08 +0000 (22:26 -0300)]
V4L/DVB (7188): radio-si470x version 1.0.6
This patch combines all the finished discussions and its resulting patches from
the mailing list.
The version 1.0.6 is mainly influenced by Oliver Neukum. He found a lot of
small issues, that are fixed with this patch now. For me the most interesting
thing is, that it's now safer to use it on other architectures.
The history for version 1.0.6 is:
- fixed coverity checker warnings in *_usb_driver_disconnect
- probe()/open() race by correct ordering in probe()
- DMA coherency rules by separate allocation of all buffers
- use of endianness macros
- abuse of spinlock, replaced by mutex
- racy handling of timer in disconnect, replaced by delayed_work
- racy interruptible_sleep_on(), replaced with wait_event_interruptible()
- handle signals in read()
The driver is tested with all Debian/testing radio programs and rdsd. The patch
is tested against checkpatch.pl v1.12.
Michael Krufky [Sun, 10 Feb 2008 23:13:25 +0000 (20:13 -0300)]
V4L/DVB (7183): radio-si470x: fix build warning
fix the following build warning:
radio-si470x.c: In function 'si470x_get_rds_registers':
radio-si470x.c:562: warning: format '%ld' expects type 'long int',
but argument 3 has type 'unsigned int'
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
So, only one board could use an USB host at the same time. After the patch, it
is possible to use more than one em28xx at the same time, on the same usb host,
if the image size is slower or equal to 345600, since those images will
require about 30% of the URBs:
Andrew Morton [Tue, 5 Feb 2008 10:37:21 +0000 (07:37 -0300)]
V4L/DVB (7156): em28xx/em28xx-core.c: fix use of potentially uninitialized variable
drivers/media/video/em28xx/em28xx-core.c: In function 'em28xx_set_audio_source':
drivers/media/video/em28xx/em28xx-core.c:276: warning: 'no_ac97' may be used uninitialized in this function
This looks like a genuine bug to me.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Tobias Lorenz [Tue, 29 Jan 2008 01:43:13 +0000 (22:43 -0300)]
V4L/DVB (7108): radio-si470x.c: check-after-use
Adrian used the coverity checker against radio-si470x and found this:
> The Coverity checker spotted the following check-after-use in
> drivers/media/radio/radio-si470x.c:
>
> <-- snip -->
> static void si470x_usb_driver_disconnect(struct usb_interface *intf)
> {
> struct si470x_device *radio = usb_get_intfdata(intf);
>
> del_timer_sync(&radio->timer); <------------------
> flush_scheduled_work();
>
> usb_set_intfdata(intf, NULL);
> if (radio) { <------------------
> video_unregister_device(radio->videodev);
> kfree(radio->buffer);
> kfree(radio);
> }
> }
> <-- snip -->
>
> Either "radio" can be NULL and this case has to be properly handled or
> the NULL check is not required.
These two lines should indeed better be inside the if statement.
Adrian Bunk [Tue, 29 Jan 2008 01:11:15 +0000 (22:11 -0300)]
V4L/DVB (7102): make tuner-core.c:tuner_list static
tuner_list can become static - and it's anyway a way too generic name
for a global variable - see commit b00ef4b8d8c29bfb5f6f92ee60bc04b604f36ef2
for a completely different global variable of the same name I just made
static...
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch changed the request_region() validation to avoid invalid return.
Thanks to Roland Kletzing <devzero@web.de> for bug report and data collection.
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Tobias Lorenz [Sun, 27 Jan 2008 17:54:07 +0000 (14:54 -0300)]
V4L/DVB (7091): radio-si470x improvements and seldom problem fixed in tuning functions
I updated the radio-si470x driver another time. Here are the commented history entries:
- number of seek_retries changed to tune_timeout
The last versions checked for the end of frequency tuning by polling a si470x register.
Therefore polling depended on the usb utilization.
This was changed to have a constant timeout now.
- fixed problem with incomplete tune operations by own buffers
The last version used a shared buffer to assembly the USB HID reports.
It sometimes happened, that multiple functions were modifing this buffer simultanuously.
When sending such reports, the hardware returned USB stalls (-EPIPE).
Now buffers of the correct size (smaller than before) are allocated as local variables.
- optimization of variables
The size of some variables has been reduced to allow the compiler to generate more optimized code.
- improved error logging
At some important location, error checking was improved.
Especially the usb transfers to access si470x registers and the tuning functions were modified.
Hermann Pitton [Sun, 20 Jan 2008 22:42:01 +0000 (19:42 -0300)]
V4L/DVB (7084): saa7134: add support for the Medion / Creatix CTX948 card
This adds support for analog inputs and DVB-T.
Good sensitivity for DVB-T currently needs to use analog TV first.
DVB-S support is not yet completed, but is on the way.
As pointed by Adrian Bunk, with I2C=m and VIDEO_DEV=y, videodev brokes.
This patch moves the functions that videodev needs from v4l2-common. It also
fixes some Kconfig changes.
After this patch, I2C=m / VIDEO_DEV=y will make v4l2 core statically linked
into kernel. v4l2-common will be m, and all V4L drivers will also be m.
This approach is very conservative, since it is possible to have V4L drivers
that don't need I2C or v4l2-common. The better is to map what drivers really
need v4l2-common, making them to select v4l2-common, and allowing the others to
be 'y', 'm' and 'n'.
[XFRM]: Fix ordering issue in xfrm_dst_hash_transfer().
Keep ordering of policy entries with same selector in
xfrm_dst_hash_transfer().
Issue should not appear in usual cases because multiple policy entries
with same selector are basically not allowed so far. Bug was pointed
out by Sebastien Decugis <sdecugis@hongo.wide.ad.jp>.
We could convert bydst from hlist to list and use list_add_tail()
instead.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Acked-by: Sebastien Decugis <sdecugis@hongo.wide.ad.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
S.Çağlar Onur [Mon, 18 Feb 2008 07:25:57 +0000 (23:25 -0800)]
[BLUETOOTH] net/bluetooth/hci_core.c: Use time_* macros
The functions time_before, time_before_eq, time_after, and
time_after_eq are more robust for comparing jiffies against other
values.
So following patch implements usage of the time_after() macro, defined
at linux/jiffies.h, which deals with wrapping correctly
Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 14 Feb 2008 08:58:44 +0000 (00:58 -0800)]
[SPARC64]: Add -mtune=ultrasparc3 if possible.
This gives better heuristics for the cost of a multiply (fixed
5 cycles), rather than the 'ultrasparc' setting (variable, and
unpredictable if the second argument is non-constant).
Example code size savings:
text data bss dec hex filename 3823690 304040 448880 4576610 45d562 vmlinux 3824521 304040 448880 4577441 45d8a1 vmlinux.orig
Signed-off-by: David S. Miller <davem@davemloft.net>
Jarek Poplawski [Mon, 18 Feb 2008 06:31:19 +0000 (22:31 -0800)]
[AX25] ax25_out: check skb for NULL in ax25_kick()
According to some OOPS reports ax25_kick tries to clone NULL skbs
sometimes. It looks like a race with ax25_clear_queues(). Probably
there is no need to add more than a simple check for this yet.
Another report suggested there are probably also cases where ax25
->paclen == 0 can happen in ax25_output(); this wasn't confirmed
during testing but let's leave this debugging check for some time.
Reported-and-tested-by: Jann Traschewski <jann@gmx.de> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Make the indented lines aligned in the output (not in the code).
Signed-off-by: Uwe Kleine-Koenig <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-2.6-omap-h63xx.git / log