- 06 Jun, 2008 10 commits
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Arjan van de Ven authored
For the normal WARN_ON() etc we added a print-the-modules-list already, which is very useful to figure out candidates for certain types of bugs. This patch adds the same print to the "scheduling while atomic" BUG warning, for the same reason: when we get here it's very useful to see which modules are loaded, to narrow down the candidate code list. Signed-off-by:
Arjan van de Ven <arjan@linux.intel.com> Cc: mingo@elte.hu Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Richard Kennedy authored
This patch removes 24 bytes of padding and allows 1 extra object per slab on my fedora based config. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Rabin Vincent authored
Fix this warning, which appears with !CONFIG_SMP: kernel/sched.c:1216: warning: `init_hrtick' defined but not used Signed-off-by:
Rabin Vincent <rabin@rab.in> Signed-off-by:
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Ingo Molnar authored
[ Stephen Rothwell <sfr@canb.auug.org.au>: build fix ] Signed-off-by:
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Thomas Gleixner authored
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Dmitry Adamushko authored
Nothing really serious here, mainly just a matter of nit-picking :-/ From: Dmitry Adamushko <dmitry.adamushko@gmail.com> For CONFIG_SCHED_DEBUG && CONFIG_SYSCT configs, sd->flags can be altered while being manipulated in rebalance_domains(). Let's do an atomic check. We rely here on the atomicity of read/write accesses for aligned words. Signed-off-by:
Dmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by:
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Gregory Haskins authored
The currently logic inadvertently skips the last task on the run-queue, resulting in missed balance opportunities. Signed-off-by:
Gregory Haskins <ghaskins@novell.com> Signed-off-by:
David Bahi <dbahi@novell.com> CC: Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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Gregory Haskins authored
The current code use a linear algorithm which causes scaling issues on larger SMP machines. This patch replaces that algorithm with a 2-dimensional bitmap to reduce latencies in the wake-up path. Signed-off-by:
Steven Rostedt <srostedt@redhat.com> Signed-off-by:
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Mike Galbraith authored
it is safe to ignore timers and flags when the feature is disabled. Signed-off-by:
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Gregory Haskins authored
Dmitry Adamushko pointed out a known flaw in the rt-balancing algorithm that could allow suboptimal balancing if a non-migratable task gets queued behind a running migratable one. It is discussed in this thread: http://lkml.org/lkml/2008/4/22/296 This issue has been further exacerbated by a recent checkin to sched-devel (git-id 5eee63a5ebc19a870ac40055c0be49457f3a89a3). >From a pure priority standpoint, the run-queue is doing the "right" thing. Using Dmitry's nomenclature, if T0 is on cpu1 first, and T1 wakes up at equal or lower priority (affined only to cpu1) later, it *should* wait for T0 to finish. However, in reality that is likely suboptimal from a system perspective if there are other cores that could allow T0 and T1 to run concurrently. Since T1 can not migrate, the only choice for higher concurrency is to try to move T0. This is not something we addessed in the recent rt-balancing re-work. This patch tries to enhance the balancing algorithm by accomodating this scenario. It accomplishes this by incorporating the migratability of a task into its priority calculation. Within a numerical tsk->prio, a non-migratable task is logically higher than a migratable one. We maintain this by introducing a new per-priority queue (xqueue, or exclusive-queue) for holding non-migratable tasks. The scheduler will draw from the xqueue over the standard shared-queue (squeue) when available. There are several details for utilizing this properly. 1) During task-wake-up, we not only need to check if the priority preempts the current task, but we also need to check for this non-migratable condition. Therefore, if a non-migratable task wakes up and sees an equal priority migratable task already running, it will attempt to preempt it *if* there is a likelyhood that the current task will find an immediate home. 2) Tasks only get this non-migratable "priority boost" on wake-up. Any requeuing will result in the non-migratable task being queued to the end of the shared queue. This is an attempt to prevent the system from being completely unfair to migratable tasks during things like SCHED_RR timeslicing. I am sure this patch introduces potentially "odd" behavior if you concoct a scenario where a bunch of non-migratable threads could starve migratable ones given the right pattern. I am not yet convinced that this is a problem since we are talking about tasks of equal RT priority anyway, and there never is much in the way of guarantees against starvation under that scenario anyway. (e.g. you could come up with a similar scenario with a specific timing environment verses an affinity environment). I can be convinced otherwise, but for now I think this is "ok". Signed-off-by:
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- 05 Jun, 2008 30 commits
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] pxa: fix tosa.c build error [ARM] 5067/1: _raw_write_can_lock macro bugfix [ARM] 5070/1: pxa: add GPIO104_PSKTSEL to pxa27x MFP configuration [ARM] 5068/1: PXA2xx Additional gpio definitions [ARM] 5066/2: EM-X270: Fix DM9000 IRQ flags initialisation [ARM] 5065/2: CM-X270: Fix DM9000 IRQ flags initialisation [ARM] 5062/1: pxa: remove unused definition of CONFIG_ARCH_COTULLA_IDP [ARM] 5060/1: remove unnecessary include of asm/io.h [ARM] fix AT91 include loops
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Ben Collins authored
Fairly simple. "dev_use" was being allocated as a zero length array because of bad math on 64-bit systems, causing a crash in find_first_zero_bit(). One-liner follows: Signed-off-by:
Ben Collins <ben.collins@canonical.com> Acked-by:
Pierre Ossman <drzeus@drzeus.cx> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (48 commits) V4L/DVB (8001): dib0070: fix dib0070_attach when !CONFIG_DVB_TUNER_DIB0070 V4L/DVB (8000): tda827x: fix NULL pointer in tda827xa_lna_gain V4L/DVB (7990): Fix entry for PowerColor RA 330 and make it run with firmware version 2.7 V4L/DVB (7983): tda18271_calc_rf_cal must return the return value of tda18271_lookup_map V4L/DVB (7978): cx18: explicitly test for XC2028 tuner V4L/DVB (7977): cx18: fix init order and remove duplicate open_on_first_use. V4L/DVB (7975): saa7134_empress V4L/DVB (7974): fix MEDIA_TUNER && FW_LOADER build error V4L/DVB (7972): or51132.c: unaligned V4L/DVB (7971): usb: unaligned V4L/DVB (7970): mix trivial endianness annotations V4L/DVB (7969): m920x: unaligned access V4L/DVB (7968): zoran: endianness annotations V4L/DVB (7967): bt8xx: unaligned access V4L/DVB (7966): cx18: direct dereferencing of iomem V4L/DVB (7965): annotate bcx_riscmem V4L/DVB (7964): cx18 iomem annotations V4L/DVB (7963): ivtv: trivial annotations V4L/DVB (7962): ttusb endianness annotations and fixes V4L/DVB (7961): fix endianness bug in dib0700_devices.c ...
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: Fix divide by zero error in build_clear_page() and build_copy_page() [MIPS] Fix typo in header guard [MIPS] Fix build error - Delete debugging crap that crept in with CMP [MIPS] Add accessors for random register. [MIPS] IP27: misc fixes [MIPS] IP27: Fix clockevent setup [MIPS] IP27: Fix bootmem memory setup [MIPS] remove CONFIG_CPU_R4000 line from Makefile [MIPS] Fix check for valid stack pointer during backtrace [MIPS] Add missing braces to pte_mkyoung [MIPS] R4700: Fix build_tlb_probe_entry [MIPS] Alchemy: dbdma: add API to delete custom DDMA device ids. [MIPS] Alchemy: export get_au1x00_speed for modules
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git://git.infradead.org/~dwmw2/mtd-2.6.26Linus Torvalds authored
* git://git.infradead.org/~dwmw2/mtd-2.6.26: [MTD] [MAPS] Fix cmdlineparse handling in mapping files [MTD] [NAND] pxa: fix incorrect calling of pxa3xx_nand_config() on resume path
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Willy Tarreau authored
Suggest how to deal with patch modifications caused by merging or back-porting when you're a maintainer. Signed-off-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Chris Wright authored
- Don't trust a length which is greater than the working buffer. An invalid length could cause overflow when calculating buffer size for decoding oid. - An oid length of zero is invalid and allows for an off-by-one error when decoding oid because the first subid actually encodes first 2 subids. - A primitive encoding may not have an indefinite length. Thanks to Wei Wang from McAfee for report. Cc: Steven French <sfrench@us.ibm.com> Cc: stable@kernel.org Acked-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
Chris Wright <chrisw@sous-sol.org> Signed-off-by:
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Nick Piggin authored
Alias brd to rd in the hope of helping legacy users. Suggested by Jan. Signed-off-by:
Nick Piggin <npiggin@suse.de> Signed-off-by:
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Stefan Richter authored
Here is an attempt to translate the prompt and help text into something which is legible and, as a bonus, correct. Signed-off-by:
Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by:
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David Howells authored
ip_fast_csum() requires a memory clobber on its inline asm as it accesses memory in a fashion that gcc can't predict. The GCC manual says: If your assembler instructions access memory in an unpredictable fashion, add `memory' to the list of clobbered registers. This will cause GCC to not keep memory values cached in registers across the assembler instruction and not optimize stores or loads to that memory. The bug hasn't been noticed in FRV, but it has been seen in PA-RISC. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Bjorn Helgaas authored
We don't need to reserve "unset" resources. Trying to reserve them results in messages like this, which are ugly but harmless: system 00:08: iomem range 0x0-0x0 could not be reserved Future PNP patches will remove use of IORESOURCE_UNSET, but we still need it for now. Signed-off-by:Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
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Yoichi Yuasa authored
Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Vegard Nossum authored
Signed-off-by:
Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by:
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Ralf Baechle authored
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Ralf Baechle authored
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Thomas Bogendoerfer authored
- fix PCI interrupt assignment by emulating ioc3 interrupt pin register - use pci_probe_only mode - select correct page size in bridge - remove no longer needed ioc3_sio_init() code [Ralf: Fix for 64kB or larger pagesizes] Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by:
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Thomas Bogendoerfer authored
Fix breakage introduced by converting hub_rt to clockevent. Signed-off-by:
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Thomas Bogendoerfer authored
Changes in the generic bootmem code broke memory setup for IP27. This patch fixes this by replacing lots of special IP27 code with generic bootmon code. This has been tested only on a single node. Signed-off-by:
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Adrian Bunk authored
The existing options are named CONFIG_CPU_R4300 and CONFIG_CPU_R4X00, and they are directly below. Reported-by:
Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by:
Adrian Bunk <bunk@kernel.org> Signed-off-by:
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Thomas Bogendoerfer authored
The newly added check for valid stack pointer address breaks at least for 64bit kernels. Use __get_user() for accessing stack content to avoid crashes, when doing the backtrace. Signed-off-by:
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Ilpo Järvinen authored
Only the version pte_mkyoung for 36-bit pagetables on 32-bit hw was affected and with this bug being around since November 29, 2004 there is evidence to suport the assumption it was benign ;-) Signed-off-by:
Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by:
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Thomas Bogendoerfer authored
Treat R4700 like R4600 in build_tlb_probe_entry. Without this fix kernel will lock up. Signed-off-by:
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Manuel Lauss authored
Add API to delete custom DDMA device ids create with au1xxx_ddma_device_add(). Signed-off-by:
Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by:
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Manuel Lauss authored
au1xmmc.c driver depends on it, so export it for modules. Signed-off-by:
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Hugh Dickins authored
Fix G5 SATA irq 18: nobody cared, reported on -rc5 by Olaf Hering: fixlet to a57c1bad libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl Signed-off-by:
Hugh Dickins <hugh@veritas.com> Acked-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Tested-by:
Olaf Hering <olaf@aepfle.de> Signed-off-by:
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Michael Krufky authored
Signed-off-by:
Michael Krufky <mkrufky@linuxtv.org> Signed-off-by:
Mauro Carvalho Chehab <mchehab@infradead.org>
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Sigmund Augdal authored
Check that tda827x_config is defined before attempting to use it. Signed-off-by:
Sigmund Augdal <sigmund@snap.tv> Signed-off-by:
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Daniel Gimpelevich authored
Signed-off-by:
Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> Signed-off-by:
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Michael Krufky authored
On the TDA18271HD/C1, we perform RF tracking filter correction for VHF low band, only. If supplied a frequency out of range, the error must be returned to the caller (tda18271c1_rf_tracking_filter_calibration) so that it can decide whether or not to write to register EB14, RFC_CPROG[7:0] Signed-off-by:
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Hans Verkuil authored
Testing whether xceive_pin is non-zero is not good enough as 0 is a valid value. Instead explicitly test whether the Xceive tuner is used. Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
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