- 06 6月, 2008 26 次提交
-
-
由 Mike Galbraith 提交于
it is safe to ignore timers and flags when the feature is disabled. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
-
由 Gregory Haskins 提交于
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: NGregory Haskins <ghaskins@novell.com> CC: Dmitry Adamushko <dmitry.adamushko@gmail.com> CC: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
-
由 Linus Torvalds 提交于
* 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
-
由 Ben Collins 提交于
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: NBen Collins <ben.collins@canonical.com> Acked-by: NPierre Ossman <drzeus@drzeus.cx> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb由 Linus Torvalds 提交于
* 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 ...
-
git://ftp.linux-mips.org/pub/scm/upstream-linus由 Linus Torvalds 提交于
* '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
-
git://git.infradead.org/~dwmw2/mtd-2.6.26由 Linus Torvalds 提交于
* 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
-
由 Willy Tarreau 提交于
Suggest how to deal with patch modifications caused by merging or back-porting when you're a maintainer. Signed-off-by: NWilly Tarreau <w@1wt.eu> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Chris Wright 提交于
- 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: NPatrick McHardy <kaber@trash.net> Signed-off-by: NChris Wright <chrisw@sous-sol.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Nick Piggin 提交于
Alias brd to rd in the hope of helping legacy users. Suggested by Jan. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Stefan Richter 提交于
Here is an attempt to translate the prompt and help text into something which is legible and, as a bonus, correct. Signed-off-by: NStefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 David Howells 提交于
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: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Bjorn Helgaas 提交于
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: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Yoichi Yuasa 提交于
Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Vegard Nossum 提交于
Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Thomas Bogendoerfer 提交于
- 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: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Thomas Bogendoerfer 提交于
Fix breakage introduced by converting hub_rt to clockevent. Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Thomas Bogendoerfer 提交于
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: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Adrian Bunk 提交于
The existing options are named CONFIG_CPU_R4300 and CONFIG_CPU_R4X00, and they are directly below. Reported-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Thomas Bogendoerfer 提交于
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: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Ilpo Järvinen 提交于
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: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Thomas Bogendoerfer 提交于
Treat R4700 like R4600 in build_tlb_probe_entry. Without this fix kernel will lock up. Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Manuel Lauss 提交于
Add API to delete custom DDMA device ids create with au1xxx_ddma_device_add(). Signed-off-by: NManuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
由 Manuel Lauss 提交于
au1xmmc.c driver depends on it, so export it for modules. Signed-off-by: NManuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
-
- 05 6月, 2008 14 次提交
-
-
由 Hugh Dickins 提交于
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: NHugh Dickins <hugh@veritas.com> Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk> Tested-by: NOlaf Hering <olaf@aepfle.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Michael Krufky 提交于
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Sigmund Augdal 提交于
Check that tda827x_config is defined before attempting to use it. Signed-off-by: NSigmund Augdal <sigmund@snap.tv> Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Daniel Gimpelevich 提交于
Signed-off-by: NDaniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Michael Krufky 提交于
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: NMichael Krufky <mkrufky@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Hans Verkuil 提交于
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: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Hans Verkuil 提交于
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Dmitri Belimov 提交于
This is patch for fix data structure in querycap syscall. Signed-off-by: NBeholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Ingo Molnar 提交于
-tip testing found the following build failure: LD .tmp_vmlinux1 drivers/built-in.o: In function `generic_set_freq': tuner-xc2028.c:(.text+0xbd896): undefined reference to `request_firmware' tuner-xc2028.c:(.text+0xbdd7a): undefined reference to `release_firmware' drivers/built-in.o: In function `xc_load_fw_and_init_tuner': xc5000.c:(.text+0xc68e6): undefined reference to `request_firmware' xc5000.c:(.text+0xc6abe): undefined reference to `release_firmware' with this config: http://redhat.com/~mingo/misc/config-Tue_May_20_18_11_34_CEST_2008.bad the reason is another kconfig tool bug that has to be worked around in the driver's Kconfig file: if FW_LOADER is selected in a second dependency, that is not properly propagated up the dependencies. in this case, FW_LOADER is selected from MEDIA_TUNER_XC2028: config MEDIA_TUNER_XC2028 tristate "XCeive xc2028/xc3028 tuners" depends on VIDEO_MEDIA && I2C depends on HOTPLUG select FW_LOADER which got selected by MEDIA_TUNER: config MEDIA_TUNER tristate default VIDEO_MEDIA && I2C depends on VIDEO_MEDIA && I2C select FW_LOADER if !MEDIA_TUNER_CUSTOMIZE && HOTPLUG but the kconfig tool did not pick up this second-order dependency and allowed CONFIG_FW_LOADER=m to be selected - in which case the build fails. the workaround i found was to move the select of FW_LOADER one level up, so that the buggy kconfig tool can notice it and can act appropriately. This problem can probably be worked around in other ways as well, i went for the minimal fix. Obviously, the kconfig tool should be fixed, it is not reasonable to expect driver authors to do manual dependency resolution (that kconfig itself already does) and uglify the Kconfig files. The kconfig tool did nothing to warn about this situation and did not prevent this faulty .config from being constructed. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
-