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* [PATCH] fbcmap.c: mark structs const or __read_mostlyHelge Deller2006-12-082-30/+31
| | | | | | | | | | | | | | | | - Mark the default colormaps read-only, as nobody should be allowed to modify them - Additionally mark color values as __read_mostly since they will only be modified (very seldom) by fb_invert_cmaps() - Add named C99-initializers in fb_cmap structs and use the ARRAY_SIZE() macro Signed-off-by: Helge Deller <deller@gmx.de> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s3c2410fb: Add support for STN displaysArnaud Patard (Rtp2006-12-082-43/+173
| | | | | | | | | | | | | | | | This patch adds support for stn displays on the s3c2410 arm SoC. The LCD type is choosen by a new field in the s3c2410fb_mach_info structure and its value is the value of the PNRMODE bits. This worth to be noted as a value of 0 means that you configure a 4 bit dual scan stn display. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] video: Get the default mode from the right databaseJordan Crouse2006-12-081-3/+3
| | | | | | | | | | | | | | | | If no default mode is specified, it should be grabbed from the supplied database, not the default one. [teanropo@jyu.fi: fix it] [akpm@osdl.org: simplify it] [akpm@osdl.org: remove pointless DEFAULT_MODEDB_INDEX] Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Tero Roponen <teanropo@jyu.fi> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pmagb-b-fb: Fix a default clock frequencyMaciej W. Rozycki2006-12-081-1/+1
| | | | | | | | | | | Inspection of real hardware has revealed one of the clock frequencies known to be supported by PMAGB-B hardware is off by 3kHz. Following is a fix. Please apply. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] video SiS: remove unnecessary variables in SiS_DDC2DelayDavid Rientjes2006-12-081-5/+2
| | | | | | | | | | | | | Remove unnecesary iteration and accumulator variables from SiS_DDC2Delay. Originally spotted by Jesper Juhl <jesper.juhl@gmail.com>. Cc: Jesper Juhl <jesper.juhl@gmail.com> Cc: Thomas Winischhofer <thomas@winischhofer.net> Signed-off-by: David Rientjes <rientjes@cs.washington.edu> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] igafb: switch to pci_get APIAlan Cox2006-12-081-2/+4
| | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] atyfb, rivafb: minor fixesJeff Garzik2006-12-084-11/+43
| | | | | | | | | | | | | | | aty128fb: return an error in the unlikely event that we cannot calculate some key PLL info rivafb: * call CalcStateExt() directly, rather than via function pointers, since CalcStateExt() is the only value ever assigned to ->CalcStateExt(). * propagate error return back from CalcVClock() through callers Signed-off-by: Jeff Garzik <jeff@garzik.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/S3triofbAmol Lad2006-12-081-2/+5
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/amifbAmol Lad2006-12-081-3/+5
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/atafbAmol Lad2006-12-081-1/+12
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/atyfb_baseAmol Lad2006-12-081-0/+8
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/cirrusfbAmol Lad2006-12-081-2/+13
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/cyberfbAmol Lad2006-12-081-0/+2
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/ffbAmol Lad2006-12-081-0/+4
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/fm2fbAmol Lad2006-12-081-0/+1
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/hpfbAmol Lad2006-12-081-0/+2
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/macfbAmol Lad2006-12-081-0/+20
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/offbAmol Lad2006-12-081-0/+3
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/platinumfbAmol Lad2006-12-081-0/+3
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/pvr2fbAmol Lad2006-12-081-0/+18
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/retz3fbAmol Lad2006-12-081-1/+3
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/stifbAmol Lad2006-12-081-0/+3
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Helge Deller <deller@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/tgafbAmol Lad2006-12-081-0/+2
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/tridentfbAmol Lad2006-12-081-5/+17
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/vesafbAmol Lad2006-12-081-0/+2
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ioremap balanced with iounmap for drivers/video/virgefbAmol Lad2006-12-081-1/+16
| | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sl82c105: straighten up IDE control/status register cachingSergei Shtylyov2006-12-081-18/+13
| | | | | | | | | | | | | | | | | | Straighten up the IDE control/status register caching -- you *really* can't cache the shared register per-channel and hope that it won't get out ouf sync. Set the PIO fallback mode to PIO0 for the slave drive as well as master -- there was no point in having them different (most probably a resutl of typo). Do a bit of reformat and cleanup while at it... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] pdc202xx_new: fix PIO mode setupSergei Shtylyov2006-12-081-10/+5
| | | | | | | | | | | | Fix pdcnew_tune_drive() to always set the PIO mode requested, not pick the best possible one, change pdcnew_config_drive_xfer_rate() accordingly, and get rid of the duplicate tuneproc() call in config_chipset_for_dma(). Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ide: more conversion to pci_get APIsAlan Cox2006-12-084-12/+18
| | | | | | | | | This completes IDE except for one use which requires a new core PCI function and will be polished up at the end Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sysctl: fix sys_sysctl interface of ipc sysctlsEric W. Biederman2006-12-081-0/+60
| | | | | | | | | | | | | Currently there is a regression and the ipc sysctls don't show up in the binary sysctl namespace. This patch adds sysctl_ipc_data to read data/write from the appropriate namespace and deliver it in the expected manner. [akpm@osdl.org: warning fix] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sysctl: simplify ipc ns specific sysctlsEric W. Biederman2006-12-081-57/+49
| | | | | | | | | | | | | | | Refactor the ipc sysctl support so that it is simpler, more readable, and prepares for fixing the bug with the wrong values being returned in the sys_sysctl interface. The function proc_do_ipc_string() was misnamed as it never handled strings. It's magic of when to work with strings and when to work with longs belonged in the sysctl table. I couldn't tell if the code would work if you disabled the ipc namespace but it certainly looked like it would have problems. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sysctl: implement sysctl_uts_string()Eric W. Biederman2006-12-081-5/+32
| | | | | | | | | | | | The problem: When using sys_sysctl we don't read the proper values for the variables exported from the uts namespace, nor do we do the proper locking. This patch introduces sysctl_uts_string which properly fetches the values and does the proper locking. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sysctl: simplify sysctl_uts_stringEric W. Biederman2006-12-081-102/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The binary interface to the namespace sysctls was never implemented resulting in some really weird things if you attempted to use sys_sysctl to read your hostname for example. This patch series simples the code a little and implements the binary sysctl interface. In testing this patch series I discovered that our 32bit compatibility for the binary sysctl interface is imperfect. In particular KERN_SHMMAX and KERN_SMMALL are size_t sized quantities and are returned as 8 bytes on to 32bit binaries using a x86_64 kernel. However this has existing for a long time so it is not a new regression with the namespace work. Gads the whole sysctl thing needs work before it stops being easy to shoot yourself in the foot. Looking forward a little bit we need a better way to handle sysctls and namespaces as our current technique will not work for the network namespace. I think something based on the current overlapping sysctl trees will work but the proc side needs to be redone before we can use it. This patch: Introduce get_uts() and put_uts() (used later) and remove most of the special cases for when UTS namespace is compiled in. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: defaults likely to please a new userDon Mullis2006-12-083-0/+4
| | | | | | | | | | | | | Assign defaults most likely to please a new user: 1) generate some logging output (verbose=2) 2) avoid injecting failures likely to lock up UI (ignore_gfp_wait=1, ignore_gfp_highmem=1) Signed-off-by: Don Mullis <dwm@meer.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: optimize and simplify should_fail()Don Mullis2006-12-081-7/+4
| | | | | | | | | | | | Trivial optimization and simplification of should_fail(). Do cheaper disqualification tests first (performance gain not quantified). Simplify logic; eliminate goto. Signed-off-by: Don Mullis <dwm@meer.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: Clamp debugfs stacktrace-depth to MAX_STACK_TRACE_DEPTHDon Mullis2006-12-081-4/+23
| | | | | | | | | | Clamp /debug/fail*/stacktrace-depth to MAX_STACK_TRACE_DEPTH. Ensures that a read of /debug/fail*/stacktrace-depth always returns a truthful answer. Signed-off-by: Don Mullis <dwm@meer.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: Use bool-true-false throughoutDon Mullis2006-12-082-22/+20
| | | | | | | | | Use bool-true-false throughout. Signed-off-by: Don Mullis <dwm@meer.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: Correct, disambiguate, and reformat documentationDon Mullis2006-12-082-37/+37
| | | | | | | | | Correct, disambiguate, and reformat documentation. Signed-off-by: Don Mullis <dwm@meer.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection: stacktrace filtering kconfig fixAndrew Morton2006-12-081-1/+1
| | | | | | | | | | | `select' doesn't work very well. With alpha `make allmodconfig' we end up with CONFIG_STACKTRACE enabled, so we end up with undefined save_stacktrace() at link time. Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: Don Mullis <dwm@meer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection Kconfig cleanupAndrew Morton2006-12-081-16/+11
| | | | | | | | | | | | - Fix some spelling and grammatical errors - Make the Kconfig menu more conventional. First you select fault-injection, then under that you select particular clients of it. Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: Don Mullis <dwm@meer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault injection: stacktrace filteringAkinobu Mita2006-12-084-5/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides stacktrace filtering feature. The stacktrace filter allows failing only for the caller you are interested in. For example someone may want to inject kmalloc() failures into only e100 module. they want to inject not only direct kmalloc() call, but also indirect allocation, too. - e100_poll --> netif_receive_skb --> packet_rcv_spkt --> skb_clone --> kmem_cache_alloc This patch enables to detect function calls like this by stacktrace and inject failures. The script Documentaion/fault-injection/failmodule.sh helps it. The range of text section of loaded e100 is expected to be [/sys/module/e100/sections/.text, /sys/module/e100/sections/.exit.text) So failmodule.sh stores these values into /debug/failslab/address-start and /debug/failslab/address-end. The maximum stacktrace depth is specified by /debug/failslab/stacktrace-depth. Please see the example that demonstrates how to inject slab allocation failures only for a specific module in Documentation/fault-injection/fault-injection.txt [dwm@meer.net: reject failure if any caller lies within specified range] Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Don Mullis <dwm@meer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault injection: process filtering for fault-injection capabilitiesAkinobu Mita2006-12-084-1/+86
| | | | | | | | | | | | | | This patch provides process filtering feature. The process filter allows failing only permitted processes by /proc/<pid>/make-it-fail Please see the example that demostrates how to inject slab allocation failures into module init/cleanup code in Documentation/fault-injection/fault-injection.txt Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection capability for disk IOAkinobu Mita2006-12-085-0/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides fault-injection capability for disk IO. Boot option: fail_make_request=<probability>,<interval>,<space>,<times> <interval> -- specifies the interval of failures. <probability> -- specifies how often it should fail in percent. <space> -- specifies the size of free space where disk IO can be issued safely in bytes. <times> -- specifies how many times failures may happen at most. Debugfs: /debug/fail_make_request/interval /debug/fail_make_request/probability /debug/fail_make_request/specifies /debug/fail_make_request/times Example: fail_make_request=10,100,0,-1 echo 1 > /sys/blocks/hda/hda1/make-it-fail generic_make_request() on /dev/hda1 fails once per 10 times. Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection capability for alloc_pages()Akinobu Mita2006-12-082-0/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides fault-injection capability for alloc_pages() Boot option: fail_page_alloc=<interval>,<probability>,<space>,<times> <interval> -- specifies the interval of failures. <probability> -- specifies how often it should fail in percent. <space> -- specifies the size of free space where memory can be allocated safely in pages. <times> -- specifies how many times failures may happen at most. Debugfs: /debug/fail_page_alloc/interval /debug/fail_page_alloc/probability /debug/fail_page_alloc/specifies /debug/fail_page_alloc/times /debug/fail_page_alloc/ignore-gfp-highmem /debug/fail_page_alloc/ignore-gfp-wait Example: fail_page_alloc=10,100,0,-1 The page allocation (alloc_pages(), ...) fails once per 10 times. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection capability for kmallocAkinobu Mita2006-12-083-2/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides fault-injection capability for kmalloc. Boot option: failslab=<interval>,<probability>,<space>,<times> <interval> -- specifies the interval of failures. <probability> -- specifies how often it should fail in percent. <space> -- specifies the size of free space where memory can be allocated safely in bytes. <times> -- specifies how many times failures may happen at most. Debugfs: /debug/failslab/interval /debug/failslab/probability /debug/failslab/specifies /debug/failslab/times /debug/failslab/ignore-gfp-highmem /debug/failslab/ignore-gfp-wait Example: failslab=10,100,0,-1 slab allocation (kmalloc(), kmem_cache_alloc(),..) fails once per 10 times. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault-injection capabilities infrastructureAkinobu Mita2006-12-084-0/+265
| | | | | | | | | | | | | | | This patch provides base functions implement to fault-injection capabilities. - The function should_fail() is taken from failmalloc-1.0 (http://www.nongnu.org/failmalloc/) [akpm@osdl.org: cleanups, comments, add __init] Cc: <okuji@enbug.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Don Mullis <dwm@meer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fault injection: documentation and scriptsAkinobu Mita2006-12-084-0/+265
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch set provides some fault-injection capabilities. - kmalloc() failures - alloc_pages() failures - disk IO errors We can see what really happens if those failures happen. In order to enable these fault-injection capabilities: 1. Enable relevant config options (CONFIG_FAILSLAB, CONFIG_PAGE_ALLOC, CONFIG_MAKE_REQUEST) and if you want to configure them via debugfs, enable CONFIG_FAULT_INJECTION_DEBUG_FS. 2. Build and boot with this kernel 3. Configure fault-injection capabilities behavior by boot option or debugfs - Boot option failslab= fail_page_alloc= fail_make_request= - Debugfs /debug/failslab/* /debug/fail_page_alloc/* /debug/fail_make_request/* Please refer to the Documentation/fault-injection/fault-injection.txt for details. 4. See what really happens. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Don Mullis <dwm@meer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] nfsd: replace kmalloc+memset with kcalloc + simplify NULL checkYan Burman2006-12-082-21/+19
| | | | | | | | | Replace kmalloc+memset with kcalloc and simplify Signed-off-by: Yan Burman <burman.yan@gmail.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NFS3: Calculate 'w' a bit later in nfs3svc_encode_getaclres()Jesper Juhl2006-12-081-4/+4
| | | | | | | | | | | | | | | | | NFS3: Calculate 'w' a bit later in nfs3svc_encode_getaclres() This is a small performance optimization since we can return before needing 'w'. It also saves a few bytes of .text : Before: text data bss dec hex filename 1632 140 0 1772 6ec fs/nfsd/nfs3acl.o After: text data bss dec hex filename 1624 140 0 1764 6e4 fs/nfsd/nfs3acl.o Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NFS2: Calculate 'w' a bit later in nfsaclsvc_encode_getaclres()Jesper Juhl2006-12-081-4/+4
| | | | | | | | | | | | | | | | | NFS2: Calculate 'w' a bit later in nfsaclsvc_encode_getaclres() This is a small performance optimization since we can return before needing 'w'. It also saves a few bytes of .text : Before: text data bss dec hex filename 2406 212 0 2618 a3a fs/nfsd/nfs2acl.o After: text data bss dec hex filename 2400 212 0 2612 a34 fs/nfsd/nfs2acl.o Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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