Commit Graph

43823 Commits

Author SHA1 Message Date
Helge Deller
d95159cf1b [PATCH] various fbdev files: mark structs and array read-only
- move some structs and arrays to the read-only (.rodata) section

[akpm@osdl.org: build fix]
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>
2006-12-08 08:29:05 -08:00
Helge Deller
adf6b20654 [PATCH] fbcmap.c: mark structs const or __read_mostly
- 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>
2006-12-08 08:29:05 -08:00
Arnaud Patard (Rtp
357b819dda [PATCH] s3c2410fb: Add support for STN displays
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>
2006-12-08 08:29:05 -08:00
Jordan Crouse
c25623f554 [PATCH] video: Get the default mode from the right database
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>
2006-12-08 08:29:05 -08:00
Maciej W. Rozycki
572c04b24b [PATCH] pmagb-b-fb: Fix a default clock frequency
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>
2006-12-08 08:29:05 -08:00
David Rientjes
b860e73a54 [PATCH] video SiS: remove unnecessary variables in SiS_DDC2Delay
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>
2006-12-08 08:29:05 -08:00
Alan Cox
af342e939d [PATCH] igafb: switch to pci_get API
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>
2006-12-08 08:29:05 -08:00
Jeff Garzik
fd717689f4 [PATCH] atyfb, rivafb: minor fixes
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>
2006-12-08 08:29:05 -08:00
Amol Lad
945f0ee257 [PATCH] ioremap balanced with iounmap for drivers/video/S3triofb
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>
2006-12-08 08:29:05 -08:00
Amol Lad
57354c42f1 [PATCH] ioremap balanced with iounmap for drivers/video/amifb
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>
2006-12-08 08:29:05 -08:00
Amol Lad
6792951b6a [PATCH] ioremap balanced with iounmap for drivers/video/atafb
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>
2006-12-08 08:29:05 -08:00
Amol Lad
b2a85aebf9 [PATCH] ioremap balanced with iounmap for drivers/video/atyfb_base
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>
2006-12-08 08:29:05 -08:00
Amol Lad
d8b8c0a697 [PATCH] ioremap balanced with iounmap for drivers/video/cirrusfb
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>
2006-12-08 08:29:05 -08:00
Amol Lad
d02abed8aa [PATCH] ioremap balanced with iounmap for drivers/video/cyberfb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
8d4c767ef5 [PATCH] ioremap balanced with iounmap for drivers/video/ffb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
1b3349fa44 [PATCH] ioremap balanced with iounmap for drivers/video/fm2fb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
1bedb0b2f6 [PATCH] ioremap balanced with iounmap for drivers/video/hpfb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
164a765b98 [PATCH] ioremap balanced with iounmap for drivers/video/macfb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
f190017b88 [PATCH] ioremap balanced with iounmap for drivers/video/offb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
2b7574da25 [PATCH] ioremap balanced with iounmap for drivers/video/platinumfb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
295a1b4767 [PATCH] ioremap balanced with iounmap for drivers/video/pvr2fb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
027b53dd92 [PATCH] ioremap balanced with iounmap for drivers/video/retz3fb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
9cf2014aad [PATCH] ioremap balanced with iounmap for drivers/video/stifb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
e4bf051b4f [PATCH] ioremap balanced with iounmap for drivers/video/tgafb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
a02f6402d5 [PATCH] ioremap balanced with iounmap for drivers/video/tridentfb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
b88a57cc64 [PATCH] ioremap balanced with iounmap for drivers/video/vesafb
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>
2006-12-08 08:29:04 -08:00
Amol Lad
ef26dd7ffa [PATCH] ioremap balanced with iounmap for drivers/video/virgefb
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>
2006-12-08 08:29:04 -08:00
Sergei Shtylyov
dd607d23ff [PATCH] sl82c105: straighten up IDE control/status register caching
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>
2006-12-08 08:29:03 -08:00
Sergei Shtylyov
b10a068666 [PATCH] pdc202xx_new: fix PIO mode setup
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>
2006-12-08 08:29:03 -08:00
Alan Cox
b148900996 [PATCH] ide: more conversion to pci_get APIs
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>
2006-12-08 08:29:03 -08:00
Eric W. Biederman
6b49a25785 [PATCH] sysctl: fix sys_sysctl interface of ipc sysctls
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>
2006-12-08 08:29:03 -08:00
Eric W. Biederman
9bc9a6bd3c [PATCH] sysctl: simplify ipc ns specific sysctls
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>
2006-12-08 08:29:03 -08:00
Eric W. Biederman
c4b8b769fa [PATCH] sysctl: implement sysctl_uts_string()
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>
2006-12-08 08:29:03 -08:00
Eric W. Biederman
cf9f151c72 [PATCH] sysctl: simplify sysctl_uts_string
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>
2006-12-08 08:29:03 -08:00
Don Mullis
6b1b60f41e [PATCH] fault-injection: defaults likely to please a new user
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>
2006-12-08 08:29:03 -08:00
Don Mullis
f1729c28a3 [PATCH] fault-injection: optimize and simplify should_fail()
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>
2006-12-08 08:29:03 -08:00
Don Mullis
a124c28ef8 [PATCH] fault-injection: Clamp debugfs stacktrace-depth to MAX_STACK_TRACE_DEPTH
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>
2006-12-08 08:29:03 -08:00
Don Mullis
08b3df2d16 [PATCH] fault-injection: Use bool-true-false throughout
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>
2006-12-08 08:29:03 -08:00
Don Mullis
5d0ffa2b84 [PATCH] fault-injection: Correct, disambiguate, and reformat documentation
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>
2006-12-08 08:29:03 -08:00
Andrew Morton
83ba254688 [PATCH] fault-injection: stacktrace filtering kconfig fix
`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>
2006-12-08 08:29:03 -08:00
Andrew Morton
1ab8509a31 [PATCH] fault-injection Kconfig cleanup
- 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>
2006-12-08 08:29:03 -08:00
Akinobu Mita
329409aeda [PATCH] fault injection: stacktrace filtering
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>
2006-12-08 08:29:03 -08:00
Akinobu Mita
f4f154fd92 [PATCH] fault injection: process filtering for fault-injection capabilities
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>
2006-12-08 08:29:02 -08:00
Akinobu Mita
c17bb49517 [PATCH] fault-injection capability for disk IO
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>
2006-12-08 08:29:02 -08:00
Akinobu Mita
933e312e73 [PATCH] fault-injection capability for alloc_pages()
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>
2006-12-08 08:29:02 -08:00
Akinobu Mita
8a8b6502fb [PATCH] fault-injection capability for kmalloc
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>
2006-12-08 08:29:02 -08:00
Akinobu Mita
6ff1cb355e [PATCH] fault-injection capabilities infrastructure
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>
2006-12-08 08:29:02 -08:00
Akinobu Mita
de1ba09b21 [PATCH] fault injection: documentation and scripts
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>
2006-12-08 08:29:02 -08:00
Yan Burman
4b3bb06bea [PATCH] nfsd: replace kmalloc+memset with kcalloc + simplify NULL check
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>
2006-12-08 08:29:02 -08:00
Jesper Juhl
14d2b59e8c [PATCH] NFS3: Calculate 'w' a bit later in nfs3svc_encode_getaclres()
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>
2006-12-08 08:29:02 -08:00