13 years agoBlackfin arch: split apart dump_bfin_regs and merge/remove show_regs from process...
Mike Frysinger [Wed, 21 Nov 2007 08:46:49 +0000]
Blackfin arch: split apart dump_bfin_regs and merge/remove show_regs from process.c, which was largely duplicated

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: use common __INIT/__FINIT defines rather than setting the .section...
Mike Frysinger [Wed, 21 Nov 2007 08:45:08 +0000]
Blackfin arch: use common __INIT/__FINIT defines rather than setting the .section ourselves to .init.text

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix bug when sending signals with the wrong PC, cause gdb get confused
Robin Getz [Wed, 21 Nov 2007 08:38:05 +0000]
Blackfin arch: fix bug when sending signals with the wrong PC, cause gdb get confused

We need to send signals with the proper PC, or gdb gets
confused, and lots of tests fail. This should fix that.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Ensure we printk out strings with the proper loglevel
Robin Getz [Wed, 21 Nov 2007 08:35:57 +0000]
Blackfin arch: Ensure we printk out strings with the proper loglevel

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Need to specify ax with the .init.text section,
Bernd Schmidt [Wed, 21 Nov 2007 08:33:47 +0000]
Blackfin arch: Need to specify ax with the .init.text section,

Need to specify "ax" with the .init.text section, otherwise the linker will
make unique .init.text.1 .. .init.text.3 sections to cope with the flags

13 years agoBlackfin arch: Update Kconfig to latest Blackfin silicon datasheets
Robin Getz [Wed, 21 Nov 2007 08:29:20 +0000]
Blackfin arch: Update Kconfig to latest Blackfin silicon datasheets

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: update defconfig files
Mike Frysinger [Wed, 21 Nov 2007 08:23:51 +0000]
Blackfin arch: update defconfig files

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Fix typo, and add ENDPROC - no functional changes
Mike Frysinger [Wed, 21 Nov 2007 08:15:48 +0000]
Blackfin arch: Fix typo, and add ENDPROC - no functional changes

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: convert READY to DMA_READY as it causes build errors in common sound...
Mike Frysinger [Wed, 21 Nov 2007 08:17:11 +0000]
Blackfin arch: convert READY to DMA_READY as it causes build errors in common sound code otherwise

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: add defines for the on-chip L1 ROM of BF54x
Mike Frysinger [Wed, 21 Nov 2007 08:14:03 +0000]
Blackfin arch: add defines for the on-chip L1 ROM of BF54x

Should not need separate cplb entry though as we cover L1 with a 4 meg page

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: cplb and map header file cleanup
Mike Frysinger [Wed, 21 Nov 2007 08:12:12 +0000]
Blackfin arch: cplb and map header file cleanup

 - remove duplicated defines for the BF561
 - generalize L2 support (so that it works for BF54x) and mark it executable
 - add support for reading/executing the Boot ROM sections
   (since it has data/functions we may need at runtime)
 - and fixup names for each map

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: cleanup the cplb declares
Mike Frysinger [Wed, 21 Nov 2007 07:55:45 +0000]
Blackfin arch: cleanup the cplb declares

 - no need to declare their sizes in the common header
 - no need to tack on the section attribute as only the definition matters, not references

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix broken on BF52x, remove silly checks on processors for L1_SCRATCH...
Mike Frysinger [Wed, 21 Nov 2007 07:57:53 +0000]
Blackfin arch: fix broken on BF52x, remove silly checks on processors for L1_SCRATCH defines

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: add support for working around anomaly 05000312
Mike Frysinger [Wed, 21 Nov 2007 08:08:58 +0000]
Blackfin arch: add support for working around anomaly 05000312

Anomaly 05000312 - Errors When SSYNC, CSYNC, or Loads to LT, LB and LC Registers Are Interrupted:

DESCRIPTION:
When instruction cache is enabled, erroneous behavior may occur when any of the following instructions are interrupted:

. CSYNC
• SSYNC
• LCx =
• LTx = (only when LCx is non-zero)
• LBx = (only when LCx is non-zero)

When this problem occurs, a variety of incorrect things could happen, including an illegal instruction exception. Additional errors could
show up as an exception, a hardware error, or an instruction that is valid but different than the one that was expected.

WORKAROUND:
Place a cli before all SSYNC, CSYNC, "LCx =", "LTx =", and "LBx =" instructions to disable interrupts, and place an sti after each of these
instructions to re-enable interrupts. When these instructions are executed in code that is already non-interruptible, the problem will not
occur.

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: cleanup BF54x header file and add BF547 definition
Mike Frysinger [Wed, 21 Nov 2007 08:04:49 +0000]
Blackfin arch: cleanup BF54x header file and add BF547 definition

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix building for BF542 processors which only have 1 TWI
Mike Frysinger [Wed, 21 Nov 2007 08:03:07 +0000]
Blackfin arch: fix building for BF542 processors which only have 1 TWI

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: rename _return_from_exception to _bfin_return_from_exception and export it
Mike Frysinger [Wed, 21 Nov 2007 07:53:49 +0000]
Blackfin arch: rename _return_from_exception to _bfin_return_from_exception and export it

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: move EXPORT_SYMBOL() to C files where the symbol is actually defined
Mike Frysinger [Wed, 21 Nov 2007 07:34:51 +0000]
Blackfin arch: move EXPORT_SYMBOL() to C files where the symbol is actually defined

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix bug NOR Flash MTD mount fail
Sonic Zhang [Wed, 21 Nov 2007 15:49:52 +0000]
Blackfin arch: fix bug NOR Flash MTD mount fail

Config EBIU flash mode properly. EBIU_MODE EBIU_FCTL
EBIU_MBSCTL register should be configurd to Flash
mode.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: export symbol get_dma_curr_desc_ptr for driver usage
Cliff Cai [Wed, 21 Nov 2007 07:22:58 +0000]
Blackfin arch: export symbol get_dma_curr_desc_ptr for driver usage

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: cleanup kernel exception message, don't insult the customer.
Robin Getz [Sat, 17 Nov 2007 16:35:33 +0000]
Blackfin arch: cleanup kernel exception message, don't insult the customer.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix bug kernel not to boot up with mtd filesystems
Bernd Schmidt [Sat, 17 Nov 2007 16:09:49 +0000]
Blackfin arch: fix bug kernel not to boot up with mtd filesystems

Revert this patch:
move the init sections to the end of memory, so that after they
are free, run time memory is all continugous - this should help decrease
memory fragementation. When doing this, we also pack some of the other
sections a little closer together, to make sure we don't waste memory.
To make this happen, we need to rename the .data.init_task section to
.init_task.data, so it doesn't get picked up by the linker script glob.

Since it causes the kernel not to boot up with mtd filesystems.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: More explicitly describe what the instructions do in inline assembly.
Jie Zhang [Sat, 17 Nov 2007 16:00:10 +0000]
Blackfin arch: More explicitly describe what the instructions do in inline assembly.

Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: add AXIS AX88180 Gigabit Ethernet Hardware and Driver to board files
Michael Hennerich [Sat, 17 Nov 2007 15:56:08 +0000]
Blackfin arch: add AXIS AX88180 Gigabit Ethernet Hardware and Driver to board files

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: print out modules that are loaded if we get a kernel oops
Robin Getz [Sat, 17 Nov 2007 16:20:49 +0000]
Blackfin arch: print out modules that are loaded if we get a kernel oops

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Add assembly function insl_16
Michael Hennerich [Sat, 17 Nov 2007 15:46:58 +0000]
Blackfin arch: Add assembly function insl_16

/*
 * CPUs often take a performance hit when accessing unaligned memory
 * locations. The actual performance hit varies, it can be small if the
 * hardware handles it or large if we have to take an exception and fix
 * it
 * in software.
 *
 * Since an ethernet header is 14 bytes network drivers often end up
 * with
 * the IP header at an unaligned offset. The IP header can be aligned by
 * shifting the start of the packet by 2 bytes. Drivers should do this
 * with:
 *
 * skb_reserve(NET_IP_ALIGN);
 *
 * The downside to this alignment of the IP header is that the DMA is
 * now
 * unaligned. On some architectures the cost of an unaligned DMA is high
 * and this cost outweighs the gains made by aligning the IP header.
 *
 * Since this trade off varies between architectures, we allow
 * NET_IP_ALIGN
 * to be overridden.
 */

This new function insl_16 allows to read form 32-bit IO and writes to
16-bit aligned memory. This is useful in above described scenario -
In particular with the AXIS AX88180 Gigabit Ethernet MAC.
Once the device is in 32-bit mode, reads from the RX FIFO always
decrements 4bytes.
While on the other side the destination address in SDRAM is always
16-bit aligned.
If we use skb_reserve(0) the receive buffer is 32-bit aligned but later
we hit a unaligned exception in the IP code.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: use do_div() for the 64bit division as pointed out by Bernd
Mike Frysinger [Fri, 23 Nov 2007 03:28:11 +0000]
Blackfin arch: use do_div() for the 64bit division as pointed out by Bernd

If you need a 64 bit divide in the kernel, use asm/div64.h.
Revert the addition of udivdi3.

Cc: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix spurious newline in header
Mike Frysinger [Sat, 17 Nov 2007 15:24:07 +0000]
Blackfin arch: fix spurious newline in header

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: unexport get_wchan
Adrian Bunk [Sat, 17 Nov 2007 15:05:06 +0000]
Blackfin arch: unexport get_wchan

The only user of get_wchan I was able to find is the proc fs - and proc
can't be built modular.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: remove dump_thread()
Adrian Bunk [Sat, 17 Nov 2007 16:41:56 +0000]
Blackfin arch: remove dump_thread()

The only user is the a.out support.

It was therefore removed prior to the blackfin merge from all
architectures not supporting a.out.

Currently, Blackfin doesn't suppport a.out.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Typo: "CONFIG_RTC_BFIN_MODULE" -> "CONFIG_RTC_DRV_BFIN_MODULE"
Robert P. J. Day [Sat, 17 Nov 2007 14:57:03 +0000]
Blackfin arch: Typo: "CONFIG_RTC_BFIN_MODULE" -> "CONFIG_RTC_DRV_BFIN_MODULE"

i'm *reasonably* confident that this is a typo that should be fixed.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Dont use cs_change_per_word, since the AD7877 driver doesnt require...
Michael Hennerich [Thu, 15 Nov 2007 13:33:31 +0000]
Blackfin arch: Dont use cs_change_per_word, since the AD7877 driver doesnt require it anymore; fix bus numbers, fix typos

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: relocate linux/usb_isp1362.h to linux/usb/isp1362.h like in newer...
Mike Frysinger [Thu, 15 Nov 2007 13:29:15 +0000]
Blackfin arch: relocate linux/usb_isp1362.h to linux/usb/isp1362.h like in newer linux trees

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: the usb_sl811.h header has been moved to usb/sl811.h so lets use that...
Mike Frysinger [Thu, 15 Nov 2007 13:25:47 +0000]
Blackfin arch: the usb_sl811.h header has been moved to usb/sl811.h so lets use that version now

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: do not include linux/autoconf.h
Mike Frysinger [Thu, 15 Nov 2007 13:22:53 +0000]
Blackfin arch: do not include linux/autoconf.h

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: change get_bf537_ether_addr() to bfin_get_ether_addr() since this...
Mike Frysinger [Thu, 15 Nov 2007 13:21:20 +0000]
Blackfin arch: change get_bf537_ether_addr() to bfin_get_ether_addr() since this is not BF537 specific and to better match other Blackfin-specific conventions

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: sharing the board-specific MAC function does not make sense so move...
Mike Frysinger [Thu, 22 Nov 2007 08:07:03 +0000]
Blackfin arch: sharing the board-specific MAC function does not make sense so move it into board-specific files

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix double fault definition for BF561 core A and core B
Mike Frysinger [Thu, 15 Nov 2007 13:15:47 +0000]
Blackfin arch: fix double fault definition for BF561 core A and core B

VDSP has double fault on core a/b inverted for BF561 -- bit 11 is core a while bit 12 is core b

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: remove useless CONFIG_IRQCHIP_DEMUX_GPIO
Mike Frysinger [Thu, 15 Nov 2007 13:12:32 +0000]
Blackfin arch: remove useless CONFIG_IRQCHIP_DEMUX_GPIO

since we have this always turned on now and dont want it off (and hasnt been an option in a while)

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix missing newline to file
Mike Frysinger [Thu, 15 Nov 2007 13:10:42 +0000]
Blackfin arch: fix missing newline to file

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: add BF547 to list of accepted procs
Mike Frysinger [Thu, 15 Nov 2007 13:10:21 +0000]
Blackfin arch: add BF547 to list of accepted procs

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: move the init sections to the end of memory to help decrease memory...
Robin Getz [Thu, 15 Nov 2007 12:57:53 +0000]
Blackfin arch: move the init sections to the end of memory to help decrease memory fragementation

move the init sections to the end of memory, so that after they
are free, run time memory is all continugous - this should help decrease
memory fragementation. When doing this, we also pack some of the other
sections a little closer together, to make sure we don't waste memory.
To make this happen, we need to rename the .data.init_task section to
.init_task.data, so it doesn't get picked up by the linker script glob.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: split debug stuff off into Kconfig.debug like everyone else
Mike Frysinger [Wed, 21 Nov 2007 15:50:49 +0000]
Blackfin arch: split debug stuff off into Kconfig.debug like everyone else

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: punt CONFIG_BFIN -- we already have CONFIG_BLACKFIN
Mike Frysinger [Fri, 23 Nov 2007 06:28:44 +0000]
Blackfin arch: punt CONFIG_BFIN -- we already have CONFIG_BLACKFIN

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix indentation -- use tabs, not spaces
Mike Frysinger [Thu, 15 Nov 2007 12:39:34 +0000]
Blackfin arch: fix indentation -- use tabs, not spaces

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: split board selection off into mach subdirs
Mike Frysinger [Thu, 15 Nov 2007 12:49:44 +0000]
Blackfin arch: split board selection off into mach subdirs

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix silicon rev display and selection for BF52x/BF54x
Mike Frysinger [Thu, 15 Nov 2007 07:49:17 +0000]
Blackfin arch: fix silicon rev display and selection for BF52x/BF54x

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: add a compatible DOUBLE_FAULT define to enable resets on double faults...
Mike Frysinger [Mon, 12 Nov 2007 16:31:33 +0000]
Blackfin arch: add a compatible DOUBLE_FAULT define to enable resets on double faults in either core

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: remove mention of uClinux/no-mmu ... we are just Blackfin Linux
Mike Frysinger [Thu, 15 Nov 2007 07:48:01 +0000]
Blackfin arch: remove mention of uClinux/no-mmu ... we are just Blackfin Linux

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: Default config for HV Sistemas H8606 board
Javier Herrero [Thu, 15 Nov 2007 07:45:33 +0000]
Blackfin arch: Default config for HV Sistemas H8606 board

Signed-off-by: Javier Herrero <jherrero@hvsistemas.es>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix bug cplbmgr.S does not exit properly on error condition
Robin Getz [Thu, 15 Nov 2007 07:10:48 +0000]
Blackfin arch: fix bug cplbmgr.S does not exit properly on error condition

https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=1685

Ensure that cache/protection is turned back on when we get a
fault, and ensure that the initial population of the CPLB tables are
correct - that kernel is locked in CPLB tables

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix AD7877 bus_num and add support for WM8731 SPI control interface
Michael Hennerich [Mon, 12 Nov 2007 16:16:19 +0000]
Blackfin arch: fix AD7877 bus_num and add support for WM8731 SPI control interface

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: move hard coded pin_req to board file
Bryan Wu [Mon, 12 Nov 2007 15:24:42 +0000]
Blackfin arch: move hard coded pin_req to board file

Remove some sort of bloaty code, try to get these pin_req arrays built at compile-time

 - move this static things to the blackfin board file
 - add pin_req array to struct bfin5xx_spi_master
 - tested on BF537/BF548 with SPI flash

Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: fix bux - only reset the PC when necessary, otherwise gdb gets confused
Robin Getz [Mon, 12 Nov 2007 14:46:46 +0000]
Blackfin arch: fix bux - only reset the PC when necessary, otherwise gdb gets confused

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoBlackfin arch: ensure we work around ANOMALY_05000261 for null pointers
Robin Getz [Mon, 12 Nov 2007 14:21:30 +0000]
Blackfin arch: ensure we work around ANOMALY_05000261 for null pointers

 We currently do not. Also make it easier to handle cplb violations - in traps.c

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

13 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux...
Linus Torvalds [Sat, 17 Nov 2007 16:36:10 +0000]
Merge branch 'master' of git://git./linux/kernel/git/x86/linux-2.6-x86

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: simplify "make ARCH=x86" and fix kconfig all.config
  x86: reboot fixup for wrap2c board
  x86: check boundary in count setup resource
  x86: fix reboot with no keyboard attached
  x86: add hpet sanity checks
  x86: on x86_64, correct reading of PC RTC when update in progress in time_64.c
  x86: fix freeze in x86_64 RTC update code in time_64.c
  ntp: fix typo that makes sync_cmos_clock erratic
  Remove x86 merge artifact from top Makefile
  x86: fixup cpu_info array conversion
  x86: show cpuinfo only for online CPUs
  x86: fix cpu-hotplug regression
  x86: ignore the sys_getcpu() tcache parameter
  x86: voyager use correct header file name
  x86: fix smp init sections
  x86: fix voyager_cat_init section
  x86: fix bogus memcpy in es7000_check_dsdt()

13 years agox86: simplify "make ARCH=x86" and fix kconfig all.config
Sam Ravnborg [Sat, 17 Nov 2007 14:37:31 +0000]
x86: simplify "make ARCH=x86" and fix kconfig all.config

Simplify "make ARCH=x86" and fix kconfig so we again can set 64BIT in
all.config.

For a fix the diffstat is nice:
 6 files changed, 3 insertions(+), 36 deletions(-)

The patch reverts these commits:
 - 0f855aa64b3f63d35a891510cf7db932a435c116 ("kconfig: add helper to set
   config symbol from environment variable")
 - 2a113281f5cd2febbab21a93c8943f8d3eece4d3 ("kconfig: use $K64BIT to
   set 64BIT with all*config targets")

Roman Zippel pointed out that kconfig supported string compares so
the additional complexity introduced by the above two patches were
not needed.

With this patch we have following behaviour:

  # make {allno,allyes,allmod,rand}config [ARCH=...]
  option \ host arch      | 32bit         | 64bit
  =====================================================
  ./.                     | 32bit         | 64bit
  ARCH=x86                | 32bit         | 32bit
  ARCH=i386               | 32bit         | 32bit
  ARCH=x86_64             | 64bit         | 64bit

The general rule are that ARCH= and native architecture takes
precedence over the configuration.

So make ARCH=i386 [whatever] will always build a 32-bit kernel
no matter what the configuration says.  The configuration will
be updated to 32-bit if it was configured to 64-bit and the
other way around.

This behaviour is consistent with previous behaviour so no
suprises here.

make ARCH=x86 will per default result in a 32-bit kernel but as
the only ARCH= value x86 allow the user to select between 32-bit
and 64-bit using menuconfig.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andreas Herrmann <aherrman@arcor.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86: simplify "make ARCH=x86" and fix kconfig all.config
Sam Ravnborg [Sat, 17 Nov 2007 14:37:31 +0000]
x86: simplify "make ARCH=x86" and fix kconfig all.config

Simplify "make ARCH=x86" and fix kconfig so we again
can set 64BIT in all.config.

For a fix the diffstat is nice:
 6 files changed, 3 insertions(+), 36 deletions(-)

The patch reverts these commits:
0f855aa64b3f63d35a891510cf7db932a435c116
-> kconfig: add helper to set config symbol from environment variable

2a113281f5cd2febbab21a93c8943f8d3eece4d3
-> kconfig: use $K64BIT to set 64BIT with all*config targets

Roman Zippel pointed out that kconfig supported string
compares so the additional complexity introduced by the
above two patches were not needed.

With this patch we have following behaviour:

# make {allno,allyes,allmod,rand}config [ARCH=...]
option \ host arch      | 32bit         | 64bit
=====================================================
./.                     | 32bit         | 64bit
ARCH=x86                | 32bit         | 32bit
ARCH=i386               | 32bit         | 32bit
ARCH=x86_64             | 64bit         | 64bit

The general rule are that ARCH= and native architecture
takes precedence over the configuration.
So make ARCH=i386 [whatever] will always build a 32-bit
kernel no matter what the configuration says.
The configuration will be updated to 32-bit if it was
configured to 64-bit and the other way around.

This behaviour is consistent with previous behaviour so
no suprises here.

make ARCH=x86 will per default result in a 32-bit kernel
but as the only ARCH= value x86 allow the user to select
between 32-bit and 64-bit using menuconfig.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andreas Herrmann <aherrman@arcor.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>

13 years agox86: reboot fixup for wrap2c board
Denys [Sat, 17 Nov 2007 15:27:02 +0000]
x86: reboot fixup for wrap2c board

Needed to make the wireless board, WRAP2C reboot.

Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: check boundary in count setup resource
Yinghai Lu [Sat, 17 Nov 2007 15:27:01 +0000]
x86: check boundary in count setup resource

need to check info->res_num less than PCI_BUS_NUM_RESOURCES, so
info->bus->resource[info->res_num] = res will not beyond of bus resource
array when acpi returns too many resource entries.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Gary Hade <gary.hade@us.ibm.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix reboot with no keyboard attached
Truxton Fulton [Sat, 17 Nov 2007 15:27:01 +0000]
x86: fix reboot with no keyboard attached

Attempt to fix http://bugzilla.kernel.org/show_bug.cgi?id=8378

Hiroto Shibuya wrote to tell me that he has a VIA EPIA-EK10000 which
suffers from the reboot problem when no keyboard is attached.  My first
patch works for him:

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=59f4e7d572980a521b7bdba74ab71b21f5995538

But the latest patch does not work for him :

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8b93789808756bcc1e5c90c99f1b1ef52f839a51

We found that it was necessary to also set the "disable keyboard" flag in
the command byte, as the first patch was doing.  The second patch tries to
minimally modify the command byte, but it is not enough.

Please consider this simple one-line patch to help people with low end VIA
motherboards reboot when no keyboard is attached.  Hiroto Shibuya has
verified that this works for him (as I no longer have an afflicted
machine).

Additional discussion:

Note that original patch from Truxton DOES
disable keyboard and this has been in main tree since 2.6.14, thus it must have
quite a bit of air time already.

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.14.y.git;a=commit;h=59f4e7d572980a521b7bdba74ab71b21f5995538

Note that he only mention "System flag" in the description and comment, but
in the code, "disable keyboard" flag is set.

  outb(0x14, 0x60);       /* set "System flag" */

In 2.6.23, he made a change to read the current byte and then mask the flags,
but along this change,  he only set the "System flag" and dropped the setting
of "disable keyboard" flag.

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.23.y.git;a=commit;h=8b93789808756bcc1e5c90c99f1b1ef52f839a51

   outb(cmd | 0x04, 0x60); /* set "System flag" */

So my request is to restore the setting of disable keyboard flag which has been
there since 2.6.14 but disappeared in 2.6.23.

Cc: Lee Garrett <lee-in-berlin@web.de>
Cc: "Hiroto Shibuya" <hiroto.shibuya@gmail.com>
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Aristeu Rozanski <aris@ruivo.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: add hpet sanity checks
Thomas Gleixner [Fri, 16 Nov 2007 02:41:50 +0000]
x86: add hpet sanity checks

Some BIOSes advertise HPET at 0x0. We really do no want to
allocate a resource there. Check for it and leave early.

Other BIOSes tell us the HPET is at 0xfed0000000000000
instead of 0xfed00000. Add a check and fix it up with a warning
on user request.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: on x86_64, correct reading of PC RTC when update in progress in time_64.c
David P. Reed [Thu, 15 Nov 2007 01:14:50 +0000]
x86: on x86_64, correct reading of PC RTC when update in progress in time_64.c

Correct potentially unstable PC RTC time register reading in time_64.c

Stop the use of an incorrect technique for reading the standard PC RTC
timer, which is documented to "disconnect" time registers from the bus
while updates are in progress.  The use of UIP flag while interrupts
are disabled to protect a 244 microsecond window is one of the
Motorola spec sheet's documented ways to read the RTC time registers
reliably.

tglx: removed locking changes from original patch, as they gain nothing
(read_persistent_clock is only called during boot, suspend, resume - so
no hot path affected) and conflict with the paravirt locking scheme
(see 32bit code), which we do not want to complicate for no benefit.

Signed-off-by: David P. Reed <dpreed@reed.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix freeze in x86_64 RTC update code in time_64.c
David P. Reed [Wed, 14 Nov 2007 22:47:35 +0000]
x86: fix freeze in x86_64 RTC update code in time_64.c

Fix hard freeze on x86_64 when the ntpd service calls
update_persistent_clock()

A repeatable but randomly timed freeze has been happening in Fedora 6
and 7 for the last year, whenever I run the ntpd service on my AMD64x2
HP Pavilion dv9000z laptop.  This freeze is due to the use of
spin_lock(&rtc_lock) under the assumption (per a bad comment) that
set_rtc_mmss is called only with interrupts disabled.  The call from
ntp.c to update_persistent_clock is made with interrupts enabled.

Signed-off-by: David P. Reed <dpreed@reed.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agontp: fix typo that makes sync_cmos_clock erratic
David P. Reed [Wed, 14 Nov 2007 22:49:21 +0000]
ntp: fix typo that makes sync_cmos_clock erratic

Fix a typo in ntp.c that has caused updating of the persistent (RTC)
clock when synced to NTP to behave erratically.

When debugging a freeze that arises on my AMD64 machines when I
run the ntpd service, I added a number of printk's to monitor the
sync_cmos_clock procedure.  I discovered that it was not syncing to
cmos RTC every 11 minutes as documented, but instead would keep trying
every second for hours at a time.  The reason turned out to be a typo
in sync_cmos_clock, where it attempts to ensure that
update_persistent_clock is called very close to 500 msec. after a 1
second boundary (required by the PC RTC's spec). That typo referred to
"xtime" in one spot, rather than "now", which is derived from "xtime"
but not equal to it.  This makes the test erratic, creating a
"coin-flip" that decides when update_persistent_clock is called - when
it is called, which is rarely, it may be at any time during the one
second period, rather than close to 500 msec, so the value written is
needlessly incorrect, too.

Signed-off-by: David P. Reed
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agoRemove x86 merge artifact from top Makefile
Thomas Gleixner [Thu, 15 Nov 2007 06:11:12 +0000]
Remove x86 merge artifact from top Makefile

The x86 merge modified the tags target to handle the two separate
source directories. Remove it now that i386/x86_64 are gone completely.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fixup cpu_info array conversion
Thomas Gleixner [Sat, 17 Nov 2007 12:18:42 +0000]
x86: fixup cpu_info array conversion

92cb7612aee39642d109b8d935ad265e602c0563 sets cpu_info->cpu_index to zero
for no reason. Referencing cpu_info->cpu_index now points always to CPU#0,
which is apparently not what we want.

Remove it.

Spotted-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: show cpuinfo only for online CPUs
Andreas Herrmann [Thu, 1 Nov 2007 18:32:17 +0000]
x86: show cpuinfo only for online CPUs

Fix regressions introduced with 92cb7612aee39642d109b8d935ad265e602c0563.

It can happen that cpuinfo is displayed for CPUs that are not online or
even worse for CPUs not present at all. As an example, following was
shown for a "second" CPU of a single core K8 variant:

    processor       : 0
    vendor_id       : unknown
    cpu family      : 0
    model           : 0
    model name      : unknown
    stepping        : 0
    cache size      : 0 KB
    fpu             : yes
    fpu_exception   : yes
    cpuid level     : 0
    wp              : yes
    flags           :
    bogomips        : 0.00
    clflush size    : 0
    cache_alignment : 0
    address sizes   : 0 bits physical, 0 bits virtual
    power management:

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix cpu-hotplug regression
Andreas Herrmann [Wed, 7 Nov 2007 01:12:58 +0000]
x86: fix cpu-hotplug regression

Commit d435d862baca3e25e5eec236762a43251b1e7ffc
("cpu hotplug: mce: fix cpu hotplug error handling")
changed the error handling in mce_cpu_callback.

In cases where not all CPUs are brought up during
boot (e.g. using maxcpus and additional_cpus parameters)
mce_cpu_callback now returns NOTFIY_BAD because
for such CPUs cpu_data is not completely filled when
the notifier is called. Thus mce_create_device fails right
at its beginning:

        if (!mce_available(&cpu_data[cpu]))
                return -EIO;

As a quick fix I suggest to check boot_cpu_data for MCE.

To reproduce this regression:

(1) boot with maxcpus=2 addtional_cpus=2 on a 4 CPU x86-64 system
(2) # echo 1 >/sys/devices/system/cpu/cpu2/online
  -bash: echo: write error: Invalid argument

dmesg shows:

_cpu_up: attempt to bring up CPU 2 failed

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: ignore the sys_getcpu() tcache parameter
Ingo Molnar [Wed, 7 Nov 2007 17:37:48 +0000]
x86: ignore the sys_getcpu() tcache parameter

dont use the vgetcpu tcache - it's causing problems with tasks
migrating, they'll see the old cache up to a jiffy after the
migration, further increasing the costs of the migration.

In the worst case they see a complete bogus information from
the tcache, when a sys_getcpu() call "invalidated" the cache
info by incrementing the jiffies _and_ the cpuid info in the
cache and the following vdso_getcpu() call happens after
vdso_jiffies have been incremented.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: voyager use correct header file name
Randy Dunlap [Mon, 12 Nov 2007 05:06:02 +0000]
x86: voyager use correct header file name

Fix header file name for Voyager build.

In file included from arch/x86/kernel/setup_32.c:61:
include/asm-x86/mach-voyager/setup_arch.h:2:26: error: asm/setup_32.h: No such file or directory
make[1]: *** [arch/x86/kernel/setup_32.o] Error 1

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix smp init sections
Randy Dunlap [Mon, 12 Nov 2007 05:06:45 +0000]
x86: fix smp init sections

Fix Voyager section mismatch due to using __devinit instead of __cpuinit.

WARNING: vmlinux.o(.text+0xd943): Section mismatch: reference to .init.text:init_gdt (between 'voyager_smp_prepare_boot_cpu' and 'smp_vic_cmn_interrupt')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix voyager_cat_init section
Randy Dunlap [Mon, 12 Nov 2007 05:06:23 +0000]
x86: fix voyager_cat_init section

Fix Voyager section mismatches:  voyager_cat_init() should be __init.

WARNING: vmlinux.o(.text+0xee83): Section mismatch: reference to .init.data:eprom_buf (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xeea6): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xeeac): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xeeb2): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xef4c): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xef56): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf10f): Section mismatch: reference to .init.data:eprom_buf (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf13b): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf14b): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf159): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf1b1): Section mismatch: reference to .init.data:eprom_buf (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf1bb): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf1c1): Section mismatch: reference to .init.data:eprom_buf (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf1c7): Section mismatch: reference to .init.data:eprom_buf (between 'voyager_cat_init' and 'aes_enc_blk')
WARNING: vmlinux.o(.text+0xf1e6): Section mismatch: reference to .init.data: (between 'voyager_cat_init' and 'aes_enc_blk')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agox86: fix bogus memcpy in es7000_check_dsdt()
Thomas Gleixner [Wed, 14 Nov 2007 12:20:48 +0000]
x86: fix bogus memcpy in es7000_check_dsdt()

es7000_check_dst() contains a memcpy from 0, which probably should have been
a memset. Remove it and check the retunr value from acpi_get_table_header.

Noticed by: Joe Perches <joe@perches.com>

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

13 years agoLinux 2.6.24-rc3
Linus Torvalds [Sat, 17 Nov 2007 05:16:36 +0000]
Linux 2.6.24-rc3

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sat, 17 Nov 2007 02:32:28 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  SELinux: return EOPNOTSUPP not ENOTSUPP

13 years agoMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Sat, 17 Nov 2007 02:32:08 +0000]
Merge branch 'for-linus' of /home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4638/1: pxa: use PXA3xx specific macros to define clks
  [ARM] remove useless setting of VM_RESERVED

13 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Sat, 17 Nov 2007 02:30:26 +0000]
Merge /pub/scm/linux/kernel/git/davej/cpufreq

* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix up whitespace in conservative governor.
  [CPUFREQ] Make cpufreq_conservative handle out-of-sync events properly
  [CPUFREQ] architectural pstate driver for powernow-k8

13 years agoSELinux: return EOPNOTSUPP not ENOTSUPP
Eric Paris [Fri, 16 Nov 2007 21:35:56 +0000]
SELinux: return EOPNOTSUPP not ENOTSUPP

ENOTSUPP is not a valid error code in the kernel (it is defined in some
NFS internal error codes and has been improperly used other places).  In
the !CONFIG_SECURITY_SELINUX case though it is possible that we could
return this from selinux_audit_rule_init().  This patch just returns the
userspace valid EOPNOTSUPP.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

13 years ago[ARM] 4638/1: pxa: use PXA3xx specific macros to define clks
eric miao [Tue, 30 Oct 2007 07:10:18 +0000]
[ARM] 4638/1: pxa: use PXA3xx specific macros to define clks

PXA3xx uses its own clk_pxa3xx_cken_ops, modify the code to use the
PXA3xx specific macros to define its clocks

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

13 years agodirty page balancing: Get rid of broken unmapped_ratio logic
Linus Torvalds [Fri, 16 Nov 2007 00:41:52 +0000]
dirty page balancing: Get rid of broken unmapped_ratio logic

This code harks back to the days when we didn't count dirty mapped
pages, which led us to try to balance the number of dirty unmapped pages
by how much unmapped memory there was in the system.

That makes no sense any more, since now the dirty counts include the
mapped pages.  Not to mention that the math doesn't work with HIGHMEM
machines anyway, and causes the unmapped_ratio to potentially turn
negative (which we do catch thanks to clamping it at a minimum value,
but I mention that as an indication of how broken the code is).

The code also was written at a time when the default dirty ratio was
much larger, and the unmapped_ratio logic effectively capped that large
dirty ratio a bit.  Again, we've since lowered the dirty ratio rather
aggressively, further lessening the point of that code.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 16 Nov 2007 00:34:00 +0000]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NETFILTER]: Fix NULL pointer dereference in nf_nat_move_storage()
  [SUNHME]: VLAN support for sunhme
  [CHELSIO]: Fix skb->dev setting.
  [NETFILTER]: fix compat_nf_sockopt typo
  [INET]: Fix potential kfree on vmalloc-ed area of request_sock_queue
  [VIA_VELOCITY]: Don't oops on MTU change.
  iwl4965: fix not correctly dealing with hotunplug
  rt2x00: Fix chipset revision validation
  iwl3945: place CCK rates in front of OFDM for supported rates
  mac80211: Fix queuing of scan containing a SSID

13 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Fri, 16 Nov 2007 00:08:49 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] N32 needs to use the compat version of sys_nfsservctl.
  [MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts.
  [MIPS] Sibyte: Fix name of clocksource.
  [MIPS] SNI: s/achknowledge/acknowledge/
  [MIPS] Makefile: Fix canonical system names
  [MIPS] vpe: handle halting TCs in an errata safe way.
  [MIPS] Sibyte: Stop timers before programming next even.
  [MIPS] Sibyte: Increase minimum oneshot timer interval to two ticks.
  [MIPS] Lasat: Fix overlap of interrupt number ranges.
  [MIPS] SNI PCIT CPLUS: workaround for b0rked irq wiring of onboard PCI bus 1
  [MIPS] Fix shadow register support.
  [MIPS] Change get_cycles to always return 0.
  [MIPS] Fix typo in R3000 TRACE_IRQFLAGS code
  [MIPS] Sibyte: Replace use of removed IO_SPACE_BASE with IOADDR.
  [MIPS] iounmap if in vr41xx_pciu_init() pci clock is over 33MHz
  [MIPS] BCM1480: Remove duplicate acknowledge of timer interrupt.
  [MIPS] Sibyte: pin timer interrupt to their cores.
  [MIPS] Qemu: Add early printk, your friend in a cold night.
  [MIPS] Convert reference to mem_map to pfn_to_page().
  [MIPS] Sibyte: resurrect old cache hack.

13 years ago[NETFILTER]: Fix NULL pointer dereference in nf_nat_move_storage()
Evgeniy Polyakov [Thu, 15 Nov 2007 23:52:32 +0000]
[NETFILTER]: Fix NULL pointer dereference in nf_nat_move_storage()

Reported by Chuck Ebbert as:

https://bugzilla.redhat.com/show_bug.cgi?id=259501#c14

This routine is called each time hash should be replaced, nf_conn has
extension list which contains pointers to connection tracking users
(like nat, which is right now the only such user), so when replace takes
place it should copy own extensions. Loop above checks for own
extension, but tries to move higer-layer one, which can lead to above
oops.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

13 years ago[SUNHME]: VLAN support for sunhme
Chris Poon [Thu, 15 Nov 2007 23:38:45 +0000]
[SUNHME]: VLAN support for sunhme

This patch enables VLAN support on sunhme by increasing BMAC_TXMAX/BMAC_RXMAX
and allocating extra space via skb_put for the VLAN header.

Signed-off-by: Chris Poon <dev-null@telus.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

13 years ago[MIPS] N32 needs to use the compat version of sys_nfsservctl.
Ralf Baechle [Thu, 15 Nov 2007 22:20:33 +0000]
[MIPS] N32 needs to use the compat version of sys_nfsservctl.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts.
Ralf Baechle [Thu, 15 Nov 2007 19:37:15 +0000]
[MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts.

This matters to any sort of device that is wired to one of the CPU
interrupt pins on an SMP system.  Typically the scenario is most easily
triggered with the count/compare timer interrupt where the same interrupt
number and thus irq_desc is used on each processor.

   CPU A CPU B

   do_IRQ()
   generic_handle_irq()
   handle_level_irq()
   spin_lock(desc_lock)
   set IRQ_INPROGRESS
   spin_unlock(desc_lock)
do_IRQ()
generic_handle_irq()
handle_level_irq()
spin_lock(desc_lock)
IRQ_INPROGRESS set => bail out
   spin_lock(desc_lock)
   clear IRQ_INPROGRESS
   spin_unlock(desc_lock)

In case of the cp0 compare interrupt this means the interrupt will be
acked and not handled or re-armed on CPU b, so there won't be any timer
interrupt until the count register wraps around.

With kernels 2.6.20 ... 2.6.23 we usually were lucky that things were just
working right on VSMP because the count registers are synchronized on
bootup so it takes something that disables interrupts for a long time on
one processor to trigger this one.

For scenarios where an interrupt is multicasted or broadcasted over several
CPUs the existing code was safe and the fix will break it.  There is no
way to know in the interrupt controller code because it is abstracted from
the platform code.  I think we do not have such a setup currently, so this
should be ok.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Sibyte: Fix name of clocksource.
Ralf Baechle [Tue, 13 Nov 2007 00:35:13 +0000]
[MIPS] Sibyte: Fix name of clocksource.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] SNI: s/achknowledge/acknowledge/
Maciej W. Rozycki [Mon, 12 Nov 2007 17:32:48 +0000]
[MIPS] SNI: s/achknowledge/acknowledge/

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Makefile: Fix canonical system names
Maciej W. Rozycki [Mon, 12 Nov 2007 17:30:52 +0000]
[MIPS] Makefile: Fix canonical system names

The GNU `config.guess' uses "linux-gnu" as the canonical system name.
Fix the list of compiler prefixes checked to spell it correctly.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] vpe: handle halting TCs in an errata safe way.
Nigel Stephens [Thu, 8 Nov 2007 13:25:51 +0000]
[MIPS] vpe: handle halting TCs in an errata safe way.

Adds a JR.HB after halting a TC, to ensure that the TC has really halted.
only modifies the TCSTATUS register when the TC is safely halted.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Sibyte: Stop timers before programming next even.
Ralf Baechle [Sun, 11 Nov 2007 17:33:55 +0000]
[MIPS] Sibyte: Stop timers before programming next even.

We have no guarantee by the generic time code that the timer is stopped
when the ->next_event method is called.  Modifying the Timer Initial Count
register while the timer is enabled has UNPREDICTABLE effect according to
the BCM1250/BCM1125/BCM1125H User Manual.  So stop the timer before
reprogramming.

This is a paranoia fix; no ill effects have been observed previously.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Sibyte: Increase minimum oneshot timer interval to two ticks.
Ralf Baechle [Sun, 11 Nov 2007 17:24:46 +0000]
[MIPS] Sibyte: Increase minimum oneshot timer interval to two ticks.

For the old minimum of a single tick a value of zero would be programmed
into the init value register which in the BCM1250/BCM1125/BCM1125H User
Manual in the Timer Special Cases section is documented to have
UNPREDICTABLE effect.

Observable sympthoms of this bug were hangs of several seconds on the
console during bootup and later if both dyntick and highres timer options
were activated.

In theory contiguous mode of the timers is also affected but in an act of
hopeless lack of realism I'll assume nobody will ever configure a KERNEL
for HZ > 500kHz but if so I leave that to evolution to sort out.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Lasat: Fix overlap of interrupt number ranges.
Yoichi Yuasa [Fri, 9 Nov 2007 09:42:35 +0000]
[MIPS] Lasat: Fix overlap of interrupt number ranges.

The range of MIPS_CPU IRQ and the range of LASAT IRQ overlap.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] SNI PCIT CPLUS: workaround for b0rked irq wiring of onboard PCI bus 1
Thomas Bogendoerfer [Thu, 8 Nov 2007 21:09:11 +0000]
[MIPS] SNI PCIT CPLUS: workaround for b0rked irq wiring of onboard PCI bus 1

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Fix shadow register support.
Ralf Baechle [Thu, 8 Nov 2007 18:02:29 +0000]
[MIPS] Fix shadow register support.

Shadow register support would not possibly have worked on multicore
systems.  The support code for it was also depending not on MIPS R2 but
VSMP or SMTC kernels even though it makes perfect sense with UP kernels.

SR sets are a scarce resource and the expected usage pattern is that
users actually hardcode the register set numbers in their code.  So fix
the allocator by ditching it.  Move the remaining CPU probe bits into
the generic CPU probe.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Change get_cycles to always return 0.
Ralf Baechle [Thu, 8 Nov 2007 11:37:47 +0000]
[MIPS] Change get_cycles to always return 0.

This avoids us executing an mfc0 c0_count instruction on processors which
don't have but also on certain R4000 and R4400 versions where reading from
the count register just in the very moment when its value equals
c0_compare will result in the timer interrupt getting lost.

There is still a number of users of get_cycles remaining outside the
arch code:

crypto/tcrypt.c:                start = get_cycles();
crypto/tcrypt.c:                end = get_cycles();
crypto/tcrypt.c:                start = get_cycles();
crypto/tcrypt.c:                end = get_cycles();
crypto/tcrypt.c:                start = get_cycles();
crypto/tcrypt.c:                end = get_cycles();
drivers/char/hangcheck-timer.c: return get_cycles();
drivers/char/hangcheck-timer.c: printk("Hangcheck: Using get_cycles().\n");
drivers/char/random.c:  sample.cycles = get_cycles();
drivers/input/joystick/analog.c:#define GET_TIME(x)     do { x = get_cycles(); }
include/linux/arcdevice.h:          _x = get_cycles(); \
include/linux/arcdevice.h:          _y = get_cycles(); \
mm/slub.c:      if (!s->defrag_ratio || get_cycles() % 1024 > s->defrag_ratio)
mm/slub.c:      p += 64 + (get_cycles() & 0xff) * sizeof(void *);

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Fix typo in R3000 TRACE_IRQFLAGS code
Atsushi Nemoto [Tue, 6 Nov 2007 16:08:48 +0000]
[MIPS] Fix typo in R3000 TRACE_IRQFLAGS code

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] Sibyte: Replace use of removed IO_SPACE_BASE with IOADDR.
Ralf Baechle [Tue, 6 Nov 2007 00:43:51 +0000]
[MIPS] Sibyte: Replace use of removed IO_SPACE_BASE with IOADDR.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

13 years ago[MIPS] iounmap if in vr41xx_pciu_init() pci clock is over 33MHz
Roel Kluin [Sun, 4 Nov 2007 12:00:06 +0000]
[MIPS] iounmap if in vr41xx_pciu_init() pci clock is over 33MHz

iounmap if pci clock is over 33MHz.  Cosmetic because the iomap() in this
case is just a bit of address magic.

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Acked-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>