linux.git/drivers/block/cciss.c, branch v2.6.19

[PATCH] cciss: fix iostat

2006-11-14T23:08:50+00:00

cciss needs to call disk_stat_add() for iostat to work.

Signed-off-by: Jens Axboe 
Signed-off-by: Linus Torvalds

[PATCH] cciss: fix printk format warning

2006-10-28T18:30:53+00:00

Fix printk format warnings:
drivers/block/cciss.c:2000: warning: long long int format, long unsigned int arg (arg 2)
drivers/block/cciss.c:2035: warning: long long int format, long unsigned int arg (arg 2)

Signed-off-by: Randy Dunlap 
Acked-by: Mike Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cciss: Fix warnings (and bug on 1TB discs)

2006-10-21T20:35:06+00:00

CCISS was producing warnings about shifts being greater than the size of
the type and pointers being of incompatible type.  Turns out this is
because it's calling do_div on a 32-bit quantity.  Upon further
investigation, the sector_t total_size is being assigned to an int, and
then we're calling do_div on that int.  Obviously, sector_div is called for
here, and I took the chance to refactor the code a little.

Signed-off-by: Matthew Wilcox 
Acked-by: Mike Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12+00:00

Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells 
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

Remove all inclusions of

2006-10-04T07:38:54+00:00

kbuild explicitly includes this at build time.

Signed-off-by: Dave Jones

[PATCH] completions: lockdep annotate on stack completions

2006-10-01T07:39:24+00:00

All on stack DECLARE_COMPLETIONs should be replaced by:
DECLARE_COMPLETION_ONSTACK

Signed-off-by: Peter Zijlstra 
Acked-by: Ingo Molnar 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cciss: remove unneeded spaces in output for attached volumes

2006-10-01T07:39:22+00:00

It removes the awkwards spaces after the "=" when displaying the
geometry of the attached volumes.

Before:
cciss: using DAC cycles
     blocks= 286734240 block_size= 512
     heads= 255, sectors= 32, cylinders= 35139

After:
cciss: using DAC cycles
     blocks=286734240 block_size=512
     heads=255, sectors=32, cylinders=35139

Signed-off-by: Metathronius Galabant 
Acked-by: Mike Miller 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cciss: support for >2TB logical volumes

2006-10-01T07:39:20+00:00

Add support for logical volumes >2TB.  All SAS/SATA controllers support
large volumes.

Signed-off-by: Mike Miller 
Cc: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Kill various deprecated/unused block layer defines/functions

2006-09-30T18:29:38+00:00

Signed-off-by: Jens Axboe

[PATCH] cciss: version update, new hw

2006-09-13T14:32:16+00:00

Add support for new hardware and bumps the version to 3.6.10.  It seems
there were several changes introduced including soft_irq.  I decided to
bump the major number to reflect these changes.  Since we're still
supporting older vendor kernels I need some way differentiate between
kernel versions <=2.6.10 and newer kernels >=2.6.16.

Signed-off-by: Mike Miller 
Cc: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds