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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 <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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Fixed 'section mismatch' errors in ALSA PCI drivers:
- removed invalid __devinitdata from pci id tables
- fix/remove __devinit of functions called in suspend/resume
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fixed a typo in 'PC Speaker Playback Switch' control name.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Change the 5th argument of snd_mpu401_uart_new() to bit flags
instead of a boolean. The argument takes bits that consist of
MPU401_INFO_XXX flags.
The callers that used the value 1 there are replaced with
MPU401_INFO_INTEGRATED.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Enable the support of mpu401 PCI port only when mpu_port=1 module
option is given, i.e. disabled as default.
It turned out that the check of integrated midi port isn't perfect
and caused hang-ups on some boards.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: CMIPCI driver
Add PM support to CMIPCI driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: CMIPCI driver
Remove xxx_t typedefs from the PCI CMIPCI driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Remove superflous pcm_free callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add missing KERN_* suffix to printk.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- Remove vmalloc wrapper
- Add release_and_free_resource() to remove kfree_nocheck() from each driver
and simplify the code
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: CMIPCI driver
If possible, use ports in the card's PCI port address range instead of
the legacy ports.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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AD1889 driver,ALS4000 driver,ATIIXP driver,ATIIXP-modem driver
AZT3328 driver,BT87x driver,CMIPCI driver,CS4281 driver
ENS1370/1+ driver,ES1938 driver,ES1968 driver,FM801 driver
Intel8x0 driver,Intel8x0-modem driver,Maestro3 driver,RME32 driver
RME96 driver,SonicVibes driver,VIA82xx driver,VIA82xx-modem driver
ALI5451 driver,au88x0 driver,CS46xx driver,EMU10K1/EMU10K2 driver
HDA Intel driver,ICE1712 driver,ICE1724 driver,KORG1212 driver
MIXART driver,NM256 driver,RME HDSP driver,RME9652 driver
Trident driver,Digigram VX222 driver,YMFPCI driver
Set the module owner field in each driver's struct pci_driver to get
the driver symlink in the sysfs device directory.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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AD1889 driver,ATIIXP driver,ATIIXP-modem driver,AZT3328 driver
BT87x driver,CMIPCI driver,CS4281 driver,ENS1370/1+ driver
ES1938 driver,ES1968 driver,FM801 driver,Intel8x0 driver
Intel8x0-modem driver,Maestro3 driver,SonicVibes driver,VIA82xx driver
VIA82xx-modem driver,AC97 Codec,AK4531 codec,au88x0 driver
CA0106 driver,CS46xx driver,EMU10K1/EMU10K2 driver,HDA Codec driver
HDA generic driver,HDA Intel driver,ICE1712 driver,ICE1724 driver
KORG1212 driver,MIXART driver,NM256 driver,Trident driver,YMFPCI driver
Replace kcalloc(1,..) with kzalloc().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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CS46xx driver,EMU10K1/EMU10K2 driver,PCM Midlevel,Trident driver
YMFPCI driver,BT87x driver,CMIPCI driver,CS4281 driver
ENS1370/1+ driver,ES1938 driver,ES1968 driver,Intel8x0 driver
Intel8x0-modem driver,Maestro3 driver,RME32 driver,RME96 driver
SonicVibes driver,VIA82xx driver,ALI5451 driver,ICE1712 driver
ICE1724 driver,NM256 driver,RME HDSP driver,RME9652 driver
Remove superfluous PCI ID definitions.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Documentation,CS46xx driver,EMU10K1/EMU10K2 driver,AD1848 driver
SB16/AWE driver,CMIPCI driver,ENS1370/1+ driver,RME32 driver
RME96 driver,ICE1712 driver,ICE1724 driver,KORG1212 driver
RME HDSP driver,RME9652 driver
This patch changes .iface to SNDRV_CTL_ELEM_IFACE_MIXER whre _PCM or
_HWDEP was used in controls that are not associated with a specific PCM
(sub)stream or hwdep device, and changes some controls that got
inconsitent .iface values due to copy+paste errors. Furthermore, it
makes sure that all control that do use _PCM or _HWDEP use the correct
number in the .device field.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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CMIPCI driver
Added 'Mic Boost Capture Switch' and 'Phone' switches.
The existing playback switch is renamed as 'Mic Boost Playback Switch'.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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`gcc -W' likes to complain if the static keyword is not at the beginning of
the declaration. This patch fixes all remaining occurrences of "inline
static" up with "static inline" in the entire kernel tree (140 occurrences in
47 files).
While making this change I came across a few lines with trailing whitespace
that I also fixed up, I have also added or removed a blank line or two here
and there, but there are no functional changes in the patch.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Documentation,ALS4000 driver,ATIIXP driver,ATIIXP-modem driver
AZT3328 driver,BT87x driver,CMIPCI driver,CS4281 driver
ENS1370/1+ driver,ES1938 driver,ES1968 driver,FM801 driver
Intel8x0 driver,Intel8x0-modem driver,Maestro3 driver,RME32 driver
RME96 driver,SonicVibes driver,VIA82xx driver,VIA82xx-modem driver
ALI5451 driver,au88x0 driver,CA0106 driver,CS46xx driver
EMU10K1/EMU10K2 driver,HDA Intel driver,ICE1712 driver,ICE1724 driver
KORG1212 driver,MIXART driver,NM256 driver,RME HDSP driver
RME9652 driver,Trident driver,Digigram VX222 driver,YMFPCI driver
Replace the obsolete pci_module_init() with pci_register_driver().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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