kernel/linux.git/drivers/parisc, branch linux-2.6.18.y

[PATCH] irq-flags: PARISC: Use the new IRQF_ constants

2006-07-02T20:58:52+00:00

Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: Thomas Gleixner Cc: Ingo Molnar Cc: "David S. Miller" Cc: Benjamin Herrenschmidt Cc: Kyle McMartin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial

2006-06-30T22:39:30+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: Remove obsolete #include remove obsolete swsusp_encrypt arch/arm26/Kconfig typos Documentation/IPMI typos Kconfig: Typos in net/sched/Kconfig v9fs: do not include linux/version.h Documentation/DocBook/mtdnand.tmpl: typo fixes typo fixes: specfic -> specific typo fixes in Documentation/networking/pktgen.txt typo fixes: occuring -> occurring typo fixes: infomation -> information typo fixes: disadvantadge -> disadvantage typo fixes: aquire -> acquire typo fixes: mecanism -> mechanism typo fixes: bandwith -> bandwidth fix a typo in the RTC_CLASS help text smb is no longer maintained Manually merged trivial conflict in arch/um/kernel/vmlinux.lds.S

[PATCH] Light weight event counters

2006-06-30T18:25:36+00:00

The remaining counters in page_state after the zoned VM counter patches have been applied are all just for show in /proc/vmstat. They have no essential function for the VM. We use a simple increment of per cpu variables. In order to avoid the most severe races we disable preempt. Preempt does not prevent the race between an increment and an interrupt handler incrementing the same statistics counter. However, that race is exceedingly rare, we may only loose one increment or so and there is no requirement (at least not in kernel) that the vm event counters have to be accurate. In the non preempt case this results in a simple increment for each counter. For many architectures this will be reduced by the compiler to a single instruction. This single instruction is atomic for i386 and x86_64. And therefore even the rare race condition in an interrupt is avoided for both architectures in most cases. The patchset also adds an off switch for embedded systems that allows a building of linux kernels without these counters. The implementation of these counters is through inline code that hopefully results in only a single instruction increment instruction being emitted (i386, x86_64) or in the increment being hidden though instruction concurrency (EPIC architectures such as ia64 can get that done). Benefits: - VM event counter operations usually reduce to a single inline instruction on i386 and x86_64. - No interrupt disable, only preempt disable for the preempt case. Preempt disable can also be avoided by moving the counter into a spinlock. - Handling is similar to zoned VM counters. - Simple and easily extendable. - Can be omitted to reduce memory use for embedded use. References: RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=113512330605497&w=2 RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=114988082814934&w=2 local_t http://marc.theaimsgroup.com/?l=linux-kernel&m=114991748606690&w=2 V2 http://marc.theaimsgroup.com/?t=115014808400007&r=1&w=2 V3 http://marc.theaimsgroup.com/?l=linux-kernel&m=115024767022346&w=2 V4 http://marc.theaimsgroup.com/?l=linux-kernel&m=115047968808926&w=2 Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel Signed-off-by: Adrian Bunk

Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6

2006-06-29T18:30:45+00:00

* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (23 commits) [PARISC] Move os_id_to_string() inside #ifndef __ASSEMBLY__ [PARISC] Fix do_gettimeofday() hang [PARISC] Fix PCREL22F relocation problem for most modules [PARISC] Refactor show_regs in traps.c [PARISC] Add os_id_to_string helper [PARISC] OS_ID_LINUX == 0x0006 [PARISC] Ensure Space ID hashing is turned off [PARISC] Match show_cache_info with reality [PARISC] Remove unused macro fixup_branch in syscall.S [PARISC] Add is_compat_task() helper [PARISC] Update Thibaut Varene's CREDITS entry [PARISC] Reduce data footprint in pdc_stable.c [PARISC] pdc_stable version 0.30 [PARISC] Work around machines which do not support chassis warnings [PARISC] PDC_CHASSIS is implemented on all machines [PARISC] Remove unconditional #define PIC in syscall macros [PARISC] Use MFIA in current_text_addr on pa2.0 processors [PARISC] Remove dead function pc_in_user_space [PARISC] Test ioc_needs_fdc variable instead of open coding [PARISC] Fix gcc 4.1 warnings in sba_iommu.c ...

[PATCH] genirq: rename desc->handler to desc->chip

2006-06-29T17:26:21+00:00

This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PARISC] Add os_id_to_string helper

2006-06-27T23:28:43+00:00

Add a helper to asm/pdc.h to translate OS_ID values to strings and use it in the pdc_stable driver. Signed-off-by: Kyle McMartin

[PARISC] OS_ID_LINUX == 0x0006

2006-06-27T23:28:42+00:00

We were assigned an OS_ID of 0x0006. Consistently use OS_ID_LINUX instead of using the magic number. Also update the OS_ID_ defines in asm/pdc.h to reflect this. Signed-off-by: Kyle McMartin

[PARISC] Reduce data footprint in pdc_stable.c

2006-06-27T23:28:39+00:00

No code change - reduce data footprint. Signed-off-by: Thibaut VARENE Signed-off-by: Kyle McMartin

[PARISC] pdc_stable version 0.30

2006-06-27T23:28:38+00:00

pdc_stable v0.30: This patch introduces 3 more files to the /sys/firmware/stable tree: - diagnostic, which contains a cryptic hex string - osdep1, a 16 bytes os-dependent storage area always available - osdep2, another os-dependent storage area which existence/size depends on hversion. This patch also adds code to setup the "Linux" signature in stable storage. That is to say that starting with this patch, the kernel will now sign its OSID (0x0006, thx LaMont) in Stable Storage upon boot, whether pdc_stable is enabled or not. Signed-off-by: Thibaut VARENE Signed-off-by: Kyle McMartin