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2008-04-19x86: modify show_shared_cpu_map in intel_cacheinfoMike Travis
* Removed kmalloc (or local array) in show_shared_cpu_map(). * Added show_shared_cpu_list() function. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: convert cpumask_of_cpu macro to allocated arrayMike Travis
* Here is a simple patch to use an allocated array of cpumasks to represent cpumask_of_cpu() instead of constructing one on the stack. It's based on the Kconfig option "HAVE_CPUMASK_OF_CPU_MAP" which is currently only set for x86_64 SMP. Otherwise the the existing cpumask_of_cpu() is used but has been changed to produce an lvalue so a pointer to it can be used. Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19generic: reduce stack pressure in sched_affinityMike Travis
* Modify sched_affinity functions to pass cpumask_t variables by reference instead of by value. * Use new set_cpus_allowed_ptr function. Depends on: [sched-devel]: sched: add new set_cpus_allowed_ptr function Cc: Paul Jackson <pj@sgi.com> Cc: Cliff Wickman <cpw@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: use new set_cpus_allowed_ptr functionMike Travis
* Use new set_cpus_allowed_ptr() function added by previous patch, which instead of passing the "newly allowed cpus" cpumask_t arg by value, pass it by pointer: -int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) +int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask) * Cleanup uses of CPU_MASK_ALL. * Collapse other NR_CPUS changes to arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c Use pointers to cpumask_t arguments whenever possible. Depends on: [sched-devel]: sched: add new set_cpus_allowed_ptr function Cc: Len Brown <len.brown@intel.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19cpumask: Cleanup more uses of CPU_MASK and NODE_MASKMike Travis
* Replace usages of CPU_MASK_NONE, CPU_MASK_ALL, NODE_MASK_NONE, NODE_MASK_ALL to reduce stack requirements for large NR_CPUS and MAXNODES counts. * In some cases, the cpumask variable was initialized but then overwritten with another value. This is the case for changes like this: - cpumask_t oldmask = CPU_MASK_ALL; + cpumask_t oldmask; Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19numa: move large array from stack to _initdata sectionMike Travis
* Move large array "struct bootnode nodes" from stack to _initdata section to reduce amount of stack space required. Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: oprofile: remove NR_CPUS arrays in arch/x86/oprofile/nmi_int.cMike Travis
Change the following arrays sized by NR_CPUS to be PERCPU variables: static struct op_msrs cpu_msrs[NR_CPUS]; static unsigned long saved_lvtpc[NR_CPUS]; Also some minor complaints from checkpatch.pl fixed. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git All changes were transparent except for: static void nmi_shutdown(void) { + struct op_msrs *msrs = &__get_cpu_var(cpu_msrs); nmi_enabled = 0; on_each_cpu(nmi_cpu_shutdown, NULL, 0, 1); unregister_die_notifier(&profile_exceptions_nb); - model->shutdown(cpu_msrs); + model->shutdown(msrs); free_msrs(); } The existing code passed a reference to cpu 0's instance of struct op_msrs to model->shutdown, whilst the other functions are passed a reference to <this cpu's> instance of a struct op_msrs. This seemed to be a bug to me even though as long as cpu 0 and <this cpu> are of the same type it would have the same effect...? Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: reduce memory and stack usage in intel_cacheinfoMike Travis
* Change the following static arrays sized by NR_CPUS to per_cpu data variables: _cpuid4_info *cpuid4_info[NR_CPUS]; _index_kobject *index_kobject[NR_CPUS]; kobject * cache_kobject[NR_CPUS]; * Remove the local NR_CPUS array with a kmalloc'd region in show_shared_cpu_map(). Also some minor complaints from checkpatch.pl fixed. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: UV startup of slave cpusJack Steiner
This patch changes smpboot.c so that it can start slave cpus running in UV non-unique apicid mode. The SIPI must be sent using a UV-specific mechanism. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: integrate pci-dma.cGlauber Costa
The code in pci-dma_{32,64}.c are now sufficiently close to each other. We merge them in pci-dma.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: don't do dma if mask is NULL.Glauber Costa
if the device hasn't provided a mask, abort allocation. Note that we're using a fallback device now, so it does not cover the case of a NULL device: just drivers passing NULL masks around. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: return conditional to mmuGlauber Costa
Just return our allocation if we don't have an mmu. For i386, where this patch is being applied, we never have. So our goal is just to have the code to look like x86_64's. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: remove kludge from x86_64Glauber Costa
The claim is that i386 does it. Just it does not. So remove it. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: unify gfp masksGlauber Costa
Use the same gfp masks for x86_64 and i386. It involves using HIGHMEM or DMA32 where necessary, for the sake of code compatibility, (no real effect), and using the NORETRY mask for i386. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: retry allocation if failedGlauber Costa
This patch puts in the code to retry allocation in case it fails. By its own, it does not make much sense but making the code look like x86_64. But later patches in this series will make we try to allocate from zones other than DMA first, which will possibly fail. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: don't try to allocate from DMA zone at firstGlauber Costa
If we fail, we'll loop into the allocation again, and then allocate in the DMA zone. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: use a fallback dev for i386Glauber Costa
We can use a fallback dev for cases of a NULL device being passed (mostly ISA) This comes from x86_64 implementation. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: use numa allocation function in i386Glauber Costa
We can do it here to, in the same way x86_64 does. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: remove virt_to_bus in pci-dma_64.cGlauber Costa
virt_to_bus() is deprecated according to the docs, and moreover, won't return the right thing in i386 if we're dealing with high memory mappings. So we make our allocation function return a page, and then use page_address() (for virtual addr) and page_to_phys() (for physical addr) instead. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: adjust dma_free_coherent for i386Glauber Costa
We call unmap_single, if available. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move bad_dma_addressGlauber Costa
It goes to pci-dma.c, and is removed from the arch-specific files. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: isolate coherent mapping functionsGlauber Costa
i386 implements the declare coherent memory API, and x86_64 does not it is reflected in pieces of dma_alloc_coherent and dma_free_coherent. Those pieces are isolated in separate functions, that are declared as empty macros in x86_64. This way we can make the code the same. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_coherent functions to pci-dma.cGlauber Costa
They are placed in an ifdef, since they are i386 specific the structure definition goes to dma-mapping.h. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: merge iommu initialization parametersGlauber Costa
we merge the iommu initialization parameters in pci-dma.c Nice thing, that both architectures at least recognize the same parameters. usedac i386 parameter is marked for deprecation Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: merge dma_supportedGlauber Costa
The code for both arches are very similar, so this patch merge them. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move pci fixup to pci-dma.cGlauber Costa
via_no_dac provides a fixup that is the same for both architectures. Move it to pci-dma.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move x86_64-specific to common code.Glauber Costa
This patch moves the bootmem functions, that are largely x86_64-specific into pci-dma.c. The code goes inside an ifdef. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move initialization functions to pci-dma.cGlauber Costa
initcalls that triggers the various possibiities for dma subsys are moved to pci-dma.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: unify pci-nommuGlauber Costa
merge pci-base_32.c and pci-nommu_64.c into pci-nommu.c Their code were made the same, so now they can be merged. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move definition to pci-dma.cGlauber Costa
Move dma_ops structure definition to pci-dma.c, where it belongs. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: use dma_length in i386Glauber Costa
This is done to get the code closer to x86_64. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: use WARN_ON in mapping functionsGlauber Costa
In the very same way i386 do, we use WARN_ON functions in map_simple and map_sg. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: use sg_phys in x86_64Glauber Costa
To make the code usable in i386, where we have high memory mappings, we drop te virt_to_bus(sg_virt()) construction in favour of sg_phys. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: Add flush_write_buffers in nommu functionsGlauber Costa
This patch adds flush_write_buffers() in some functions of pci-nommu_64.c They are added anywhere i386 would also have it. This is not a problem for x86_64, since flush_rite_buffers() an nop for it. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: implement mapping_error in pci-nommu_64.cGlauber Costa
This patch implements mapping_error for pci-nommu_64.c. It takes care to keep the same compatible behaviour it already had. Although this file is not (yet) used for i386, we introduce the i386 version here. Again, care is taken, even at the expense of an ifdef, to keep the same behaviour inconditionally. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: delete empty functions from pci-nommu_64.cGlauber Costa
This functions are now called conditionally on their existence in the struct. So just delete them, instead of keeping an empty implementation. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: introduce pci-dma.cGlauber Costa
This patch introduces pci-dma.c, a common file for pci dma between i386 and x86_64. As a start, dma_set_mask() is the same between architectures, and is placed there. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_supported and dma_set_mask to pci-dma_32.c, fixMark McLoughlin
ERROR: "dma_supported" [drivers/ssb/ssb.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/qla2xxx/qla2xxx.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic7xxx.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic79xx.ko] undefined! ERROR: "dma_supported" [drivers/net/pcnet32.ko] undefined! ERROR: "dma_supported" [drivers/media/video/saa7134/saa7134.ko] undefined! ERROR: "dma_set_mask" [drivers/media/video/meye.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx8802.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx8800.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx88/cx88-alsa.ko] undefined! ERROR: "dma_supported" [drivers/media/video/cx23885/cx23885.ko] undefined! They just need to be exported like on x86_64. dma_supported() and dma_set_mask() were previously inlined, but are now moved to pci-dma_32.c. Since they're used by various drivers, they need to be exported. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: unify dma_mapping_errorGlauber Costa
We provide a map_error function in pci-base_32.c to make sure i386 keeps with the same behaviour it used to. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: provide a bad_dma_address symbol for i386Glauber Costa
It's initially 0, since we don't expect any DMA there. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_supported and dma_set_mask to pci-dma_32.cGlauber Costa
This is the way x86_64 does, so this make them equal. They have to be extern now in the header, and the extern definition is moved to the common dma-mapping.h header. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: dma-ops on highmem fixIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_sg_for_device to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_sg_for_cpu to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_single_range_for_device to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_single_range_for_cpu to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_single_for_device to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_sync_single_for_cpu to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_unmap_sg to common headerGlauber Costa
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-19x86: move dma_map_sg to common headerGlauber Costa
the old i386 implementation is moved to pci-base_32.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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