summaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAgeFilesLines
* x86: merge 64 and 32 SMP percpu handlingTejun Heo2009-01-168-105/+55
| | | | | | | | | | | | | | | | | | | Now that pda is allocated as part of percpu, percpu doesn't need to be accessed through pda. Unify x86_64 SMP percpu access with x86_32 SMP one. Other than the segment register, operand size and the base of percpu symbols, they behave identical now. This patch replaces now unnecessary pda->data_offset with a dummy field which is necessary to keep stack_canary at its place. This patch also moves per_cpu_offset initialization out of init_gdt() into setup_per_cpu_areas(). Note that this change also necessitates explicit per_cpu_offset initializations in voyager_smp.c. With this change, x86_OP_percpu()'s are as efficient on x86_64 as on x86_32 and also x86_64 can use assembly PER_CPU macros. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fold pda into percpu area on SMPTejun Heo2009-01-1611-144/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Based on original patch from Christoph Lameter and Mike Travis. ] Currently pdas and percpu areas are allocated separately. %gs points to local pda and percpu area can be reached using pda->data_offset. This patch folds pda into percpu area. Due to strange gcc requirement, pda needs to be at the beginning of the percpu area so that pda->stack_canary is at %gs:40. To achieve this, a new percpu output section macro - PERCPU_VADDR_PREALLOC() - is added and used to reserve pda sized chunk at the start of the percpu area. After this change, for boot cpu, %gs first points to pda in the data.init area and later during setup_per_cpu_areas() gets updated to point to the actual pda. This means that setup_per_cpu_areas() need to reload %gs for CPU0 while clearing pda area for other cpus as cpu0 already has modified it when control reaches setup_per_cpu_areas(). This patch also removes now unnecessary get_local_pda() and its call sites. A lot of this patch is taken from Mike Travis' "x86_64: Fold pda into per cpu area" patch. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use static _cpu_pda arrayTejun Heo2009-01-164-25/+6
| | | | | | | | | | | _cpu_pda array first uses statically allocated storage in data.init and then switches to allocated bootmem to conserve space. However, after folding pda area into percpu area, _cpu_pda array will be removed completely. Drop the reallocation part to simplify the code for soon-to-follow changes. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: load pointer to pda into %gs while brining up a CPUTejun Heo2009-01-165-7/+15
| | | | | | | | | | | | | | | [ Based on original patch from Christoph Lameter and Mike Travis. ] CPU startup code in head_64.S loaded address of a zero page into %gs for temporary use till pda is loaded but address to the actual pda is available at the point. Load the real address directly instead. This will help unifying percpu and pda handling later on. This patch is mostly taken from Mike Travis' "x86_64: Fold pda into per cpu area" patch. Signed-off-by: Tejun Heo <tj@kernel.org>
* x86: make percpu symbols zerobased on SMPTejun Heo2009-01-166-10/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | [ Based on original patch from Christoph Lameter and Mike Travis. ] This patch makes percpu symbols zerobased on x86_64 SMP by adding PERCPU_VADDR() to vmlinux.lds.h which helps setting explicit vaddr on the percpu output section and using it in vmlinux_64.lds.S. A new PHDR is added as existing ones cannot contain sections near address zero. PERCPU_VADDR() also adds a new symbol __per_cpu_load which always points to the vaddr of the loaded percpu data.init region. The following adjustments have been made to accomodate the address change. * code to locate percpu gdt_page in head_64.S is updated to add the load address to the gdt_page offset. * __per_cpu_load is used in places where access to the init data area is necessary. * pda->data_offset is initialized soon after C code is entered as zero value doesn't work anymore. This patch is mostly taken from Mike Travis' "x86_64: Base percpu variables at zero" patch. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make vmlinux_32.lds.S use PERCPU() macroTejun Heo2009-01-161-8/+1
| | | | | | | | Make vmlinux_32.lds.S use the generic PERCPU() macro instead of open coding it. This will ease future changes. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: cleanup early setup_percpu referencesMike Travis2009-01-161-16/+40
| | | | | | | | | | | | | [ Based on original patch from Christoph Lameter and Mike Travis. ] * Ruggedize some calls in setup_percpu.c to prevent mishaps in early calls, particularly for non-critical functions. * Cleanup DEBUG_PER_CPU_MAPS usages and some comments. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make early_per_cpu() a lvalue and use itTejun Heo2009-01-163-18/+6
| | | | | | | | Make early_per_cpu() a lvalue as per_cpu() is and use it where applicable. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix pda_to_op()Tejun Heo2009-01-161-1/+1
| | | | | | | | There's no instruction to move a 64bit immediate into memory location. Drop "i". Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*---. Merge branches 'cpus4096', 'x86/cleanups' and 'x86/urgent' into x86/percpuIngo Molnar2009-01-1592-593/+890
|\ \ \
| | | * x86: avoid early crash in disable_local_APIC()Jan Beulich2009-01-151-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | E.g. when called due to an early panic. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * x86: fully honor "nolapic"Jan Beulich2009-01-153-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: widen the effect of the 'nolapic' boot parameter "nolapic" should not only suppress SMP and use of the LAPIC, but it also ought to have the effect of disabling all IO-APIC related activity as well as PCI MSI and HT-IRQs. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * x86, pat: fix reserve_memtype() for legacy 1MB rangeSuresh Siddha2009-01-141-10/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thierry Vignaud reported: > http://bugzilla.kernel.org/show_bug.cgi?id=12372 > > On P4 with an SiS motherboard (video card is a SiS 651) > X server fails to start with error: > xf86MapVidMem: Could not mmap framebuffer (0x00000000,0x2000) (Invalid > argument) Here X is trying to map first 8KB of memory using /dev/mem. Existing code treats first 0-4KB of memory as non-RAM and 4KB-8KB as RAM. Recent code changes don't allow to map memory with different attributes at the same time. Fix this by treating the first 1MB legacy region as special and always track the attribute requests with in this region using linear linked list (and don't bother if the range is RAM or non-RAM or mixed) Reported-and-tested-by: Thierry Vignaud <tvignaud@mandriva.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * x86, generic: mark complex bitops.h inlines as __always_inlineAndi Kleen2009-01-135-9/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel image size Hugh Dickins noticed that older gcc versions when the kernel is built for code size didn't inline some of the bitops. Mark all complex x86 bitops that have more than a single asm statement or two as always inline to avoid this problem. Probably should be done for other architectures too. Ingo then found a better fix that only requires a single line change, but it unfortunately only works on gcc 4.3. On older gccs the original patch still makes a ~0.3% defconfig difference with CONFIG_OPTIMIZE_INLINING=y. With gcc 4.1 and a defconfig like build: 6116998 1138540 883788 8139326 7c323e vmlinux-oi-with-patch 6137043 1138540 883788 8159371 7c808b vmlinux-optimize-inlining ~20k / 0.3% difference. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * x86, cpufreq: remove leftover copymask_copy()Ingo Molnar2009-01-131-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix potential boot crash on MAXSMP Remove code left over by: 50c668d: Revert "cpumask: use work_on_cpu in acpi-cpufreq.c for drv_read That cmd.cpumask is not allocated anymore. No impact on default !MAXSMP kernels. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: make 32bit MAX_HARDIRQS_PER_CPU to be NR_VECTORSYinghai Lu2009-01-141-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: clean up to be same as 64bit 32-bit is using per-cpu vector too, so don't use default NR_IRQS. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: replacing mp_config_intsrc with mpc_intsrcJaswinder Singh Rajput2009-01-144-117/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, solve 80 columns wrap problems Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: replacing mp_config_ioapic with mpc_ioapicJaswinder Singh Rajput2009-01-144-60/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, solve 80 columns wrap problems Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: module_64.c fix style problemsJaswinder Singh Rajput2009-01-121-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Fix: ERROR: trailing whitespace ERROR: code indent should use tabs where possible WARNING: %Ld/%Lu are not-standard C, use %lld/%llu WARNING: printk() should include KERN_ facility level ERROR: spaces required around that '=' (ctx:VxW) total: 13 errors, 2 warnings Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: module_32.c fix style problemsJaswinder Singh Rajput2009-01-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Fix: ERROR: code indent should use tabs where possible ERROR: trailing whitespace ERROR: spaces required around that '=' (ctx:VxW) total: 3 errors, 0 warnings Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: msr.c fix style problemsJaswinder Singh Rajput2009-01-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Fix: WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h> total: 0 errors, 1 warnings Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: microcode_intel.c fix style problemsJaswinder Singh Rajput2009-01-121-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Fix: WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h> ERROR: trailing whitespace ERROR: "(foo*)" should be "(foo *)" total: 3 errors, 1 warnings Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | Merge commit 'v2.6.29-rc1' into x86/cleanupsIngo Molnar2009-01-125-6/+59
| | |\ \
| | * | | x86: smp.h move cpu_sibling_setup_mask and cpu_sibling_setup_map declartion ↵Jaswinder Singh Rajput2009-01-102-12/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to cpumask.h Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | x86: smp.h move cpu_initialized_mask and cpu_initialized declartion to cpumask.hJaswinder Singh Rajput2009-01-102-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | x86: smp.h move cpu_callout_mask and cpu_callout_map declartion to cpumask.hJaswinder Singh Rajput2009-01-103-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | x86: smp.h move cpu_callin_mask and cpu_callin_map declartion to cpumask.hJaswinder Singh Rajput2009-01-105-3/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | Merge branch 'linus' into x86/cleanupsIngo Molnar2009-01-103577-152396/+719978
| | |\ \ \
| | * | | | x86: rename all fields of mpf_intel mpf_X to XJaswinder Singh Rajput2009-01-082-35/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, solve 80 columns wrap problems It would be cleaner to rename all the mpf->mpf_X fields to mpf->X - that alone would give 4 characters per usage site. (we already know that it's an 'mpf' entity - no need to duplicate that in the field too) Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: rename intel_mp_floating to mpf_intelJaswinder Singh Rajput2009-01-082-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, solve 80 columns wrap problems intel_mp_floating should be renamed to mpf_intel. The reason: the 'f' in MPF already means 'floating' which means MP Floating pointer structure - no need to repeat that in the type name. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move boot_cpu_id declartion to cpu.hJaswinder Singh Rajput2009-01-074-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move cpu_physical_id declartion to cpu.hJaswinder Singh Rajput2009-01-072-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move safe_smp_processor_id declartion to cpu.hJaswinder Singh Rajput2009-01-075-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move stack_processor_id declartion to cpu.hJaswinder Singh Rajput2009-01-073-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move prefill_possible_map declartion to cpu.hJaswinder Singh Rajput2009-01-074-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, moving NON-SMP stuff from smp.h Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h move zap_low_mappings declartion to tlbflush.hJaswinder Singh Rajput2009-01-073-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, moving NON-SMP stuff from smp.h Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: smp.h remove obsolete function declarationJaswinder Singh Rajput2009-01-071-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | x86: fix broken flush_tlb_others_ipi(), fixIngo Molnar2009-01-151-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Use the proper type. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | irq: update all arches for new irq_desc, fixMike Travis2009-01-158-11/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix build errors Since the SPARSE IRQS changes redefined how the kstat irqs are organized, arch's must use the new accessor function: kstat_incr_irqs_this_cpu(irq, DESC); If CONFIG_SPARSE_IRQS is set, then DESC is a pointer to the irq_desc which has a pointer to the kstat_irqs. If not, then the .irqs field of struct kernel_stat is used instead. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | Merge branch 'master' of ↵Ingo Molnar2009-01-1422-41/+70
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo into cpus4096
| | * | | | | x86: arch_probe_nr_irqsYinghai Lu2009-01-125-12/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: save RAM with large NR_CPUS, get smaller nr_irqs Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Mike Travis <travis@sgi.com>
| | * | | | | irq: update all arches for new irq_descMike Travis2009-01-1217-29/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, update to new cpumask API Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's so access to them should be using the new cpumask API. Signed-off-by: Mike Travis <travis@sgi.com>
| * | | | | | x86: fix broken flush_tlb_others_ipi()Suresh Siddha2009-01-141-1/+1
| |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit broke flush_tlb_others_ipi() causing boot hangs on a 16 logical cpu system: > commit 4595f9620cda8a1e973588e743cf5f8436dd20c6 > Author: Rusty Russell <rusty@rustcorp.com.au> > Date: Sat Jan 10 21:58:09 2009 -0800 > > x86: change flush_tlb_others to take a const struct cpumask This change resulted in sending the invalidate tlb vector to the sender itself causing the hang. flush_tlb_others_ipi() should exclude the sender itself from the destination list. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | xen: fix too early kmalloc callChristophe Saout2009-01-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix bootup crash on xen guests SLAB is not yet up, with earlyprintk it is giving me an Oops in __kmalloc. Replace call to kmalloc() with alloc_bootmem(). Reported-by: Christophe Saout <christophe@saout.de> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | cpumask, irq: non-x86 build failuresMike Travis2009-01-113-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingo Molnar wrote: > All non-x86 architectures fail to build: > > In file included from /home/mingo/tip/include/linux/random.h:11, > from /home/mingo/tip/include/linux/stackprotector.h:6, > from /home/mingo/tip/init/main.c:17: > /home/mingo/tip/include/linux/irqnr.h:26:63: error: asm/irq_vectors.h: No such file or directory Do not include asm/irq_vectors.h in generic code - it's not available on all architectures. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | kstat: modify kstat_irqs_legacy to be variable sizedMike Travis2009-01-111-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce memory usage. Allocate kstat_irqs_legacy based on nr_cpu_ids to deal with this memory usage bump when NR_CPUS bumped from 128 to 4096: 8192 +253952 262144 +3100% kstat_irqs_legacy(.bss) This is only when CONFIG_SPARSE_IRQS=y. Signed-off-by: Mike Travis <travis@sgi.com>
| * | | | | irq: initialize nr_irqs based on nr_cpu_idsMike Travis2009-01-115-11/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: Reduce memory usage. This is the second half of the changes to make the irq_desc_ptrs be variable sized based on nr_cpu_ids. This is done by adding a new "max_nr_irqs" macro to irq_vectors.h (and a dummy in irqnr.h) to return a max NR_IRQS value based on NR_CPUS or nr_cpu_ids. This necessitated moving the define of MAX_IO_APICS to a separate file (asm/apicnum.h) so it could be included without the baggage of the other asm/apicdef.h declarations. Signed-off-by: Mike Travis <travis@sgi.com>
| * | | | | irq: allocate irq_desc_ptrs array based on nr_irqsMike Travis2009-01-112-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: allocate irq_desc_ptrs in preparation for making it variable-sized. This addresses this memory usage bump when NR_CPUS bumped from 128 to 4096: 34816 +229376 264192 +658% irq_desc_ptrs(.data.read_mostly) The patch is split into two parts, the first simply allocates the irq_desc_ptrs array. Then next will deal with making it variable. This is only when CONFIG_SPARSE_IRQS=y. Signed-off-by: Mike Travis <travis@sgi.com>
| * | | | | irq: use WARN() instead of WARN_ON().Mike Travis2009-01-111-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup WARN msg. Ingo requested: > While at it, could you please also convert this to a WARN() construct > instead? (in a separate commit) ... and it shall be done. ;-) Signed-off-by: Mike Travis <travis@sgi.com>
| * | | | | irq: change references from NR_IRQS to nr_irqsMike Travis2009-01-112-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: preparation, cleanup, add KERN_INFO printk Modify references from NR_IRQS to nr_irqs as the later will become variable-sized based on nr_cpu_ids when CONFIG_SPARSE_IRQS=y. Signed-off-by: Mike Travis <travis@sgi.com>
OpenPOWER on IntegriCloud