- 03 5月, 2007 40 次提交
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由 Eric Dumazet 提交于
There is a tiny probability that the return value from vtime(time_t *t) is Signed-off-by: NAndi Kleen <ak@suse.de> different than the value stored in *t Using a temporary variable solves the problem and gives a faster code. 17: 48 85 ff test %rdi,%rdi 1a: 48 8b 05 00 00 00 00 mov 0(%rip),%rax # __vsyscall_gtod_data.wall_time_tv.tv_sec 21: 74 03 je 26 23: 48 89 07 mov %rax,(%rdi) 26: c9 leaveq 27: c3 retq Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
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由 Adrian Bunk 提交于
Many years ago, UNEXPECTED_IO_APIC() contained printk()'s (but nothing more). Now that it's completely empty for years, we can as well remove it. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Adrian Bunk 提交于
- there's no reason for duplicating the prototype from include/linux/syscalls.h in include/asm-x86_64/unistd.h - every file should #include the headers containing the prototypes for it's global functions Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Christoph Lameter 提交于
x86_64 currently simulates a list using the index and private fields of the page struct. Seems that the code was inherited from i386. But x86_64 does not use the slab to allocate pgds and pmds etc. So the lru field is not used by the slab and therefore available. This patch uses standard list operations on page->lru to realize pgd tracking. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Parag Warudkar 提交于
Signed-off-by: NParag Warudkar <parag.warudkar@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
suggested by Jan Beulich Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
Move X86_EFLAGS_IF et al out to a new header: processor-flags.h, so we can include it from irqflags.h and use it in raw_irqs_disabled_flags(). As a side-effect, we could now use these flags in .S files. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Parag Warudkar 提交于
Signed-off-by: NParag Warudkar <parag.warudkar@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Jan Beulich 提交于
On x86-64, kernel memory freed after init can be entirely unmapped instead of just getting 'poisoned' by overwriting with a debug pattern. On i386 and x86-64 (under CONFIG_DEBUG_RODATA), kernel text and bug table can also be write-protected. Compared to the first version, this one prevents re-creating deleted mappings in the kernel image range on x86-64, if those got removed previously. This, together with the original changes, prevents temporarily having inconsistent mappings when cacheability attributes are being changed on such pages (e.g. from AGP code). While on i386 such duplicate mappings don't exist, the same change is done there, too, both for consistency and because checking pte_present() before using various other pte_XXX functions is a requirement anyway. At once, i386 code gets adjusted to use pte_huge() instead of open coding this. AK: split out cpa() changes Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Jan Beulich 提交于
Fix various broken corner cases in i386 and x86-64 change_page_attr. AK: split off from tighten kernel image access rights Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Rusty Russell 提交于
paravirt.c used to implement native versions of all low-level functions. Far cleaner is to have the native versions exposed in the headers and as inline native_XXX, and if !CONFIG_PARAVIRT, then simply #define XXX native_XXX. There are several nice side effects: 1) write_dt_entry() now takes the correct "struct Xgt_desc_struct *" not "void *". 2) load_TLS is reintroduced to the for loop, not manually unrolled with a #error in case the bounds ever change. 3) Macros become inlines, with type checking. 4) Access to the native versions is trivial for KVM, lguest, Xen and others who might want it. Signed-off-by: NJeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Sebastien Dugue 提交于
Rename boot_gdt_table to boot_gdt to avoid the duplicate T(able). Signed-off-by: NSebastien Dugue <sebastien.dugue@bull.net> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Rusty Russell 提交于
We now have cpu_init() and secondary_cpu_init() doing nothing but calling _cpu_init() with the same arguments. Rename _cpu_init() to cpu_init() and use it as a replcement for secondary_cpu_init(). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Rusty Russell 提交于
Now we are no longer dynamically allocating the GDT, we don't need the "cpu_gdt_table" at all: we can switch straight from "boot_gdt_table" to the per-cpu GDT. This means initializing the cpu_gdt array in C. The boot CPU uses the per-cpu var directly, then in smp_prepare_cpus() it switches to the per-cpu copy just allocated. For secondary CPUs, the early_gdt_descr is set to point directly to their per-cpu copy. For UP the code is very simple: it keeps using the "per-cpu" GDT as per SMP, but we never have to move. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Rusty Russell 提交于
Allocating PDA and GDT at boot is a pain. Using simple per-cpu variables adds happiness (although we need the GDT page-aligned for Xen, which we do in a followup patch). [akpm@linux-foundation.org: build fix] Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Bernhard Walle 提交于
Because the command line is increased to 2048 characters after 2.6.21, it's not possible for boot loaders and userspace tools to determine the length of the command line the kernel can understand. The benefit of knowing the length is that users can be warned if the command line size is too long which prevents surprise if things don't work after bootup. This patch updates the boot protocol to contain a field called "cmdline_size" that contain the length of the command line (excluding the terminating zero). The patch also adds missing fields (of protocol version 2.05) to the x86_64 setup code. Signed-off-by: NBernhard Walle <bwalle@suse.de> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Alon Bar-Lev <alon.barlev@gmail.com> Acked-by: NH. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Ian Campbell 提交于
The specific case I am encountering is kdump under Xen with a 64 bit hypervisor and 32 bit kernel/userspace. The dump created is 64 bit due to the hypervisor but the dump kernel is 32 bit for maximum compatibility. It's possibly less likely to be useful in a purely native scenario but I see no reason to disallow it. [akpm@linux-foundation.org: build fix] Signed-off-by: NIan Campbell <ian.campbell@xensource.com> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NVivek Goyal <vgoyal@in.ibm.com> Cc: Horms <horms@verge.net.au> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Rusty Russell 提交于
GCC (4.1 at least) unrolls it anyway, but I can't believe this code was ever justifiable. (I've also submitted a patch which cleans up i386, which is even uglier). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Rusty Russell 提交于
Whenever we schedule, __switch_to calls load_esp0 which does: tss->esp0 = thread->esp0; This is never initialized for the initial thread (ie "swapper"), so when we're scheduling that, we end up setting esp0 to 0. This is fine: the swapper never leaves ring 0, so this field is never used. lguest, however, gets upset that we're trying to used an unmapped page as our kernel stack. Rather than work around it there, let's initialize it. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Andrew Morton 提交于
The lguest patches somehow managed to trigger this: In file included from arch/i386/lguest/lguest.c:38: include/asm/asm-offsets.h:67:1: warning: "VDSO_PRELINK" redefined In file included from include/linux/elf.h:7, from include/linux/module.h:15, from include/linux/device.h:21, from include/linux/interrupt.h:15, from arch/i386/lguest/lguest.c:27: include/asm/elf.h:140:1: warning: this is the location of the previous definition I assume that using the same identifier twice was a bad idea.. Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 David Rientjes 提交于
Create a document to explain how to use numa=fake in conjunction with cpusets for coarse memory resource management. An attempt to get more awareness and testing for this feature. Cc: Andi Kleen <ak@suse.de> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Joerg Roedel 提交于
remove the reporting of the constant_tsc flag from the "power management" field in /proc/cpuinfo. The NULL value there was replaced by "" because the former would result in a printout of [8] if the flag is set. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 David Rientjes 提交于
Extends the numa=fake x86_64 command-line option to split the remaining system memory into nodes of fixed size. Any leftover memory is allocated to a final node unless the command-line ends with a comma. For example: numa=fake=2*512,*128 gives two 512M nodes and the remaining system memory is split into nodes of 128M each. This is beneficial for systems where the exact size of RAM is unknown or not necessarily relevant, but the size of the remaining nodes to be allocated is known based on their capacity for resource management. Cc: Andi Kleen <ak@suse.de> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 David Rientjes 提交于
Extends the numa=fake x86_64 command-line option to split the remaining system memory into equal-sized nodes. For example: numa=fake=2*512,4* gives two 512M nodes and the remaining system memory is split into four approximately equal chunks. This is beneficial for systems where the exact size of RAM is unknown or not necessarily relevant, but the granularity with which nodes shall be allocated is known. Cc: Andi Kleen <ak@suse.de> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 David Rientjes 提交于
Extends the numa=fake x86_64 command-line option to allow for configurable node sizes. These nodes can be used in conjunction with cpusets for coarse memory resource management. The old command-line option is still supported: numa=fake=32 gives 32 fake NUMA nodes, ignoring the NUMA setup of the actual machine. But now you may configure your system for the node sizes of your choice: numa=fake=2*512,1024,2*256 gives two 512M nodes, one 1024M node, two 256M nodes, and the rest of system memory to a sixth node. The existing hash function is maintained to support the various node sizes that are possible with this implementation. Each node of the same size receives roughly the same amount of available pages, regardless of any reserved memory with its address range. The total available pages on the system is calculated and divided by the number of equal nodes to allocate. These nodes are then dynamically allocated and their borders extended until such time as their number of available pages reaches the required size. Configurable node sizes are recommended when used in conjunction with cpusets for memory control because it eliminates the overhead associated with scanning the zonelists of many smaller full nodes on page_alloc(). Cc: Andi Kleen <ak@suse.de> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Ahmed S. Darwish 提交于
Fix comments to represent the true number of quadwords in GDT. Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Adrian Bunk 提交于
This patch makes the needlessly global vmi_pmd_clear() static. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NZachary Amsden <zach@vmware.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Yinghai Lu 提交于
Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Ralf Baechle 提交于
Reorder code to avoid multiple inclusion of elf.h. #undef several symbols to avoid build errors over redefinitions. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 john stultz 提交于
Change mark_tsc_unstable() so it takes a string argument, which holds the reason the TSC was marked unstable. This is then displayed the first time mark_tsc_unstable is called. This should help us better debug why the TSC was marked unstable on certain systems and allow us to make sure we're not being overly paranoid when throwing out this troublesome clocksource. Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Adrian Bunk 提交于
Work around a warning with -Wmissing-prototypes in arch/i386/kernel/asm-offsets.c The warning isn't gcc's fault - asm-offsets.c is simply a special file. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Ken Chen 提交于
clean up unneeded type cast by properly declare data type. Signed-off-by: NKen Chen <kenchen@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Zachary Amsden <zach@vmware.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Vivek Goyal 提交于
o Modpost generates warnings for i386 if compiled with CONFIG_RELOCATABLE=y WARNING: vmlinux - Section mismatch: reference to .init.text:find_unisys_acpi_oem_table from .text between 'acpi_madt_oem_check' (at offset 0xc0101eda) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:acpi_get_table_header_early from .text between 'acpi_madt_oem_check' (at offset 0xc0101ef0) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:parse_unisys_oem from .text between 'acpi_madt_oem_check' (at offset 0xc0101f2e) and 'enable_apic_mode' WARNING: vmlinux - Section mismatch: reference to .init.text:setup_unisys from .text between 'acpi_madt_oem_check' (at offset 0xc0101f37) and 'enable_apic_mode'WARNING: vmlinux - Section mismatch: reference to .init.text:parse_unisys_oem from .text between 'mps_oem_check' (at offset 0xc0101ec7) and 'acpi_madt_oem_check' WARNING: vmlinux - Section mismatch: reference to .init.text:es7000_sw_apic from .text between 'enable_apic_mode' (at offset 0xc0101f48) and 'check_apicid_present' o Some functions which are inline (acpi_madt_oem_check) are not inlined by compiler as these functions are accessed using function pointer. These functions are put in .text section and they in-turn access __init type functions hence modpost generates warnings. o Do not iniline acpi_madt_oem_check, instead make it __init. Signed-off-by: NVivek Goyal <vgoyal@in.ibm.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Ravikiran G Thirumalai 提交于
Enable system hashtable memory to be distributed among nodes on x86_64 NUMA Forcing the kernel to use node interleaved vmalloc instead of bootmem for the system hashtable memory (alloc_large_system_hash) reduces the memory imbalance on node 0 by around 40MB on a 8 node x86_64 NUMA box: Before the following patch, on bootup of a 8 node box: Node 0 MemTotal: 3407488 kB Node 0 MemFree: 3206296 kB Node 0 MemUsed: 201192 kB Node 0 Active: 7012 kB Node 0 Inactive: 512 kB Node 0 Dirty: 0 kB Node 0 Writeback: 0 kB Node 0 FilePages: 1912 kB Node 0 Mapped: 420 kB Node 0 AnonPages: 5612 kB Node 0 PageTables: 468 kB Node 0 NFS_Unstable: 0 kB Node 0 Bounce: 0 kB Node 0 Slab: 5408 kB Node 0 SReclaimable: 644 kB Node 0 SUnreclaim: 4764 kB After the patch (or using hashdist=1 on the kernel command line): Node 0 MemTotal: 3407488 kB Node 0 MemFree: 3247608 kB Node 0 MemUsed: 159880 kB Node 0 Active: 3012 kB Node 0 Inactive: 616 kB Node 0 Dirty: 0 kB Node 0 Writeback: 0 kB Node 0 FilePages: 2424 kB Node 0 Mapped: 380 kB Node 0 AnonPages: 1200 kB Node 0 PageTables: 396 kB Node 0 NFS_Unstable: 0 kB Node 0 Bounce: 0 kB Node 0 Slab: 6304 kB Node 0 SReclaimable: 1596 kB Node 0 SUnreclaim: 4708 kB I guess it is a good idea to keep HASHDIST_DEFAULT "on" for x86_64 NUMA since x86_64 has no dearth of vmalloc space? Or maybe enable hash distribution for all 64bit NUMA arches? The following patch does it only for x86_64. I ran a HPC MPI benchmark -- 'Ansys wingsolid', which takes up quite a bit of memory and uses up tlb entries. This was on a 4 way, 2 socket Tyan AMD box (non vsmp), with 8G total memory (4G pernode). The results with and without hash distribution are: 1. Vanilla - runtime of 1188.000s 2. With hashdist=1 runtime of 1154.000s Oprofile output for the duration of run is: 1. Vanilla: PU: AMD64 processors, speed 2411.16 MHz (estimated) Counted L1_AND_L2_DTLB_MISSES events (L1 and L2 DTLB misses) with a unit mask of 0x00 (No unit mask) count 500 samples % app name symbol name 163054 6.5513 libansys1.so MultiFront::decompose(int, int, Elemset *, int *, int, int, int) 162061 6.5114 libansys3.so blockSaxpy6L_fd 162042 6.5107 libansys3.so blockInnerProduct6L_fd 156286 6.2794 libansys3.so maxb33_ 87879 3.5309 libansys1.so elmatrixmultpcg_ 84857 3.4095 libansys4.so saxpy_pcg 58637 2.3560 libansys4.so .st4560 46612 1.8728 libansys4.so .st4282 43043 1.7294 vmlinux-t copy_user_generic_string 41326 1.6604 libansys3.so blockSaxpyBackSolve6L_fd 41288 1.6589 libansys3.so blockInnerProductBackSolve6L_fd 2. With hashdist=1 CPU: AMD64 processors, speed 2411.13 MHz (estimated) Counted L1_AND_L2_DTLB_MISSES events (L1 and L2 DTLB misses) with a unit mask of 0x00 (No unit mask) count 500 samples % app name symbol name 162993 6.9814 libansys1.so MultiFront::decompose(int, int, Elemset *, int *, int, int, int) 160799 6.8874 libansys3.so blockInnerProduct6L_fd 160459 6.8729 libansys3.so blockSaxpy6L_fd 156018 6.6826 libansys3.so maxb33_ 84700 3.6279 libansys4.so saxpy_pcg 83434 3.5737 libansys1.so elmatrixmultpcg_ 58074 2.4875 libansys4.so .st4560 46000 1.9703 libansys4.so .st4282 41166 1.7632 libansys3.so blockSaxpyBackSolve6L_fd 41033 1.7575 libansys3.so blockInnerProductBackSolve6L_fd 35762 1.5318 libansys1.so inner_product_sub 35591 1.5245 libansys1.so inner_product_sub2 28259 1.2104 libansys4.so addVectors Signed-off-by: NPravin B. Shelar <pravin.shelar@calsoftinc.com> Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org> Signed-off-by: NShai Fultheim <shai@scalex86.org> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NChristoph Lameter <clameter@engr.sgi.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
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由 Andi Kleen 提交于
Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
Previously it wasn't enabled in the binfmt_aout is a module case. Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
When compiling with -Os (which is default) the compiler defaults to it anyways. And with -O2 it probably generates somewhat better (although also larger) code. Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andrew Morton 提交于
Fix for the following patch. Provide dummy cpufreq functions when CPUFREQ is not compiled in. Cc: Andi Kleen <ak@suse.de> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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