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* Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2009-12-191-0/+24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf session: Make events_stats u64 to avoid overflow on 32-bit arches hw-breakpoints: Fix hardware breakpoints -> perf events dependency perf events: Dont report side-band events on each cpu for per-task-per-cpu events perf events, x86/stacktrace: Fix performance/softlockup by providing a special frame pointer-only stack walker perf events, x86/stacktrace: Make stack walking optional perf events: Remove unused perf_counter.h header file perf probe: Check new event name kprobe-tracer: Check new event/group name perf probe: Check whether debugfs path is correct perf probe: Fix libdwarf include path for Debian
| * perf events, x86/stacktrace: Fix performance/softlockup by providing a ↵Frederic Weisbecker2009-12-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | special frame pointer-only stack walker It's just wasteful for stacktrace users like perf to walk through every entries on the stack whereas these only accept reliable ones, ie: that the frame pointer validates. Since perf requires pure reliable stacktraces, it needs a stack walker based on frame pointers-only to optimize the stacktrace processing. This might solve some near-lockup scenarios that can be triggered by call-graph tracing timer events. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1261024834-5336-2-git-send-regression-fweisbec@gmail.com> [ v2: fix for modular builds and small detail tidyup ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * perf events, x86/stacktrace: Make stack walking optionalFrederic Weisbecker2009-12-171-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current print_context_stack helper that does the stack walking job is good for usual stacktraces as it walks through all the stack and reports even addresses that look unreliable, which is nice when we don't have frame pointers for example. But we have users like perf that only require reliable stacktraces, and those may want a more adapted stack walker, so lets make this function a callback in stacktrace_ops that users can tune for their needs. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1261024834-5336-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-12-195-4/+20
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, irq: Allow 0xff for /proc/irq/[n]/smp_affinity on an 8-cpu system Makefile: Unexport LC_ALL instead of clearing it x86: Fix objdump version check in arch/x86/tools/chkobjdump.awk x86: Reenable TSC sync check at boot, even with NONSTOP_TSC x86: Don't use POSIX character classes in gen-insn-attr-x86.awk Makefile: set LC_CTYPE, LC_COLLATE, LC_NUMERIC to C x86: Increase MAX_EARLY_RES; insufficient on 32-bit NUMA x86: Fix checking of SRAT when node 0 ram is not from 0 x86, cpuid: Add "volatile" to asm in native_cpuid() x86, msr: msrs_alloc/free for CONFIG_SMP=n x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config space x86: Add IA32_TSC_AUX MSR and use it x86, msr/cpuid: Register enough minors for the MSR and CPUID drivers initramfs: add missing decompressor error check bzip2: Add missing checks for malloc returning NULL bzip2/lzma/gzip: pre-boot malloc doesn't return NULL on failure
| * | x86, irq: Allow 0xff for /proc/irq/[n]/smp_affinity on an 8-cpu systemSuresh Siddha2009-12-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | John Blackwood reported: > on an older Dell PowerEdge 6650 system with 8 cpus (4 are hyper-threaded), > and 32 bit (x86) kernel, once you change the irq smp_affinity of an irq > to be less than all cpus in the system, you can never change really the > irq smp_affinity back to be all cpus in the system (0xff) again, > even though no error status is returned on the "/bin/echo ff > > /proc/irq/[n]/smp_affinity" operation. > > This is due to that fact that BAD_APICID has the same value as > all cpus (0xff) on 32bit kernels, and thus the value returned from > set_desc_affinity() via the cpu_mask_to_apicid_and() function is treated > as a failure in set_ioapic_affinity_irq_desc(), and no affinity changes > are made. set_desc_affinity() is already checking if the incoming cpu mask intersects with the cpu online mask or not. So there is no need for the apic op cpu_mask_to_apicid_and() to check again and return BAD_APICID. Remove the BAD_APICID return value from cpu_mask_to_apicid_and() and also fix set_desc_affinity() to return -1 instead of using BAD_APICID to represent error conditions (as cpu_mask_to_apicid_and() can return logical or physical apicid values and BAD_APICID is really to represent bad physical apic id). Reported-by: John Blackwood <john.blackwood@ccur.com> Root-caused-by: John Blackwood <john.blackwood@ccur.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1261103386.2535.409.camel@sbs-t61> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | x86, cpuid: Add "volatile" to asm in native_cpuid()Suresh Siddha2009-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xsave_cntxt_init() does something like: cpuid(0xd, ..); // find out what features FP/SSE/.. etc are supported xsetbv(); // enable the features known to OS cpuid(0xd, ..); // find out the size of the context for features enabled Depending on what features get enabled in xsetbv(), value of the cpuid.eax=0xd.ecx=0.ebx changes correspondingly (representing the size of the context that is enabled). As we don't have volatile keyword for native_cpuid(), gcc 4.1.2 optimizes away the second cpuid and the kernel continues to use the cpuid information obtained before xsetbv(), ultimately leading to kernel crash on processors supporting more state than the legacy FP/SSE. Add "volatile" for native_cpuid(). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1261009542.2745.55.camel@sbs-t61.sc.intel.com> Cc: stable@kernel.org Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | x86, msr: msrs_alloc/free for CONFIG_SMP=nBorislav Petkov2009-12-161-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Randy Dunlap reported the following build error: "When CONFIG_SMP=n, CONFIG_X86_MSR=m: ERROR: "msrs_free" [drivers/edac/amd64_edac_mod.ko] undefined! ERROR: "msrs_alloc" [drivers/edac/amd64_edac_mod.ko] undefined!" This is due to the fact that <arch/x86/lib/msr.c> is conditioned on CONFIG_SMP and in the UP case we have only the stubs in the header. Fork off SMP functionality into a new file (msr-smp.c) and build msrs_{alloc,free} unconditionally. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Borislav Petkov <petkovbb@gmail.com> LKML-Reference: <20091216231625.GD27228@liondog.tnic> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config spaceAndreas Herrmann2009-12-162-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Use NodeId MSR to get NodeId and number of nodes per processor. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> LKML-Reference: <20091216144355.GB28798@alberich.amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | x86: Add IA32_TSC_AUX MSR and use itSheng Yang2009-12-162-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up write_tsc() and write_tscp_aux() by replacing hardcoded values. No change in functionality. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Cc: Avi Kivity <avi@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> LKML-Reference: <1260942485-19156-4-git-send-email-sheng@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'for-33' of git://repo.or.cz/linux-kbuildLinus Torvalds2009-12-171-0/+1
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-33' of git://repo.or.cz/linux-kbuild: (29 commits) net: fix for utsrelease.h moving to generated gen_init_cpio: fixed fwrite warning kbuild: fix make clean after mismerge kbuild: generate modules.builtin genksyms: properly consider EXPORT_UNUSED_SYMBOL{,_GPL}() score: add asm/asm-offsets.h wrapper unifdef: update to upstream revision 1.190 kbuild: specify absolute paths for cscope kbuild: create include/generated in silentoldconfig scripts/package: deb-pkg: use fakeroot if available scripts/package: add KBUILD_PKG_ROOTCMD variable scripts/package: tar-pkg: use tar --owner=root Kbuild: clean up marker net: add net_tstamp.h to headers_install kbuild: move utsrelease.h to include/generated kbuild: move autoconf.h to include/generated drop explicit include of autoconf.h kbuild: move compile.h to include/generated kbuild: drop include/asm kbuild: do not check for include/asm-$ARCH ... Fixed non-conflicting clean merge of modpost.c as per comments from Stephen Rothwell (modpost.c had grown an include of linux/autoconf.h that needed to be changed to generated/autoconf.h)
| * | kbuild: move asm-offsets.h to include/generatedSam Ravnborg2009-12-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The simplest method was to add an extra asm-offsets.h file in arch/$ARCH/include/asm that references the generated file. We can now migrate the architectures one-by-one to reference the generated file direct - and when done we can delete the temporary arch/$ARCH/include/asm/asm-offsets.h file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | Merge branch 'master' of ↵Linus Torvalds2009-12-161-1/+0
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (38 commits) direct I/O fallback sync simplification ocfs: stop using do_sync_mapping_range cleanup blockdev_direct_IO locking make generic_acl slightly more generic sanitize xattr handler prototypes libfs: move EXPORT_SYMBOL for d_alloc_name vfs: force reval of target when following LAST_BIND symlinks (try #7) ima: limit imbalance msg Untangling ima mess, part 3: kill dead code in ima Untangling ima mess, part 2: deal with counters Untangling ima mess, part 1: alloc_file() O_TRUNC open shouldn't fail after file truncation ima: call ima_inode_free ima_inode_free IMA: clean up the IMA counts updating code ima: only insert at inode creation time ima: valid return code from ima_inode_alloc fs: move get_empty_filp() deffinition to internal.h Sanitize exec_permission_lite() Kill cached_lookup() and real_lookup() Kill path_lookup_open() ... Trivial conflicts in fs/direct-io.c
| * | | sanitize do_pipe_flags() callers in archAl Viro2009-12-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * hpux_pipe() - no need to take BKL * sys32_pipe() in arch/x86/ia32 and xtensa_pipe() in arch/xtensa - no need at all, since both functions are open-coded sys_pipe() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-12-162-24/+16
|\ \ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix kprobes build with non-gawk awk x86: Split swiotlb initialization into two stages x86: Regex support and known-movable symbols for relocs, fix _end x86, msr: Remove incorrect, duplicated code in the MSR driver x86: Merge kernel_thread() x86: Sync 32/64-bit kernel_thread x86, 32-bit: Use same regs as 64-bit for kernel_thread_helper x86, 64-bit: Use user_mode() to determine new stack pointer in copy_thread() x86, 64-bit: Move kernel_thread to C x86-64, paravirt: Call set_iopl_mask() on 64 bits x86-32: Avoid pipeline serialization in PTREGSCALL1 and 2 x86: Merge sys_clone x86, 32-bit: Convert sys_vm86 & sys_vm86old x86: Merge sys_sigaltstack x86: Merge sys_execve x86: Merge sys_iopl x86-32: Add new pt_regs stubs cpumask: Use modern cpumask style in arch/x86/kernel/cpu/mcheck/mce-inject.c
| * | | Merge branch 'x86/asm' into x86/urgentIngo Molnar2009-12-151-22/+10
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: it's stable so lets push it upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | x86: Merge sys_cloneBrian Gerst2009-12-091-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 32-bit sys_clone to new PTREGSCALL stub, and merge with 64-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260403316-5679-7-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| | * | | x86, 32-bit: Convert sys_vm86 & sys_vm86oldBrian Gerst2009-12-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert these to new PTREGSCALL stubs. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260403316-5679-6-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| | * | | x86: Merge sys_sigaltstackBrian Gerst2009-12-091-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 32-bit sys_sigaltstack to PTREGSCALL2, and merge with 64-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260403316-5679-5-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| | * | | x86: Merge sys_execveBrian Gerst2009-12-091-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 32-bit sys_execve to PTREGSCALL3, and merge with 64-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260403316-5679-4-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| | * | | x86: Merge sys_ioplBrian Gerst2009-12-091-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 32-bit sys_iopl to PTREGSCALL1, and merge with 64-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260403316-5679-3-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | x86: Split swiotlb initialization into two stagesFUJITA Tomonori2009-12-151-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit f4780ca005404166cc40af77ef0e86132ab98a81 moves swiotlb initialization before dma32_free_bootmem(). It's supposed to fix a bug that the commit 75f1cdf1dda92cae037ec848ae63690d91913eac introduced, we initialize SWIOTLB right after dma32_free_bootmem so we wrongly steal memory area allocated for GART with broken BIOS earlier. However, the above commit introduced another problem, which likely breaks machines with huge amount of memory. Such a box use the majority of DMA32_ZONE so there is no memory for swiotlb. With this patch, the x86 IOMMU initialization sequence are: 1. We set swiotlb to 1 in the case of (max_pfn > MAX_DMA32_PFN && !no_iommu). If swiotlb usage is forced by the boot option, we go to the step 3 and finish (we don't try to detect IOMMUs). 2. We call the detection functions of all the IOMMUs. The detection function sets x86_init.iommu.iommu_init to the IOMMU initialization function (so we can avoid calling the initialization functions of all the IOMMUs needlessly). 3. We initialize swiotlb (and set dma_ops to swiotlb_dma_ops) if swiotlb is set to 1. 4. If the IOMMU initialization function doesn't need swiotlb (e.g. the initialization is sucessful) then sets swiotlb to zero. 5. If we find that swiotlb is set to zero, we free swiotlb resource. Reported-by: Yinghai Lu <yinghai@kernel.org> Reported-by: Roland Dreier <rdreier@cisco.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <20091215204729A.fujita.tomonori@lab.ntt.co.jp> Tested-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | gru: function to generate chipset IPI valuesJack Steiner2009-12-161-4/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create a function to generate the value that is written to the UV hub MMR to cause an IPI interrupt to be sent. The function will be used in the GRU message queue error recovery code that sends IPIs to nodes in remote partitions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | x86: uv: update XPC to handle updated BIOS interfaceRobin Holt2009-12-161-10/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The UV BIOS has moved the location of some of their pointers to the "partition reserved page" from memory into a uv hub MMR. The GRU does not support bcopy operations from MMR space so we need to special case the MMR addresses using VLOAD operations. Additionally, the BIOS call for registering a message queue watchlist has removed the 'blade' value and eliminated the structure that was being passed in. This is also reflected in this patch. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | x86: uv: introduce uv_gpa_is_mmrRobin Holt2009-12-161-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a mechanism for determining if a global physical address is pointing to a UV hub MMR. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | x86: uv: introduce a means to translate from gpa -> socket_paddrRobin Holt2009-12-161-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The UV BIOS has been updated to implement some of our interface functionality differently than originally expected. These patches update the kernel to the bios implementation and include a few minor bug fixes which prevent us from doing significant testing on real hardware. This patch: For SGI UV systems, translate from a global physical address back to a socket physical address. This does nothing to ensure the socket physical address is actually addressable by the kernel. That is the responsibility of the user of the function. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | dma-mapping: fix off-by-one error in dma_capable()Jan Beulich2009-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dma_mask is, when interpreted as address, the last valid byte, and hence comparison msut also be done using the last valid of the buffer in question. Also fix the open-coded instances in lib/swiotlb.c. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Becky Bruce <beckyb@kernel.crashing.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | elf: kill USE_ELF_CORE_DUMPChristoph Hellwig2009-12-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently all architectures but microblaze unconditionally define USE_ELF_CORE_DUMP. The microblaze omission seems like an error to me, so let's kill this ifdef and make sure we are the same everywhere. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: <linux-arch@vger.kernel.org> Cc: Michal Simek <michal.simek@petalogix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | ptrace: x86: implement user_single_step_siginfo()Oleg Nesterov2009-12-161-0/+2
| |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suggested by Roland. Implement user_single_step_siginfo() for x86. Extract this code from send_sigtrap(). Since x86 calls tracehook_report_syscall_exit(step => 0) the new helper is not used yet. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Cc: <linux-arch@vger.kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'core-locking-for-linus' of ↵Linus Torvalds2009-12-154-50/+50
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits) clockevents: Convert to raw_spinlock clockevents: Make tick_device_lock static debugobjects: Convert to raw_spinlocks perf_event: Convert to raw_spinlock hrtimers: Convert to raw_spinlocks genirq: Convert irq_desc.lock to raw_spinlock smp: Convert smplocks to raw_spinlocks rtmutes: Convert rtmutex.lock to raw_spinlock sched: Convert pi_lock to raw_spinlock sched: Convert cpupri lock to raw_spinlock sched: Convert rt_runtime_lock to raw_spinlock sched: Convert rq->lock to raw_spinlock plist: Make plist debugging raw_spinlock aware bkl: Fixup core_lock fallout locking: Cleanup the name space completely locking: Further name space cleanups alpha: Fix fallout from locking changes locking: Implement new raw_spinlock locking: Convert raw_rwlock functions to arch_rwlock locking: Convert raw_rwlock to arch_rwlock ...
| * | | | locking: Convert raw_rwlock functions to arch_rwlockThomas Gleixner2009-12-141-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Name space cleanup for rwlock functions. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
| * | | | locking: Convert raw_rwlock to arch_rwlockThomas Gleixner2009-12-142-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not strictly necessary for -rt as -rt does not have non sleeping rwlocks, but it's odd to not have a consistent naming convention. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
| * | | | locking: Convert __raw_spin* functions to arch_spin*Thomas Gleixner2009-12-142-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Name space cleanup. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
| * | | | locking: Rename __RAW_SPIN_LOCK_UNLOCKED to __ARCH_SPIN_LOCK_UNLOCKEDThomas Gleixner2009-12-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Further name space cleanup. No functional change Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
| * | | | locking: Convert raw_spinlock to arch_spinlockThomas Gleixner2009-12-144-30/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The raw_spin* namespace was taken by lockdep for the architecture specific implementations. raw_spin_* would be the ideal name space for the spinlocks which are not converted to sleeping locks in preempt-rt. Linus suggested to convert the raw_ to arch_ locks and cleanup the name space instead of using an artifical name like core_spin, atomic_spin or whatever No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
* | | | | cs5535: drop the Geode-specific MFGPT/GPIO codeAndres Salomon2009-12-151-117/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With generic modular drivers handling all of this stuff, the geode-specific code can go away. The cs5535-gpio, cs5535-mfgpt, and cs5535-clockevt drivers now handle this. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cs5535: define lxfb/gxfb MSRs in linux/cs5535.hAndres Salomon2009-12-151-13/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ..and include them in the lxfb/gxfb drivers rather than asm/geode.h (where possible). Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cs5535: move VSA2 checks into linux/cs5535.hAndres Salomon2009-12-151-19/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cs5535: move the DIVIL MSR definition into linux/cs5535.hAndres Salomon2009-12-151-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only thing that uses this is the reboot_fixups code. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cs5535: add a generic MFGPT driverAndres Salomon2009-12-151-40/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is based on the old code on arch/x86/kernel/mfgpt_32.c, except it's not x86 specific, it's modular, and it makes use of a PCI BAR rather than a random MSR. Currently module unloading is not supported; it's uncertain whether or not it can be made work with the hardware. [akpm@linux-foundation.org: add X86 dependency] Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | ALSA: cs5535audio: free OLPC quirks from reliance on MGEODE_LX cpu optimizationAndres Salomon2009-12-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, OLPC support for the mic extensions was only enabled in the ALSA driver if CONFIG_OLPC and CONFIG_MGEODE_LX were both set. This was because the old geode GPIO code was written in a manner that assumed CONFIG_MGEODE_LX. With the new cs553x-gpio driver, this is no longer the case; as such, we can drop the requirement on CONFIG_MGEODE_LX and instead include a requirement on GPIOLIB. We use the generic GPIO API rather than the cs553x-specific API. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | cs5535-gpio: add AMD CS5535/CS5536 GPIO driver supportAndres Salomon2009-12-151-27/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This creates a CS5535/CS5536 GPIO driver which uses a gpio_chip backend (allowing GPIO users to use the generic GPIO API if desired) while also allowing architecture-specific users directly (via the cs5535_gpio_* functions). Tested on an OLPC machine. Some Leemotes also use CS5536 (with a mips cpu), which is why this is in drivers/gpio rather than arch/x86. Currently, it conflicts with older geode GPIO support; once MFGPT support is reworked to also be more generic, the older geode code will be removed. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Reviewed-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | hugetlb: add generic definition of NUMA_NO_NODELee Schermerhorn2009-12-151-2/+7
|/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move definition of NUMA_NO_NODE from ia64 and x86_64 arch specific headers to generic header 'linux/numa.h' for use in generic code. NUMA_NO_NODE replaces bare '-1' where it's used in this series to indicate "no node id specified". Ultimately, it can be used to replace the -1 elsewhere where it is used similarly. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Andi Kleen <andi@firstfloor.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Adam Litke <agl@us.ibm.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Eric Whitney <eric.whitney@hp.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-12-143-2/+4
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, mce: Clean up thermal init by introducing intel_thermal_supported() x86, mce: Thermal monitoring depends on APIC being enabled x86: Gart: fix breakage due to IOMMU initialization cleanup x86: Move swiotlb initialization before dma32_free_bootmem x86: Fix build warning in arch/x86/mm/mmio-mod.c x86: Remove usedac in feature-removal-schedule.txt x86: Fix duplicated UV BAU interrupt vector nvram: Fix write beyond end condition; prove to gcc copy is safe mm: Adjust do_pages_stat() so gcc can see copy_from_user() is safe x86: Limit the number of processor bootup messages x86: Remove enabling x2apic message for every CPU doc: Add documentation for bootloader_{type,version} x86, msr: Add support for non-contiguous cpumasks x86: Use find_e820() instead of hard coded trampoline address x86, AMD: Fix stale cpuid4_info shared_map data in shared_cpu_map cpumasks Trivial percpu-naming-introduced conflicts in arch/x86/kernel/cpu/intel_cacheinfo.c
| * | | x86: Fix duplicated UV BAU interrupt vectorCliff Wickman2009-12-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Interrupt vector 0xec has been doubly defined in irq_vectors.h It seems arbitrary whether LOCAL_PENDING_VECTOR or UV_BAU_MESSAGE is the higher number. As long as they are unique. If they are not unique we'll hit a BUG in alloc_system_vector(). Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: <stable@kernel.org> LKML-Reference: <E1NJ9Pe-0004P7-0Q@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, msr: Add support for non-contiguous cpumasksBorislav Petkov2009-12-111-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current rd/wrmsr_on_cpus helpers assume that the supplied cpumasks are contiguous. However, there are machines out there like some K8 multinode Opterons which have a non-contiguous core enumeration on each node (e.g. cores 0,2 on node 0 instead of 0,1), see http://www.gossamer-threads.com/lists/linux/kernel/1160268. This patch fixes out-of-bounds writes (see URL above) by adding per-CPU msr structs which are used on the respective cores. Additionally, two helpers, msrs_{alloc,free}, are provided for use by the callers of the MSR accessors. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Aristeu Rozanski <aris@redhat.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <20091211171440.GD31998@aftab> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | Merge commit 'linus/master' into x86/urgentH. Peter Anvin2009-12-114-6/+6
| |\ \ \
| * | | | x86: Use find_e820() instead of hard coded trampoline addressYinghai Lu2009-12-111-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jens found the following crash/regression: [ 0.000000] found SMP MP-table at [ffff8800000fdd80] fdd80 [ 0.000000] Kernel panic - not syncing: Overlapping early reservations 12-f011 MP-table mpc to 0-fff BIOS data page and [ 0.000000] Kernel panic - not syncing: Overlapping early reservations 12-f011 MP-table mpc to 6000-7fff TRAMPOLINE and bisected it to b24c2a9 ("x86: Move find_smp_config() earlier and avoid bootmem usage"). It turns out the BIOS is using the first 64k for mptable, without reserving it. So try to find good range for the real-mode trampoline instead of hard coding it, in case some bios tries to use that range for sth. Reported-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Jens Axboe <jens.axboe@oracle.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> LKML-Reference: <4B21630A.6000308@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-12-141-13/+91
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (34 commits) m68k: rename global variable vmalloc_end to m68k_vmalloc_end percpu: add missing per_cpu_ptr_to_phys() definition for UP percpu: Fix kdump failure if booted with percpu_alloc=page percpu: make misc percpu symbols unique percpu: make percpu symbols in ia64 unique percpu: make percpu symbols in powerpc unique percpu: make percpu symbols in x86 unique percpu: make percpu symbols in xen unique percpu: make percpu symbols in cpufreq unique percpu: make percpu symbols in oprofile unique percpu: make percpu symbols in tracer unique percpu: make percpu symbols under kernel/ and mm/ unique percpu: remove some sparse warnings percpu: make alloc_percpu() handle array types vmalloc: fix use of non-existent percpu variable in put_cpu_var() this_cpu: Use this_cpu_xx in trace_functions_graph.c this_cpu: Use this_cpu_xx for ftrace this_cpu: Use this_cpu_xx in nmi handling this_cpu: Use this_cpu operations in RCU this_cpu: Use this_cpu ops for VM statistics ... Fix up trivial (famous last words) global per-cpu naming conflicts in arch/x86/kvm/svm.c mm/slab.c
| * | | | percpu: remove some sparse warningsTejun Heo2009-10-291-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the following changes to remove some sparse warnings. * Make DEFINE_PER_CPU_SECTION() declare __pcpu_unique_* before defining it. * Annotate pcpu_extend_area_map() that it is entered with pcpu_lock held, releases it and then reacquires it. * Make percpu related macros use unique nested variable names. * While at it, add pcpu prefix to __size_call[_return]() macros as to-be-implemented sparse annotations will add percpu specific stuff to these macros. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au>
| * | | | this_cpu: Implement X86 optimized this_cpu operationsChristoph Lameter2009-10-031-0/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basically the existing percpu ops can be used for this_cpu variants that allow operations also on dynamically allocated percpu data. However, we do not pass a reference to a percpu variable in. Instead a dynamically or statically allocated percpu variable is provided. Preempt, the non preempt and the irqsafe operations generate the same code. It will always be possible to have the requires per cpu atomicness in a single RMW instruction with segment override on x86. 64 bit this_cpu operations are not supported on 32 bit. Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Tejun Heo <tj@kernel.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 22:27:59 +0000