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2008-12-03powerpc: Remove unncessary SPE related compiler flagKumar Gala
After testing of various compiler flag combinations by Nate Case it was determined that -mabi=no-spe has no impact on the compiler generating SPE instructions. Only -mno-spe and -mspe=no do. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc and sparc: Introduce dev_archdata node accessorsAnton Vorontsov
The name of the device_node field differ across the platforms, so we have to implement inlined accessors. This is needed to avoid ugly #ifdef in the generic code. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc/ibmebus: Get rid of the IRQ mapping in ibmebus_free_irq()Sebastien Dugue
ibmebus_free_irq() frees the IRQ but does not remove its mapping, which results in stale entries in the map. This fixes it by adding a call to irq_dispose_mapping() in ibmebus_free_irq(). Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Eliminate NULL test and memset after alloc_bootmemJulia Lawall
As noted by Akinobu Mita in commit b1fceac2 ("x86: remove unnecessary memset and NULL check after alloc_bootmem()"), alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. This was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; statement S; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E ( - BUG_ON (E == NULL); | - if (E == NULL) S ) @@ expression E,E1; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E - memset(E,0,E1); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add sync_*_for_* to dma_opsBecky Bruce
We need to swap these out once we start using swiotlb, so add them to dma_ops. Create CONFIG_PPC_NEED_DMA_SYNC_OPS Kconfig option; this is currently enabled automatically if we're CONFIG_NOT_COHERENT_CACHE. In the future, this will also be enabled for builds that need swiotlb. If PPC_NEED_DMA_SYNC_OPS is not defined, the dma_sync_*_for_* ops compile to nothing. Otherwise, they access the dma_ops pointers for the sync ops. This patch also changes dma_sync_single_range_* to actually sync the range - previously it was using a generous dma_sync_single. dma_sync_single_* is now implemented as a dma_sync_single_range with an offset of 0. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Allow the max stack trace depth to be configuredJohannes Berg
On my screen, when something crashes, I only have space for maybe 16 functions of the stack trace before the information above it scrolls off the screen. It's easy to hack the kernel to print out only that much, but it's harder to remember to do it. This introduces a config option for it so that I can keep the setting in my config. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Use RCU based pte freeing mechanism for all powerpcKumar Gala
Refactor the RCU based pte free code that was used on ppc64 to be used on all powerpc. Additionally refactor pte_free() & pte_free_kernel() into common code between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add a local_flush_tlb_page to handle kmap_atomic invalidatesKumar Gala
The tlb invalidates in kmap_atomic/kunmap_atomic can be called from IRQ context, however they are only local invalidates (on the processor that the kmap was called on). In the future we want to use IPIs to do tlb invalidates this causes issue since flush_tlb_page() is considered a broadcast invalidate. Add local_flush_tlb_page() as a non-broadcast invalidate and use it in kmap_atomic() since we don't have enough information in the flush_tlb_page() call to determine its local. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: hash_page_sync should only be used on SMP & STD_MMU_32Kumar Gala
Clean up the ifdefs so we only use hash_page_sync if we have CONFIG_SMP && CONFIG_PPC_STD_MMU_32. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Fix ppc32 mm_struct CPU tracking in SMPBenjamin Herrenschmidt
The 32-bit hash code didn't need it so far so we don't update mm->cpu_vm_mask on context switch. This however will break when we merge the RCU based page table freeing patch and other upcoming 32-bit embedded SMP work, so this adds the update. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add MSR[CE, DE] to the MSR bits we print on show_regs()Kumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03Merge branch 'merge'Paul Mackerras
2008-12-03powerpc: Fix dma_map_sg() cache flushing on non coherent platformsBenjamin Herrenschmidt
On PowerPC 4xx or other non cache-coherent platforms, we lost the appropriate cache flushing in dma_map_sg() when merging the 32 and 64-bit DMA code (commit 4fc665b88a79a45bae8bbf3a05563c27c7337c3d, "powerpc: Merge 32 and 64-bit dma code"). This restores it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-02Merge branch 'kvm-updates/2.6.28' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: MMU: avoid creation of unreachable pages in the shadow KVM: ppc: stop leaking host memory on VM exit KVM: MMU: fix sync of ptes addressed at owner pagetable KVM: ia64: Fix: Use correct calling convention for PAL_VPS_RESUME_HANDLER KVM: ia64: Fix incorrect kbuild CFLAGS override KVM: VMX: Fix interrupt loss during race with NMI KVM: s390: Fix problem state handling in guest sigp handler
2008-12-02powerpc: Use physical cpu id when setting the processor affinityKumar Gala
In the CONFIG_SMP case the irq_choose_cpu() code was returning back a logical cpu id not the physical id. We were writing that directly into the HW register. We need to be calling get_hard_smp_processor_id() so irq_choose_cpu() always returns a physical cpu id. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-02Merge branch 'linus' into cpus4096Ingo Molnar
Conflicts: kernel/trace/ring_buffer.c
2008-12-01powerpc: Fix build for 32-bit SMP configsMilton Miller
attr_smt_snooze_delay is only defined for CONFIG_PPC64, so protect the attribute removal with the same condition. This fixes this build error on 32-bit SMP configurations: /data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c: In function ‘unregister_cpu_online’: /data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: ‘attr_smt_snooze_delay’ undeclared (first use in this function) /data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: (Each undeclared identifier is reported only once /data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: for each function it appears in.) Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-30Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Fix system calls on Cell entered with XER.SO=1 powerpc/cell: Fix GDB watchpoints, again powerpc/mpic: Don't reset affinity for secondary MPIC on boot powerpc/cell/axon-msi: Retry on missing interrupt powerpc: Fix boot freeze on machine with empty memory node powerpc: Fix IRQ assignment for some PCIe devices powerpc/spufs: Fix spinning in spufs_ps_fault on signal powerpc/mpc832x_rdb: fix swapped ethernet ids powerpc: Use generic PHY driver for Marvell 88E1111 PHY on GE Fanuc SBC610 powerpc/85xx: L2 cache size wrong in 8572DS dts powerpc/virtex: Update defconfigs powerpc/52xx: update defconfigs xsysace: Fix driver to use resource_size_t instead of unsigned long powerpc/virtex: fix various format/casting printk mismatches powerpc/mpc5200: fix bestcomm Kconfig dependencies powerpc/44x: Fix 460EX/460GT machine check handling powerpc/40x: Limit allocable DRAM during early mapping
2008-12-01powerpc: Fix system calls on Cell entered with XER.SO=1Paul Mackerras
It turns out that on Cell, on a kernel with CONFIG_VIRT_CPU_ACCOUNTING = y, if a program sets the SO (summary overflow) bit in the XER and then does a system call, the SO bit in CR0 will be set on return regardless of whether the system call detected an error. Since CR0.SO is used as the error indication from the system call, this means that all system calls appear to fail. The reason is that the workaround for the timebase bug on Cell uses a compare instruction. With CONFIG_VIRT_CPU_ACCOUNTING = y, the ACCOUNT_CPU_USER_ENTRY macro reads the timebase, so we end up doing a compare instruction, which copies XER.SO to CR0.SO. Since we were doing this in the system call entry patch after clearing CR0.SO but before saving the CR, this meant that the saved CR image had CR0.SO set if XER.SO was set on entry. This fixes it by moving the clearing of CR0.SO to after the ACCOUNT_CPU_USER_ENTRY call in the system call entry path. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-12-01powerpc/cell: Fix GDB watchpoints, againArnd Bergmann
An earlier patch from Jens Osterkamp attempted to fix GDB watchpoints by enabling the DABRX register at boot time. Unfortunately, this did not work on SMP setups, where secondary CPUs were still using the power-on DABRX value. This introduces the same change for secondary CPUs on cell as well. Reported-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Tested-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01powerpc/mpic: Don't reset affinity for secondary MPIC on bootArnd Bergmann
Kexec/kdump currently fails on the IBM QS2x blades when the kexec happens on a CPU other than the initial boot CPU. It turns out that this is the result of mpic_init trying to set affinity of each interrupt vector to the current boot CPU. As far as I can tell, the same problem is likely to exist on any secondary MPIC, because they have to deliver interrupts to the first output all the time. There are two potential solutions for this: either not set up affinity at all for secondary MPICs, or assume that a single CPU output is connected to the upstream interrupt controller and hardcode affinity to that per architecture. This patch implements the second approach, defaulting to the first output. Currently, all known secondary MPICs are routed to their upstream port using the first destination, so we hardcode that. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01powerpc/cell/axon-msi: Retry on missing interruptArnd Bergmann
The MSI capture logic for the axon bridge can sometimes lose interrupts in case of high DMA and interrupt load, when it signals an MSI interrupt to the MPIC interrupt controller while we are already handling another MSI. Each MSI vector gets written into a FIFO buffer in main memory using DMA, and that DMA access is normally flushed by the actual interrupt packet on the IOIF. An MMIO register in the MSIC holds the position of the last entry in the FIFO buffer that was written. However, reading that position does not flush the DMA, so that we can observe stale data in the buffer. In a stress test, we have observed the DMA to arrive up to 14 microseconds after reading the register. This patch works around this problem by retrying the access to the FIFO buffer. We can reliably detect the conditioning by writing an invalid MSI vector into the FIFO buffer after reading from it, assuming that all MSIs we get are valid. After detecting an invalid MSI vector, we udelay(1) in the interrupt cascade for up to 100 times before giving up. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01powerpc: Fix boot freeze on machine with empty memory nodeDave Hansen
I got a bug report about a distro kernel not booting on a particular machine. It would freeze during boot: > ... > Could not find start_pfn for node 1 > [boot]0015 Setup Done > Built 2 zonelists in Node order, mobility grouping on. Total pages: 123783 > Policy zone: DMA > Kernel command line: > [boot]0020 XICS Init > [boot]0021 XICS Done > PID hash table entries: 4096 (order: 12, 32768 bytes) > clocksource: timebase mult[7d0000] shift[22] registered > Console: colour dummy device 80x25 > console handover: boot [udbg0] -> real [hvc0] > Dentry cache hash table entries: 1048576 (order: 7, 8388608 bytes) > Inode-cache hash table entries: 524288 (order: 6, 4194304 bytes) > freeing bootmem node 0 I've reproduced this on 2.6.27.7. It is caused by commit 8f64e1f2d1e09267ac926e15090fd505c1c0cbcb ("powerpc: Reserve in bootmem lmb reserved regions that cross NUMA nodes"). The problem is that Jon took a loop which was (in pseudocode): for_each_node(nid) NODE_DATA(nid) = careful_alloc(nid); setup_bootmem(nid); reserve_node_bootmem(nid); and broke it up into: for_each_node(nid) NODE_DATA(nid) = careful_alloc(nid); setup_bootmem(nid); for_each_node(nid) reserve_node_bootmem(nid); The issue comes in when the 'careful_alloc()' is called on a node with no memory. It falls back to using bootmem from a previously-initialized node. But, bootmem has not yet been reserved when Jon's patch is applied. It gives back bogus memory (0xc000000000000000) and pukes later in boot. The following patch collapses the loop back together. It also breaks the mark_reserved_regions_for_nid() code out into a function and adds some comments. I think a huge part of introducing this bug is because for loop was too long and hard to read. The actual bug fix here is the: + if (end_pfn <= node->node_start_pfn || + start_pfn >= node_end_pfn) + continue; Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01powerpc: Fix IRQ assignment for some PCIe devicesAdhemerval Zanella
Currently, some PCIe devices on POWER6 machines do not get interrupts assigned correctly. The problem is that OF doesn't create an "interrupt" property for them. The fix is for of_irq_map_pci to fall back to using the value in the PCI interrupt-pin register in config space, as we do when there is no OF device-tree node for the device. I have verified that this works fine with a pair of Squib-E SAS adapter on a P6-570. Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-30remove __ARCH_WANT_COMPAT_SYS_PTRACEChristoph Hellwig
All architectures now use the generic compat_sys_ptrace, as should every new architecture that needs 32bit compat (if we'll ever get another). Remove the now superflous __ARCH_WANT_COMPAT_SYS_PTRACE define, and also kill a comment about __ARCH_SYS_PTRACE that was added after __ARCH_SYS_PTRACE was already gone. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30powerpc set_huge_psize() false positiveAl Viro
called only from __init, calls __init. Incidentally, it ought to be static in file. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-28powerpc/ppc32: static ftrace fixes for PPC32Steven Rostedt
Impact: fix for PowerPC 32 code There were some early init code that was not safe for static ftrace to boot on my PowerBook. This code must only use relative addressing, and static mcount performs a compare of the ftrace_trace_function pointer, and gets that with an absolute address. In the early init boot up code, this will cause a fault. This patch removes tracing from the files containing the offending functions. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28powerpc: ftrace, use create_branchSteven Rostedt
Impact: clean up Paul Mackerras pointed out that the code to determine if the branch can reach the destination is incorrect. Michael Ellerman suggested to pull out the code from create_branch and use that. Simply using create_branch is probably the best. Reported-by: Michael Ellerman <michael@ellerman.id.au> Reported-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28powerpc: ftrace, added missing icache flushSteven Rostedt
Impact: fix to PowerPC code modification After modifying code it is essential to flush the icache. This patch adds the missing flush. Reported-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28powerpc: ftrace, fix cast aliasing and add code verificationSteven Rostedt
Impact: clean up and robustness addition This patch addresses the comments made by Paul Mackerras. It removes the type casting between unsigned int and unsigned char pointers, and replaces them with a use of all unsigned int. Verification that the jump is indeed made to a trampoline has also been added. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-28powerpc: ftrace, do nothing in mcount call for dyn ftraceSteven Rostedt
Impact: quicken mcount calls that are not replaced by dyn ftrace Dynamic ftrace no longer does on the fly recording of mcount locations. The mcount locations are now found at compile time. The mcount function no longer needs to store registers and call a stub function. It can now just simply return. Since there are some functions that do not get converted to a nop (.init sections and other code that may disappear), this patch should help speed up that code. Also, the stub for mcount on PowerPC 32 can not be a simple branch link register like it is on PowerPC 64. According to the ABI specification: "The _mcount routine is required to restore the link register from the stack so that the profiling code can be inserted transparently, whether or not the profiled function saves the link register itself." This means that we must restore the link register that was used to make the call to mcount. The minimal mcount function for PPC32 ends up being: mcount: mflr r0 mtctr r0 lwz r0, 4(r1) mtlr r0 bctr Where we move the link register used to call mcount into the ctr register, and then restore the link register from the stack. Then we use the ctr register to jump back to the mcount caller. The r0 register is free for us to use. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-26sched: convert struct root_domain to cpumask_var_t, fixIngo Molnar
Mathieu Desnoyers reported this build failure on powerpc: kernel/sched.c: In function 'sd_init_NODE': kernel/sched.c:7319: error: non-static initialization of a flexible array member kernel/sched.c:7319: error: (near initialization for '(anonymous)') this happens because .span changed to cpumask_var_t, hence the static CPU_MASK_NONE initializers in the SD_*_INIT templates are not type-correct anymore. Remove them, as they default to empty anyway. Also remove them from IA64, MIPS and SH. Reported-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-25KVM: ppc: stop leaking host memory on VM exitHollis Blanchard
When the VM exits, we must call put_page() for every page referenced in the shadow TLB. Without this patch, we usually leak 30-50 host pages (120 - 200 KiB with 4 KiB pages). The maximum number of pages leaked is the size of our shadow TLB, 64 pages. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-11-24Merge branches 'sched/core', 'core/core' and 'tracing/core' into cpus4096Ingo Molnar
2008-11-24Merge branch 'merge' of ↵Paul Mackerras
git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge
2008-11-24Merge branch 'merge' of ↵Paul Mackerras
ssh://master.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
2008-11-24Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into mergePaul Mackerras
2008-11-21powerpc/spufs: Fix spinning in spufs_ps_fault on signalJeremy Kerr
Currently, we can end up in an infinite loop if we get a signal while the kernel has faulted in spufs_ps_fault. Eg: alarm(1); write(fd, some_spu_psmap_register_address, 4); - the write's copy_from_user will fault on the ps mapping, and signal_pending will be non-zero. Because returning from the fault handler will never clear TIF_SIGPENDING, so we'll just keep faulting, resulting in an unkillable process using 100% of CPU. This change returns VM_FAULT_SIGBUS if there's a fatal signal pending, letting us escape the loop. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-11-20powerpc/ppc32: ftrace, dynamic ftrace to handle modulesSteven Rostedt
Impact: add ability to trace modules on 32 bit PowerPC This patch performs the necessary trampoline calls to handle modules with dynamic ftrace on 32 bit PowerPC. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-20powerpc/ppc64: ftrace, handle module trampolines for dyn ftraceSteven Rostedt
Impact: Allow 64 bit PowerPC to trace modules with dynamic ftrace This adds code to handle the PPC64 module trampolines, and allows for PPC64 to use dynamic ftrace. Thanks to Paul Mackerras for these updates: - fix the mod and rec->arch.mod NULL checks. - fix to is_bl_op compare. Thanks to Milton Miller for: - finding the nasty race with using two nops, and recommending instead that I use a branch 8 forward. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-20powerpc: ftrace, use probe_kernel API to modify codeSteven Rostedt
Impact: use cleaner probe_kernel API over assembly Using probe_kernel_read/write interface is a much cleaner approach than the current assembly version. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-20powerpc: ftrace, convert to new dynamic ftrace arch APISteven Rostedt
Impact: update to PowerPC ftrace arch API This patch converts PowerPC to use the new dynamic ftrace arch API. Thanks to Paul Mackennas for pointing out the mistakes of my original test_24bit_addr function. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-20powerpc: ftrace, do not latency trace idleSteven Rostedt
Impact: fix for irq off latency tracer When idle is called, interrupts are disabled, but the idle function will still wake up on an interrupt. The problem is that the interrupt disabled latency tracer will take this call to idle as a latency. This patch disables the latency tracing when going into idle. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-19powerpc/mpc832x_rdb: fix swapped ethernet idsMichael Barkowski
ethernet0 (called FSL UEC0 in U-Boot) should be enet1 (UCC3/eth1), and ethernet1 should be enet0 (UCC2/eth0), to be consistent with U-Boot so that the interfaces do not swap addresses when control passes from U-Boot to the kernel. Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com> Acked-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-11-19powerpc: Use generic PHY driver for Marvell 88E1111 PHY on GE Fanuc SBC610Martyn Welch
The Marvell PHY driver is currently being used for the 88E1111 on the SBC610. This driver is causing the link to run in 10/Half mode, the generic PHY driver is correctly configuring the PHY as 1000/Full. Edit default config to use generic PHY driver. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-11-19powerpc/85xx: L2 cache size wrong in 8572DS dtsTrent Piepho
It's 1MB, not 512KB. Newer U-Boots will fix this entry, but that's no reason to have the wrong value in the dts. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-11-19Merge branch 'linus' into sched/coreIngo Molnar
Conflicts: kernel/Makefile
2008-11-19powerpc/mpic: Use new smp_request_message_ipiMilton Miller
MPIC has 4 ipis, so it can use the new smp_request_message_ipi to reduce pathlength when receiving an ipi. This has the side effect of using the common ipi names, and also continuing to try request the remaining messages when one fails. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-19powerpc: Provide a separate handler for each IPI actionMilton Miller
With the new generic smp call function helpers, I noticed the code in smp_message_recv was a single function call in many cases. While getting the message number from the ipi data is easy, we can reduce the path length by a function and data-dependent switch by registering seperate IPI actions for these simple calls. Originally I left the ipi action array exposed, but then I realized the registration code should be common too. The three users each had their own name array, so I made a fourth to convert all users to use a common one. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-11-19powerpc: Correct page-in counter for CMM with 64k pagesRobert Jennings
Linux will report the number of page-ins so that the hypervisor can better determine partition memory pressure. The hardware page size and the OS page size can be different. In the case where the hardware page size is 4k and the OS is running with 64k pages the code in commit 409001948d9f221c94a61c3ee96de112755fc04d ("powerpc: Update page-in counter for CMM") would under-report the number of pages. This corrects the reporting to the hypervisor by incrementing the page_in count by 1 << PAGE_FACTOR each time. Reported-by: Andrew Theurer <habanero@linux.vnet.ibm.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>