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| * | | | Merge ../powerpc-mergePaul Mackerras2006-02-246-64/+15Star
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| * | | | | [PATCH] powerpc: trivial: modify comments to refer to new location of filesJon Mason2006-02-102-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes all self references and fixes references to files in the now defunct arch/ppc64 tree. I think this accomplises everything wanted, though there might be a few references I missed. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [PATCH] powerpc: Move pSeries firmware feature setup into platforms/pseriesMichael Ellerman2006-02-101-9/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have some stuff in firmware.h and kernel/firmware.c that is #ifdef CONFIG_PPC_PSERIES. Move it all into platforms/pseries. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | Merge ../powerpc-mergePaul Mackerras2006-02-105-3/+13
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| * | | | | | [PATCH] powerpc: Put parameter names in lmb.h prototypesMichael Ellerman2006-02-071-9/+8Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prototypes aren't so useful without parameter names, add them to lmb.h based on the names in lmb.c Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [PATCH] powerpc: Move LMB_ALLOC_ANYWHERE out of lmb.hMichael Ellerman2006-02-071-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LMB_ALLOC_ANYWHERE doesn't need to be part of the API, it's only used in lmb.c - so move it out of the header file. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | | [PATCH] powerpc: Always panic if lmb_alloc() failsMichael Ellerman2006-02-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently most callers of lmb_alloc() don't check if it worked or not, if it ever does weird bad things will probably happen. The few callers who do check just panic or BUG_ON. So make lmb_alloc() panic internally, to catch bugs at the source. The few callers who did check the result no longer need to. The only caller that did anything interesting with the return result was careful_allocation(). For it we create __lmb_alloc_base() which _doesn't_ panic automatically, a little messy, but passable. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | | | | | [PATCH] hugepage: Fix hugepage logic in free_pgtables()David Gibson2006-03-221-5/+0Star
| |_|_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | free_pgtables() has special logic to call hugetlb_free_pgd_range() instead of the normal free_pgd_range() on hugepage VMAs. However, the test it uses to do so is incorrect: it calls is_hugepage_only_range on a hugepage sized range at the start of the vma. is_hugepage_only_range() will return true if the given range has any intersection with a hugepage address region, and in this case the given region need not be hugepage aligned. So, for example, this test can return true if called on, say, a 4k VMA immediately preceding a (nicely aligned) hugepage VMA. At present we get away with this because the powerpc version of hugetlb_free_pgd_range() is just a call to free_pgd_range(). On ia64 (the only other arch with a non-trivial is_hugepage_only_range()) we get away with it for a different reason; the hugepage area is not contiguous with the rest of the user address space, and VMAs are not permitted in between, so the test can't return a false positive there. Nonetheless this should be fixed. We do that in the patch below by replacing the is_hugepage_only_range() test with an explicit test of the VMA using is_vm_hugetlb_page(). This in turn changes behaviour for platforms where is_hugepage_only_range() returns false always (everything except powerpc and ia64). We address this by ensuring that hugetlb_free_pgd_range() is defined to be identical to free_pgd_range() (instead of a no-op) on everything except ia64. Even so, it will prevent some otherwise possible coalescing of calls down to free_pgd_range(). Since this only happens for hugepage VMAs, removing this small optimization seems unlikely to cause any trouble. This patch causes no regressions on the libhugetlbfs testsuite - ppc64 POWER5 (8-way), ppc64 G5 (2-way) and i386 Pentium M (UP). Signed-off-by: David Gibson <dwg@au1.ibm.com> Cc: William Lee Irwin III <wli@holomorphy.com> Acked-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | | | [PATCH] powerpc: properly configure DDR/P5IOC children devsJohn Rose2006-03-161-0/+1
| |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dynamic add path for PCI Host Bridges can fail to configure children adapters under P5IOC controllers. It fails to properly fixup bus/device resources, and it fails to properly enable EEH. Both of these steps need to occur before any children devices are enabled in pci_bus_add_devices(). Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2006-03-093-7/+5Star
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge: powerpc: Fix various syscall/signal/swapcontext bugs [PATCH] powerpc: incorrect rmo_top handling in prom_init [PATCH] powerpc: Fix incorrect pud_ERROR() message [PATCH] powerpc: Expose SMT and L1 icache snoop userland features [PATCH] powerpc: Fix windfarm_pm112 not starting all control loops [PATCH] powerpc: Fix old g5 issues with windfarm powerpc32: Fix timebase synchronization on 32-bit powermacs powerpc: Turn off verbose debug output in powermac platform functions powerpc: Fix might-sleep warning in program check exception handler
| * | | | | powerpc: Fix various syscall/signal/swapcontext bugsPaul Mackerras2006-03-081-6/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A careful reading of the recent changes to the system call entry/exit paths revealed several problems, plus some things that could be simplified and improved: * 32-bit wasn't testing the _TIF_NOERROR bit in the syscall fast exit path, so it was only doing anything with it once it saw some other bit being set. In other words, the noerror behaviour would apply to the next system call where we had to reschedule or deliver a signal, which is not necessarily the current system call. * 32-bit wasn't doing the call to ptrace_notify in the syscall exit path when the _TIF_SINGLESTEP bit was set. * _TIF_RESTOREALL was in both _TIF_USER_WORK_MASK and _TIF_PERSYSCALL_MASK, which is odd since _TIF_RESTOREALL is only set by system calls. I took it out of _TIF_USER_WORK_MASK. * On 64-bit, _TIF_RESTOREALL wasn't causing the non-volatile registers to be restored (unless perhaps a signal was delivered or the syscall was traced or single-stepped). Thus the non-volatile registers weren't restored on exit from a signal handler. We probably got away with it mostly because signal handlers written in C wouldn't alter the non-volatile registers. * On 32-bit I simplified the code and made it more like 64-bit by making the syscall exit path jump to ret_from_except to handle preemption and signal delivery. * 32-bit was calling do_signal unnecessarily when _TIF_RESTOREALL was set - but I think because of that 32-bit was actually restoring the non-volatile registers on exit from a signal handler. * I changed the order of enabling interrupts and saving the non-volatile registers before calling do_syscall_trace_leave; now we enable interrupts first. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [PATCH] powerpc: Fix incorrect pud_ERROR() messageDavid Gibson2006-03-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc pud_ERROR() function misleadingly prints a message indicating a pmd error. This patch fixes it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | | [PATCH] powerpc: Expose SMT and L1 icache snoop userland featuresBenjamin Herrenschmidt2006-03-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes userland aware of the icache snoop capability of the POWER5 (and possibly others in the future) and of SMT capabilities. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | | | | [PATCH] fix kexec asmMichael Matz2006-03-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While testing kexec and kdump we hit problems where the new kernel would freeze or instantly reboot. The easiest way to trigger it was to kexec a kernel compiled for CONFIG_M586 on an athlon cpu. Compiling for CONFIG_MK7 instead would work fine. The patch fixes a few problems with the kexec inline asm. Signed-off-by: Chris Mason <mason@suse.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | | | [PATCH] powerpc: restore eeh_add_device_late() prototype stubMark Fasheh2006-03-081-0/+2
|/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We fixed this: arch/powerpc/platforms/pseries/eeh.c: In function `eeh_add_device_tree_late': arch/powerpc/platforms/pseries/eeh.c:901: warning: implicit declaration of function `eeh_add_device_late' arch/powerpc/platforms/pseries/eeh.c: At top level: arch/powerpc/platforms/pseries/eeh.c:918: error: conflicting types for 'eeh_add_device_late' arch/powerpc/platforms/pseries/eeh.c:901: error: previous implicit declaration of 'eeh_add_device_late' was here make[2]: *** [arch/powerpc/platforms/pseries/eeh.o] Error 1 But we forgot the !CONFIG_EEH stub. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | / [PATCH] fix build breakage in eeh.c in 2.6.16-rc5-git5Greg KH2006-03-011-0/+1
| |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch should fixe a problem with eeh_add_device_late() not being defined in the ppc64 build process, causing the build to break. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] powerpc: fix dynamic PCI probe regressionJohn Rose2006-02-281-3/+4
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some hotplug driver functions were migrated to the kernel for use by EEH in commit 2bf6a8fa21570f37fd1789610da30f70a05ac5e3. Previously, the PCI Hotplug module had been changed to use the new OFDT-based PCI probe when appropriate: 5fa80fcdca9d20d30c9ecec30d4dbff4ed93a5c6 When rpaphp_pci_config_slot() was moved from the rpaphp driver to the new kernel function pcibios_add_pci_devices(), the OFDT-based probe stuff was dropped. This patch restores it. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Fix runlatch performance issuesAnton Blanchard2006-02-242-32/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The runlatch SPR can take a lot of time to write. My original runlatch code would set it on every exception entry even though most of the time this was not required. It would also continually set it in the idle loop, which is an issue on an SMT capable processor. Now we cache the runlatch value in a threadinfo bit, and only check for it in decrementer and hardware interrupt exceptions as well as the idle loop. Boot on POWER3, POWER5 and iseries, and compile tested on pmac32. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Enable coherency for all pages on 83xx to fix PCI data ↵Kumar Gala2006-02-241-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | corruption On the 83xx platform to ensure the PCI inbound memory is handled properly we have to turn on coherency for all pages in the MMU. Otherwise we see corruption if inbound "prefetching/streaming" is enabled on the PCI controller. Signed-off-by: Randy Vinson <rvinson@mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Only calculate htab_size in one place for kexecMichael Ellerman2006-02-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For kexec we need to know the size of the MMU hash table. Currently we calculate the size once in the htab code, and then twice more in the kexec code, once using htab_hash_mask and once using ppc64_pft_size. On some machines the ppc64_pft_size calculation is broken because ppc64_pft_size is not set. So we need to fix the second calculation, but better still we should just calculate the size once and use it everywhere else. Tested on Power5 LPAR, Power4 non-LPAR and Power3. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Fix accidentally-working typo in __pud_free_tlbDavid Gibson2006-02-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the parameters to the __pud_free_tlb() macro for powerpc is incorrect (see patch) . We get away with it by accident, because the one place the macro is called, the second parameter is a variable named "pud". Signed-off-by: David Gibson <dwg@au1.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] add asm-generic/mman.hMichael S. Tsirkin2006-02-161-30/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all arches. The idea is to make it possible to use them portably even before distros include them in libc headers. Move common flags to asm-generic/mman.h Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] madvise MADV_DONTFORK/MADV_DOFORKMichael S. Tsirkin2006-02-151-0/+2
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, copy-on-write may change the physical address of a page even if the user requested that the page is pinned in memory (either by mlock or by get_user_pages). This happens if the process forks meanwhile, and the parent writes to that page. As a result, the page is orphaned: in case of get_user_pages, the application will never see any data hardware DMA's into this page after the COW. In case of mlock'd memory, the parent is not getting the realtime/security benefits of mlock. In particular, this affects the Infiniband modules which do DMA from and into user pages all the time. This patch adds madvise options to control whether memory range is inherited across fork. Useful e.g. for when hardware is doing DMA from/into these pages. Could also be useful to an application wanting to speed up its forks by cutting large areas out of consideration. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Acked-by: Hugh Dickins <hugh@veritas.com> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] powerpc: unshare system call registrationJANAK DESAI2006-02-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Registers system call for the powerpc architecture. Signed-off-by: Janak Desai <janak@us.ibm.com> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge branch 'for-linus2' of ↵Linus Torvalds2006-02-082-1/+6
|\ \ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/bird
| * | [PATCH] __user annotations in powerpc thread_infoAl Viro2006-02-081-1/+1
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | [PATCH] powerpc signal __user annotationsAl Viro2006-02-081-0/+5
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | [PATCH] powerpc: Thermal control for dual core G5sBenjamin Herrenschmidt2006-02-081-0/+5
|/ / | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a windfarm module, windfarm_pm112, for the dual core G5s (both 2 and 4 core models), keeping the machine from getting into vacuum-cleaner mode ;) For proper credits, the patch was initially written by Paul Mackerras, and slightly reworked by me to add overtemp handling among others. The patch also removes the sysfs attributes from windfarm_pm81 and windfarm_pm91 and instead adds code to the windfarm core to automagically expose attributes for sensor & controls. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2006-02-081-0/+2
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| * [PATCH] powerpc: Don't overwrite flat device tree with kdump kernelMichael Ellerman2006-02-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It's possible for prom_init to allocate the flat device tree inside the kdump crash kernel region. If this happens, when we load the kdump kernel we overwrite the flattened device tree, which is bad. We could make prom_init try and avoid allocating inside the crash kernel region, but then we run into issues if the crash kernel region uses all the space inside the RMO. The easiest solution is to move the flat device tree once we're running in the kernel. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] remove bogus asm/bug.h includes.Al Viro2006-02-081-1/+0Star
|/ | | | | | | A bunch of asm/bug.h includes are both not needed (since it will get pulled anyway) and bogus (since they are done too early). Removed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] powerpc: fix for kexec ppc32Albert Herranz2006-02-011-1/+3
| | | | | | | | | | | | | | | - kexec.h is included from assembly code, thus C code must be properly protected. - (embedded) ppc32 systems use machine_kexec_simple whose declaration vanished during a recent powerpc merge change. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Cc: <fastboot@osdl.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] powerpc: enable irq's for platform functions.Ben Collins2006-02-011-3/+2Star
| | | | | | | | | | | | | Make the platform function interrupt functions actually work. Calls irq_enable() for the first in the list, and irq_disable() for the last. Added *func to struct irq_client so the the user can pass just that to pmf_unregister_irq_client(). Signed-off-by: Ben Collins <bcollins@ubuntu.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] TIF_RESTORE_SIGMASK support for arch/powerpcDavid Woodhouse2006-01-192-2/+7
| | | | | | | | | | | Implement the TIF_RESTORE_SIGMASK flag in the new arch/powerpc kernel, for both 32-bit and 64-bit system call paths. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Generic sys_rt_sigsuspend()David Woodhouse2006-01-191-0/+2
| | | | | | | | | | | | The TIF_RESTORE_SIGMASK flag allows us to have a generic implementation of sys_rt_sigsuspend() instead of duplicating it for each architecture. This provides such an implementation and makes arch/powerpc use it. It also tidies up the ppc32 sys_sigsuspend() to use TIF_RESTORE_SIGMASK. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix sparse parse error in lppaca.hBryan O'Sullivan2006-01-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | sparse can't parse a struct definition in include/asm-powerpc/lppaca.h, even though gcc can accept it. The form looks like this: struct __attribute__((whatever)) foo { }; An equivalent that both gcc and sparse can handle is struct foo { } __attribute__((whatever)); This is the only definition of this type in the tree, and fixing it is easier than fixing sparse. Signed-off-by: Bryan O'Sullivan <bos@serpentine.com> [ Side note: fixing sparse wouldn't be hard, but the "attribute at the end" version is the canonical one, and the one that makes sense. So let's just fix the kernel instead. Luc Van Oostenryck already sent out a sparse patch to the sparse mailing list in case anybody cares. -- Linus ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] powerpc: Fix kdump copy regs and dynamic allocate per-cpu crash notesHaren Myneni2006-01-151-12/+73
| | | | | | | | | | | | | | | | - This contains the arch specific changes for the following the kdump generic fixes which were already accepted in the upstream. . Capturing CPU registers (for the case of 'panic' and invoking the dump using 'sysrq-trigger') from a function (stack frame) which will be not be available during the kdump boot. Hence, might result in invalid stack trace. . Dynamically allocating per cpu ELF notes section instead of statically for NR_CPUS. - Fix the compiler warning in prom_init.c. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: oprofile cpu type names clash with other codeAndy Whitcroft2006-01-141-5/+5
| | | | | | | | | | | | | | | | | | | | | | In 2.6.15-git6 a change was commited in the oprofile support in the powerpc architecture. It introduced the powerpc_oprofile_type which contains the define G4. This causes a name clash with the existing wacom usb tablet driver. CC [M] drivers/usb/input/wacom.o drivers/usb/input/wacom.c:98: error: conflicting types for `G4' include/asm/cputable.h:37: error: previous declaration of `G4' CC [M] drivers/usb/mon/mon_text.o make[3]: *** [drivers/usb/input/wacom.o] Error 1 make[2]: *** [drivers/usb/input] Error 2 The elements of an enum declared in global scope are effectivly global identifiers themselves. As such we need to ensure the names are unique. This patch updates the later oprofile support to use unique names. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Provide a suitable AT_PLATFORM valuePaul Mackerras2006-01-142-9/+11
| | | | | | | | | | | | | | | | | | | | The glibc folks want to use AT_PLATFORM to select between possible alternative versions of shared libraries. This commit makes the kernel supply an AT_PLATFORM string that indicates what class of processor we are running on. Processors with the same set of user-level instructions and roughly the same instruction scheduling characteristics are given the same AT_PLATFORM value; for example, 821, 823 and 860 are all reported as "ppc823", and 7447, 7447A, 7448, 7450, 7451, 7455 are all called "ppc7450". The intention is that the AT_PLATFORM values match the values that gcc accepts for the -mcpu= option. For values which are numeric (e.g. -mcpu=750), "ppc" has been prepended. This also adds a PPC_FEATURE_BOOKE bit to the AT_HWCAP value and sets it for the 440 family and the Freescale 85xx family. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: reformat atomic_add_unlessAnton Blanchard2006-01-131-13/+13
| | | | | | | It makes my eyes hurt. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: use lwsync in atomics, bitops, lock functionsAnton Blanchard2006-01-136-46/+32Star
| | | | | | | | | | | | | | | | | | | | | eieio is only a store - store ordering. When used to order an unlock operation loads may leak out of the critical region. This is potentially buggy, one example is if a user wants to atomically read a couple of values. We can solve this with an lwsync which orders everything except store - load. I removed the (now unused) EIEIO_ON_SMP macros and the c versions isync_on_smp and eieio_on_smp now we dont use them. I also removed some old comments that were used to identify inline spinlocks in assembly, they dont make sense now our locks are out of line. Another interesting thing was that read_unlock was using an eieio even though the rest of the spinlock code had already been converted to use lwsync. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Remove lppaca structure from the PACADavid Gibson2006-01-134-18/+9Star
| | | | | | | | | | | | | | | | | | At present the lppaca - the structure shared with the iSeries hypervisor and phyp - is contained within the PACA, our own low-level per-cpu structure. This doesn't have to be so, the patch below removes it, making a separate array of lppaca structures. This saves approximately 500*NR_CPUS bytes of image size and kernel memory, because we don't need aligning gap between the Linux and hypervisor portions of every PACA. On the other hand it means an extra level of dereference in many accesses to the lppaca. The patch also gets rid of several places where we assign the paca address to a local variable for no particular reason. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Cleanup LOADADDR etc. asm macrosDavid Gibson2006-01-131-36/+40
| | | | | | | | | | | | | | | | | | This patch consolidates the variety of macros used for loading 32 or 64-bit constants in assembler (LOADADDR, LOADBASE, SET_REG_TO_*). The idea is to make the set of macros consistent across 32 and 64 bit and to make it more obvious which is the appropriate one to use in a given situation. The new macros and their semantics are described in the comments in ppc_asm.h. In the process, we change several places that were unnecessarily using immediate loads on ppc64 to use the GOT/TOC. Likewise we cleanup a couple of places where we were clumsily subtracting PAGE_OFFSET with asm instructions to use assemble-time arithmetic or the toreal() macro instead. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Add of_find_property functionDave C Boutcher2006-01-131-0/+3
| | | | | | | | | Add an of_find_property function that returns a struct property given a property name. Then change the get_property function to use that routine internally. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Add/remove/update properties in firmware device treeDave C Boutcher2006-01-131-0/+5
| | | | | | | | | | | | | | | | | | Add support for updating and removing device tree properties. Since we hand out pointers to properties with gay abandon, we can't just free the property storage. Instead we move deleted, or the old copy of an updated property, to a "dead properties" list. Also note, its not feasable to kref device tree properties. we call get_property() all over the kernel in a wild variety of contexts. One consequence of this change is that we now take a read_lock(&devtree_lock) when doing get_property(). Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Add some more pSeries hypervisor call constantsDave C Boutcher2006-01-131-0/+5
| | | | | | | Adds a few more hypervisor call constants. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2006-01-1217-155/+101Star
|\ | | | | | | | | | | | | Fix up delete/modify conflict of arch/ppc/kernel/process.c by hand (it's gone, gone, gone). Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] powerpc: small pci cleanupsStephen Rothwell2006-01-121-2/+0Star
| | | | | | | | | | | | | | | | pcibios_claim_one_bus is not needed on iSeries and phbs_remap_io can be mode static. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: clean up iommu.h a bitStephen Rothwell2006-01-121-19/+0Star
| | | | | | | | | | | | | | | | | | | | There was a function declared for CONFIG_PSERIES which no longer exists and the two function declarations for CONFIG_ISERIES have been moved into an include file in platforms/iseries since they are defined and used only there. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: iSeries fixes for build with no PCIStephen Rothwell2006-01-121-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | This reverts part of "ppc64 iSeries: allow build with no PCI" (145d01e4287b8cbf50f87c3283e33bf5c84e8468) which affected generic code and applies a fix in the arch specific code. Commit "partly merge iseries do_IRQ" (5fee9b3b39eb55c7e3619a3b36ceeabffeb8f144) introduced iSeries_get_irq which was only available if CONFIG_PCI is set. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-09 18:38:15 +0200