aboutsummaryrefslogtreecommitdiffstats
path: root/arch
Commit message (Collapse)AuthorAge
* Merge branch 'for-um' of ↵Richard Weinberger2012-05-21
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal into for-3.5
| * um: missing checks of __put_user()/__get_user() return valuesAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um: stub_rt_sigsuspend isn't needed these days anymoreAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um/x86: merge (and trim) 32- and 64-bit variants of ptrace.hAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um: bury unused _TIF_RESTORE_SIGMASKAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um: wrong sigmask saved in case of multiple sigframesAl Viro2012-05-21
| | | | | | | | | | | | | | | | we can't just find oldmask once; if there are multiple signals and we loop building sigframes for those, ->saved_mask will be definitely wrong for all but the first one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um: add TIF_NOTIFY_RESUMEAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * um: ->restart_block.fn needs to be reset on sigreturnAl Viro2012-05-21
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | um: Remove CONFIG_IRQ_RELEASE_METHODRichard Weinberger2012-05-21
| | | | | | | | | | | | | | UML does no longer need CONFIG_IRQ_RELEASE_METHOD. Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
* | um: Remove usage of irq_chip->release()Richard Weinberger2012-05-21
| | | | | | | | | | | | | | UML does no longer need irq_chip->release(). Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
* | um: Implement um_free_irq()Richard Weinberger2012-05-21
| | | | | | | | | | | | | | | | | | | | Instead of using chip->release() we can achieve the same using a simple wrapper for free_irq(). We have already um_request_irq(), so um_free_irq() is the perfect counterpart. Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
* | um: Fix __swp_type()Richard Weinberger2012-05-21
| | | | | | | | | | | | | | | | | | | | The current __swp_type() function uses a too small bitshift. Using more than one swap files causes bad pages because the type bits clash with other page flags. CC: stable@kernel.org Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* | um: Implement a custom pte_same() functionRichard Weinberger2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet installed on the host side using mmap(). pte_same() has to ignore this flag, otherwise unuse_pte_range() is unable to unuse the page because two identical page tables entries with different _PAGE_NEWPAGE flags would not match and swapoff() would never return. CC: stable@kernel.org Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* | um: Add BUG() to do_ops()'s error pathRichard Weinberger2012-05-21
| | | | | | | | | | | | | | In case we encounter a bad operation in do_ops() something is really broken and it's better to BUG(). Signed-off-by: Richard Weinberger <richard@nod.at>
* | um: Remove unused variablesRichard Weinberger2012-05-21
| | | | | | | | Signed-off-by: Richard Weinberger <richard@nod.at>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-nextLinus Torvalds2012-05-21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc updates from David Miller: 1) Kill off support for sun4c and Cypress sun4m chips. And as a result we were able to also kill off that ugly btfixup thing that required multi-stage links of the final vmlinux image in the Kbuild system. This should make the kbuild maintainers really happy. Thanks a lot to Sam Ravnborg for his tireless efforts to get this going. 2) Convert sparc64 to nobootmem. I suspect now with sparc32 being a lot cleaner, it should be able to fall in line and modernize in this area too. 3) Make sparc32 use generic clockevents, from Tkhai Kirill. [ I fixed up the BPF rules, and tried to clean up the build rules too. But I don't have - or want - a sparc cross-build environment, so the BPF rule bug and the related build cleanup was all done with just a bare "make -n" pseudo-test. - Linus ] * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (110 commits) sparc32: use flushi when run-time patching in per_cpu_patch sparc32: fix cpuid_patch run-time patching sparc32: drop unused inline functions in srmmu.c sparc32: drop unused functions in pgtsrmmu.h sparc32,leon: move leon mmu functions to leon_mm.c sparc32,leon: remove duplicate definitions in leon.h sparc32,leon: remove duplicate UART register definitions sparc32,leon: move leon ASI definitions to asi.h sparc32: move trap table to a separate file sparc64: renamed ttable.S to ttable_64.S sparc32: Remove asm/sysen.h header. sparc32: Delete asm/smpprim.h sparc32: Remove unused empty_bad_page{,_table} declarations. sparc32: Kill boot_cpu_id4 sparc32: Move GET_PROCESSOR*_ID() out of asm/asmmacro.h sparc32: Remove completely unused code from asm/cache.h sparc32: Add ucmpdi2.o to obj-y instead of lib-y. sparc32: add ucmpdi2 sparc: introduce arch/sparc/Kbuild sparc: remove obsolete documentation ...
| * | sparc32: use flushi when run-time patching in per_cpu_patchSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Davis S. Miller wrote: " The way we do that now is overkill. We only needed to use the MMU cache ops when we had sun4c around because sun4c lacked support for the "flush" instruction. But all sun4m and later chips have it so we can use it unconditionally. So in the per_cpu_patch() code, get rid of the cache ops invocation, and instead execute a "flush %reg" after each of the instruction patch assignments, where %reg is set to the address of the instruction that was stored into. Perhaps take the flushi() definition from asm/cacheflush_64.h and place it into asm/cacheflush.h, then you can simply use that. " Implemented as per suggestion. Moved run-time patching before we call paging_init(), so helper methods in paging_init() may utilise run-time patching too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: fix cpuid_patch run-time patchingSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | We hang forever when trying to do run-time patching of instructions identified by the cpuid_patch section Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: drop unused inline functions in srmmu.cSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | When decelared inline the compiler does not warn about unused functions. But they are not used so drop them. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: drop unused functions in pgtsrmmu.hSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | One function was only used by leon - move it to a leon specific file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32,leon: move leon mmu functions to leon_mm.cSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | We already have a leaon specific file - so keep all the laon stuff in one place. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Konrad Eisele <konrad@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32,leon: remove duplicate definitions in leon.hSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Konrad Eisele <konrad@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32,leon: remove duplicate UART register definitionsSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | The registers are defined in leon_amba too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Konrad Eisele <konrad@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32,leon: move leon ASI definitions to asi.hSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Konrad Eisele <konrad@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: move trap table to a separate fileSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc64: renamed ttable.S to ttable_64.SSam Ravnborg2012-05-20
| | | | | | | | | | | | | | | | | | | | | To allow us to add ttable_32.S Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Remove asm/sysen.h header.David S. Miller2012-05-20
| | | | | | | | | | | | | | | | | | Defines a sun4c register, thus completely unused. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Delete asm/smpprim.hDavid S. Miller2012-05-20
| | | | | | | | | | | | | | | | | | Completely unused. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Remove unused empty_bad_page{,_table} declarations.David S. Miller2012-05-20
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Kill boot_cpu_id4David S. Miller2012-05-20
| | | | | | | | | | | | | | | | | | It is written, but never actually read. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Move GET_PROCESSOR*_ID() out of asm/asmmacro.hDavid S. Miller2012-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GET_PROCESSOR4D_ID is completely unused, so delete it. Move GET_PROCESSOR4M_ID to the sun4m specific trap code which uses it. We now no longer need to include asm/asi.h Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Remove completely unused code from asm/cache.hDavid S. Miller2012-05-20
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Add ucmpdi2.o to obj-y instead of lib-y.David S. Miller2012-05-19
| | | | | | | | | | | | | | | | | | | | | Otherwise if no references exist in the static kernel image, we won't export the symbol properly to modules. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: add ucmpdi2Sam Ravnborg2012-05-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on copy from microblaze add ucmpdi2 implementation. This fixes build of niu driver which failed with: drivers/built-in.o: In function `niu_get_nfc': niu.c:(.text+0x91494): undefined reference to `__ucmpdi2' This driver will never be used on a sparc32 system, but patch added to fix build breakage with all*config builds. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc: introduce arch/sparc/KbuildSam Ravnborg2012-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows us to do: make arch/sparc/ to build the core part of the sparc kernel. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc: clean up MakefileSam Ravnborg2012-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - delete unused variables - align assignments - drop stale comments - kill use of "\" for line continuation Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: delete muldiv.o from MakefileSam Ravnborg2012-05-15
| | | | | | | | | | | | | | | | | | | | | The source file is no more.. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Kill off software 32-bit multiply/divide routines.David S. Miller2012-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the explicit calls to .udiv/.umul in assembler, I made a mechanical (read as: safe) transformation. I didn't attempt to make any simplifications. In particular, __ndelay and __udelay can be simplified significantly. Some of the %y reads are unnecessary and these routines have no need any longer for allocating a register window, they can be leaf functions. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Build kernel with -mcpu=v8David S. Miller2012-05-15
| | | | | | | | | | | | | | | | | | | | | With Cypress gone we can generate real hardware integer multiply and divide instructions at will. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: cleanup mm/fault_32.cSam Ravnborg2012-05-15
| | | | | | | | | | | | | | | | | | | | | | | | - remove unused variables - fix coding style issues that hurts my eyes Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Remove cypress cpu support.David S. Miller2012-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | It's the one aberration in v8, the only cpu that didn't actually have hardware multiply and divide instructions. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Sam Ravnborg <sam@ravnborg.org>
| * | sparc64: Remove pointless assignment in floppy support.David S. Miller2012-05-14
| | | | | | | | | | | | | | | Reported-by: Josip Rodin <joy@entuzijast.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Kill unused hard_smp{4m,4d,leon}_processor_id() inlined.David S. Miller2012-05-14
| | | | | | | | | | | | | | | Reported-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: drop build time btfixup patchingSam Ravnborg2012-05-14
| | | | | | | | | | | | | | | Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: remove runtime btfix supportSam Ravnborg2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | - remove all uses of btfixup header - remove the btfixup header - remove the btfixup code Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: remove remaining users of btfixupSam Ravnborg2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | Use sparc_config to hold the last two function pointers. There was no point generating dedicated _ops structures only for these. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: move smp ipi to method opsSam Ravnborg2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I ended up renaming set_cpu_int to send_ipi to be consistent all way around. send_ipi was moved to the *_smp.c files so we could call the relevant method direct, without any _ops indirection. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Implement hard_smp_processor_id() via instruction patching.David S. Miller2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the last non-trivial user of btfixup. Like sparc64, use a special patch section to resolve the various implementations of how to read the current CPU's ID when we don't have current_thread_info()->cpu necessarily available. Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Sam Ravnborg <sam@ravnborg.org>
| * | sparc32: Move cache and TLB flushes over to method ops.David S. Miller2012-05-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This eliminated most of the remaining users of btfixup. There are some complications because of the special cases we have for sun4d, leon, and some flavors of viking. It was found that there are no cases where a flush_page_for_dma method was not hooked up to something, so the "noflush" iommu methods were removed. Add some documentation to the viking_sun4d_smp_ops to describe exactly the hardware bug which causes us to need special TLB flushing on sun4d. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sparc32: Remove unused declarations in srmmu.cDavid S. Miller2012-05-13
| | | | | | | | | | | | | | | | | | Uses of these went away with the sun4c removal. Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 07:17:29 -0500