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* Merge branch 'akpm' (patches from Andrew)Linus Torvalds2019-01-051-5/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge more updates from Andrew Morton: - procfs updates - various misc bits - lib/ updates - epoll updates - autofs - fatfs - a few more MM bits * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (58 commits) mm/page_io.c: fix polled swap page in checkpatch: add Co-developed-by to signature tags docs: fix Co-Developed-by docs drivers/base/platform.c: kmemleak ignore a known leak fs: don't open code lru_to_page() fs/: remove caller signal_pending branch predictions mm/: remove caller signal_pending branch predictions arch/arc/mm/fault.c: remove caller signal_pending_branch predictions kernel/sched/: remove caller signal_pending branch predictions kernel/locking/mutex.c: remove caller signal_pending branch predictions mm: select HAVE_MOVE_PMD on x86 for faster mremap mm: speed up mremap by 20x on large regions mm: treewide: remove unused address argument from pte_alloc functions initramfs: cleanup incomplete rootfs scripts/gdb: fix lx-version string output kernel/kcov.c: mark write_comp_data() as notrace kernel/sysctl: add panic_print into sysctl panic: add options to print system info when panic happens bfs: extra sanity checking and static inode bitmap exec: separate MM_ANONPAGES and RLIMIT_STACK accounting ...
| * mm: treewide: remove unused address argument from pte_alloc functionsJoel Fernandes (Google)2019-01-041-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "Add support for fast mremap". This series speeds up the mremap(2) syscall by copying page tables at the PMD level even for non-THP systems. There is concern that the extra 'address' argument that mremap passes to pte_alloc may do something subtle architecture related in the future that may make the scheme not work. Also we find that there is no point in passing the 'address' to pte_alloc since its unused. This patch therefore removes this argument tree-wide resulting in a nice negative diff as well. Also ensuring along the way that the enabled architectures do not do anything funky with the 'address' argument that goes unnoticed by the optimization. Build and boot tested on x86-64. Build tested on arm64. The config enablement patch for arm64 will be posted in the future after more testing. The changes were obtained by applying the following Coccinelle script. (thanks Julia for answering all Coccinelle questions!). Following fix ups were done manually: * Removal of address argument from pte_fragment_alloc * Removal of pte_alloc_one_fast definitions from m68k and microblaze. // Options: --include-headers --no-includes // Note: I split the 'identifier fn' line, so if you are manually // running it, please unsplit it so it runs for you. virtual patch @pte_alloc_func_def depends on patch exists@ identifier E2; identifier fn =~ "^(__pte_alloc|pte_alloc_one|pte_alloc|__pte_alloc_kernel|pte_alloc_one_kernel)$"; type T2; @@ fn(... - , T2 E2 ) { ... } @pte_alloc_func_proto_noarg depends on patch exists@ type T1, T2, T3, T4; identifier fn =~ "^(__pte_alloc|pte_alloc_one|pte_alloc|__pte_alloc_kernel|pte_alloc_one_kernel)$"; @@ ( - T3 fn(T1, T2); + T3 fn(T1); | - T3 fn(T1, T2, T4); + T3 fn(T1, T2); ) @pte_alloc_func_proto depends on patch exists@ identifier E1, E2, E4; type T1, T2, T3, T4; identifier fn =~ "^(__pte_alloc|pte_alloc_one|pte_alloc|__pte_alloc_kernel|pte_alloc_one_kernel)$"; @@ ( - T3 fn(T1 E1, T2 E2); + T3 fn(T1 E1); | - T3 fn(T1 E1, T2 E2, T4 E4); + T3 fn(T1 E1, T2 E2); ) @pte_alloc_func_call depends on patch exists@ expression E2; identifier fn =~ "^(__pte_alloc|pte_alloc_one|pte_alloc|__pte_alloc_kernel|pte_alloc_one_kernel)$"; @@ fn(... -, E2 ) @pte_alloc_macro depends on patch exists@ identifier fn =~ "^(__pte_alloc|pte_alloc_one|pte_alloc|__pte_alloc_kernel|pte_alloc_one_kernel)$"; identifier a, b, c; expression e; position p; @@ ( - #define fn(a, b, c) e + #define fn(a, b) e | - #define fn(a, b) e + #define fn(a) e ) Link: http://lkml.kernel.org/r/20181108181201.88826-2-joelaf@google.com Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> Suggested-by: Kirill A. Shutemov <kirill@shutemov.name> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Cc: Michal Hocko <mhocko@kernel.org> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Remove 'type' argument from access_ok() functionLinus Torvalds2019-01-033-7/+7
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument of the user address range verification function since we got rid of the old racy i386-only code to walk page tables by hand. It existed because the original 80386 would not honor the write protect bit when in kernel mode, so you had to do COW by hand before doing any user access. But we haven't supported that in a long time, and these days the 'type' argument is a purely historical artifact. A discussion about extending 'user_access_begin()' to do the range checking resulted this patch, because there is no way we're going to move the old VERIFY_xyz interface to that model. And it's best done at the end of the merge window when I've done most of my merges, so let's just get this done once and for all. This patch was mostly done with a sed-script, with manual fix-ups for the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form. There were a couple of notable cases: - csky still had the old "verify_area()" name as an alias. - the iter_iov code had magical hardcoded knowledge of the actual values of VERIFY_{READ,WRITE} (not that they mattered, since nothing really used it) - microblaze used the type argument for a debug printout but other than those oddities this should be a total no-op patch. I tried to fix up all architectures, did fairly extensive grepping for access_ok() uses, and the changes are trivial, but I may have missed something. Any missed conversion should be trivially fixable, though. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xtensa: implement jump_label supportMax Filippov2018-12-201-0/+65
| | | | | | | | | | Use 3-byte 'nop' and 'j' instructions that are always present. Don't let assembler mark a spot right after patchable 'j' instruction as unreachable and later put literals or padding bytes there. Add separate implementations of patch_text for SMP and UP cases, avoiding use of atomics on UP. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: implement syscall tracepointsMax Filippov2018-12-174-1/+14
| | | | | | | | | | | | | | | Add TIF_SYSCALL_TRACEPOINT flag definition; add _TIF_SYSCALL_TRACEPOINT to _TIF_WORK_MASK. Call trace_sys_enter from do_syscall_trace_enter and trace_sys_exit from do_syscall_trace_leave when TIF_SYSCALL_TRACEPOINT flag is set. Add declaration of sys_call_table to arch/xtensa/include/asm/syscall.h Add definition of NR_syscalls to arch/xtensa/include/asm/unistd.h Select HAVE_SYSCALL_TRACEPOINTS. This change allows tracing each syscall entry and exit through the ftrace mechanism. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: implement tracehook functions and enable HAVE_ARCH_TRACEHOOKMax Filippov2018-12-171-1/+79
| | | | | | | | Implement syscall_get_nr, syscall_rollback, syscall_get_error, syscall_{get,set}_return_value and syscall_{get,set}_arguments. Select HAVE_ARCH_TRACEHOOK as Xtensa now has all support for that. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: enable CORE_DUMP_USE_REGSETMax Filippov2018-12-171-5/+1
| | | | | | | | Drop xtensa_elf_core_copy_regs function, ELF_CORE_COPY_REGS macro, and dump_fpu function. Define CORE_DUMP_USE_REGSET to make ELF core dumper use regset interface. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: implement task_user_regset_viewMax Filippov2018-12-171-13/+1
| | | | | | | | | | - define struct user_pt_regs in the arch/xtensa/include/uapi/asm/ptrace.h with the same layout as xtensa_gregset_t; make xtensa_gregset_t a typedef; - define REGSET_GPR regset, implement register get and set functions; - define task_user_regset_view function and expose REGSET_GPR. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: call do_syscall_trace_{enter,leave} selectivelyMax Filippov2018-12-171-4/+1
| | | | | | | | Check whether calls to do_syscall_trace_{enter,leave} are necessary in the system_call function. Define _TIF_WORK_MASK to a bitmask of flags that reuire the calls. Fix comment. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: use NO_SYSCALL instead of -1Max Filippov2018-12-171-0/+2
| | | | | | | For the sake of clarity define macro NO_SYSCALL and use it for setting/checking struct pt_regs::syscall field. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: define syscall_get_arch()Dmitry V. Levin2018-12-171-0/+7
| | | | | | | | | | syscall_get_arch() is required to be implemented on all architectures in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* Move EM_XTENSA to uapi/linux/elf-em.hDmitry V. Levin2018-12-171-1/+1
| | | | | | | | | | | | | | | | | | This should never have been defined in the arch tree to begin with, and now uapi/linux/audit.h header is going to use EM_XTENSA in order to define AUDIT_ARCH_XTENSA which is needed to implement syscall_get_arch() which in turn is required to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Elvira Khabirova <lineprinter@altlinux.org> Cc: Eugene Syromyatnikov <esyr@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: don't use l32r opcode directlyMax Filippov2018-12-052-10/+8
| | | | | | | | | xtensa assembler is capable of representing register loads with either movi + addmi, l32r or const16, depending on the core configuration. Don't use '.literal' and 'l32r' directly in the code, use 'movi' and let the assembler relax them. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: clean up WSR*/RSR*/get_sr/set_srMax Filippov2018-12-045-39/+19
| | | | | | | | | WSR and RSR are too generic and collide with other macro definitions in the kernel causing warnings in allmodconfig builds. Drop WSR and RSR macros and WSR_* and RSR_* variants. Change get_sr and set_sr to xtensa_get_sr and xtensa_set_sr. Fix up users. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: drop unused declarations from elf.hMax Filippov2018-12-031-11/+0
| | | | | | | | do_copy_regs, do_restore_regs, do_save_fpregs and do_restore_fpregs are not used or implemented by xtensa, drop these declarations from the arch/xtensa/include/asm/elf.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: clean up syscall.hMax Filippov2018-12-031-13/+6
| | | | | | Drop non-existent/unneeded function declarations, add header guard. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: drop unused coprocessor helper functionsMax Filippov2018-12-031-3/+0
| | | | | | | coprocessor_save, coprocessor_load and coprocessor_restore are neither used nor exported for use by modules. Drop them. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: drop unused field from the struct exc_tableMax Filippov2018-12-031-2/+0
| | | | | | | exc_table::syscall_save and corresponding macro EXC_TABLE_SYSCALL_SAVE have never been used by the xtensa code. Drop them. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: generate uapi header and syscall table header filesFiroz Khan2018-12-021-0/+1
| | | | | | | | | | | | | | | | | | System call table generation script must be run to gener- ate unistd_32.h and syscall_table.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32.h and syscall_table.h files by the syscall table generation script invoked by xtensa/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/syscall.c file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* Merge tag 'xtensa-20181115' of git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds2018-11-161-1/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa fixes from Max Filippov: - fix stack alignment for bFLT binaries. - fix physical-to-virtual address translation for boot parameters in MMUv3 256+256 and 512+512 virtual memory layouts. * tag 'xtensa-20181115' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: fix boot parameters address translation xtensa: make sure bFLT stack is 16 byte aligned
| * xtensa: make sure bFLT stack is 16 byte alignedMax Filippov2018-11-051-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xtensa ABI requires stack alignment to be at least 16. In noMMU configuration ARCH_SLAB_MINALIGN is used to align stack. Make it at least 16. This fixes the following runtime error in noMMU configuration, caused by interaction between insufficiently aligned stack and alloca function, that results in corruption of on-stack variable in the libc function glob: Caught unhandled exception in 'sh' (pid = 47, pc = 0x02d05d65) - should not happen EXCCAUSE is 15 Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | treewide: remove current_text_addrNick Desaulniers2018-10-311-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prefer _THIS_IP_ defined in linux/kernel.h. Most definitions of current_text_addr were the same as _THIS_IP_, but a few archs had inline assembly instead. This patch removes the final call site of current_text_addr, making all of the definitions dead code. [akpm@linux-foundation.org: fix arch/csky/include/asm/processor.h] Link: http://lkml.kernel.org/r/20180911182413.180715-1-ndesaulniers@google.com Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | xtensa: use generic vga.hJiri Slaby2018-10-262-19/+1
| | | | | | | | | | | | | | | | | | | | | | | | What xtensa has in asm/vga.h is the same as what can be found in asm-generic/vga.h. So use the latter header. Link: http://lkml.kernel.org/r/20180907132219.12979-1-jslaby@suse.cz Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | asm-generic: Remove unneeded __ARCH_WANT_SYS_LLSEEK macroArnd Bergmann2018-08-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sys_llseek sytem call is needed on all 32-bit architectures and none of the 64-bit ones, so we can remove the __ARCH_WANT_SYS_LLSEEK guard and simplify the include/asm-generic/unistd.h header further. Since 32-bit tasks can run either natively or in compat mode on 64-bit architectures, we have to check for both !CONFIG_64BIT and CONFIG_COMPAT. There are a few 64-bit architectures that also reference sys_llseek in their 64-bit ABI (e.g. sparc), but I verified that those all select CONFIG_COMPAT, so the #if check is still correct here. It's a bit odd to include it in the syscall table though, as it's the same as sys_lseek() on 64-bit, but with strange calling conventions. Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | y2038: Remove newstat family from default syscall setArnd Bergmann2018-08-291-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | We have four generations of stat() syscalls: - the oldstat syscalls that are only used on the older architectures - the newstat family that is used on all 64-bit architectures but lacked support for large files on 32-bit architectures. - the stat64 family that is used mostly on 32-bit architectures to replace newstat - statx() to replace all of the above, adding 64-bit timestamps among other things. We already compile stat64 only on those architectures that need it, but newstat is always built, including on those that don't reference it. This adds a new __ARCH_WANT_NEW_STAT symbol along the lines of __ARCH_WANT_OLD_STAT and __ARCH_WANT_STAT64 to control compilation of newstat. All architectures that need it use an explict define, the others now get a little bit smaller, and future architecture (including 64-bit targets) won't ever see it. Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Merge tag 'xtensa-20180820' of git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds2018-08-2211-103/+104
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa updates from Max Filippov: - switch xtensa arch to the generic noncoherent direct mapping operations - add support for DMA_ATTR_NO_KERNEL_MAPPING attribute - clean up users of platform/hardware.h in generic Xtensa code - fix assembly cache maintenance code for long cache lines - rework noMMU cache attributes initialization - add big-endian HiFi2 test_kc705_be CPU variant * tag 'xtensa-20180820' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: add test_kc705_be variant xtensa: clean up boot-elf/bootstrap.S xtensa: make bootparam parsing optional xtensa: drop variant IRQ support xtensa: drop unneeded platform/hardware.h headers xtensa: move PLATFORM_NR_IRQS to Kconfig xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_START xtensa: drop unused {CONFIG,PLATFORM}_DEFAULT_MEM_SIZE xtensa: rework noMMU cache attributes initialization xtensa: increase ranges in ___invalidate_{i,d}cache_all xtensa: limit offsets in __loop_cache_{all,page} xtensa: platform-specific handling of coherent memory xtensa: support DMA_ATTR_NO_KERNEL_MAPPING attribute xtensa: use generic dma_noncoherent_ops
| * Merge branch 'xtensa-dma-fixes' (early part) into xtensa-fixesMax Filippov2018-08-205-32/+36
| |\ | | | | | | | | | | | | | | | | | | | | | This switches xtensa arch to the generic noncoherent direct mapping operations, adds support for DMA_ATTR_NO_KERNEL_MAPPING attribute and allows for platform-specific handling of coherent memory. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| | * xtensa: platform-specific handling of coherent memoryMax Filippov2018-07-113-6/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | Memory layout is not fixed for noMMU xtensa configurations. Platforms that need to use coherent DMA should implement platform_vaddr_* helpers that check address type (cached/uncached) and convert addresses between these types. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| | * xtensa: use generic dma_noncoherent_opsChristoph Hellwig2018-07-112-26/+1
| | | | | | | | | | | | | | | | | | | | | Switch to the generic noncoherent direct mapping implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: drop variant IRQ supportMax Filippov2018-08-201-17/+1
| | | | | | | | | | | | | | | | | | | | | | | | If an xtensa core provides an additional IRQ controller it should be treated as a separate piece of hardware and be driven by an irqchip driver. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: drop unneeded platform/hardware.h headersMax Filippov2018-08-202-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | platform/hardware.h no longer supply any information for processor.h, vectors.h, setup.c or vmlinux.lds.S, don't include it. This header is now empty in the platforms/iss, so remove it altogether. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: move PLATFORM_NR_IRQS to KconfigMax Filippov2018-08-201-2/+3
| | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_STARTMax Filippov2018-08-201-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop PLATFORM_DEFAULT_MEM_START from the platform/hardware.h headers. Provide definition of CONFIG_DEFAULT_MEM_START always, allow changing it only in noMMU configurations when PLATFORM_WANT_DEFAULT_MEM is selected. Change prompt and description so that it's clear that it controls PAGE_OFFSET and PHYS_OFFSET. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: rework noMMU cache attributes initializationMax Filippov2018-08-131-21/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | Marking default memory region as cached is not always sufficient and is not flexible. Allow specifying cache attributes for the whole memory address space with new config entry MEMMAP_CACHEATTR. Apply it after cache initialization. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: increase ranges in ___invalidate_{i,d}cache_allMax Filippov2018-08-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cache invalidation macros use cache line size to iterate over invalidated cache lines, assuming that all cache ways are invalidated by single instruction, but xtensa ISA recommends to not assume that for future compatibility: In some implementations all ways at index Addry-1..z are invalidated regardless of the specified way, but for future compatibility this behavior should not be assumed. Iterate over all cache ways in ___invalidate_icache_all and ___invalidate_dcache_all. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa: limit offsets in __loop_cache_{all,page}Max Filippov2018-08-131-25/+40
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building kernel for xtensa cores with big cache lines (e.g. 128 bytes or more) __loop_cache_all and __loop_cache_page may generate assembly instructions with immediate fields that are too big. This results in the following build errors: arch/xtensa/mm/misc.S: Assembler messages: arch/xtensa/mm/misc.S:464: Error: operand 2 of 'diwbi' has invalid value '256' arch/xtensa/mm/misc.S:464: Error: operand 2 of 'diwbi' has invalid value '384' arch/xtensa/kernel/head.S: Assembler messages: arch/xtensa/kernel/head.S:172: Error: operand 2 of 'diu' has invalid value '256' arch/xtensa/kernel/head.S:172: Error: operand 2 of 'diu' has invalid value '384' arch/xtensa/kernel/head.S:176: Error: operand 2 of 'iiu' has invalid value '256' arch/xtensa/kernel/head.S:176: Error: operand 2 of 'iiu' has invalid value '384' arch/xtensa/kernel/head.S:255: Error: operand 2 of 'diwb' has invalid value '256' arch/xtensa/kernel/head.S:255: Error: operand 2 of 'diwb' has invalid value '384' Add parameter max_immed to these macros and use it to limit values of immediate operands. Extract common code of these macros into the new macro __loop_cache_unroll. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2018-08-131-2/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf update from Thomas Gleixner: "The perf crowd presents: Kernel updates: - Removal of jprobes - Cleanup and consolidatation the handling of kprobes - Cleanup and consolidation of hardware breakpoints - The usual pile of fixes and updates to PMUs and event descriptors Tooling updates: - Updates and improvements all over the place. Nothing outstanding, just the (good) boring incremental grump work" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (103 commits) perf trace: Do not require --no-syscalls to suppress strace like output perf bpf: Include uapi/linux/bpf.h from the 'perf trace' script's bpf.h perf tools: Allow overriding MAX_NR_CPUS at compile time perf bpf: Show better message when failing to load an object perf list: Unify metric group description format with PMU event description perf vendor events arm64: Update ThunderX2 implementation defined pmu core events perf cs-etm: Generate branch sample for CS_ETM_TRACE_ON packet perf cs-etm: Generate branch sample when receiving a CS_ETM_TRACE_ON packet perf cs-etm: Support dummy address value for CS_ETM_TRACE_ON packet perf cs-etm: Fix start tracing packet handling perf build: Fix installation directory for eBPF perf c2c report: Fix crash for empty browser perf tests: Fix indexing when invoking subtests perf trace: Beautify the AF_INET & AF_INET6 'socket' syscall 'protocol' args perf trace beauty: Add beautifiers for 'socket''s 'protocol' arg perf trace beauty: Do not print NULL strarray entries perf beauty: Add a generator for IPPROTO_ socket's protocol constants tools include uapi: Grab a copy of linux/in.h perf tests: Fix complex event name parsing perf evlist: Fix error out while applying initial delay and LBR ...
| * | perf/hw_breakpoint: Remove default hw_breakpoint_arch_parse()Frederic Weisbecker2018-06-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All architectures have implemented it, we can now remove the poor weak version. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joel Fernandes <joel.opensrc@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/1529981939-8231-11-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | perf/arch/xtensa: Implement hw_breakpoint_arch_parse()Frederic Weisbecker2018-06-261-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Migrate to the new API in order to remove arch_validate_hwbkpt_settings() that clumsily mixes up architecture validation and commit Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joel Fernandes <joel.opensrc@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/1529981939-8231-10-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | perf/hw_breakpoint: Pass arch breakpoint struct to ↵Frederic Weisbecker2018-06-261-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch_check_bp_in_kernelspace() We can't pass the breakpoint directly on arch_check_bp_in_kernelspace() anymore because its architecture internal datas (struct arch_hw_breakpoint) are not yet filled by the time we call the function, and most implementation need this backend to be up to date. So arrange the function to take the probing struct instead. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joel Fernandes <joel.opensrc@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/1529981939-8231-3-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | atomics/treewide: Make unconditional inc/dec ops optionalMark Rutland2018-06-211-32/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many of the inc/dec ops are mandatory, but for most architectures inc/dec are simply trivial wrappers around their corresponding add/sub ops. Let's make all the inc/dec ops optional, so that we can get rid of these boilerplate wrappers. The instrumented atomics are updated accordingly. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20180621121321.4761-17-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | atomics/treewide: Make test ops optionalMark Rutland2018-06-211-42/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the atomics return the result of a test applied after the atomic operation, and almost all architectures implement these as trivial wrappers around the underlying atomic. Specifically: * <atomic>_inc_and_test(v) is (<atomic>_inc_return(v) == 0) * <atomic>_dec_and_test(v) is (<atomic>_dec_return(v) == 0) * <atomic>_sub_and_test(i, v) is (<atomic>_sub_return(i, v) == 0) * <atomic>_add_negative(i, v) is (<atomic>_add_return(i, v) < 0) Rather than have these definitions duplicated in all architectures, with minor inconsistencies in formatting and documentation, let's make these operations optional, with default fallbacks as above. Implementations must now provide a preprocessor symbol. The instrumented atomics are updated accordingly. Both x86 and m68k have custom implementations, which are left as-is, given preprocessor symbols to avoid being overridden. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20180621121321.4761-16-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | atomics/treewide: Make atomic_fetch_add_unless() optionalMark Rutland2018-06-211-24/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several architectures these have a near-identical implementation based on atomic_read() and atomic_cmpxchg() which we can instead define in <linux/atomic.h>, so let's do so, using something close to the existing x86 implementation with try_cmpxchg(). Where an architecture provides its own atomic_fetch_add_unless(), it must define a preprocessor symbol for it. The instrumented atomics are updated accordingly. Note that arch/arc's existing atomic_fetch_add_unless() had redundant barriers, as these are already present in its atomic_cmpxchg() implementation. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineet Gupta <vgupta@synopsys.com> Link: https://lore.kernel.org/lkml/20180621121321.4761-7-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | atomics/treewide: Rename __atomic_add_unless() => atomic_fetch_add_unless()Mark Rutland2018-06-211-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While __atomic_add_unless() was originally intended as a building-block for atomic_add_unless(), it's now used in a number of places around the kernel. It's the only common atomic operation named __atomic*(), rather than atomic_*(), and for consistency it would be better named atomic_fetch_add_unless(). This lack of consistency is slightly confusing, and gets in the way of scripting atomics. Given that, let's clean things up and promote it to an official part of the atomics API, in the form of atomic_fetch_add_unless(). This patch converts definitions and invocations over to the new name, including the instrumented version, using the following script: ---- git grep -w __atomic_add_unless | while read line; do sed -i '{s/\<__atomic_add_unless\>/atomic_fetch_add_unless/}' "${line%%:*}"; done git grep -w __arch_atomic_add_unless | while read line; do sed -i '{s/\<__arch_atomic_add_unless\>/arch_atomic_fetch_add_unless/}' "${line%%:*}"; done ---- Note that we do not have atomic{64,_long}_fetch_add_unless(), which will be introduced by later patches. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20180621121321.4761-2-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* docs: Fix some broken referencesMauro Carvalho Chehab2018-06-151-2/+2
| | | | | | | | | | | | | | | | | | As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Coly Li <colyli@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
* Merge tag 'pci-v4.18-changes' of ↵Linus Torvalds2018-06-071-2/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - unify AER decoding for native and ACPI CPER sources (Alexandru Gagniuc) - add TLP header info to AER tracepoint (Thomas Tai) - add generic pcie_wait_for_link() interface (Oza Pawandeep) - handle AER ERR_FATAL by removing and re-enumerating devices, as Downstream Port Containment does (Oza Pawandeep) - factor out common code between AER and DPC recovery (Oza Pawandeep) - stop triggering DPC for ERR_NONFATAL errors (Oza Pawandeep) - share ERR_FATAL recovery path between AER and DPC (Oza Pawandeep) - disable ASPM L1.2 substate if we don't have LTR (Bjorn Helgaas) - respect platform ownership of LTR (Bjorn Helgaas) - clear interrupt status in top half to avoid interrupt storm (Oza Pawandeep) - neaten pci=earlydump output (Andy Shevchenko) - avoid errors when extended config space inaccessible (Gilles Buloz) - prevent sysfs disable of device while driver attached (Christoph Hellwig) - use core interface to report PCIe link properties in bnx2x, bnxt_en, cxgb4, ixgbe (Bjorn Helgaas) - remove unused pcie_get_minimum_link() (Bjorn Helgaas) - fix use-before-set error in ibmphp (Dan Carpenter) - fix pciehp timeouts caused by Command Completed errata (Bjorn Helgaas) - fix refcounting in pnv_php hotplug (Julia Lawall) - clear pciehp Presence Detect and Data Link Layer Status Changed on resume so we don't miss hotplug events (Mika Westerberg) - only request pciehp control if we support it, so platform can use ACPI hotplug otherwise (Mika Westerberg) - convert SHPC to be builtin only (Mika Westerberg) - request SHPC control via _OSC if we support it (Mika Westerberg) - simplify SHPC handoff from firmware (Mika Westerberg) - fix an SHPC quirk that mistakenly included *all* AMD bridges as well as devices from any vendor with device ID 0x7458 (Bjorn Helgaas) - assign a bus number even to non-native hotplug bridges to leave space for acpiphp additions, to fix a common Thunderbolt xHCI hot-add failure (Mika Westerberg) - keep acpiphp from scanning native hotplug bridges, to fix common Thunderbolt hot-add failures (Mika Westerberg) - improve "partially hidden behind bridge" messages from core (Mika Westerberg) - add macros for PCIe Link Control 2 register (Frederick Lawler) - replace IB/hfi1 custom macros with PCI core versions (Frederick Lawler) - remove dead microblaze and xtensa code (Bjorn Helgaas) - use dev_printk() when possible in xtensa and mips (Bjorn Helgaas) - remove unused pcie_port_acpi_setup() and portdrv_acpi.c (Bjorn Helgaas) - add managed interface to get PCI host bridge resources from OF (Jan Kiszka) - add support for unbinding generic PCI host controller (Jan Kiszka) - fix memory leaks when unbinding generic PCI host controller (Jan Kiszka) - request legacy VGA framebuffer only for VGA devices to avoid false device conflicts (Bjorn Helgaas) - turn on PCI_COMMAND_IO & PCI_COMMAND_MEMORY in pci_enable_device() like everybody else, not in pcibios_fixup_bus() (Bjorn Helgaas) - add generic enable function for simple SR-IOV hardware (Alexander Duyck) - use generic SR-IOV enable for ena, nvme (Alexander Duyck) - add ACS quirk for Intel 7th & 8th Gen mobile (Alex Williamson) - add ACS quirk for Intel 300 series (Mika Westerberg) - enable register clock for Armada 7K/8K (Gregory CLEMENT) - reduce Keystone "link already up" log level (Fabio Estevam) - move private DT functions to drivers/pci/ (Rob Herring) - factor out dwc CONFIG_PCI Kconfig dependencies (Rob Herring) - add DesignWare support to the endpoint test driver (Gustavo Pimentel) - add DesignWare support for endpoint mode (Gustavo Pimentel) - use devm_ioremap_resource() instead of devm_ioremap() in dra7xx and artpec6 (Gustavo Pimentel) - fix Qualcomm bitwise NOT issue (Dan Carpenter) - add Qualcomm runtime PM support (Srinivas Kandagatla) - fix DesignWare enumeration below bridges (Koen Vandeputte) - use usleep() instead of mdelay() in endpoint test (Jia-Ju Bai) - add configfs entries for pci_epf_driver device IDs (Kishon Vijay Abraham I) - clean up pci_endpoint_test driver (Gustavo Pimentel) - update Layerscape maintainer email addresses (Minghuan Lian) - add COMPILE_TEST to improve build test coverage (Rob Herring) - fix Hyper-V bus registration failure caused by domain/serial number confusion (Sridhar Pitchai) - improve Hyper-V refcounting and coding style (Stephen Hemminger) - avoid potential Hyper-V hang waiting for a response that will never come (Dexuan Cui) - implement Mediatek chained IRQ handling (Honghui Zhang) - fix vendor ID & class type for Mediatek MT7622 (Honghui Zhang) - add Mobiveil PCIe host controller driver (Subrahmanya Lingappa) - add Mobiveil MSI support (Subrahmanya Lingappa) - clean up clocks, MSI, IRQ mappings in R-Car probe failure paths (Marek Vasut) - poll more frequently (5us vs 5ms) while waiting for R-Car data link active (Marek Vasut) - use generic OF parsing interface in R-Car (Vladimir Zapolskiy) - add R-Car V3H (R8A77980) "compatible" string (Sergei Shtylyov) - add R-Car gen3 PHY support (Sergei Shtylyov) - improve R-Car PHYRDY polling (Sergei Shtylyov) - clean up R-Car macros (Marek Vasut) - use runtime PM for R-Car controller clock (Dien Pham) - update arm64 defconfig for Rockchip (Shawn Lin) - refactor Rockchip code to facilitate both root port and endpoint mode (Shawn Lin) - add Rockchip endpoint mode driver (Shawn Lin) - support VMD "membar shadow" feature (Jon Derrick) - support VMD bus number offsets (Jon Derrick) - add VMD "no AER source ID" quirk for more device IDs (Jon Derrick) - remove unnecessary host controller CONFIG_PCIEPORTBUS Kconfig selections (Bjorn Helgaas) - clean up quirks.c organization and whitespace (Bjorn Helgaas) * tag 'pci-v4.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (144 commits) PCI/AER: Replace struct pcie_device with pci_dev PCI/AER: Remove unused parameters PCI: qcom: Include gpio/consumer.h PCI: Improve "partially hidden behind bridge" log message PCI: Improve pci_scan_bridge() and pci_scan_bridge_extend() doc PCI: Move resource distribution for single bridge outside loop PCI: Account for all bridges on bus when distributing bus numbers ACPI / hotplug / PCI: Drop unnecessary parentheses ACPI / hotplug / PCI: Mark stale PCI devices disconnected ACPI / hotplug / PCI: Don't scan bridges managed by native hotplug PCI: hotplug: Add hotplug_is_native() PCI: shpchp: Add shpchp_is_native() PCI: shpchp: Fix AMD POGO identification PCI: mobiveil: Add MSI support PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver PCI/AER: Decode Error Source Requester ID PCI/AER: Remove aer_recover_work_func() forward declaration PCI/DPC: Use the generic pcie_do_fatal_recovery() path PCI/AER: Pass service type to pcie_do_fatal_recovery() PCI/DPC: Disable ERR_NONFATAL handling by DPC ...
| * xtensa/PCI: Remove dead codeBjorn Helgaas2018-05-221-2/+0
| | | | | | | | | | | | | | | | | | | | Remove the following unused functions: pcibios_enable_resources() pcibios_alloc_controller() pci_controller_num() Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | Merge branch 'timers-core-for-linus' of ↵Linus Torvalds2018-06-041-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timers and timekeeping updates from Thomas Gleixner: - Core infrastucture work for Y2038 to address the COMPAT interfaces: + Add a new Y2038 safe __kernel_timespec and use it in the core code + Introduce config switches which allow to control the various compat mechanisms + Use the new config switch in the posix timer code to control the 32bit compat syscall implementation. - Prevent bogus selection of CPU local clocksources which causes an endless reselection loop - Remove the extra kthread in the clocksource code which has no value and just adds another level of indirection - The usual bunch of trivial updates, cleanups and fixlets all over the place - More SPDX conversions * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) clocksource/drivers/mxs_timer: Switch to SPDX identifier clocksource/drivers/timer-imx-tpm: Switch to SPDX identifier clocksource/drivers/timer-imx-gpt: Switch to SPDX identifier clocksource/drivers/timer-imx-gpt: Remove outdated file path clocksource/drivers/arc_timer: Add comments about locking while read GFRC clocksource/drivers/mips-gic-timer: Add pr_fmt and reword pr_* messages clocksource/drivers/sprd: Fix Kconfig dependency clocksource: Move inline keyword to the beginning of function declarations timer_list: Remove unused function pointer typedef timers: Adjust a kernel-doc comment tick: Prefer a lower rating device only if it's CPU local device clocksource: Remove kthread time: Change nanosleep to safe __kernel_* types time: Change types to new y2038 safe __kernel_* types time: Fix get_timespec64() for y2038 safe compat interfaces time: Add new y2038 safe __kernel_timespec posix-timers: Make compat syscalls depend on CONFIG_COMPAT_32BIT_TIME time: Introduce CONFIG_COMPAT_32BIT_TIME time: Introduce CONFIG_64BIT_TIME in architectures compat: Enable compat_get/put_timespec64 always ...
| * | time: Add an asm-generic/compat.h fileArnd Bergmann2018-04-191-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have a couple of files that try to include asm/compat.h on architectures where this is available. Those should generally use the higher-level linux/compat.h file, but that in turn fails to include asm/compat.h when CONFIG_COMPAT is disabled, unless we can provide that header on all architectures. This adds the asm/compat.h for all remaining architectures to simplify the dependencies. Architectures that are getting removed in linux-4.17 are not changed here, to avoid needless conflicts with the removal patches. Those architectures are broken by this patch, but we have already shown that they have no users. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | PCI: remove PCI_DMA_BUS_IS_PHYSChristoph Hellwig2018-05-071-2/+0
|/ | | | | | | | | | | This was used by the ide, scsi and networking code in the past to determine if they should bounce payloads. Now that the dma mapping always have to support dma to all physical memory (thanks to swiotlb for non-iommu systems) there is no need to this crude hack any more. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Palmer Dabbelt <palmer@sifive.com> (for riscv) Reviewed-by: Jens Axboe <axboe@kernel.dk>
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