diff options
author | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2003-03-25 14:10:16 +0000 |
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committer | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2003-03-25 14:10:16 +0000 |
commit | 40d269696c5de58c38df86d11f7debfb970c474d (patch) | |
tree | 155601347e039cf9acc7533ed98c49376071c47d /old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c | |
parent | 82a3e7c6c21b9d8eddc706c652cf57f73de5af21 (diff) | |
download | xen-40d269696c5de58c38df86d11f7debfb970c474d.tar.gz xen-40d269696c5de58c38df86d11f7debfb970c474d.tar.bz2 xen-40d269696c5de58c38df86d11f7debfb970c474d.zip |
bitkeeper revision 1.160 (3e806348iI6F7p-OrCqKtE4h8_NgxQ)
.del-xor.h~2cd144e48fc282fb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/xor.h
.del-vga.h~f739bcd0d15a060b:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/vga.h
.del-user.h~2416efc51bfdf653:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/user.h
.del-unistd.h~542a4265bbde875f:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/unistd.h
.del-unaligned.h~3720d8e6f6489c70:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/unaligned.h
.del-ucontext.h~7c514eccb96e5c2c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ucontext.h
.del-uaccess.h~1db7128cf065d28:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/uaccess.h
.del-types.h~6f89af02373cf40e:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/types.h
.del-tlb.h~36a10111face8cf8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/tlb.h
.del-timex.h~14ba40d5403480f8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/timex.h
.del-termios.h~10cb1919354bb3c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/termios.h
.del-termbits.h~9f49d578b6425137:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/termbits.h
.del-system.h~1209f9cb8d09be:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/system.h
.del-swapfile.c~28c1c327b22a067f:
Delete: old/xenolinux-2.4.16-sparse/mm/swapfile.c
.del-string.h~1bd164bf2f37435a:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/string.h
.del-string-486.h~70f2949afd4c7217:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/string-486.h
.del-statfs.h~925b3af593956e2d:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/statfs.h
.del-stat.h~e85bc81529de3a4a:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/stat.h
.del-panic.c~5033fabb3f2e710c:
Delete: old/xenolinux-2.4.16-sparse/kernel/panic.c
.del-mremap.c~5787787c5a3b49d:
Delete: old/xenolinux-2.4.16-sparse/mm/mremap.c
.del-memory.c~ec1a749ca2ed8acd:
Delete: old/xenolinux-2.4.16-sparse/mm/memory.c
.del-major.h~7653e946e9bf8159:
Delete: old/xenolinux-2.4.16-sparse/include/linux/major.h
.del-main.c~de169eb833d5a5cb:
Delete: old/xenolinux-2.4.16-sparse/init/main.c
.del-debug.h~e0aa141e34ec6221:
Delete: old/xenolinux-2.4.16-sparse/include/linux/sunrpc/debug.h
.del-blk.h~87e7b6403472571f:
Delete: old/xenolinux-2.4.16-sparse/include/linux/blk.h
.del-spinlock.h~fc0a4c0ddea83815:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/spinlock.h
.del-softirq.h~c188e7ac18c858a9:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/softirq.h
.del-sockios.h~65e1b7ba563df2c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sockios.h
.del-socket.h~e3ba5757776f00c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/socket.h
.del-smplock.h~72176dfb8142375e:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/smplock.h
.del-smp.h~80313a5f7eb193bb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/smp.h
.del-signal.h~2f1c9e8a4364ed8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/signal.h
.del-siginfo.h~348801659d7e1334:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/siginfo.h
.del-sigcontext.h~1b647a394613b0dc:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sigcontext.h
.del-shmparam.h~c83ce37d9b16061c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/shmparam.h
.del-shmbuf.h~3ff48e518b9ecb0a:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/shmbuf.h
.del-setup.h~2d7d5e0b8c7c48dc:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/setup.h
.del-serial.h~90dee919c827ab29:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/serial.h
.del-sembuf.h~f0fa7347b9fc071:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/sembuf.h
.del-semaphore.h~d9f40f7e118c9d3c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/semaphore.h
.del-segment.h~cc492acab0d69477:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/segment.h
.del-scatterlist.h~4be6ff4f53a3579b:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/scatterlist.h
.del-rwsem.h~c9865b4ec1423b3a:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/rwsem.h
.del-rwlock.h~3e6f58ae32c920e9:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/rwlock.h
.del-resource.h~7e8eaa833cc25dca:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/resource.h
.del-ptrace.h~c55079be77b9ee19:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ptrace.h
.del-processor.h~52612a255dfb7cbb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/processor.h
.del-posix_types.h~b6e7c803f3dbab8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/posix_types.h
.del-poll.h~f9b451e3ea9e50c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/poll.h
.del-pgtable.h~43ac63ace2e93820:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable.h
.del-pgtable-3level.h~abbe18b96121bd83:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable-3level.h
.del-pgtable-2level.h~8fe0307e54d8bf9b:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgtable-2level.h
.del-pgalloc.h~9e75e06aeb89d316:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h
.del-parport.h~cff09d1bc0f89454:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/parport.h
.del-param.h~471736b770596742:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/param.h
.del-page.h~865cbedbe3bc818e:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/page.h
.del-namei.h~38354dac74ae2dd8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/namei.h
.del-mtrr.h~ea4e1ec9703521e8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mtrr.h
.del-msr.h~a6998ff4f5da0e0c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/msr.h
.del-msgbuf.h~5da37442976489a0:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/msgbuf.h
.del-mpspec.h~381f4baa7d484bfb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mpspec.h
.del-module.h~5a2fa3572f0b6bae:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/module.h
.del-mmx.h~ef22db6d3bb87f3a:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmx.h
.del-mmu_context.h~9fbf061b3d508d67:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmu_context.h
.del-mmu.h~ba2b86348e168416:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mmu.h
.del-mman.h~18ee2a138def6b36:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mman.h
.del-mca_dma.h~eddb775e770502cb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mca_dma.h
.del-mc146818rtc.h~c21b56e82a291c22:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/mc146818rtc.h
.del-math_emu.h~4613a62a919e4aa1:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/math_emu.h
.del-locks.h~399a95316c4c9ba7:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/locks.h
.del-linux_logo.h~a388673ba10b8bf8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/linux_logo.h
.del-ldt.h~c03c75bf2fa23f40:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ldt.h
.del-kmap_types.h~eed873e2f55dcd50:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kmap_types.h
.del-keyboard.h~3d6d63ef29bf066c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/keyboard.h
.del-kdbprivate.h~8d8ff2e38b419e4c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kdbprivate.h
.del-kdb.h~1981de7db9b5d353:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/kdb.h
.del-irq.h~4702eca4cd45e793:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/irq.h
.del-ipcbuf.h~f3ed215ace7ac98f:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ipcbuf.h
.del-ipc.h~8e9498e43aadf144:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ipc.h
.del-ioctls.h~263229b882e93cfd:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ioctls.h
.del-ioctl.h~bac00725b5ef0269:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ioctl.h
.del-io_apic.h~d3ebb23a7540d727:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/io_apic.h
.del-io.h~28def6bcf143a288:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/io.h
.del-init.h~f94c9cf325ec8a73:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/init.h
.del-ide.h~1f18b51858f7de58:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/ide.h
.del-i387.h~a09953497f47e974:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/i387.h
.del-hypervisor.h~d2b860c8a01e7b7d:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hypervisor.h
.del-hypervisor-ifs~7df8ec9215cf9987:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hypervisor-ifs
.del-hw_irq.h~85b1e98ab3922232:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hw_irq.h
.del-highmem.h~961c664eb3006cf6:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/highmem.h
.del-hdreg.h~af3fea048084de8c:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hdreg.h
.del-hardirq.h~b78749db9e13d06:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/hardirq.h
.del-floppy.h~fc1f18b688d0a155:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/floppy.h
.del-fixmap.h~63fec5045e83d303:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/fixmap.h
.del-fcntl.h~5e345023494b641:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/fcntl.h
.del-errno.h~2d307a9167d276be:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/errno.h
.del-elf.h~5b4118314cd7dda8:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/elf.h
.del-dma.h~bfdf9bdb575308fb:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/dma.h
.del-div64.h~e6438de5f5adcdad:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/div64.h
.del-desc.h~b339bfef4b0848b3:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/desc.h
.del-delay.h~4f5c1f98fef9f480:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/delay.h
.del-debugreg.h~94ad0b2f7ce81945:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/debugreg.h
.del-current.h~4693f192fd42b4a6:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/current.h
.del-cpufeature.h~9ee68ee4f8b525fd:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/cpufeature.h
.del-checksum.h~db4bcfc8958c5d3f:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/checksum.h
.del-cache.h~64626a79a0712d70:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/cache.h
.del-byteorder.h~404697d4e47c3345:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/byteorder.h
.del-bugs.h~df29bf2b4f74ccaf:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/bugs.h
.del-boot.h~c7462d481f4a9:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/boot.h
.del-bitops.h~ef7ea34f8a17ed86:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/bitops.h
.del-atomic.h~55cde2d93d09526:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/atomic.h
.del-apicdef.h~4ce7611333e9d1fc:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/apicdef.h
.del-usercopy.c~b60ef441a832ff84:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/usercopy.c
.del-tty_io.c~b7ee058bd0b4d969:
Delete: old/xenolinux-2.4.16-sparse/drivers/char/tty_io.c
.del-traps.c~58f6978ca3914806:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/traps.c
.del-time.c~8772141ba7a5b7be:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c
.del-sys_i386.c~f84bd504c2085dda:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/sys_i386.c
.del-strstr.c~e80f16ebdccc4062:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/strstr.c
.del-signal.c~45454d7374cce0a1:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/signal.c
.del-setup.c~6f22e121db6f1bc:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/setup.c
.del-semaphore.c~3e7a2194beb1c8e4:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/semaphore.c
.del-rd.c~99ae381b254bd356:
Delete: old/xenolinux-2.4.16-sparse/drivers/block/rd.c
.del-ptrace.c~8cb5d0b722ab58b9:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ptrace.c
.del-process.c~ab23652fb4106ce3:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/process.c
.del-old-checksum.c~c3dfe224f68ed131:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/old-checksum.c
.del-mmx.c~3f27e7b4c5f3d68d:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/mmx.c
.del-mmu_context.c~ef75b8e1f894e729:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/mmu_context.c
.del-memcpy.c~91d0cb7e4e922f6e:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/memcpy.c
.del-ll_rw_blk.c~2c64b7fc36db523:
Delete: old/xenolinux-2.4.16-sparse/drivers/block/ll_rw_blk.c
.del-ldt.c~102d26cc1b63c830:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ldt.c
.del-irq.c~2bd9b09d889fd6b8:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/irq.c
.del-ioport.c~2d86d4fbba2e2583:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/ioport.c
.del-iodebug.c~982cc58799104651:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/iodebug.c
.del-init_task.c~53258077ed40d6be:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/init_task.c
.del-init.c~3693c99014d6fc0d:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c
.del-i387.c~571a2fa27676375:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/i387.c
.del-i386_ksyms.c~68a55ed15a69598:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/kernel/i386_ksyms.c
.del-hypervisor.c~a227c7d0b6a5fd42:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/hypervisor.c
.del-getuser.S~1ef189b582390381:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/getuser.S
.del-get_unmapped_area.c~3ad7561469aabec:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c
.del-fault.c~4f5a4a1859484525:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/fault.c
.del-extable.c~b98087717f427f26:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/extable.c
.del-exec.c~2557f6564ffdb2e0:
Delete: old/xenolinux-2.4.16-sparse/fs/exec.c
.del-delay.c~bddd92dcfafdf5ce:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/delay.c
.del-dec_and_lock.c~5ac45f1c3a6593c:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/dec_and_lock.c
.del-checksum.S~be8f8ce2d8964249:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/checksum.S
.del-apic.h~7e52954d00c0c4f:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/apic.h
.del-a.out.h~7ace48e4361e6b64:
Delete: old/xenolinux-2.4.16-sparse/include/asm-xeno/a.out.h
.del-Makefile~92a08e51252c8752:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/lib/Makefile
.del-Makefile~4b457be6621a5d5a:
Delete: old/xenolinux-2.4.16-sparse/arch/xeno/mm/Makefile
.del-Config.in~e79aa726643e8d8f:
Delete: old/xenolinux-2.4.16-sparse/drivers/block/Config.in
.del-xl_block_test.c~aac5669d8f638637:
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Diffstat (limited to 'old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c')
-rw-r--r-- | old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c b/old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c deleted file mode 100644 index eb5757cdc2..0000000000 --- a/old/xenolinux-2.4.16-sparse/arch/xeno/kernel/time.c +++ /dev/null @@ -1,350 +0,0 @@ -/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- - **************************************************************************** - * (C) 2002 - Rolf Neugebauer - Intel Research Cambridge - **************************************************************************** - * - * File: arch.xeno/time.c - * Author: Rolf Neugebauer - * Changes: - * - * Date: Nov 2002 - * - * Environment: XenoLinux - * Description: Interface with Hypervisor to get correct notion of time - * Currently supports Systemtime and WallClock time. - * - * (This has hardly any resemblence with the Linux code but left the - * copyright notice anyway. Ignore the comments in the copyright notice.) - **************************************************************************** - * $Id: c-insert.c,v 1.7 2002/11/08 16:04:34 rn Exp $ - **************************************************************************** - */ - -/* - * linux/arch/i386/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * - * This file contains the PC-specific time handling details: - * reading the RTC at bootup, etc.. - * 1994-07-02 Alan Modra - * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime - * 1995-03-26 Markus Kuhn - * fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887 - * precision CMOS clock update - * 1996-05-03 Ingo Molnar - * fixed time warps in do_[slow|fast]_gettimeoffset() - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - * 1998-09-05 (Various) - * More robust do_fast_gettimeoffset() algorithm implemented - * (works with APM, Cyrix 6x86MX and Centaur C6), - * monotonic gettimeofday() with fast_get_timeoffset(), - * drift-proof precision TSC calibration on boot - * (C. Scott Ananian <cananian@alumni.princeton.edu>, Andrew D. - * Balsa <andrebalsa@altern.org>, Philip Gladstone <philip@raptor.com>; - * ported from 2.0.35 Jumbo-9 by Michael Krause <m.krause@tu-harburg.de>). - * 1998-12-16 Andrea Arcangeli - * Fixed Jumbo-9 code in 2.1.131: do_gettimeofday was missing 1 jiffy - * because was not accounting lost_ticks. - * 1998-12-24 Copyright (C) 1998 Andrea Arcangeli - * Fixed a xtime SMP race (we need the xtime_lock rw spinlock to - * serialize accesses to xtime/lost_ticks). - */ - -#include <asm/smp.h> -#include <asm/irq.h> -#include <asm/msr.h> -#include <asm/delay.h> -#include <asm/mpspec.h> -#include <asm/uaccess.h> -#include <asm/processor.h> - -#include <asm/div64.h> -#include <asm/hypervisor.h> - -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/time.h> -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/irq.h> - -#undef XENO_TIME_DEBUG /* adds sanity checks and periodic printouts */ - -spinlock_t rtc_lock = SPIN_LOCK_UNLOCKED; -extern rwlock_t xtime_lock; - -unsigned long cpu_khz; /* get this from Xen, used elsewhere */ -static spinlock_t hyp_stime_lock = SPIN_LOCK_UNLOCKED; -static spinlock_t hyp_wctime_lock = SPIN_LOCK_UNLOCKED; - -static u32 st_scale_f; -static u32 st_scale_i; -static u32 shadow_st_pcc; -static s64 shadow_st; - -/* - * System time. - * Although the rest of the Linux kernel doesn't know about this, we - * we use it to extrapolate passage of wallclock time. - * We need to read the values from the shared info page "atomically" - * and use the cycle counter value as the "version" number. Clashes - * should be very rare. - */ -static inline long long get_s_time(void) -{ - unsigned long flags; - u32 delta_tsc, low, pcc; - u64 delta; - s64 now; - - spin_lock_irqsave(&hyp_stime_lock, flags); - - while ((pcc = HYPERVISOR_shared_info->st_timestamp) != shadow_st_pcc) - { - barrier(); - shadow_st_pcc = pcc; - shadow_st = HYPERVISOR_shared_info->system_time; - barrier(); - } - - now = shadow_st; - /* only use bottom 32bits of TSC. This should be sufficient */ - rdtscl(low); - delta_tsc = low - pcc; - delta = ((u64)delta_tsc * st_scale_f); - delta >>= 32; - delta += ((u64)delta_tsc * st_scale_i); - - spin_unlock_irqrestore(&hyp_time_lock, flags); - - return now + delta; - -} -#define NOW() ((long long)get_s_time()) - -/* - * Wallclock time. - * Based on what the hypervisor tells us, extrapolated using system time. - * Again need to read a number of values from the shared page "atomically". - * this time using a version number. - */ -static u32 shadow_wc_version=0; -static long shadow_tv_sec; -static long shadow_tv_usec; -static long long shadow_wc_timestamp; -void do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - long usec, sec; - u32 version; - u64 now; - - spin_lock_irqsave(&hyp_wctime_lock, flags); - - while ((version = HYPERVISOR_shared_info->wc_version)!= shadow_wc_version) - { - barrier(); - shadow_wc_version = version; - shadow_tv_sec = HYPERVISOR_shared_info->tv_sec; - shadow_tv_usec = HYPERVISOR_shared_info->tv_usec; - shadow_wc_timestamp = HYPERVISOR_shared_info->wc_timestamp; - barrier(); - } - - now = NOW(); - usec = ((unsigned long)(now-shadow_wc_timestamp))/1000; - sec = shadow_tv_sec; - usec += shadow_tv_usec; - - while ( usec >= 1000000 ) - { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; - - spin_unlock_irqrestore(&hyp_time_lock, flags); - -#ifdef XENO_TIME_DEBUG - { - static long long old_now=0; - static long long wct=0, old_wct=0; - - /* This debug code checks if time increase over two subsequent calls */ - wct=(((long long)sec) * 1000000) + usec; - /* wall clock time going backwards */ - if ((wct < old_wct) ) { - printk("Urgh1: wc diff=%6ld, usec = %ld (0x%lX)\n", - (long)(wct-old_wct), usec, usec); - printk(" st diff=%lld cur st=0x%016llX old st=0x%016llX\n", - now-old_now, now, old_now); - } - - /* system time going backwards */ - if (now<=old_now) { - printk("Urgh2: st diff=%lld cur st=0x%016llX old st=0x%016llX\n", - now-old_now, now, old_now); - } - old_wct = wct; - old_now = now; - } -#endif - -} - -void do_settimeofday(struct timeval *tv) -{ -/* XXX RN: should do something special here for dom0 */ -#if 0 - write_lock_irq(&xtime_lock); - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * made, and then undo it! - */ - tv->tv_usec -= do_gettimeoffset(); - tv->tv_usec -= (jiffies - wall_jiffies) * (1000000 / HZ); - - while ( tv->tv_usec < 0 ) - { - tv->tv_usec += 1000000; - tv->tv_sec--; - } - - xtime = *tv; - time_adjust = 0; /* stop active adjtime() */ - time_status |= STA_UNSYNC; - time_maxerror = NTP_PHASE_LIMIT; - time_esterror = NTP_PHASE_LIMIT; - write_unlock_irq(&xtime_lock); -#endif -} - - -/* - * Timer ISR. - * Unlike normal Linux these don't come in at a fixed rate of HZ. - * In here we wrok out how often it should have been called and then call - * the architecture independent part (do_timer()) the appropriate number of - * times. A bit of a nasty hack, to keep the "other" notion of wallclock time - * happy. - */ -static long long us_per_tick=1000000/HZ; -static long long last_irq; -static inline void do_timer_interrupt(int irq, void *dev_id, - struct pt_regs *regs) -{ - struct timeval tv; - long long time, delta; - -#ifdef XENO_TIME_DEBUG - static u32 foo_count = 0; - foo_count++; - if (foo_count>= 1000) { - s64 n = NOW(); - struct timeval tv; - do_gettimeofday(&tv); - printk("0x%08X%08X %ld:%ld\n", - (u32)(n>>32), (u32)n, tv.tv_sec, tv.tv_usec); - foo_count = 0; - } -#endif - /* - * The next bit really sucks: - * Linux not only uses do_gettimeofday() to keep a notion of - * wallclock time, but also maintains the xtime struct and jiffies. - * (Even worse some userland code accesses this via the sys_time() - * system call) - * Unfortunately, xtime is maintain in the architecture independent - * part of the timer ISR (./kernel/timer.c sic!). So, although we have - * perfectly valid notion of wallclock time from the hypervisor we here - * fake missed timer interrupts so that the arch independent part of - * the Timer ISR updates jiffies for us *and* once the bh gets run - * updates xtime accordingly. Yuck! - */ - - /* work out the number of jiffies past and update them */ - do_gettimeofday(&tv); - time = (((long long)tv.tv_sec) * 1000000) + tv.tv_usec; - delta = time - last_irq; - if (delta <= 0) { - printk ("Timer ISR: Time went backwards: %lld\n", delta); - return; - } - while (delta >= us_per_tick) { - do_timer(regs); - delta -= us_per_tick; - last_irq += us_per_tick; - } - -#if 0 - if (!user_mode(regs)) - x86_do_profile(regs->eip); -#endif -} - -static void timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - write_lock(&xtime_lock); - do_timer_interrupt(irq, NULL, regs); - write_unlock(&xtime_lock); -} - -static struct irqaction irq_timer = { - timer_interrupt, - SA_INTERRUPT, - 0, - "timer", - NULL, - NULL -}; - -void __init time_init(void) -{ - unsigned long long alarm; - u64 cpu_freq = HYPERVISOR_shared_info->cpu_freq; - u64 scale; - - do_get_fast_time = do_gettimeofday; - - cpu_khz = (u32)cpu_freq/1000; - printk("Xen reported: %lu.%03lu MHz processor.\n", - cpu_khz / 1000, cpu_khz % 1000); - - /* - * calculate systemtime scaling factor - * XXX RN: have to cast cpu_freq to u32 limits it to 4.29 GHz. - * Get a better do_div! - */ - scale = 1000000000LL << 32; - do_div(scale,(u32)cpu_freq); - st_scale_f = scale & 0xffffffff; - st_scale_i = scale >> 32; - printk("System Time scale: %X %X\n",st_scale_i, st_scale_f); - - do_gettimeofday(&xtime); - last_irq = (((long long)xtime.tv_sec) * 1000000) + xtime.tv_usec; - - setup_irq(TIMER_IRQ, &irq_timer); - - /* - * Start ticker. Note that timing runs of wall clock, not virtual - * 'domain' time. This means that clock sshould run at the correct - * rate. For things like scheduling, it's not clear whether it - * matters which sort of time we use. - * XXX RN: unimplemented. - */ - - rdtscll(alarm); -#if 0 - alarm += (1000/HZ)*HYPERVISOR_shared_info->ticks_per_ms; - HYPERVISOR_shared_info->wall_timeout = alarm; - HYPERVISOR_shared_info->domain_timeout = ~0ULL; -#endif - clear_bit(_EVENT_TIMER, &HYPERVISOR_shared_info->events); -} |