diff options
Diffstat (limited to 'arch/s390/kernel/vdso64/clock_gettime.S')
| -rw-r--r-- | arch/s390/kernel/vdso64/clock_gettime.S | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S index 9c3b12626dba..6046b3bfca46 100644 --- a/arch/s390/kernel/vdso64/clock_gettime.S +++ b/arch/s390/kernel/vdso64/clock_gettime.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Userland implementation of clock_gettime() for 64 bits processes in a * s390 kernel for use in the vDSO * * Copyright IBM Corp. 2008 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License (version 2 only) - * as published by the Free Software Foundation. */ #include <asm/vdso.h> #include <asm/asm-offsets.h> @@ -114,23 +111,12 @@ __kernel_clock_gettime: br %r14 /* CPUCLOCK_VIRT for this thread */ -9: icm %r0,15,__VDSO_ECTG_OK(%r5) +9: lghi %r4,0 + icm %r0,15,__VDSO_ECTG_OK(%r5) jz 12f - ear %r2,%a4 - llilh %r4,0x0100 - sar %a4,%r4 - lghi %r4,0 - epsw %r5,0 - sacf 512 /* Magic ectg instruction */ + sacf 256 /* Magic ectg instruction */ .insn ssf,0xc80100000000,__VDSO_ECTG_BASE(4),__VDSO_ECTG_USER(4),4 - tml %r5,0x4000 - jo 11f - tml %r5,0x8000 - jno 10f - sacf 256 - j 11f -10: sacf 0 -11: sar %a4,%r2 + sacf 0 algr %r1,%r0 /* r1 = cputime as TOD value */ mghi %r1,1000 /* convert to nanoseconds */ srlg %r1,%r1,12 /* r1 = cputime in nanosec */ |