[S390] Remove config options.

On s390 we always want to run with precise cputime accounting.
Remove the config options VIRT_TIMER and VIRT_CPU_ACCOUNTING.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 files changed, 20 insertions, 143 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 7a18d2380e2c..8152fefc97b9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -69,6 +69,9 @@ config PGSTE
         bool
         default y if KVM
 
+config VIRT_CPU_ACCOUNTING
+        def_bool y
+
 mainmenu "Linux Kernel Configuration"
 
 config S390
@@ -469,22 +472,9 @@ config PAGE_STATES
           hypervisor. The ESSA instruction is used to do the states
           changes between a page that has content and the unused state.
 
-config VIRT_TIMER
-        bool "Virtual CPU timer support"
-        help
-          This provides a kernel interface for virtual CPU timers.
-          Default is disabled.
-
-config VIRT_CPU_ACCOUNTING
-        bool "Base user process accounting on virtual cpu timer"
-        depends on VIRT_TIMER
-        help
-          Select this option to use CPU timer deltas to do user
-          process accounting.
-
 config APPLDATA_BASE
         bool "Linux - VM Monitor Stream, base infrastructure"
-        depends on PROC_FS && VIRT_TIMER=y
+        depends on PROC_FS
         help
           This provides a kernel interface for creating and updating z/VM APPLDATA
           monitor records. The monitor records are updated at certain time
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index c17a3cfbe242..024ef42ed6d7 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -99,13 +99,9 @@ static inline void restore_access_regs(unsigned int *acrs)
         prev = __switch_to(prev,next);                                       \
 } while (0)
 
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 extern void account_vtime(struct task_struct *);
 extern void account_tick_vtime(struct task_struct *);
 extern void account_system_vtime(struct task_struct *);
-#else
-#define account_vtime(x) do { /* empty */ } while (0)
-#endif
 
 #ifdef CONFIG_PFAULT
 extern void pfault_irq_init(void);
diff --git a/arch/s390/include/asm/timer.h b/arch/s390/include/asm/timer.h
index d98d79e35cd6..61705d60f995 100644
--- a/arch/s390/include/asm/timer.h
+++ b/arch/s390/include/asm/timer.h
@@ -48,18 +48,9 @@ extern int del_virt_timer(struct vtimer_list *timer);
 extern void init_cpu_vtimer(void);
 extern void vtime_init(void);
 
-#ifdef CONFIG_VIRT_TIMER
-
 extern void vtime_start_cpu_timer(void);
 extern void vtime_stop_cpu_timer(void);
 
-#else
-
-static inline void vtime_start_cpu_timer(void) { }
-static inline void vtime_stop_cpu_timer(void) { }
-
-#endif /* CONFIG_VIRT_TIMER */
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_S390_TIMER_H */
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 92730cc3cdb4..90dad65c20ec 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -20,7 +20,7 @@ CFLAGS_ptrace.o		+= -DUTS_MACHINE='"$(UTS_MACHINE)"'
 obj-y   :=  bitmap.o traps.o time.o process.o base.o early.o \
             setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
             s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
-            vdso.o
+            vdso.o vtime.o
 
 obj-y   += $(if $(CONFIG_64BIT),entry64.o,entry.o)
 obj-y   += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
@@ -36,7 +36,6 @@ obj-$(CONFIG_COMPAT)		+= compat_linux.o compat_signal.o \
                                         compat_wrapper.o compat_exec_domain.o \
                                         $(compat-obj-y)
 
-obj-$(CONFIG_VIRT_TIMER)        += vtime.o
 obj-$(CONFIG_STACKTRACE)        += stacktrace.o
 obj-$(CONFIG_KPROBES)           += kprobes.o
 obj-$(CONFIG_FUNCTION_TRACER)   += mcount.o
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index c1cfc7e39ec9..55de521aef77 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -109,13 +109,6 @@ STACK_SIZE  = 1 << STACK_SHIFT
  *    R15 - kernel stack pointer
  */
 
-        .macro  STORE_TIMER lc_offset
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
-        stpt    \lc_offset
-#endif
-        .endm
-
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .macro  UPDATE_VTIME lc_from,lc_to,lc_sum
         lm      %r10,%r11,\lc_from
         sl      %r10,\lc_to
@@ -128,7 +121,6 @@ STACK_SIZE  = 1 << STACK_SHIFT
         al      %r10,BASED(.Lc_1)
 1:      stm     %r10,%r11,\lc_sum
         .endm
-#endif
 
         .macro  SAVE_ALL_BASE savearea
         stm     %r12,%r15,\savearea
@@ -198,7 +190,7 @@ STACK_SIZE  = 1 << STACK_SHIFT
         ni      \psworg+1,0xfd          # clear wait state bit
         .endif
         lm      %r0,%r15,SP_R0(%r15)    # load gprs 0-15 of user
-        STORE_TIMER __LC_EXIT_TIMER
+        stpt    __LC_EXIT_TIMER
         lpsw    \psworg                 # back to caller
         .endm
 
@@ -247,20 +239,18 @@ __critical_start:
 
         .globl  system_call
 system_call:
-        STORE_TIMER __LC_SYNC_ENTER_TIMER
+        stpt    __LC_SYNC_ENTER_TIMER
 sysc_saveall:
         SAVE_ALL_BASE __LC_SAVE_AREA
         SAVE_ALL_SVC __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         lh      %r7,0x8a          # get svc number from lowcore
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 sysc_vtime:
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
 sysc_stime:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
 sysc_update:
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
 sysc_do_svc:
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         ltr     %r7,%r7                 # test for svc 0
@@ -490,20 +480,18 @@ pgm_check_handler:
  * we just ignore the PER event (FIXME: is there anything we have to do
  * for LPSW?).
  */
-        STORE_TIMER __LC_SYNC_ENTER_TIMER
+        stpt    __LC_SYNC_ENTER_TIMER
         SAVE_ALL_BASE __LC_SAVE_AREA
         tm      __LC_PGM_INT_CODE+1,0x80 # check whether we got a per exception
         bnz     BASED(pgm_per)          # got per exception -> special case
         SAVE_ALL_SYNC __LC_PGM_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_PGM_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         bz      BASED(pgm_no_vtime)
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
 pgm_no_vtime:
-#endif
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         l       %r3,__LC_PGM_ILC        # load program interruption code
@@ -536,14 +524,12 @@ pgm_per:
 pgm_per_std:
         SAVE_ALL_SYNC __LC_PGM_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_PGM_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         bz      BASED(pgm_no_vtime2)
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
 pgm_no_vtime2:
-#endif
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         l       %r1,__TI_task(%r9)
@@ -565,11 +551,9 @@ pgm_no_vtime2:
 pgm_svcper:
         SAVE_ALL_SYNC __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
         lh      %r7,0x8a                # get svc number from lowcore
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
@@ -599,19 +583,17 @@ kernel_per:
 
         .globl io_int_handler
 io_int_handler:
-        STORE_TIMER __LC_ASYNC_ENTER_TIMER
+        stpt    __LC_ASYNC_ENTER_TIMER
         stck    __LC_INT_CLOCK
         SAVE_ALL_BASE __LC_SAVE_AREA+16
         SAVE_ALL_ASYNC __LC_IO_OLD_PSW,__LC_SAVE_AREA+16
         CREATE_STACK_FRAME __LC_IO_OLD_PSW,__LC_SAVE_AREA+16
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         bz      BASED(io_no_vtime)
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 io_no_vtime:
-#endif
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         l       %r1,BASED(.Ldo_IRQ)     # load address of do_IRQ
@@ -741,19 +723,17 @@ io_notify_resume:
 
         .globl  ext_int_handler
 ext_int_handler:
-        STORE_TIMER __LC_ASYNC_ENTER_TIMER
+        stpt    __LC_ASYNC_ENTER_TIMER
         stck    __LC_INT_CLOCK
         SAVE_ALL_BASE __LC_SAVE_AREA+16
         SAVE_ALL_ASYNC __LC_EXT_OLD_PSW,__LC_SAVE_AREA+16
         CREATE_STACK_FRAME __LC_EXT_OLD_PSW,__LC_SAVE_AREA+16
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         bz      BASED(ext_no_vtime)
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 ext_no_vtime:
-#endif
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
@@ -776,7 +756,6 @@ mcck_int_handler:
         la      %r12,__LC_MCK_OLD_PSW
         tm      __LC_MCCK_CODE,0x80     # system damage?
         bo      BASED(mcck_int_main)    # yes -> rest of mcck code invalid
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_SAVE_AREA+52(8),__LC_ASYNC_ENTER_TIMER
         mvc     __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA
         tm      __LC_MCCK_CODE+5,0x02   # stored cpu timer value valid?
@@ -793,9 +772,7 @@ mcck_int_handler:
         la      %r14,__LC_LAST_UPDATE_TIMER
 0:      spt     0(%r14)
         mvc     __LC_ASYNC_ENTER_TIMER(8),0(%r14)
-1:
-#endif
-        tm      __LC_MCCK_CODE+2,0x09   # mwp + ia of old psw valid?
+1:      tm      __LC_MCCK_CODE+2,0x09   # mwp + ia of old psw valid?
         bno     BASED(mcck_int_main)    # no -> skip cleanup critical
         tm      __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
         bnz     BASED(mcck_int_main)    # from user -> load async stack
@@ -812,7 +789,6 @@ mcck_int_main:
         be      BASED(0f)
         l       %r15,__LC_PANIC_STACK   # load panic stack
 0:      CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+32
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      __LC_MCCK_CODE+2,0x08   # mwp of old psw valid?
         bno     BASED(mcck_no_vtime)    # no -> skip cleanup critical
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
@@ -821,7 +797,6 @@ mcck_int_main:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 mcck_no_vtime:
-#endif
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         la      %r2,SP_PTREGS(%r15)     # load pt_regs
         l       %r1,BASED(.Ls390_mcck)
@@ -843,16 +818,13 @@ mcck_no_vtime:
 mcck_return:
         mvc     __LC_RETURN_MCCK_PSW(8),SP_PSW(%r15) # move return PSW
         ni      __LC_RETURN_MCCK_PSW+1,0xfd # clear wait state bit
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_ASYNC_ENTER_TIMER(8),__LC_SAVE_AREA+52
         tm      __LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
         bno     BASED(0f)
         lm      %r0,%r15,SP_R0(%r15)    # load gprs 0-15
         stpt    __LC_EXIT_TIMER
         lpsw    __LC_RETURN_MCCK_PSW    # back to caller
-0:
-#endif
-        lm      %r0,%r15,SP_R0(%r15)    # load gprs 0-15
+0:      lm      %r0,%r15,SP_R0(%r15)    # load gprs 0-15
         lpsw    __LC_RETURN_MCCK_PSW    # back to caller
 
         RESTORE_ALL __LC_RETURN_MCCK_PSW,0
@@ -976,13 +948,11 @@ cleanup_system_call:
         b       BASED(1f)
 0:      la      %r12,__LC_SAVE_AREA+32
 1:
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         clc     __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+4)
         bh      BASED(0f)
         mvc     __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
 0:      clc     __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+8)
         bhe     BASED(cleanup_vtime)
-#endif
         clc     __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn)
         bh      BASED(0f)
         mvc     __LC_SAVE_AREA(16),0(%r12)
@@ -993,7 +963,6 @@ cleanup_system_call:
         l       %r12,__LC_SAVE_AREA+48  # argh
         st      %r15,12(%r12)
         lh      %r7,0x8a
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 cleanup_vtime:
         clc     __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+12)
         bhe     BASED(cleanup_stime)
@@ -1004,18 +973,15 @@ cleanup_stime:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
 cleanup_update:
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
         mvc     __LC_RETURN_PSW+4(4),BASED(cleanup_table_system_call+4)
         la      %r12,__LC_RETURN_PSW
         br      %r14
 cleanup_system_call_insn:
         .long   sysc_saveall + 0x80000000
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .long   system_call + 0x80000000
         .long   sysc_vtime + 0x80000000
         .long   sysc_stime + 0x80000000
         .long   sysc_update + 0x80000000
-#endif
 
 cleanup_sysc_return:
         mvc     __LC_RETURN_PSW(4),0(%r12)
@@ -1026,11 +992,9 @@ cleanup_sysc_return:
 cleanup_sysc_leave:
         clc     4(4,%r12),BASED(cleanup_sysc_leave_insn)
         be      BASED(2f)
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
         clc     4(4,%r12),BASED(cleanup_sysc_leave_insn+4)
         be      BASED(2f)
-#endif
         mvc     __LC_RETURN_PSW(8),SP_PSW(%r15)
         c       %r12,BASED(.Lmck_old_psw)
         bne     BASED(0f)
@@ -1043,9 +1007,7 @@ cleanup_sysc_leave:
         br      %r14
 cleanup_sysc_leave_insn:
         .long   sysc_done - 4 + 0x80000000
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .long   sysc_done - 8 + 0x80000000
-#endif
 
 cleanup_io_return:
         mvc     __LC_RETURN_PSW(4),0(%r12)
@@ -1056,11 +1018,9 @@ cleanup_io_return:
 cleanup_io_leave:
         clc     4(4,%r12),BASED(cleanup_io_leave_insn)
         be      BASED(2f)
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
         clc     4(4,%r12),BASED(cleanup_io_leave_insn+4)
         be      BASED(2f)
-#endif
         mvc     __LC_RETURN_PSW(8),SP_PSW(%r15)
         c       %r12,BASED(.Lmck_old_psw)
         bne     BASED(0f)
@@ -1073,9 +1033,7 @@ cleanup_io_leave:
         br      %r14
 cleanup_io_leave_insn:
         .long   io_done - 4 + 0x80000000
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .long   io_done - 8 + 0x80000000
-#endif
 
 /*
  * Integer constants
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index ea90d9a676f8..16bb4fd1a403 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -96,20 +96,12 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
 #define LOCKDEP_SYS_EXIT
 #endif
 
-        .macro  STORE_TIMER lc_offset
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
-        stpt    \lc_offset
-#endif
-        .endm
-
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .macro  UPDATE_VTIME lc_from,lc_to,lc_sum
         lg      %r10,\lc_from
         slg     %r10,\lc_to
         alg     %r10,\lc_sum
         stg     %r10,\lc_sum
         .endm
-#endif
 
 /*
  * Register usage in interrupt handlers:
@@ -186,7 +178,7 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
         ni      \psworg+1,0xfd          # clear wait state bit
         .endif
         lmg     %r0,%r15,SP_R0(%r15)    # load gprs 0-15 of user
-        STORE_TIMER __LC_EXIT_TIMER
+        stpt    __LC_EXIT_TIMER
         lpswe   \psworg                 # back to caller
         .endm
 
@@ -233,20 +225,18 @@ __critical_start:
 
         .globl  system_call
 system_call:
-        STORE_TIMER __LC_SYNC_ENTER_TIMER
+        stpt    __LC_SYNC_ENTER_TIMER
 sysc_saveall:
         SAVE_ALL_BASE __LC_SAVE_AREA
         SAVE_ALL_SVC __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         llgh    %r7,__LC_SVC_INT_CODE   # get svc number from lowcore
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 sysc_vtime:
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
 sysc_stime:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
 sysc_update:
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
 sysc_do_svc:
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         ltgr    %r7,%r7         # test for svc 0
@@ -469,20 +459,18 @@ pgm_check_handler:
  * we just ignore the PER event (FIXME: is there anything we have to do
  * for LPSW?).
  */
-        STORE_TIMER __LC_SYNC_ENTER_TIMER
+        stpt    __LC_SYNC_ENTER_TIMER
         SAVE_ALL_BASE __LC_SAVE_AREA
         tm      __LC_PGM_INT_CODE+1,0x80 # check whether we got a per exception
         jnz     pgm_per                  # got per exception -> special case
         SAVE_ALL_SYNC __LC_PGM_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_PGM_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         jz      pgm_no_vtime
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
 pgm_no_vtime:
-#endif
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         mvc     SP_ARGS(8,%r15),__LC_LAST_BREAK
         TRACE_IRQS_OFF
@@ -516,14 +504,12 @@ pgm_per:
 pgm_per_std:
         SAVE_ALL_SYNC __LC_PGM_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_PGM_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         jz      pgm_no_vtime2
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
 pgm_no_vtime2:
-#endif
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         lg      %r1,__TI_task(%r9)
@@ -545,11 +531,9 @@ pgm_no_vtime2:
 pgm_svcper:
         SAVE_ALL_SYNC __LC_SVC_OLD_PSW,__LC_SAVE_AREA
         CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
         llgh    %r7,__LC_SVC_INT_CODE   # get svc number from lowcore
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         lg      %r1,__TI_task(%r9)
@@ -575,19 +559,17 @@ kernel_per:
  */
         .globl io_int_handler
 io_int_handler:
-        STORE_TIMER __LC_ASYNC_ENTER_TIMER
+        stpt    __LC_ASYNC_ENTER_TIMER
         stck    __LC_INT_CLOCK
         SAVE_ALL_BASE __LC_SAVE_AREA+32
         SAVE_ALL_ASYNC __LC_IO_OLD_PSW,__LC_SAVE_AREA+32
         CREATE_STACK_FRAME __LC_IO_OLD_PSW,__LC_SAVE_AREA+32
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         jz      io_no_vtime
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 io_no_vtime:
-#endif
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
@@ -739,19 +721,17 @@ io_notify_resume:
  */
         .globl  ext_int_handler
 ext_int_handler:
-        STORE_TIMER __LC_ASYNC_ENTER_TIMER
+        stpt    __LC_ASYNC_ENTER_TIMER
         stck    __LC_INT_CLOCK
         SAVE_ALL_BASE __LC_SAVE_AREA+32
         SAVE_ALL_ASYNC __LC_EXT_OLD_PSW,__LC_SAVE_AREA+32
         CREATE_STACK_FRAME __LC_EXT_OLD_PSW,__LC_SAVE_AREA+32
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
         jz      ext_no_vtime
         UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 ext_no_vtime:
-#endif
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         TRACE_IRQS_OFF
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
@@ -773,7 +753,6 @@ mcck_int_handler:
         la      %r12,__LC_MCK_OLD_PSW
         tm      __LC_MCCK_CODE,0x80     # system damage?
         jo      mcck_int_main           # yes -> rest of mcck code invalid
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         la      %r14,4095
         mvc     __LC_SAVE_AREA+104(8),__LC_ASYNC_ENTER_TIMER
         mvc     __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA-4095(%r14)
@@ -791,9 +770,7 @@ mcck_int_handler:
         la      %r14,__LC_LAST_UPDATE_TIMER
 0:      spt     0(%r14)
         mvc     __LC_ASYNC_ENTER_TIMER(8),0(%r14)
-1:
-#endif
-        tm      __LC_MCCK_CODE+2,0x09   # mwp + ia of old psw valid?
+1:      tm      __LC_MCCK_CODE+2,0x09   # mwp + ia of old psw valid?
         jno     mcck_int_main           # no -> skip cleanup critical
         tm      __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
         jnz     mcck_int_main           # from user -> load kernel stack
@@ -809,7 +786,6 @@ mcck_int_main:
         jz      0f
         lg      %r15,__LC_PANIC_STACK   # load panic stack
 0:      CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+64
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         tm      __LC_MCCK_CODE+2,0x08   # mwp of old psw valid?
         jno     mcck_no_vtime           # no -> no timer update
         tm      SP_PSW+1(%r15),0x01     # interrupting from user ?
@@ -818,7 +794,6 @@ mcck_int_main:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
 mcck_no_vtime:
-#endif
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
         la      %r2,SP_PTREGS(%r15)     # load pt_regs
         brasl   %r14,s390_do_machine_check
@@ -839,14 +814,11 @@ mcck_return:
         mvc     __LC_RETURN_MCCK_PSW(16),SP_PSW(%r15) # move return PSW
         ni      __LC_RETURN_MCCK_PSW+1,0xfd # clear wait state bit
         lmg     %r0,%r15,SP_R0(%r15)    # load gprs 0-15
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_ASYNC_ENTER_TIMER(8),__LC_SAVE_AREA+104
         tm      __LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
         jno     0f
         stpt    __LC_EXIT_TIMER
-0:
-#endif
-        lpswe   __LC_RETURN_MCCK_PSW    # back to caller
+0:      lpswe   __LC_RETURN_MCCK_PSW    # back to caller
 
 /*
  * Restart interruption handler, kick starter for additional CPUs
@@ -964,13 +936,11 @@ cleanup_system_call:
         j       1f
 0:      la      %r12,__LC_SAVE_AREA+64
 1:
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         clc     __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+8)
         jh      0f
         mvc     __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
 0:      clc     __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+16)
         jhe     cleanup_vtime
-#endif
         clc     __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn)
         jh      0f
         mvc     __LC_SAVE_AREA(32),0(%r12)
@@ -981,7 +951,6 @@ cleanup_system_call:
         lg      %r12,__LC_SAVE_AREA+96  # argh
         stg     %r15,24(%r12)
         llgh    %r7,__LC_SVC_INT_CODE
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 cleanup_vtime:
         clc     __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+24)
         jhe     cleanup_stime
@@ -992,18 +961,15 @@ cleanup_stime:
         UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
 cleanup_update:
         mvc     __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
-#endif
         mvc     __LC_RETURN_PSW+8(8),BASED(cleanup_table_system_call+8)
         la      %r12,__LC_RETURN_PSW
         br      %r14
 cleanup_system_call_insn:
         .quad   sysc_saveall
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .quad   system_call
         .quad   sysc_vtime
         .quad   sysc_stime
         .quad   sysc_update
-#endif
 
 cleanup_sysc_return:
         mvc     __LC_RETURN_PSW(8),0(%r12)
@@ -1014,11 +980,9 @@ cleanup_sysc_return:
 cleanup_sysc_leave:
         clc     8(8,%r12),BASED(cleanup_sysc_leave_insn)
         je      2f
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
         clc     8(8,%r12),BASED(cleanup_sysc_leave_insn+8)
         je      2f
-#endif
         mvc     __LC_RETURN_PSW(16),SP_PSW(%r15)
         cghi    %r12,__LC_MCK_OLD_PSW
         jne     0f
@@ -1031,9 +995,7 @@ cleanup_sysc_leave:
         br      %r14
 cleanup_sysc_leave_insn:
         .quad   sysc_done - 4
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .quad   sysc_done - 8
-#endif
 
 cleanup_io_return:
         mvc     __LC_RETURN_PSW(8),0(%r12)
@@ -1044,11 +1006,9 @@ cleanup_io_return:
 cleanup_io_leave:
         clc     8(8,%r12),BASED(cleanup_io_leave_insn)
         je      2f
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         mvc     __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
         clc     8(8,%r12),BASED(cleanup_io_leave_insn+8)
         je      2f
-#endif
         mvc     __LC_RETURN_PSW(16),SP_PSW(%r15)
         cghi    %r12,__LC_MCK_OLD_PSW
         jne     0f
@@ -1061,9 +1021,7 @@ cleanup_io_leave:
         br      %r14
 cleanup_io_leave_insn:
         .quad   io_done - 4
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
         .quad   io_done - 8
-#endif
 
 /*
  * Integer constants
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 176a43e5b8b4..bf170c698f0c 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -441,10 +441,8 @@ int __cpuinit start_secondary(void *cpuvoid)
         preempt_disable();
         /* Enable TOD clock interrupts on the secondary cpu. */
         init_cpu_timer();
-#ifdef CONFIG_VIRT_TIMER
         /* Enable cpu timer interrupts on the secondary cpu. */
         init_cpu_vtimer();
-#endif
         /* Enable pfault pseudo page faults on this cpu. */
         pfault_init();
 
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 496528561248..95620296e1ad 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -286,10 +286,8 @@ void __init time_init(void)
 
         /* Enable TOD clock interrupts on the boot cpu. */
         init_cpu_timer();
-
-#ifdef CONFIG_VIRT_TIMER
+        /* Enable cpu timer interrupts on the boot cpu. */
         vtime_init();
-#endif
 }
 
 /*
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 0fa5dc5d68e1..75a6e62ea973 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -27,7 +27,6 @@
 static ext_int_info_t ext_int_info_timer;
 static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
 
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
 /*
  * Update process times based on virtual cpu times stored by entry.S
  * to the lowcore fields user_timer, system_timer & steal_clock.
@@ -125,16 +124,6 @@ static inline void set_vtimer(__u64 expires)
         /* store expire time for this CPU timer */
         __get_cpu_var(virt_cpu_timer).to_expire = expires;
 }
-#else
-static inline void set_vtimer(__u64 expires)
-{
-        S390_lowcore.last_update_timer = expires;
-        asm volatile ("SPT %0" : : "m" (S390_lowcore.last_update_timer));
-
-        /* store expire time for this CPU timer */
-        __get_cpu_var(virt_cpu_timer).to_expire = expires;
-}
-#endif
 
 void vtime_start_cpu_timer(void)
 {