1 files changed, 8 insertions, 50 deletions

diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 89c121ae6339..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
@@ -417,7 +407,7 @@ ret_from_fork:
 0:      brasl   %r14,schedule_tail
         TRACE_IRQS_ON
         stosm   24(%r15),0x03           # reenable interrupts
-        j       sysc_return
+        j       sysc_tracenogo
 
 #
 # kernel_execve function needs to deal with pt_regs that is not
@@ -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