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| author | Tony Luck <tony.luck@intel.com> | 2008-04-17 19:12:27 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-04-17 19:12:27 +0200 |
| commit | 14d0647c98f52e2d76113d44de6b771ec87a934f (patch) | |
| tree | 4b9407b00ad0b5baf5ee6245a4157a07062680b5 /arch/ia64/kernel/fsys.S | |
| parent | Pull fsys_gettimeofday into release branch (diff) | |
| parent | [IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting) (diff) | |
| download | linux-14d0647c98f52e2d76113d44de6b771ec87a934f.tar.xz linux-14d0647c98f52e2d76113d44de6b771ec87a934f.zip | |
Pull virt-cpu-accounting into release branch
Diffstat (limited to 'arch/ia64/kernel/fsys.S')
| -rw-r--r-- | arch/ia64/kernel/fsys.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S index 6a72db7ddecc..357b7e2adc63 100644 --- a/arch/ia64/kernel/fsys.S +++ b/arch/ia64/kernel/fsys.S @@ -656,7 +656,11 @@ GLOBAL_ENTRY(fsys_bubble_down) nop.i 0 ;; mov ar.rsc=0 // M2 set enforced lazy mode, pl 0, LE, loadrs=0 +#ifdef CONFIG_VIRT_CPU_ACCOUNTING + mov.m r30=ar.itc // M get cycle for accounting +#else nop.m 0 +#endif nop.i 0 ;; mov r23=ar.bspstore // M2 (12 cyc) save ar.bspstore @@ -678,6 +682,28 @@ GLOBAL_ENTRY(fsys_bubble_down) cmp.ne pKStk,pUStk=r0,r0 // A set pKStk <- 0, pUStk <- 1 br.call.sptk.many b7=ia64_syscall_setup // B ;; +#ifdef CONFIG_VIRT_CPU_ACCOUNTING + // mov.m r30=ar.itc is called in advance + add r16=TI_AC_STAMP+IA64_TASK_SIZE,r2 + add r17=TI_AC_LEAVE+IA64_TASK_SIZE,r2 + ;; + ld8 r18=[r16],TI_AC_STIME-TI_AC_STAMP // time at last check in kernel + ld8 r19=[r17],TI_AC_UTIME-TI_AC_LEAVE // time at leave kernel + ;; + ld8 r20=[r16],TI_AC_STAMP-TI_AC_STIME // cumulated stime + ld8 r21=[r17] // cumulated utime + sub r22=r19,r18 // stime before leave kernel + ;; + st8 [r16]=r30,TI_AC_STIME-TI_AC_STAMP // update stamp + sub r18=r30,r19 // elapsed time in user mode + ;; + add r20=r20,r22 // sum stime + add r21=r21,r18 // sum utime + ;; + st8 [r16]=r20 // update stime + st8 [r17]=r21 // update utime + ;; +#endif mov ar.rsc=0x3 // M2 set eager mode, pl 0, LE, loadrs=0 mov rp=r14 // I0 set the real return addr and r3=_TIF_SYSCALL_TRACEAUDIT,r3 // A |