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| author | Takashi Iwai <tiwai@suse.de> | 2015-10-23 04:57:50 (GMT) |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-10-23 04:57:50 (GMT) |
| commit | 274035751e25ee15a064e43cde7b4e7a9b75d921 (patch) | |
| tree | bf5f3f18f14855043324ef02a116532d866e3dac /arch/s390/kernel/entry.S | |
| parent | 53e597b1d194910bef53ed0632da329fef497904 (diff) | |
| parent | a5be88f63eaff1c03774aecd7388015cb87f6b2c (diff) | |
| download | linux-274035751e25ee15a064e43cde7b4e7a9b75d921.tar.xz | |
Merge branch 'topic/hw-constraint-single' into for-next
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 09b039d..582fe44 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -733,6 +733,14 @@ ENTRY(psw_idle) stg %r3,__SF_EMPTY(%r15) larl %r1,.Lpsw_idle_lpsw+4 stg %r1,__SF_EMPTY+8(%r15) +#ifdef CONFIG_SMP + larl %r1,smp_cpu_mtid + llgf %r1,0(%r1) + ltgr %r1,%r1 + jz .Lpsw_idle_stcctm + .insn rsy,0xeb0000000017,%r1,5,__SF_EMPTY+16(%r15) +.Lpsw_idle_stcctm: +#endif STCK __CLOCK_IDLE_ENTER(%r2) stpt __TIMER_IDLE_ENTER(%r2) .Lpsw_idle_lpsw: @@ -1159,7 +1167,27 @@ cleanup_critical: jhe 1f mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2) mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2) -1: # account system time going idle +1: # calculate idle cycles +#ifdef CONFIG_SMP + clg %r9,BASED(.Lcleanup_idle_insn) + jl 3f + larl %r1,smp_cpu_mtid + llgf %r1,0(%r1) + ltgr %r1,%r1 + jz 3f + .insn rsy,0xeb0000000017,%r1,5,__SF_EMPTY+80(%r15) + larl %r3,mt_cycles + ag %r3,__LC_PERCPU_OFFSET + la %r4,__SF_EMPTY+16(%r15) +2: lg %r0,0(%r3) + slg %r0,0(%r4) + alg %r0,64(%r4) + stg %r0,0(%r3) + la %r3,8(%r3) + la %r4,8(%r4) + brct %r1,2b +#endif +3: # account system time going idle lg %r9,__LC_STEAL_TIMER alg %r9,__CLOCK_IDLE_ENTER(%r2) slg %r9,__LC_LAST_UPDATE_CLOCK |