[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] x86: Px statistic update for cpu idle time.
# HG changeset patch # User Keir Fraser <keir.fraser@xxxxxxxxxx> # Date 1214816379 -3600 # Node ID 0b4dbd9a9896980c8a298b0e289f75b8d8d93e1a # Parent 469d9b00382db46fbeed3e092335c3fb168c402e x86: Px statistic update for cpu idle time. Update px statistic, subtract cx idle time from px residency time. Signed-off-by: Liu Jinsong <jinsong.liu@xxxxxxxxx> --- xen/arch/x86/acpi/cpufreq/cpufreq_ondemand.c | 2 +- xen/arch/x86/acpi/cpufreq/utility.c | 17 +++++++++++++++++ xen/arch/x86/acpi/pmstat.c | 7 +++++++ xen/include/acpi/cpufreq/processor_perf.h | 5 +++++ 4 files changed, 30 insertions(+), 1 deletion(-) diff -r 469d9b00382d -r 0b4dbd9a9896 xen/arch/x86/acpi/cpufreq/cpufreq_ondemand.c --- a/xen/arch/x86/acpi/cpufreq/cpufreq_ondemand.c Mon Jun 30 09:57:27 2008 +0100 +++ b/xen/arch/x86/acpi/cpufreq/cpufreq_ondemand.c Mon Jun 30 09:59:39 2008 +0100 @@ -52,7 +52,7 @@ static struct dbs_tuners { static struct timer dbs_timer[NR_CPUS]; -static inline uint64_t get_cpu_idle_time(unsigned int cpu) +inline uint64_t get_cpu_idle_time(unsigned int cpu) { uint64_t idle_ns; struct vcpu *v; diff -r 469d9b00382d -r 0b4dbd9a9896 xen/arch/x86/acpi/cpufreq/utility.c --- a/xen/arch/x86/acpi/cpufreq/utility.c Mon Jun 30 09:57:27 2008 +0100 +++ b/xen/arch/x86/acpi/cpufreq/utility.c Mon Jun 30 09:59:39 2008 +0100 @@ -46,8 +46,15 @@ void px_statistic_suspend(void) for_each_online_cpu(cpu) { struct pm_px *pxpt = &px_statistic_data[cpu]; + uint64_t total_idle_ns; + uint64_t tmp_idle_ns; + + total_idle_ns = get_cpu_idle_time(cpu); + tmp_idle_ns = total_idle_ns - pxpt->prev_idle_wall; + pxpt->u.pt[pxpt->u.cur].residency += now - pxpt->prev_state_wall; + pxpt->u.pt[pxpt->u.cur].residency -= tmp_idle_ns; } } @@ -61,6 +68,7 @@ void px_statistic_resume(void) for_each_online_cpu(cpu) { struct pm_px *pxpt = &px_statistic_data[cpu]; pxpt->prev_state_wall = now; + pxpt->prev_idle_wall = get_cpu_idle_time(cpu); } } @@ -74,15 +82,22 @@ void px_statistic_update(cpumask_t cpuma for_each_cpu_mask(i, cpumask) { struct pm_px *pxpt = &px_statistic_data[i]; uint32_t statnum = processor_pminfo[i].perf.state_count; + uint64_t total_idle_ns; + uint64_t tmp_idle_ns; + + total_idle_ns = get_cpu_idle_time(i); + tmp_idle_ns = total_idle_ns - pxpt->prev_idle_wall; pxpt->u.last = from; pxpt->u.cur = to; pxpt->u.pt[to].count++; pxpt->u.pt[from].residency += now - pxpt->prev_state_wall; + pxpt->u.pt[from].residency -= tmp_idle_ns; (*(pxpt->u.trans_pt + from*statnum + to))++; pxpt->prev_state_wall = now; + pxpt->prev_idle_wall = total_idle_ns; } } @@ -114,6 +129,7 @@ int px_statistic_init(int cpuid) pxpt->u.pt[i].freq = pmpt->perf.states[i].core_frequency; pxpt->prev_state_wall = NOW(); + pxpt->prev_idle_wall = get_cpu_idle_time(cpuid); return 0; } @@ -134,6 +150,7 @@ void px_statistic_reset(int cpuid) } pxpt->prev_state_wall = NOW(); + pxpt->prev_idle_wall = get_cpu_idle_time(cpuid); } diff -r 469d9b00382d -r 0b4dbd9a9896 xen/arch/x86/acpi/pmstat.c --- a/xen/arch/x86/acpi/pmstat.c Mon Jun 30 09:57:27 2008 +0100 +++ b/xen/arch/x86/acpi/pmstat.c Mon Jun 30 09:59:39 2008 +0100 @@ -71,11 +71,18 @@ int do_get_pm_info(struct xen_sysctl_get case PMSTAT_get_pxstat: { uint64_t now, ct; + uint64_t total_idle_ns; + uint64_t tmp_idle_ns; + + total_idle_ns = get_cpu_idle_time(op->cpuid); + tmp_idle_ns = total_idle_ns - pxpt->prev_idle_wall; now = NOW(); pxpt->u.usable = pmpt->perf.state_count - pmpt->perf.ppc; pxpt->u.pt[pxpt->u.cur].residency += now - pxpt->prev_state_wall; + pxpt->u.pt[pxpt->u.cur].residency -= tmp_idle_ns; pxpt->prev_state_wall = now; + pxpt->prev_idle_wall = total_idle_ns; ct = pmpt->perf.state_count; if ( copy_to_guest(op->u.getpx.trans_pt, pxpt->u.trans_pt, ct*ct) ) diff -r 469d9b00382d -r 0b4dbd9a9896 xen/include/acpi/cpufreq/processor_perf.h --- a/xen/include/acpi/cpufreq/processor_perf.h Mon Jun 30 09:57:27 2008 +0100 +++ b/xen/include/acpi/cpufreq/processor_perf.h Mon Jun 30 09:59:39 2008 +0100 @@ -7,16 +7,20 @@ int get_cpu_id(u8); int get_cpu_id(u8); int acpi_cpufreq_init(void); int powernow_cpufreq_init(void); + void px_statistic_update(cpumask_t, uint8_t, uint8_t); int px_statistic_init(int); void px_statistic_reset(int); void px_statistic_suspend(void); void px_statistic_resume(void); + void cpufreq_dom_exit(void); int cpufreq_dom_init(void); int cpufreq_dom_dbs(unsigned int); void cpufreq_suspend(void); int cpufreq_resume(void); + +inline uint64_t get_cpu_idle_time(unsigned int); struct processor_performance { uint32_t state; @@ -52,6 +56,7 @@ struct pm_px { struct pm_px { struct px_stat u; uint64_t prev_state_wall; + uint64_t prev_idle_wall; }; extern struct pm_px px_statistic_data[NR_CPUS]; _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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