|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] [retry 2] 3/3 Add support for AMD MPERF/APERF
This is patch 1/3 again, not patch 3/3. I would also like an Ack from Yu Ke
for patches 1/3 and 3/3 (when you resend it).
Thanks,
Keir
On 31/03/2010 01:58, "Mark Langsdorf" <mark.langsdorf@xxxxxxx> wrote:
> # HG changeset patch
> # User mark.langsdorf@xxxxxxx
> # Date 1270010993 18000
> # Node ID 9da598418e6da7758a799e116dc8bf3c3ed2f473
> # Parent ebd84be3420a4453b3024d3378d8d84b81f44118
> Refactor the existing code that supports the Intel Turbo feature to
> move all the driver specific bits in the cpufreq driver. Create
> a tri-state interface for the Turbo feature that can distinguish
> amongst enabled Turbo, disabled Turbo, and processors that don't
> support Turbo at all.
>
> Signed-off-by: Mark Langsdorf <mark.langsdorf@xxxxxxx>
>
> diff -r ebd84be3420a -r 9da598418e6d tools/libxc/xc_pm.c
> --- a/tools/libxc/xc_pm.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/tools/libxc/xc_pm.c Tue Mar 30 23:49:53 2010 -0500
> @@ -247,6 +247,7 @@
> user_para->scaling_cur_freq = sys_para->scaling_cur_freq;
> user_para->scaling_max_freq = sys_para->scaling_max_freq;
> user_para->scaling_min_freq = sys_para->scaling_min_freq;
> + user_para->turbo_enabled = sys_para->turbo_enabled;
>
> memcpy(user_para->scaling_driver,
> sys_para->scaling_driver, CPUFREQ_NAME_LEN);
> diff -r ebd84be3420a -r 9da598418e6d tools/libxc/xenctrl.h
> --- a/tools/libxc/xenctrl.h Tue Mar 30 18:31:39 2010 +0100
> +++ b/tools/libxc/xenctrl.h Tue Mar 30 23:49:53 2010 -0500
> @@ -1276,6 +1276,7 @@
> char scaling_governor[CPUFREQ_NAME_LEN];
> uint32_t scaling_max_freq;
> uint32_t scaling_min_freq;
> + int32_t turbo_enabled;
>
> /* for specific governor */
> union {
> diff -r ebd84be3420a -r 9da598418e6d tools/misc/xenpm.c
> --- a/tools/misc/xenpm.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/tools/misc/xenpm.c Tue Mar 30 23:49:53 2010 -0500
> @@ -30,6 +30,10 @@
>
> #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
>
> +#define CPUFREQ_TURBO_DISABLED -1
> +#define CPUFREQ_TURBO_UNSUPPORTED 0
> +#define CPUFREQ_TURBO_ENABLED 1
> +
> static int xc_fd;
> static int max_cpu_nr;
>
> @@ -62,8 +66,8 @@
> " set-max-cstate <num> set the C-State limitation
> (<num> >= 0)\n"
> " start [seconds] start collect Cx/Px
> statistics,\n"
> " output after CTRL-C or
> SIGINT or several seconds.\n"
> - " enable-turbo-mode [cpuid] enable Turbo Mode in DBS
> governor.\n"
> - " disable-turbo-mode [cpuid] disable Turbo Mode in DBS
> governor.\n"
> + " enable-turbo-mode [cpuid] enable Turbo Mode for
> processors that support it.\n"
> + " disable-turbo-mode [cpuid] disable Turbo Mode for
> processors that support it.\n"
> );
> }
> /* wrapper function */
> @@ -529,8 +533,6 @@
> p_cpufreq->u.ondemand.sampling_rate);
> printf(" up_threshold : %u\n",
> p_cpufreq->u.ondemand.up_threshold);
> - printf(" turbo mode : %s\n",
> - p_cpufreq->u.ondemand.turbo_enabled ? "enabled" : "disabled");
> }
>
> printf("scaling_avail_freq :");
> @@ -546,6 +548,13 @@
> p_cpufreq->scaling_max_freq,
> p_cpufreq->scaling_min_freq,
> p_cpufreq->scaling_cur_freq);
> + if (p_cpufreq->turbo_enabled != CPUFREQ_TURBO_UNSUPPORTED) {
> + printf("turbo mode : ");
> + if (p_cpufreq->turbo_enabled == CPUFREQ_TURBO_ENABLED)
> + printf("enabled\n");
> + else
> + printf("disabled\n");
> + }
> printf("\n");
> }
>
> @@ -561,6 +570,7 @@
> p_cpufreq->affected_cpus = NULL;
> p_cpufreq->scaling_available_frequencies = NULL;
> p_cpufreq->scaling_available_governors = NULL;
> + p_cpufreq->turbo_enabled = 0;
>
> do
> {
> diff -r ebd84be3420a -r 9da598418e6d xen/arch/x86/acpi/cpufreq/cpufreq.c
> --- a/xen/arch/x86/acpi/cpufreq/cpufreq.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c Tue Mar 30 23:49:53 2010 -0500
> @@ -410,6 +410,10 @@
> return -ENODEV;
> }
>
> + if (policy->turbo == -1)
> + if (target_freq > policy->cpuinfo.second_max_freq)
> + target_freq = policy->cpuinfo.second_max_freq;
> +
> perf = data->acpi_data;
> result = cpufreq_frequency_table_target(policy,
> data->freq_table,
> @@ -610,12 +614,19 @@
> break;
> }
>
> - /* Check for APERF/MPERF support in hardware */
> + /* Check for APERF/MPERF support in hardware
> + * also check for boost support */
> if (c->x86_vendor == X86_VENDOR_INTEL && c->cpuid_level >= 6) {
> unsigned int ecx;
> + unsigned int eax;
> ecx = cpuid_ecx(6);
> if (ecx & CPUID_6_ECX_APERFMPERF_CAPABILITY)
> acpi_cpufreq_driver.getavg = get_measured_perf;
> + eax = cpuid_eax(6);
> + if ( eax & 0x2 ) {
> + policy->turbo = 1;
> + printk(XENLOG_INFO "Turbo Mode detected and enabled!\n");
> + }
> }
>
> /*
> diff -r ebd84be3420a -r 9da598418e6d xen/drivers/acpi/pmstat.c
> --- a/xen/drivers/acpi/pmstat.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/drivers/acpi/pmstat.c Tue Mar 30 23:49:53 2010 -0500
> @@ -299,9 +299,8 @@
> &op->u.get_para.u.ondemand.sampling_rate_min,
> &op->u.get_para.u.ondemand.sampling_rate,
> &op->u.get_para.u.ondemand.up_threshold);
> - op->u.get_para.u.ondemand.turbo_enabled =
> - cpufreq_dbs_get_turbo_status(op->cpuid);
> }
> + op->u.get_para.turbo_enabled = cpufreq_get_turbo_status(op->cpuid);
>
> return ret;
> }
> @@ -553,13 +552,13 @@
>
> case XEN_SYSCTL_pm_op_enable_turbo:
> {
> - cpufreq_dbs_enable_turbo(op->cpuid);
> + cpufreq_enable_turbo(op->cpuid);
> break;
> }
>
> case XEN_SYSCTL_pm_op_disable_turbo:
> {
> - cpufreq_dbs_disable_turbo(op->cpuid);
> + cpufreq_disable_turbo(op->cpuid);
> break;
> }
>
> diff -r ebd84be3420a -r 9da598418e6d xen/drivers/cpufreq/cpufreq_ondemand.c
> --- a/xen/drivers/cpufreq/cpufreq_ondemand.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/drivers/cpufreq/cpufreq_ondemand.c Tue Mar 30 23:49:53 2010 -0500
> @@ -58,9 +58,6 @@
>
> static struct timer dbs_timer[NR_CPUS];
>
> -/* Turbo Mode */
> -static int turbo_detected = 0;
> -
> int write_ondemand_sampling_rate(unsigned int sampling_rate)
> {
> if ( (sampling_rate > MAX_SAMPLING_RATE / MICROSECS(1)) ||
> @@ -111,10 +108,6 @@
>
> policy = this_dbs_info->cur_policy;
> max = policy->max;
> - if (turbo_detected && !this_dbs_info->turbo_enabled) {
> - if (max > policy->cpuinfo.second_max_freq)
> - max = policy->cpuinfo.second_max_freq;
> - }
>
> if (unlikely(policy->resume)) {
> __cpufreq_driver_target(policy, max,CPUFREQ_RELATION_H);
> @@ -276,7 +269,6 @@
> } else
> dbs_tuners_ins.sampling_rate = usr_sampling_rate;
> }
> - this_dbs_info->turbo_enabled = 1;
> dbs_timer_init(this_dbs_info);
>
> break;
> @@ -353,13 +345,6 @@
>
> static int __init cpufreq_gov_dbs_init(void)
> {
> -#ifdef CONFIG_X86
> - unsigned int eax = cpuid_eax(6);
> - if ( eax & 0x2 ) {
> - turbo_detected = 1;
> - printk(XENLOG_INFO "Turbo Mode detected!\n");
> - }
> -#endif
> return cpufreq_register_governor(&cpufreq_gov_dbs);
> }
> __initcall(cpufreq_gov_dbs_init);
> @@ -404,19 +389,3 @@
> }
> }
> }
> -
> -void cpufreq_dbs_enable_turbo(int cpuid)
> -{
> - per_cpu(cpu_dbs_info, cpuid).turbo_enabled = 1;
> -}
> -
> -void cpufreq_dbs_disable_turbo(int cpuid)
> -{
> - per_cpu(cpu_dbs_info, cpuid).turbo_enabled = 0;
> -}
> -
> -unsigned int cpufreq_dbs_get_turbo_status(int cpuid)
> -{
> - return turbo_detected && per_cpu(cpu_dbs_info, cpuid).turbo_enabled;
> -}
> -
> diff -r ebd84be3420a -r 9da598418e6d xen/drivers/cpufreq/utility.c
> --- a/xen/drivers/cpufreq/utility.c Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/drivers/cpufreq/utility.c Tue Mar 30 23:49:53 2010 -0500
> @@ -394,6 +394,31 @@
> return policy->cur;
> }
>
> +void cpufreq_enable_turbo(int cpuid)
> +{
> + struct cpufreq_policy *policy;
> +
> + policy = cpufreq_cpu_policy[cpuid];
> + if (policy->turbo != CPUFREQ_TURBO_UNSUPPORTED)
> + policy->turbo = CPUFREQ_TURBO_ENABLED;
> +}
> +
> +void cpufreq_disable_turbo(int cpuid)
> +{
> + struct cpufreq_policy *policy;
> +
> + policy = cpufreq_cpu_policy[cpuid];
> + if (policy->turbo != CPUFREQ_TURBO_UNSUPPORTED)
> + policy->turbo = CPUFREQ_TURBO_DISABLED;
> +}
> +
> +int cpufreq_get_turbo_status(int cpuid)
> +{
> + struct cpufreq_policy *policy;
> +
> + policy = cpufreq_cpu_policy[cpuid];
> + return policy->turbo;
> +}
>
> /*********************************************************************
> * POLICY *
> diff -r ebd84be3420a -r 9da598418e6d xen/include/acpi/cpufreq/cpufreq.h
> --- a/xen/include/acpi/cpufreq/cpufreq.h Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/include/acpi/cpufreq/cpufreq.h Tue Mar 30 23:49:53 2010 -0500
> @@ -55,6 +55,9 @@
>
> unsigned int resume; /* flag for cpufreq 1st run
> * S3 wakeup, hotplug cpu, etc */
> + int turbo; /* tristate flag: 0 for unsupported
> + * -1 for disable, 1 for enabled
> + * See CPUFREQ_TURBO_* below for defines */
> };
> extern struct cpufreq_policy *cpufreq_cpu_policy[NR_CPUS];
>
> @@ -114,6 +117,15 @@
> #define USR_GETAVG 2
> extern int cpufreq_driver_getavg(unsigned int cpu, unsigned int flag);
>
> +#define CPUFREQ_TURBO_DISABLED -1
> +#define CPUFREQ_TURBO_UNSUPPORTED 0
> +#define CPUFREQ_TURBO_ENABLED 1
> +
> +extern void cpufreq_enable_turbo(int cpuid);
> +extern void cpufreq_disable_turbo(int cpuid);
> +extern int cpufreq_get_turbo_status(int cpuid);
> +
> +
> static __inline__ int
> __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event)
> {
> @@ -241,7 +253,4 @@
> void cpufreq_dbs_timer_suspend(void);
> void cpufreq_dbs_timer_resume(void);
>
> -void cpufreq_dbs_enable_turbo(int cpuid);
> -void cpufreq_dbs_disable_turbo(int cpuid);
> -unsigned int cpufreq_dbs_get_turbo_status(int cpuid);
> #endif /* __XEN_CPUFREQ_PM_H__ */
> diff -r ebd84be3420a -r 9da598418e6d xen/include/acpi/cpufreq/processor_perf.h
> --- a/xen/include/acpi/cpufreq/processor_perf.h Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/include/acpi/cpufreq/processor_perf.h Tue Mar 30 23:49:53 2010 -0500
> @@ -9,6 +9,7 @@
> int get_cpu_id(u8);
> int powernow_cpufreq_init(void);
> unsigned int powernow_register_driver(void);
> +unsigned int get_measured_perf(unsigned int cpu, unsigned int flag);
>
> void cpufreq_residency_update(unsigned int, uint8_t);
> void cpufreq_statistic_update(unsigned int, uint8_t, uint8_t);
> diff -r ebd84be3420a -r 9da598418e6d xen/include/public/sysctl.h
> --- a/xen/include/public/sysctl.h Tue Mar 30 18:31:39 2010 +0100
> +++ b/xen/include/public/sysctl.h Tue Mar 30 23:49:53 2010 -0500
> @@ -298,7 +298,6 @@
>
> uint32_t sampling_rate;
> uint32_t up_threshold;
> - uint32_t turbo_enabled;
> };
> typedef struct xen_ondemand xen_ondemand_t;
>
> @@ -328,6 +327,7 @@
> char scaling_governor[CPUFREQ_NAME_LEN];
> uint32_t scaling_max_freq;
> uint32_t scaling_min_freq;
> + int32_t turbo_enabled;
>
> /* for specific governor */
> union {
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |