58 lines
2.1 KiB
Plaintext
58 lines
2.1 KiB
Plaintext
From: jbeulich@novell.com
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Subject: make /proc/cpuinfo track CPU speed
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Patch-mainline: obsolete
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--- head-2010-03-15.orig/arch/x86/kernel/acpi/processor_extcntl_xen.c 2010-03-16 10:37:21.000000000 +0100
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+++ head-2010-03-15/arch/x86/kernel/acpi/processor_extcntl_xen.c 2010-03-16 10:42:20.000000000 +0100
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@@ -206,3 +206,14 @@ void arch_acpi_processor_init_extcntl(co
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*ops = &xen_extcntl_ops;
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}
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EXPORT_SYMBOL(arch_acpi_processor_init_extcntl);
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+
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+unsigned int cpufreq_quick_get(unsigned int cpu)
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+{
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+ xen_platform_op_t op = {
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+ .cmd = XENPF_get_cpu_freq,
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+ .interface_version = XENPF_INTERFACE_VERSION,
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+ .u.get_cpu_freq.vcpu = cpu
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+ };
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+
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+ return HYPERVISOR_platform_op(&op) == 0 ? op.u.get_cpu_freq.freq : 0;
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+}
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--- head-2010-03-15.orig/include/linux/cpufreq.h 2010-03-16 10:34:57.000000000 +0100
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+++ head-2010-03-15/include/linux/cpufreq.h 2010-01-25 13:46:23.000000000 +0100
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@@ -303,7 +303,7 @@ static inline unsigned int cpufreq_get(u
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#endif
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/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
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-#ifdef CONFIG_CPU_FREQ
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+#if defined(CONFIG_CPU_FREQ) || defined(CONFIG_PROCESSOR_EXTERNAL_CONTROL)
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unsigned int cpufreq_quick_get(unsigned int cpu);
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#else
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static inline unsigned int cpufreq_quick_get(unsigned int cpu)
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--- head-2010-03-15.orig/include/xen/interface/platform.h 2010-01-04 11:56:34.000000000 +0100
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+++ head-2010-03-15/include/xen/interface/platform.h 2010-01-25 13:46:23.000000000 +0100
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@@ -355,6 +355,14 @@ struct xenpf_mem_hotadd
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uint32_t flags;
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};
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+#define XENPF_get_cpu_freq ('N' << 24)
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+struct xenpf_get_cpu_freq {
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+ /* IN variables */
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+ uint32_t vcpu;
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+ /* OUT variables */
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+ uint32_t freq; /* in kHz */
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+};
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+
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struct xen_platform_op {
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uint32_t cmd;
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uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
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@@ -374,6 +382,7 @@ struct xen_platform_op {
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struct xenpf_cpu_ol cpu_ol;
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struct xenpf_cpu_hotadd cpu_add;
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struct xenpf_mem_hotadd mem_add;
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+ struct xenpf_get_cpu_freq get_cpu_freq;
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uint8_t pad[128];
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} u;
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};
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