src/patches/60050_xen-cpufreq-report.patch1

   1 From: jbeulich@novell.com
   2 Subject: make /proc/cpuinfo track CPU speed
   3 Patch-mainline: obsolete
   4
   5 Index: head-2008-10-01/arch/x86/kernel/acpi/processor_extcntl_xen.c
   6 ===================================================================
   7 --- head-2008-10-01.orig/arch/x86/kernel/acpi/processor_extcntl_xen.c   2008-10-01 15:43:24.000000000 +0200
   8 +++ head-2008-10-01/arch/x86/kernel/acpi/processor_extcntl_xen.c        2008-10-01 16:44:34.000000000 +0200
   9 @@ -207,3 +207,14 @@ void arch_acpi_processor_init_extcntl(co
  10         *ops = &xen_extcntl_ops;
  11  }
  12  EXPORT_SYMBOL(arch_acpi_processor_init_extcntl);
  13 +
  14 +unsigned int cpufreq_quick_get(unsigned int cpu)
  15 +{
  16 +       xen_platform_op_t op = {
  17 +               .cmd                    = XENPF_get_cpu_freq,
  18 +               .interface_version      = XENPF_INTERFACE_VERSION,
  19 +               .u.get_cpu_freq.vcpu    = cpu
  20 +       };
  21 +
  22 +       return HYPERVISOR_platform_op(&op) == 0 ? op.u.get_cpu_freq.freq : 0;
  23 +}
  24 Index: head-2008-10-01/include/linux/cpufreq.h
  25 ===================================================================
  26 --- head-2008-10-01.orig/include/linux/cpufreq.h        2008-10-01 14:44:59.000000000 +0200
  27 +++ head-2008-10-01/include/linux/cpufreq.h     2008-10-01 16:44:34.000000000 +0200
  28 @@ -282,7 +282,7 @@ int cpufreq_update_policy(unsigned int c
  29  unsigned int cpufreq_get(unsigned int cpu);
  30
  31  /* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
  32 -#ifdef CONFIG_CPU_FREQ
  33 +#if defined(CONFIG_CPU_FREQ) || defined(CONFIG_PROCESSOR_EXTERNAL_CONTROL)
  34  unsigned int cpufreq_quick_get(unsigned int cpu);
  35  #else
  36  static inline unsigned int cpufreq_quick_get(unsigned int cpu)
  37 Index: head-2008-10-01/include/xen/interface/platform.h
  38 ===================================================================
  39 --- head-2008-10-01.orig/include/xen/interface/platform.h       2008-09-25 13:55:33.000000000 +0200
  40 +++ head-2008-10-01/include/xen/interface/platform.h    2008-10-01 16:44:34.000000000 +0200
  41 @@ -312,6 +312,16 @@ struct xenpf_set_processor_pminfo {
  42  typedef struct xenpf_set_processor_pminfo xenpf_set_processor_pminfo_t;
  43  DEFINE_XEN_GUEST_HANDLE(xenpf_set_processor_pminfo_t);
  44
  45 +#define XENPF_get_cpu_freq        ('N' << 24)
  46 +struct xenpf_get_cpu_freq {
  47 +    /* IN variables */
  48 +    uint32_t vcpu;
  49 +    /* OUT variables */
  50 +    uint32_t freq; /* in kHz */
  51 +};
  52 +typedef struct xenpf_get_cpu_freq xenpf_get_cpu_freq_t;
  53 +DEFINE_XEN_GUEST_HANDLE(xenpf_get_cpu_freq_t);
  54 +
  55  struct xen_platform_op {
  56      uint32_t cmd;
  57      uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
  58 @@ -327,6 +337,7 @@ struct xen_platform_op {
  59          struct xenpf_change_freq       change_freq;
  60          struct xenpf_getidletime       getidletime;
  61          struct xenpf_set_processor_pminfo set_pminfo;
  62 +        struct xenpf_get_cpu_freq      get_cpu_freq;
  63          uint8_t                        pad[128];
  64      } u;
  65  };