Add user PM control interface

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index 100749a9ab..18d2f5f4d1 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -1161,4 +1161,46 @@ int xc_pm_reset_cxstat(int xc_handle, int cpuid);
 
 int xc_cpu_online(int xc_handle, int cpu);
 int xc_cpu_offline(int xc_handle, int cpu);
+
+/* 
+ * cpufreq para name of this structure named 
+ * same as sysfs file name of native linux
+ */
+typedef xen_userspace_t xc_userspace_t;
+typedef xen_ondemand_t xc_ondemand_t;
+
+struct xc_get_cpufreq_para {
+    /* IN/OUT variable */
+    uint32_t cpu_num;
+    uint32_t freq_num;
+    uint32_t gov_num;
+
+    /* for all governors */
+    /* OUT variable */
+    uint32_t *affected_cpus;
+    uint32_t *scaling_available_frequencies;
+    char     *scaling_available_governors;
+    char scaling_driver[CPUFREQ_NAME_LEN];
+
+    uint32_t cpuinfo_cur_freq;
+    uint32_t cpuinfo_max_freq;
+    uint32_t cpuinfo_min_freq;
+    uint32_t scaling_cur_freq;
+
+    char scaling_governor[CPUFREQ_NAME_LEN];
+    uint32_t scaling_max_freq;
+    uint32_t scaling_min_freq;
+
+    /* for specific governor */
+    union {
+        xc_userspace_t userspace;
+        xc_ondemand_t ondemand;
+    } u;
+};
+
+int xc_get_cpufreq_para(int xc_handle, int cpuid,
+                        struct xc_get_cpufreq_para *user_para);
+int xc_set_cpufreq_gov(int xc_handle, int cpuid, char *govname);
+int xc_set_cpufreq_para(int xc_handle, int cpuid,
+                        int ctrl_type, int ctrl_value);
 #endif /* XENCTRL_H */