Update 2 points of cpufreq
1. change bool to int type so that compatible with some old linux .h file;
2. set a short path for get_measured_perf() for the sake of performance because it lies in key path, called frequently.

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

diff -r 810a4d43aaa1 tools/libxc/xc_pm.c
--- a/tools/libxc/xc_pm.c	Thu Dec 11 13:22:27 2008 +0800
+++ b/tools/libxc/xc_pm.c	Thu Dec 11 14:22:50 2008 +0800
@@ -24,8 +24,6 @@
  */
 
 #include <errno.h>
-#include <curses.h>
-
 #include "xc_private.h"
 
 /*
@@ -186,9 +184,9 @@ int xc_get_cpufreq_para(int xc_handle, i
     DECLARE_SYSCTL;
     int ret = 0;
     struct xen_get_cpufreq_para *sys_para = &sysctl.u.pm_op.get_para;
-    bool has_num = user_para->cpu_num &&
-                     user_para->freq_num &&
-                     user_para->gov_num;
+    int has_num = user_para->cpu_num &&
+                  user_para->freq_num &&
+                  user_para->gov_num;
 
     if ( (xc_handle < 0) || !user_para )
         return -EINVAL;
diff -r 810a4d43aaa1 xen/arch/x86/acpi/cpufreq/cpufreq.c
--- a/xen/arch/x86/acpi/cpufreq/cpufreq.c	Thu Dec 11 13:22:27 2008 +0800
+++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c	Thu Dec 11 14:22:50 2008 +0800
@@ -270,16 +270,27 @@ static void  __get_measured_perf(void *p
 
 static unsigned int get_measured_perf(unsigned int cpu)
 {
+    struct cpufreq_policy *policy;
     unsigned int retval, perf_percent;
     cpumask_t cpumask;
 
     if (!cpu_online(cpu))
         return 0;
 
-    cpumask = cpumask_of_cpu(cpu);
-    on_selected_cpus(cpumask, __get_measured_perf, (void *)&perf_percent,0,1);
+    policy = cpufreq_cpu_policy[cpu];
+    if (!policy)
+        return 0;
 
-    retval = drv_data[cpu]->max_freq * perf_percent / 100;
+    /* usually we go short path without IPI for the sake of performance */
+    if (cpu == smp_processor_id())
+        __get_measured_perf((void *)&perf_percent);
+    else {
+        cpumask = cpumask_of_cpu(cpu);
+        on_selected_cpus(cpumask, __get_measured_perf, 
+                        (void *)&perf_percent,0,1);
+    }
+
+    retval = drv_data[policy->cpu]->max_freq * perf_percent / 100;
     return retval;
 }