bitkeeper revision 1.1159.187.48 (41adc6420WlNaaoUkvfgNxl44rpYYg)

Export Xen s/w perfctrs to DOM0 via new 'xenperf' utility.

1 files changed, 104 insertions, 0 deletions

diff --git a/tools/misc/xenperf.c b/tools/misc/xenperf.c
new file mode 100644
index 0000000000..d2846224b1
--- /dev/null
+++ b/tools/misc/xenperf.c
@@ -0,0 +1,104 @@
+/* -*-  Mode:C; c-basic-offset:4; tab-width:4 -*-
+ ****************************************************************************
+ * (C) 2004 - Rolf Neugebauer - Intel Research Cambridge
+ ****************************************************************************
+ *
+ *        File: xenperf.c
+ *      Author: Rolf Neugebauer (rolf.neugebauer@intel.com)
+ *        Date: Nov 2004
+ * 
+ * Description: 
+ */
+
+
+#include <xc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+    int              i, j, xc_handle;
+    xc_perfc_desc_t *pcd;
+    unsigned int     num, sum, reset = 0;
+
+    if ( argc > 1 )
+    {
+        char *p = argv[1];
+        if ( (*p++ == '-')  && (*p == 'r') )
+            reset = 1;
+        else
+        {
+            printf("%s: [-r]\n", argv[0]);
+            printf("no args: print xen performance counters\n");
+            printf("    -r : reset xen performance counters\n");
+            return 0;
+        }
+    }   
+
+    if ( (xc_handle = xc_interface_open()) == -1 )
+    {
+        fprintf(stderr, "Error opening xc interface: %d (%s)\n",
+                errno, strerror(errno));
+        return 1;
+    }
+    
+    if ( reset )
+    {
+        if ( xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_RESET,
+                              NULL) < 0 )
+        {
+            fprintf(stderr, "Error reseting performance counters: %d (%s)\n",
+                    errno, strerror(errno));
+            return 1;
+        }
+
+        return 0;
+    }
+
+
+    if ( (num = xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_QUERY,
+                                 NULL)) < 0 )
+    {
+        fprintf(stderr, "Error getting number of perf counters: %d (%s)\n",
+                errno, strerror(errno));
+        return 1;
+    }
+
+    pcd = malloc(sizeof(*pcd) * num);
+
+    if ( mlock(pcd, sizeof(*pcd) * num) != 0 )
+    {
+        fprintf(stderr, "Could not mlock descriptor buffer: %d (%s)\n",
+                errno, strerror(errno));
+        exit(-1);
+    }
+
+    if ( xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_QUERY, pcd) <= 0 )
+    {
+        fprintf(stderr, "Error getting perf counter description: %d (%s)\n",
+                errno, strerror(errno));
+        return 1;
+    }
+
+    munlock(pcd, sizeof(*pcd) * num);
+
+    for ( i = 0; i < num; i++ )
+    {
+        printf ("%-35s ", pcd[i].name);
+        
+        sum = 0;
+        for ( j = 0; j < pcd[i].nr_vals; j++ )
+            sum += pcd[i].vals[j];
+        printf ("T=%10u ", (unsigned int)sum);
+
+        for ( j = 0; j < pcd[i].nr_vals; j++ )
+            printf(" %10u", (unsigned int)pcd[i].vals[j]);
+
+        printf("\n");
+    }
+
+    return 0;
+}