libxc: simplify performance counters API

Current function has heavily overloaded semantics for the various
arguments. Separate out into more specific functions.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/tools/misc/xenperf.c b/tools/misc/xenperf.c
index 3730efdbb7..583abc1f82 100644
--- a/tools/misc/xenperf.c
+++ b/tools/misc/xenperf.c
@@ -137,8 +137,7 @@ int main(int argc, char *argv[])
     
     if ( reset )
     {
-        if ( xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_reset,
-                              NULL, NULL, NULL, NULL) != 0 )
+        if ( xc_perfc_reset(xc_handle) != 0 )
         {
             fprintf(stderr, "Error reseting performance counters: %d (%s)\n",
                     errno, strerror(errno));
@@ -148,8 +147,7 @@ int main(int argc, char *argv[])
         return 0;
     }
 
-    if ( xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_query,
-                          NULL, NULL, &num_desc, &num_val) != 0 )
+    if ( xc_perfc_query_number(xc_handle, &num_desc, &num_val) != 0 )
     {
         fprintf(stderr, "Error getting number of perf counters: %d (%s)\n",
                 errno, strerror(errno));
@@ -169,8 +167,7 @@ int main(int argc, char *argv[])
         exit(-1);
     }
 
-    if ( xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_query,
-                          pcd, pcv, NULL, NULL) != 0 )
+    if ( xc_perfc_query(xc_handle, pcd, pcv) != 0 )
     {
         fprintf(stderr, "Error getting perf counter: %d (%s)\n",
                 errno, strerror(errno));