perf top: update to use the new freq interface

Provide perf top -F as alternative to -c.

[ Impact: new 'perf top' feature ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20090515132018.707922166@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 1 deletions

diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c
index b1549dd27720..814b2e4925e3 100644
--- a/Documentation/perf_counter/builtin-top.c
+++ b/Documentation/perf_counter/builtin-top.c
@@ -98,6 +98,7 @@ static unsigned int		page_size;
 static unsigned int             mmap_pages                      =  16;
 static int                      use_mmap                        = 0;
 static int                      use_munmap                      = 0;
+static int                      freq                            = 0;
 
 static char                     *vmlinux;
 
@@ -846,9 +847,10 @@ static void process_options(int argc, char **argv)
                         {"stat",        no_argument,            NULL, 'S'},
                         {"vmlinux",     required_argument,      NULL, 'x'},
                         {"zero",        no_argument,            NULL, 'z'},
+                        {"freq",        required_argument,      NULL, 'F'},
                         {NULL,          0,                      NULL,  0 }
                 };
-                int c = getopt_long(argc, argv, "+:ac:C:d:De:f:g:hln:m:p:r:s:Sx:zMU",
+                int c = getopt_long(argc, argv, "+:ac:C:d:De:f:g:hln:m:p:r:s:Sx:zMUF:",
                                     long_options, &option_index);
                 if (c == -1)
                         break;
@@ -889,6 +891,7 @@ static void process_options(int argc, char **argv)
                 case 'm': mmap_pages                    =   atoi(optarg); break;
                 case 'M': use_mmap                      =              1; break;
                 case 'U': use_munmap                    =              1; break;
+                case 'F': freq = 1; default_interval    =   atoi(optarg); break;
                 default: error = 1; break;
                 }
         }
@@ -1075,6 +1078,7 @@ int cmd_top(int argc, char **argv, const char *prefix)
                         hw_event.nmi            = nmi;
                         hw_event.mmap           = use_mmap;
                         hw_event.munmap         = use_munmap;
+                        hw_event.freq           = freq;
 
                         fd[i][counter] = sys_perf_counter_open(&hw_event, tid, cpu, group_fd, 0);
                         if (fd[i][counter] < 0) {