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>

diff --git a/Documentation/perf_counter/builtin-top.c b/Documentation/perf_counter/builtin-top.c
index b1549dd..814b2e4 100644 (file)
--- 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) {