perf-record: Remove -M

Since it is not allowed to create cross-cpu (or
cross-task) buffers, this option is no longer valid.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20100521090710.582740993@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e672269..94e210f 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -61,8 +61,6 @@ static bool                   call_graph                      =  false;
 static bool                    inherit_stat                    =  false;
 static bool                    no_samples                      =  false;
 static bool                    sample_address                  =  false;
-static bool                    multiplex                       =  false;
-static int                     multiplex_fd                    =     -1;
 
 static long                    samples                         =      0;
 static u64                     bytes_written                   =      0;
@@ -366,27 +364,19 @@ try_again:
                 */
                if (group && group_fd == -1)
                        group_fd = fd[nr_cpu][counter][thread_index];
-               if (multiplex && multiplex_fd == -1)
-                       multiplex_fd = fd[nr_cpu][counter][thread_index];
 
-               if (multiplex && fd[nr_cpu][counter][thread_index] != multiplex_fd) {
-
-                       ret = ioctl(fd[nr_cpu][counter][thread_index], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd);
-                       assert(ret != -1);
-               } else {
-                       event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
-                       event_array[nr_poll].events = POLLIN;
-                       nr_poll++;
-
-                       mmap_array[nr_cpu][counter][thread_index].counter = counter;
-                       mmap_array[nr_cpu][counter][thread_index].prev = 0;
-                       mmap_array[nr_cpu][counter][thread_index].mask = mmap_pages*page_size - 1;
-                       mmap_array[nr_cpu][counter][thread_index].base = mmap(NULL, (mmap_pages+1)*page_size,
-                               PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter][thread_index], 0);
-                       if (mmap_array[nr_cpu][counter][thread_index].base == MAP_FAILED) {
-                               error("failed to mmap with %d (%s)\n", errno, strerror(errno));
-                               exit(-1);
-                       }
+               event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
+               event_array[nr_poll].events = POLLIN;
+               nr_poll++;
+
+               mmap_array[nr_cpu][counter][thread_index].counter = counter;
+               mmap_array[nr_cpu][counter][thread_index].prev = 0;
+               mmap_array[nr_cpu][counter][thread_index].mask = mmap_pages*page_size - 1;
+               mmap_array[nr_cpu][counter][thread_index].base = mmap(NULL, (mmap_pages+1)*page_size,
+                       PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter][thread_index], 0);
+               if (mmap_array[nr_cpu][counter][thread_index].base == MAP_FAILED) {
+                       error("failed to mmap with %d (%s)\n", errno, strerror(errno));
+                       exit(-1);
                }
 
                if (filter != NULL) {
@@ -820,8 +810,6 @@ static const struct option options[] = {
                    "Sample addresses"),
        OPT_BOOLEAN('n', "no-samples", &no_samples,
                    "don't sample"),
-       OPT_BOOLEAN('M', "multiplex", &multiplex,
-                   "multiplex counter output in a single channel"),
        OPT_END()
 };