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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cross-task) buffers, this option is no longer valid.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>
This commit is contained in:
Peter Zijlstra 2010-05-20 14:39:55 +02:00 committed by Ingo Molnar
parent 0f139300c9
commit 57adc51dce
1 changed files with 11 additions and 23 deletions
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34
tools/perf/builtin-record.c
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@ -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) {
event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
event_array[nr_poll].events = POLLIN;
nr_poll++;
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);
}
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()
};