[tip:perf/core] perf-record: Remove -M

tip-bot for Peter Zijlstra
2010-05-21T11:29:21Z

Commit-ID: 57adc51dce9102b6641269dd04f5b99aac83b820
Gitweb: http://git.kernel.org/tip/57adc51dce9102b6641269dd04f5b99aac83b820
Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
AuthorDate: Thu, 20 May 2010 14:39:55 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Fri, 21 May 2010 11:37:57 +0200

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cross-task) buffers, this option is no longer valid.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>
---
tools/perf/builtin-record.c | 36 ++++++++++++------------------------
1 files changed, 12 insertions(+), 24 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e672269..94e210f 100644
--- 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()
};