Em Mon, Sep 09, 2013 at 04:47:45PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Aug 21, 2013 at 12:10:25PM +0200, Stephane Eranian escreveu:
> > This patch adds support for the new PERF_RECORD_MMAP2
> > record type exposed by the kernel. This is an extended
> > PERF_RECORD_MMAP record. It adds for each file-backed
> > mapping the device major, minor number and the inode
> > number and generation. This triplet uniquely identifies
> > the source of a file-backed mapping. It can be used to
> > detect identical virtual mappings between processes, for
> > instance.
> >
> > The patch will prefer MMAP2 over MMAP.
>
> I noticed the kernel part is in, and I'm going to use MMAP2 on that new
> tool, so tried merging it, but:
>
> I fixed it up wrt another patch that makes machine__find_thread receive
> pid/tid
> but then 'perf test' complains about it, see below, trying to fix...
Following patch makes it progress a bit, still checking why it is not
enough...
- Arnaldo
diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 72d8881..b8a7056 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -50,7 +50,7 @@ int test__PERF_RECORD(void)
struct perf_sample sample;
const char *cmd = "sleep";
const char *argv[] = { cmd, "1", NULL, };
- char *bname;
+ char *bname, *mmap_filename;
u64 prev_time = 0;
bool found_cmd_mmap = false,
found_libc_mmap = false,
@@ -212,6 +212,7 @@ int test__PERF_RECORD(void)
if ((type == PERF_RECORD_COMM ||
type == PERF_RECORD_MMAP ||
+ type == PERF_RECORD_MMAP2 ||
type == PERF_RECORD_FORK ||
type == PERF_RECORD_EXIT) &&
(pid_t)event->comm.pid !=
evlist->workload.pid) {
@@ -220,7 +221,8 @@ int test__PERF_RECORD(void)
}
if ((type == PERF_RECORD_COMM ||
- type == PERF_RECORD_MMAP) &&
+ type == PERF_RECORD_MMAP ||
+ type == PERF_RECORD_MMAP2) &&
event->comm.pid != event->comm.tid) {
pr_debug("%s with different
pid/tid!\n", name);
++errs;
@@ -236,7 +238,12 @@ int test__PERF_RECORD(void)
case PERF_RECORD_EXIT:
goto found_exit;
case PERF_RECORD_MMAP:
- bname = strrchr(event->mmap.filename,
'/');
+ mmap_filename = event->mmap.filename;
+ goto check_bname;
+ case PERF_RECORD_MMAP2:
+ mmap_filename = event->mmap2.filename;
+ check_bname:
+ bname = strrchr(mmap_filename, '/');
if (bname != NULL) {
if (!found_cmd_mmap)
found_cmd_mmap =
!strcmp(bname + 1, cmd);
@@ -245,7 +252,7 @@ int test__PERF_RECORD(void)
if (!found_ld_mmap)
found_ld_mmap =
!strncmp(bname + 1, "ld", 2);
} else if (!found_vdso_mmap)
- found_vdso_mmap =
!strcmp(event->mmap.filename, "[vdso]");
+ found_vdso_mmap =
!strcmp(mmap_filename, "[vdso]");
break;
case PERF_RECORD_SAMPLE:
--
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