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author | Wang Nan <wangnan0@huawei.com> | 2016-06-27 10:24:03 +0000 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-06-28 10:54:53 -0300 |
commit | cda57a8c74aa326cbb1a1e2f7d30f8c76983e70c (patch) | |
tree | a78956a34d589b5b4196225d371a0234f6f0b870 /tools/perf/builtin-record.c | |
parent | f6c12a004c149a7b0ea1332fa715979888dd4695 (diff) | |
download | linux-cda57a8c74aa326cbb1a1e2f7d30f8c76983e70c.tar.gz linux-cda57a8c74aa326cbb1a1e2f7d30f8c76983e70c.tar.bz2 linux-cda57a8c74aa326cbb1a1e2f7d30f8c76983e70c.zip |
perf record: Move mmap setup block to separate function
Following commits introduce multiple evlists to record. This patch
extracts perf_evlist__mmap_ex() processing to a new function, creates
record__mmap() and record__mmap_evlist() to wrap perf_evlist__mmap_ex()
and its error processing. They will be improvemented to create mmap for
all evlists.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1467023052-146749-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r-- | tools/perf/builtin-record.c | 56 |
1 files changed, 36 insertions, 20 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 81411b14df4c..7eb8d7d29fbc 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -342,6 +342,40 @@ int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) #endif +static int record__mmap_evlist(struct record *rec, + struct perf_evlist *evlist) +{ + struct record_opts *opts = &rec->opts; + char msg[512]; + + if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, + opts->auxtrace_mmap_pages, + opts->auxtrace_snapshot_mode) < 0) { + if (errno == EPERM) { + pr_err("Permission error mapping pages.\n" + "Consider increasing " + "/proc/sys/kernel/perf_event_mlock_kb,\n" + "or try again with a smaller value of -m/--mmap_pages.\n" + "(current value: %u,%u)\n", + opts->mmap_pages, opts->auxtrace_mmap_pages); + return -errno; + } else { + pr_err("failed to mmap with %d (%s)\n", errno, + strerror_r(errno, msg, sizeof(msg))); + if (errno) + return -errno; + else + return -EINVAL; + } + } + return 0; +} + +static int record__mmap(struct record *rec) +{ + return record__mmap_evlist(rec, rec->evlist); +} + static int record__open(struct record *rec) { char msg[512]; @@ -378,27 +412,9 @@ try_again: goto out; } - if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, - opts->auxtrace_mmap_pages, - opts->auxtrace_snapshot_mode) < 0) { - if (errno == EPERM) { - pr_err("Permission error mapping pages.\n" - "Consider increasing " - "/proc/sys/kernel/perf_event_mlock_kb,\n" - "or try again with a smaller value of -m/--mmap_pages.\n" - "(current value: %u,%u)\n", - opts->mmap_pages, opts->auxtrace_mmap_pages); - rc = -errno; - } else { - pr_err("failed to mmap with %d (%s)\n", errno, - strerror_r(errno, msg, sizeof(msg))); - if (errno) - rc = -errno; - else - rc = -EINVAL; - } + rc = record__mmap(rec); + if (rc) goto out; - } session->evlist = evlist; perf_session__set_id_hdr_size(session); |