From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752278AbcFVJNL (ORCPT ); Wed, 22 Jun 2016 05:13:11 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:7974 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751729AbcFVJJq (ORCPT ); Wed, 22 Jun 2016 05:09:46 -0400 From: Wang Nan To: CC: , , Wang Nan , Arnaldo Carvalho de Melo , Jiri Olsa , Masami Hiramatsu , Namhyung Kim , Zefan Li , He Kuang Subject: [PATCH v9 3/8] perf record: Extract perf_evlist__mmap_ex() processing to a new function Date: Wed, 22 Jun 2016 09:08:46 +0000 Message-ID: <1466586531-89751-4-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1466586531-89751-1-git-send-email-wangnan0@huawei.com> References: <1466586531-89751-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020203.576A55D2.0083,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 40c949b2b15e215b64da5b7f491b10fb Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Create record__mmap() and record__mmap_evlist() to wrap perf_evlist__mmap_ex() and its error processing. Following commits will introdule multiple evlists for 'perf record'. record__mmap() and record__mmap_evlist() will be improvemented to create mmap for each evlist. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: He Kuang --- tools/perf/builtin-record.c | 56 +++++++++++++++++++++++++++++---------------- 1 file changed, 36 insertions(+), 20 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index b1304eb..7998ec3 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -341,6 +341,40 @@ 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]; @@ -377,27 +411,9 @@ 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); -- 1.8.3.4