Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753061AbbDCFJ6 (ORCPT ); Fri, 3 Apr 2015 01:09:58 -0400 Received: from terminus.zytor.com ([198.137.202.10]:43059 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753022AbbDCFJx (ORCPT ); Fri, 3 Apr 2015 01:09:53 -0400 Date: Thu, 2 Apr 2015 22:09:30 -0700 From: tip-bot for Yunlong Song Message-ID: Cc: linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, paulus@samba.org, tglx@linutronix.de, wangnan0@huawei.com, acme@redhat.com, yunlong.song@huawei.com, hpa@zytor.com, mingo@kernel.org Reply-To: a.p.zijlstra@chello.nl, wangnan0@huawei.com, paulus@samba.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, acme@redhat.com, yunlong.song@huawei.com In-Reply-To: <1427982439-27388-7-git-send-email-yunlong.song@huawei.com> References: <1427982439-27388-7-git-send-email-yunlong.song@huawei.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf mem: Support using -f to override perf.data file ownership Git-Commit-ID: 62a1a63a77451dee8fd318a5106ca108d6a8ebcb X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4199 Lines: 114 Commit-ID: 62a1a63a77451dee8fd318a5106ca108d6a8ebcb Gitweb: http://git.kernel.org/tip/62a1a63a77451dee8fd318a5106ca108d6a8ebcb Author: Yunlong Song AuthorDate: Thu, 2 Apr 2015 21:47:15 +0800 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 2 Apr 2015 13:18:49 -0300 perf mem: Support using -f to override perf.data file ownership Enable perf mem to use perf.data when it is not owned by current user or root. Example: # perf mem -t load record ls # chown Yunlong.Song:Yunlong.Song perf.data # ls -al perf.data -rw------- 1 Yunlong.Song Yunlong.Song 16392 Apr 2 14:34 perf.data # id uid=0(root) gid=0(root) groups=0(root),64(pkcs11) Before this patch: # perf mem -D report File perf.data not owned by current user or root (use -f to override) # perf mem -D -f report Error: unknown switch `f' usage: perf mem [] {record|report} -t, --type memory operations(load,store) Default load,store -D, --dump-raw-samples dump raw samples in ASCII -U, --hide-unresolved Only display entries resolved to a symbol -i, --input input file name -C, --cpu list of cpus to profile -x, --field-separator separator for columns, no spaces will be added between columns '.' is reserved. As shown above, the -f option does not work at all. After this patch: # perf mem -D report File perf.data not owned by current user or root (use -f to override) # perf mem -D -f report # PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL 39095 39095 0xffffffff81127e40 0x016ffff887f45148338 8 0x68100142 /proc/kcore:perf_event_aux 39095 39095 0xffffffff8100a3fe 0xffff89007f8cb7d0 6 0x68100142 /proc/kcore:native_sched_clock 39095 39095 0xffffffff81309139 0xffff88bf44c9ded8 6 0x68100142 /proc/kcore:acpi_map_lookup 39095 39095 0xffffffff810f8c4c 0xffff89007f8ccd88 6 0x68100142 /proc/kcore:rcu_nmi_exit 39095 39095 0xffffffff81136346 0xffff88fea995dd50 6 0x68100142 /proc/kcore:unlock_page 39095 39095 0xffffffff812a64a2 0xffff88fea995dcc8 6 0x68100142 /proc/kcore:half_md4_transform 39095 39095 0x7f0cf877c7e9 0x25dfb94 6 0x68100142 /lib64/libc-2.19.so:__readdir64 39095 39095 0x7f0cf87575a3 0x7f0cf9163731 6 0x68100142 /lib64/libc-2.19.so:__strcoll_l 39095 39095 0xffffffff8116910e 0xffffea01c1bfbd50 23 0x68100242 /proc/kcore:page_remove_rmap As shown above, the -f option really works now. Signed-off-by: Yunlong Song Tested-by: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1427982439-27388-7-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-mem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index b4dcf0b..675216e 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -15,6 +15,7 @@ struct perf_mem { char const *input_name; bool hide_unresolved; bool dump_raw; + bool force; int operation; const char *cpu_list; DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); @@ -120,6 +121,7 @@ static int report_raw_events(struct perf_mem *mem) struct perf_data_file file = { .path = input_name, .mode = PERF_DATA_MODE_READ, + .force = mem->force, }; int err = -EINVAL; int ret; @@ -290,6 +292,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) "separator", "separator for columns, no spaces will be added" " between columns '.' is reserved."), + OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"), OPT_END() }; const char *const mem_subcommands[] = { "record", "report", NULL }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/