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Thu, 6 Sep 2018 13:44:24 -0400 Received: from terminus.zytor.com ([198.137.202.136]:45831 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727636AbeIFRoX (ORCPT ); Thu, 6 Sep 2018 13:44:23 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id w86D8mlP303744 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 6 Sep 2018 06:08:48 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id w86D8liP303740; Thu, 6 Sep 2018 06:08:47 -0700 Date: Thu, 6 Sep 2018 06:08:47 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: jolsa@kernel.org, tglx@linutronix.de, adrian.hunter@intel.com, wangnan0@huawei.com, dsahern@gmail.com, namhyung@kernel.org, acme@redhat.com, mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org Reply-To: hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@kernel.org, namhyung@kernel.org, dsahern@gmail.com, wangnan0@huawei.com, acme@redhat.com, tglx@linutronix.de, adrian.hunter@intel.com, jolsa@kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf trace: Print the syscall name for augmented_syscalls Git-Commit-ID: 1cdf618f23867dd1dae58f10f1f82839f2bf73b4 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 1cdf618f23867dd1dae58f10f1f82839f2bf73b4 Gitweb: https://git.kernel.org/tip/1cdf618f23867dd1dae58f10f1f82839f2bf73b4 Author: Arnaldo Carvalho de Melo AuthorDate: Tue, 21 Aug 2018 11:44:23 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 30 Aug 2018 15:52:19 -0300 perf trace: Print the syscall name for augmented_syscalls Since we copy all the payload for raw_syscalls:sys_enter plus add expanded pointers, we can use the syscall id to get its name, etc: # grep 'field:.* id' /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/format field:long id; offset:8; size:8; signed:1; # Before: # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c,openat cat /etc/passwd > /dev/null 0.000 ( ): __augmented_syscalls__:dfd: CWD, filename: 0xec9f9da8, flags: CLOEXEC 0.006 ( 0.006 ms): cat/2395 openat(dfd: CWD, filename: 0xec9f9da8, flags: CLOEXEC) = 3 0.041 ( ): __augmented_syscalls__:dfd: CWD, filename: 0xecc01ce0, flags: CLOEXEC 0.042 ( 0.007 ms): cat/2395 openat(dfd: CWD, filename: 0xecc01ce0, flags: CLOEXEC) = 3 0.376 ( ): __augmented_syscalls__:dfd: CWD, filename: 0xac0a806b 0.379 ( 0.006 ms): cat/2395 openat(dfd: CWD, filename: 0xac0a806b) = 3 # After: # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c,openat cat /etc/passwd > /dev/null 0.000 ( ): openat(dfd: CWD, filename: 0x31b6dda8, flags: CLOEXEC) 0.009 ( 0.009 ms): cat/3619 openat(dfd: CWD, filename: 0x31b6dda8, flags: CLOEXEC) = 3 0.051 ( ): openat(dfd: CWD, filename: 0x31d75ce0, flags: CLOEXEC) 0.054 ( 0.010 ms): cat/3619 openat(dfd: CWD, filename: 0x31d75ce0, flags: CLOEXEC) = 3 0.539 ( ): openat(dfd: CWD, filename: 0xca71506b) 0.543 ( 0.115 ms): cat/3619 openat(dfd: CWD, filename: 0xca71506b) = 3 # Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-epz6y9i0eavmerc5ha98t7gn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 7deae6c8cb25..bcf882afd6d0 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2055,13 +2055,33 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, if (trace->trace_syscalls) fprintf(trace->output, "( ): "); + if (evsel == trace->syscalls.events.augmented) { + int id = perf_evsel__sc_tp_uint(evsel, id, sample); + struct syscall *sc = trace__syscall_info(trace, evsel, id); + + if (sc) { + struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + + if (thread) { + fprintf(trace->output, "%s(", sc->name); + trace__fprintf_sys_enter(trace, evsel, sample); + fputc(')', trace->output); + thread__put(thread); + goto newline; + } + } + + /* + * XXX: Not having the associated syscall info or not finding/adding + * the thread should never happen, but if it does... + * fall thru and print it as a bpf_output event. + */ + } + fprintf(trace->output, "%s:", evsel->name); if (perf_evsel__is_bpf_output(evsel)) { - if (evsel == trace->syscalls.events.augmented) - trace__fprintf_sys_enter(trace, evsel, sample); - else - bpf_output__fprintf(trace, sample); + bpf_output__fprintf(trace, sample); } else if (evsel->tp_format) { if (strncmp(evsel->tp_format->name, "sys_enter_", 10) || trace__fprintf_sys_enter(trace, evsel, sample)) { @@ -2071,6 +2091,7 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, } } +newline: fprintf(trace->output, "\n"); if (callchain_ret > 0)