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[18.166.74.158]) by smtp.gmail.com with ESMTPSA id a26sm5145016pff.149.2021.04.28.04.58.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Apr 2021 04:58:24 -0700 (PDT) From: Leo Yan To: Arnaldo Carvalho de Melo , Adrian Hunter , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Steve MacLean , Yonatan Goldschmidt , "Gustavo A. R. Silva" , Kan Liang , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Leo Yan Subject: [PATCH v2 4/4] perf session: Dump PERF_RECORD_TIME_CONV event Date: Wed, 28 Apr 2021 19:57:49 +0800 Message-Id: <20210428115749.5229-5-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210428115749.5229-1-leo.yan@linaro.org> References: <20210428115749.5229-1-leo.yan@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Now perf tool uses the common stub function process_event_op2_stub() for dumping TIME_CONV event, thus it doesn't output the clock parameters contained in the event. This patch adds the callback function for dumping the hardware clock parameters in TIME_CONV event. Before: # perf report -D 0x978 [0x38]: event: 79 . . ... raw event: size 56 bytes . 0000: 4f 00 00 00 00 00 38 00 15 00 00 00 00 00 00 00 O.....8......... . 0010: 00 00 40 01 00 00 00 00 86 89 0b bf df ff ff ff ..@........ . 0020: d1 c1 b2 39 03 00 00 00 ff ff ff ff ff ff ff 00 9..... . 0030: 01 01 00 00 00 00 00 00 ........ 0 0 0x978 [0x38]: PERF_RECORD_TIME_CONV : unhandled! [...] After: # perf report -D 0x978 [0x38]: event: 79 . . ... raw event: size 56 bytes . 0000: 4f 00 00 00 00 00 38 00 15 00 00 00 00 00 00 00 O.....8......... . 0010: 00 00 40 01 00 00 00 00 86 89 0b bf df ff ff ff ..@........ . 0020: d1 c1 b2 39 03 00 00 00 ff ff ff ff ff ff ff 00 9..... . 0030: 01 01 00 00 00 00 00 00 ........ 0 0 0x978 [0x38]: PERF_RECORD_TIME_CONV ... Time Shift 21 ... Time Muliplier 20971520 ... Time Zero 18446743935180835206 ... Time Cycles 13852918225 ... Time Mask 0xffffffffffffff ... Cap Time Zero 1 ... Cap Time Short 1 : unhandled! [...] Signed-off-by: Leo Yan Acked-by: Adrian Hunter --- tools/perf/util/session.c | 13 ++++++++++++- tools/perf/util/tsc.c | 30 ++++++++++++++++++++++++++++++ tools/perf/util/tsc.h | 4 ++++ 3 files changed, 46 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 1e3cab92042d..cb6f9344341e 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -29,6 +29,7 @@ #include "thread-stack.h" #include "sample-raw.h" #include "stat.h" +#include "tsc.h" #include "ui/progress.h" #include "../perf.h" #include "arch/common.h" @@ -451,6 +452,16 @@ static int process_stat_round_stub(struct perf_session *perf_session __maybe_unu return 0; } +static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused, + union perf_event *event) +{ + if (dump_trace) + perf_event__fprintf_time_conv(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused, union perf_event *event __maybe_unused, u64 file_offset __maybe_unused) @@ -532,7 +543,7 @@ void perf_tool__fill_defaults(struct perf_tool *tool) if (tool->stat_round == NULL) tool->stat_round = process_stat_round_stub; if (tool->time_conv == NULL) - tool->time_conv = process_event_op2_stub; + tool->time_conv = process_event_time_conv_stub; if (tool->feature == NULL) tool->feature = process_event_op2_stub; if (tool->compressed == NULL) diff --git a/tools/perf/util/tsc.c b/tools/perf/util/tsc.c index 62b4c75c966c..f19791d46e99 100644 --- a/tools/perf/util/tsc.c +++ b/tools/perf/util/tsc.c @@ -1,5 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include +#include #include #include @@ -110,3 +112,31 @@ u64 __weak rdtsc(void) { return 0; } + +size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp) +{ + struct perf_record_time_conv *tc = (struct perf_record_time_conv *)event; + size_t ret; + + ret = fprintf(fp, "\n... Time Shift %" PRI_lu64 "\n", tc->time_shift); + ret += fprintf(fp, "... Time Muliplier %" PRI_lu64 "\n", tc->time_mult); + ret += fprintf(fp, "... Time Zero %" PRI_lu64 "\n", tc->time_zero); + + /* + * The event TIME_CONV was extended for the fields from "time_cycles" + * when supported cap_user_time_short, for backward compatibility, + * prints the extended fields only if they are contained in the event. + */ + if (event_contains(*tc, time_cycles)) { + ret += fprintf(fp, "... Time Cycles %" PRI_lu64 "\n", + tc->time_cycles); + ret += fprintf(fp, "... Time Mask %#" PRI_lx64 "\n", + tc->time_mask); + ret += fprintf(fp, "... Cap Time Zero %" PRId32 "\n", + tc->cap_user_time_zero); + ret += fprintf(fp, "... Cap Time Short %" PRId32 "\n", + tc->cap_user_time_short); + } + + return ret; +} diff --git a/tools/perf/util/tsc.h b/tools/perf/util/tsc.h index 72a15419f3b3..7d83a31732a7 100644 --- a/tools/perf/util/tsc.h +++ b/tools/perf/util/tsc.h @@ -4,6 +4,8 @@ #include +#include "event.h" + struct perf_tsc_conversion { u16 time_shift; u32 time_mult; @@ -24,4 +26,6 @@ u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); u64 rdtsc(void); +size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp); + #endif // __PERF_TSC_H -- 2.25.1