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Fri, 15 Aug 2025 08:36:17 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8489120043; Fri, 15 Aug 2025 08:36:17 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B5F5B20040; Fri, 15 Aug 2025 08:36:10 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.240.145]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 15 Aug 2025 08:36:10 +0000 (GMT) From: Athira Rajeev To: acme@kernel.org, jolsa@kernel.org, adrian.hunter@intel.com, maddy@linux.ibm.com, irogers@google.com, namhyung@kernel.org Cc: linux-perf-users@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, aboorvad@linux.ibm.com, sshegde@linux.ibm.com, atrajeev@linux.ibm.com, kjain@linux.ibm.com, hbathini@linux.vnet.ibm.com, Aditya.Bodkhe1@ibm.com, venkat88@linux.ibm.com Subject: [PATCH 13/14] tools/perf: Enable perf script to present the DTL entries Date: Fri, 15 Aug 2025 14:04:06 +0530 Message-Id: <20250815083407.27953-14-atrajeev@linux.ibm.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250815083407.27953-1-atrajeev@linux.ibm.com> References: <20250815083407.27953-1-atrajeev@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: xD30sNIm8Y16RZMcP7pDdCY6_zm3sDJD X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODEyMDIyNCBTYWx0ZWRfX/XjrzUwhTPha asFP9r0wf0a6EE3EbrK1DfR0s2vcw8kdSIBHFxEM4GEPPvKcg5v7B21/hV5yu3kbZarTYN7xFLZ CRDZ5BdQ6G1MgAqk54QQzrZrfukXGzIv9huUnoHXVZxnvitg3p9AosF/yUZlBE2McuJ90xq5Inw Yinr6oTQAx8GTk6VX7hvR5McpgwY8s+zPcouw2cZqgM3zNt23cGyHQXHlLC7BA+ObAiwiK7N78Z tZUt12ERk5+m3R0/qQpsw5J7Pgt8hghO2ZMCGN+U7tuFIVbfGXsDns7MvsMhYK/2UB2MDH8Fx0Z Fyr0XkvzForwl3dxenZysaZn2D5XeXMGkDWAtJaw9LPg5OEnpIm7o1WI0r98Ij0sN5satKlr7Z6 6QHDAh0i X-Proofpoint-GUID: TJuOYSTC6L8THmSwqJ517o1h5T1Tw7lS X-Authority-Analysis: v=2.4 cv=fLg53Yae c=1 sm=1 tr=0 ts=689ef187 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=2OwXVqhp2XgA:10 a=VnNF1IyMAAAA:8 a=u1D-RBGd0xOBWWY2JRAA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-15_02,2025-08-14_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 spamscore=0 priorityscore=1501 impostorscore=0 phishscore=0 malwarescore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508120224 Enable perf script to present the DTL entries. Process the dispatch trace log details in arch_perf_sample__fprintf_synth_evt() defined in buiultin-script.c file for config value: PERF_SYNTH_POWERPC_VPA_DTL. Sample output: ./perf record -a -e sched:*,vpa_dtl/dtl_all/ -c 1000000000 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.300 MB perf.data ] ./perf script perf 13322 [002] 233.835807: sched:sched_switch: perf:13322 [120] R ==> migration/2:27 [0] migration/2 27 [002] 233.835811: sched:sched_migrate_task: comm=perf pid=13322 prio=120 orig_cpu=2 dest_cpu=3 migration/2 27 [002] 233.835818: sched:sched_stat_runtime: comm=migration/2 pid=27 runtime=9214 [ns] migration/2 27 [002] 233.835819: sched:sched_switch: migration/2:27 [0] S ==> swapper/2:0 [120] swapper 0 [002] 233.835822: vpa-dtl: timebase: 338954486062657 dispatch_reason:decrementer_interrupt, preempt_reason:H_CEDE, enqueue_to_dispatch_time:435, ready_to_enqueue_time:0, waiting_to_ready_time:34775058, processor_id: 202 c0000000000f8094 plpar_hcall_norets_notrace+0x18 ([kernel.kallsyms]) swapper 0 [001] 233.835886: vpa-dtl: timebase: 338954486095398 dispatch_reason:priv_doorbell, preempt_reason:H_CEDE, enqueue_to_dispatch_time:542, ready_to_enqueue_time:0, waiting_to_ready_time:1245360, processor_id: 201 c0000000000f8094 plpar_hcall_norets_notrace+0x18 ([kernel.kallsyms]) Signed-off-by: Athira Rajeev --- tools/perf/builtin-script.c | 23 +++++++++++++++++++++-- tools/perf/util/powerpc-vpadtl.c | 16 ---------------- tools/perf/util/powerpc-vpadtl.h | 19 +++++++++++++++++++ 3 files changed, 40 insertions(+), 18 deletions(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index eff584735980..a0faadaadc4d 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -66,6 +66,7 @@ #include "util/cgroup.h" #include "util/annotate.h" #include "perf.h" +#include "util/powerpc-vpadtl.h" #include #ifdef HAVE_LIBTRACEEVENT @@ -2004,8 +2005,26 @@ static int perf_sample__fprintf_synth_iflag_chg(struct perf_sample *sample, FILE } static void arch_perf_sample__fprintf_synth_evt(struct perf_sample *data __maybe_unused, - FILE *fp __maybe_unused, u64 config __maybe_unused) + FILE *fp __maybe_unused, u64 config __maybe_unused, struct perf_env *env) { + const char *arch = perf_env__arch(env); + + if (!strcmp("powerpc", arch)) { + struct dtl_entry *dtl = (struct dtl_entry *)data->raw_data; + + if (config != PERF_SYNTH_POWERPC_VPA_DTL) + return; + fprintf(fp, "timebase: %" PRIu64 "dispatch_reason:%s, preempt_reason:%s, enqueue_to_dispatch_time:%d,\ + ready_to_enqueue_time:%d, waiting_to_ready_time:%d, processor_id: %d",\ + be64_to_cpu(dtl->timebase), + dispatch_reasons[dtl->dispatch_reason], + preempt_reasons[dtl->preempt_reason], + be32_to_cpu(dtl->enqueue_to_dispatch_time), + be32_to_cpu(dtl->ready_to_enqueue_time), + be32_to_cpu(dtl->waiting_to_ready_time), + be16_to_cpu(dtl->processor_id)); + } + return; } @@ -2032,7 +2051,7 @@ static int perf_sample__fprintf_synth(struct perf_sample *sample, case PERF_SYNTH_INTEL_IFLAG_CHG: return perf_sample__fprintf_synth_iflag_chg(sample, fp); default: - arch_perf_sample__fprintf_synth_evt(sample, fp, evsel->core.attr.config); + arch_perf_sample__fprintf_synth_evt(sample, fp, evsel->core.attr.config, evsel__env(evsel)); break; } diff --git a/tools/perf/util/powerpc-vpadtl.c b/tools/perf/util/powerpc-vpadtl.c index 370c566f9ac2..482ddf1a2d51 100644 --- a/tools/perf/util/powerpc-vpadtl.c +++ b/tools/perf/util/powerpc-vpadtl.c @@ -30,22 +30,6 @@ #include "symbol.h" #include "tool.h" -/* - * The DTL entries are of below format - */ -struct dtl_entry { - u8 dispatch_reason; - u8 preempt_reason; - u16 processor_id; - u32 enqueue_to_dispatch_time; - u32 ready_to_enqueue_time; - u32 waiting_to_ready_time; - u64 timebase; - u64 fault_addr; - u64 srr0; - u64 srr1; -}; - /* * Structure to save the auxtrace queue */ diff --git a/tools/perf/util/powerpc-vpadtl.h b/tools/perf/util/powerpc-vpadtl.h index 625172adaba5..497f704787a5 100644 --- a/tools/perf/util/powerpc-vpadtl.h +++ b/tools/perf/util/powerpc-vpadtl.h @@ -20,6 +20,25 @@ union perf_event; struct perf_session; struct perf_pmu; +/* + * The DTL entries are of below format + */ +struct dtl_entry { + u8 dispatch_reason; + u8 preempt_reason; + u16 processor_id; + u32 enqueue_to_dispatch_time; + u32 ready_to_enqueue_time; + u32 waiting_to_ready_time; + u64 timebase; + u64 fault_addr; + u64 srr0; + u64 srr1; +}; + +extern const char *dispatch_reasons[11]; +extern const char *preempt_reasons[10]; + int powerpc_vpadtl_process_auxtrace_info(union perf_event *event, struct perf_session *session); -- 2.47.1