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From: Kajetan Puchalski <kajetan.puchalski@arm.com>
To: Yafang Shao <laoar.shao@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	John Stultz <jstultz@google.com>,
	Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Network Development <netdev@vger.kernel.org>,
	bpf <bpf@vger.kernel.org>,
	"linux-perf-use." <linux-perf-users@vger.kernel.org>,
	Linux-Fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	LKML <linux-kernel@vger.kernel.org>,
	kernel test robot <oliver.sang@intel.com>,
	kbuild test robot <lkp@intel.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	David Hildenbrand <david@redhat.com>,
	Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
	Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	Michal Miroslaw <mirq-linux@rere.qmqm.pl>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Matthew Wilcox <willy@infradead.org>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Kees Cook <keescook@chromium.org>, Petr Mladek <pmladek@suse.com>,
	Lukasz Luba <lukasz.luba@arm.com>,
	Qais Yousef <qyousef@google.com>,
	Daniele Di Proietto <ddiproietto@google.com>
Subject: Re: [PATCH v2 7/7] tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN
Date: Fri, 10 Feb 2023 18:09:30 +0000	[thread overview]
Message-ID: <Y+aISmbGPdAJrg/R@e126311.manchester.arm.com> (raw)
In-Reply-To: <CALOAHbCdNZ21oBE2ii_XBxecYLSxM7Ws2LRMirdEOpeULiNk4g@mail.gmail.com>

On Thu, Feb 09, 2023 at 11:37:44PM +0800, Yafang Shao wrote:
> 
> > It goes from "not working at all" to "mostly working but missing data"
> > compared to what happens if I just revert 3087c61ed2c48548b74dd343a5209b87082c682d.
> >
> 
> Do you mean there are no errors at all if revert
> 3087c61ed2c48548b74dd343a5209b87082c682d ?

Correct yes, the revert makes it work perfectly.

> > I'm just an end user so can't really speak to the underlying causes but
> > for those more familiar with how Perfetto works this is what I'm getting:
> >
> 
> The sched_switch tracepoint format file has the same output with
> reverting the commit,
> 
> $ cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
> name: sched_switch
> ID: 286
> format:
> field:unsigned short common_type; offset:0; size:2; signed:0;
> field:unsigned char common_flags; offset:2; size:1; signed:0;
> field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
> field:int common_pid; offset:4; size:4; signed:1;
> field:char prev_comm[16]; offset:8; size:16; signed:0;
> field:pid_t prev_pid; offset:24; size:4; signed:1;
> field:int prev_prio; offset:28; size:4; signed:1;
> field:long prev_state; offset:32; size:8; signed:1;
> field:char next_comm[16]; offset:40; size:16; signed:0;
> field:pid_t next_pid; offset:56; size:4; signed:1;
> field:int next_prio; offset:60; size:4; signed:1;
> 
> print fmt: "prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==>
> next_comm=%s next_pid=%d next_prio=%d", REC->prev_comm, REC->prev_pid,
> REC->prev_prio, (REC->prev_state & ((((0x00000000 | 0x00000001 |
> 0x00000002 | 0x00000004 | 0x00000008 | 0x00000010 | 0x00000020 |
> 0x00000040) + 1) << 1) - 1)) ? __print_flags(REC->prev_state &
> ((((0x00000000 | 0x00000001 | 0x00000002 | 0x00000004 | 0x00000008 |
> 0x00000010 | 0x00000020 | 0x00000040) + 1) << 1) - 1), "|", {
> 0x00000001, "S" }, { 0x00000002, "D" }, { 0x00000004, "T" }, {
> 0x00000008, "t" }, { 0x00000010, "X" }, { 0x00000020, "Z" }, {
> 0x00000040, "P" }, { 0x00000080, "I" }) : "R", REC->prev_state &
> (((0x00000000 | 0x00000001 | 0x00000002 | 0x00000004 | 0x00000008 |
> 0x00000010 | 0x00000020 | 0x00000040) + 1) << 1) ? "+" : "",
> REC->next_comm, REC->next_pid, REC->next_prio
> 
> So may be these errors were caused by other issues ?

As I said not really sure why it's happening but there's definitely an
issue somewhere.

I'm hoping someone more familiar with how Perfetto works might have an
idea.

> > Error stats for this trace:
> >                                     name                                      idx                                   source                                    value
> > ---------------------------------------- ---------------------------------------- ---------------------------------------- ----------------------------------------
> > mismatched_sched_switch_tids             [NULL]                                   analysis                                                                    11101
> > systrace_parse_failure                   [NULL]                                   analysis                                                                    19040
> >
> > The trace explorer window ends up containing the ftrace-specific tracks
> > but missing the tracks related to Android-specific callbacks and such.
> >
> > Debug stats below in case they're relevant:
> >
> > Name    Value   Type
> > android_br_parse_errors 0       error (trace)
> > android_log_format_invalid      0       error (trace)
> > android_log_num_failed  0       error (trace)
> > android_log_num_skipped 0       info (trace)
> > android_log_num_total   0       info (trace)
> > clock_sync_cache_miss   181     info (analysis)
> > clock_sync_failure      0       error (analysis)
> > compact_sched_has_parse_errors  0       error (trace)
> > compact_sched_switch_skipped    0       info (analysis)
> > compact_sched_waking_skipped    0       info (analysis)
> > counter_events_out_of_order     0       error (analysis)
> > deobfuscate_location_parse_error        0       error (trace)
> > empty_chrome_metadata   0       error (trace)
> > energy_breakdown_missing_values 0       error (analysis)
> > energy_descriptor_invalid       0       error (analysis)
> > energy_uid_breakdown_missing_values     0       error (analysis)
> > flow_duplicate_id       0       error (trace)
> > flow_end_without_start  0       info (trace)
> > flow_invalid_id 0       error (trace)
> > flow_no_enclosing_slice 0       error (trace)
> > flow_step_without_start 0       info (trace)
> > flow_without_direction  0       error (trace)
> > frame_timeline_event_parser_errors      0       info (analysis)
> > ftrace_bundle_tokenizer_errors  0       error (analysis)
> > ftrace_cpu_bytes_read_begin[0]  0       info (trace)
> > ftrace_cpu_bytes_read_begin[1]  264     info (trace)
> > ftrace_cpu_bytes_read_begin[2]  0       info (trace)
> > ftrace_cpu_bytes_read_begin[3]  224     info (trace)
> > ftrace_cpu_bytes_read_begin[4]  0       info (trace)
> > ftrace_cpu_bytes_read_begin[5]  0       info (trace)
> > ftrace_cpu_bytes_read_begin[6]  0       info (trace)
> > ftrace_cpu_bytes_read_begin[7]  0       info (trace)
> > ftrace_cpu_bytes_read_delta[0]  6919836 info (trace)
> > ftrace_cpu_bytes_read_delta[1]  7197556 info (trace)
> > ftrace_cpu_bytes_read_delta[2]  6381828 info (trace)
> > ftrace_cpu_bytes_read_delta[3]  5988336 info (trace)
> > ftrace_cpu_bytes_read_delta[4]  5933528 info (trace)
> > ftrace_cpu_bytes_read_delta[5]  4858400 info (trace)
> > ftrace_cpu_bytes_read_delta[6]  6175260 info (trace)
> > ftrace_cpu_bytes_read_delta[7]  4633460 info (trace)
> > ftrace_cpu_bytes_read_end[0]    6919836 info (trace)
> > ftrace_cpu_bytes_read_end[1]    7197820 info (trace)
> > ftrace_cpu_bytes_read_end[2]    6381828 info (trace)
> > ftrace_cpu_bytes_read_end[3]    5988560 info (trace)
> > ftrace_cpu_bytes_read_end[4]    5933528 info (trace)
> > ftrace_cpu_bytes_read_end[5]    4858400 info (trace)
> > ftrace_cpu_bytes_read_end[6]    6175260 info (trace)
> > ftrace_cpu_bytes_read_end[7]    4633460 info (trace)
> > ftrace_cpu_commit_overrun_begin[0]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[1]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[2]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[3]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[4]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[5]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[6]      0       info (trace)
> > ftrace_cpu_commit_overrun_begin[7]      0       info (trace)
> > ftrace_cpu_commit_overrun_delta[0]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[1]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[2]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[3]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[4]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[5]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[6]      0       error (trace)
> > ftrace_cpu_commit_overrun_delta[7]      0       error (trace)
> > ftrace_cpu_commit_overrun_end[0]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[1]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[2]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[3]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[4]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[5]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[6]        0       info (trace)
> > ftrace_cpu_commit_overrun_end[7]        0       info (trace)
> > ftrace_cpu_dropped_events_begin[0]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[1]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[2]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[3]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[4]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[5]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[6]      0       info (trace)
> > ftrace_cpu_dropped_events_begin[7]      0       info (trace)
> > ftrace_cpu_dropped_events_delta[0]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[1]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[2]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[3]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[4]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[5]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[6]      0       error (trace)
> > ftrace_cpu_dropped_events_delta[7]      0       error (trace)
> > ftrace_cpu_dropped_events_end[0]        0       info (trace)
> > ftrace_cpu_dropped_events_end[1]        0       info (trace)
> > ftrace_cpu_dropped_events_end[2]        0       info (trace)
> > ftrace_cpu_dropped_events_end[3]        0       info (trace)
> > ftrace_cpu_dropped_events_end[4]        0       info (trace)
> > ftrace_cpu_dropped_events_end[5]        0       info (trace)
> > ftrace_cpu_dropped_events_end[6]        0       info (trace)
> > ftrace_cpu_dropped_events_end[7]        0       info (trace)
> > ftrace_cpu_entries_begin[0]     0       info (trace)
> > ftrace_cpu_entries_begin[1]     6       info (trace)
> > ftrace_cpu_entries_begin[2]     0       info (trace)
> > ftrace_cpu_entries_begin[3]     5       info (trace)
> > ftrace_cpu_entries_begin[4]     0       info (trace)
> > ftrace_cpu_entries_begin[5]     0       info (trace)
> > ftrace_cpu_entries_begin[6]     0       info (trace)
> > ftrace_cpu_entries_begin[7]     0       info (trace)
> > ftrace_cpu_entries_delta[0]     6       info (trace)
> > ftrace_cpu_entries_delta[1]     -6      info (trace)
> > ftrace_cpu_entries_delta[2]     0       info (trace)
> > ftrace_cpu_entries_delta[3]     2       info (trace)
> > ftrace_cpu_entries_delta[4]     0       info (trace)
> > ftrace_cpu_entries_delta[5]     0       info (trace)
> > ftrace_cpu_entries_delta[6]     0       info (trace)
> > ftrace_cpu_entries_delta[7]     0       info (trace)
> > ftrace_cpu_entries_end[0]       6       info (trace)
> > ftrace_cpu_entries_end[1]       0       info (trace)
> > ftrace_cpu_entries_end[2]       0       info (trace)
> > ftrace_cpu_entries_end[3]       7       info (trace)
> > ftrace_cpu_entries_end[4]       0       info (trace)
> > ftrace_cpu_entries_end[5]       0       info (trace)
> > ftrace_cpu_entries_end[6]       0       info (trace)
> > ftrace_cpu_entries_end[7]       0       info (trace)
> > ftrace_cpu_now_ts_begin[0]      93305027000     info (trace)
> > ftrace_cpu_now_ts_begin[1]      93305103000     info (trace)
> > ftrace_cpu_now_ts_begin[2]      93305159000     info (trace)
> > ftrace_cpu_now_ts_begin[3]      93305207000     info (trace)
> > ftrace_cpu_now_ts_begin[4]      93305262000     info (trace)
> > ftrace_cpu_now_ts_begin[5]      93305312000     info (trace)
> > ftrace_cpu_now_ts_begin[6]      93305362000     info (trace)
> > ftrace_cpu_now_ts_begin[7]      93305411000     info (trace)
> > ftrace_cpu_now_ts_end[0]        282906571000    info (trace)
> > ftrace_cpu_now_ts_end[1]        282906676000    info (trace)
> > ftrace_cpu_now_ts_end[2]        282906738000    info (trace)
> > ftrace_cpu_now_ts_end[3]        282906803000    info (trace)
> > ftrace_cpu_now_ts_end[4]        282906863000    info (trace)
> > ftrace_cpu_now_ts_end[5]        282906925000    info (trace)
> > ftrace_cpu_now_ts_end[6]        282906987000    info (trace)
> > ftrace_cpu_now_ts_end[7]        282907048000    info (trace)
> > ftrace_cpu_oldest_event_ts_begin[0]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_begin[1]     93304642000     info (trace)
> > ftrace_cpu_oldest_event_ts_begin[2]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_begin[3]     93304876000     info (trace)
> > ftrace_cpu_oldest_event_ts_begin[4]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_begin[5]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_begin[6]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_begin[7]     0       info (trace)
> > ftrace_cpu_oldest_event_ts_end[0]       282905715000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[1]       282903723000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[2]       282903881000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[3]       282816175000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[4]       282896619000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[5]       282884168000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[6]       282783221000    info (trace)
> > ftrace_cpu_oldest_event_ts_end[7]       282880081000    info (trace)
> > ftrace_cpu_overrun_begin[0]     0       info (trace)
> > ftrace_cpu_overrun_begin[1]     0       info (trace)
> > ftrace_cpu_overrun_begin[2]     0       info (trace)
> > ftrace_cpu_overrun_begin[3]     0       info (trace)
> > ftrace_cpu_overrun_begin[4]     0       info (trace)
> > ftrace_cpu_overrun_begin[5]     0       info (trace)
> > ftrace_cpu_overrun_begin[6]     0       info (trace)
> > ftrace_cpu_overrun_begin[7]     0       info (trace)
> > ftrace_cpu_overrun_delta[0]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[1]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[2]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[3]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[4]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[5]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[6]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_delta[7]help_outline 0       data_loss (trace)
> > ftrace_cpu_overrun_end[0]       0       info (trace)
> > ftrace_cpu_overrun_end[1]       0       info (trace)
> > ftrace_cpu_overrun_end[2]       0       info (trace)
> > ftrace_cpu_overrun_end[3]       0       info (trace)
> > ftrace_cpu_overrun_end[4]       0       info (trace)
> > ftrace_cpu_overrun_end[5]       0       info (trace)
> > ftrace_cpu_overrun_end[6]       0       info (trace)
> > ftrace_cpu_overrun_end[7]       0       info (trace)
> > ftrace_cpu_read_events_begin[0] 0       info (trace)
> > ftrace_cpu_read_events_begin[1] 0       info (trace)
> > ftrace_cpu_read_events_begin[2] 0       info (trace)
> > ftrace_cpu_read_events_begin[3] 0       info (trace)
> > ftrace_cpu_read_events_begin[4] 0       info (trace)
> > ftrace_cpu_read_events_begin[5] 0       info (trace)
> > ftrace_cpu_read_events_begin[6] 0       info (trace)
> > ftrace_cpu_read_events_begin[7] 0       info (trace)
> > ftrace_cpu_read_events_delta[0] 454848  info (trace)
> > ftrace_cpu_read_events_delta[1] 453484  info (trace)
> > ftrace_cpu_read_events_delta[2] 386290  info (trace)
> > ftrace_cpu_read_events_delta[3] 356432  info (trace)
> > ftrace_cpu_read_events_delta[4] 393337  info (trace)
> > ftrace_cpu_read_events_delta[5] 325244  info (trace)
> > ftrace_cpu_read_events_delta[6] 392637  info (trace)
> > ftrace_cpu_read_events_delta[7] 350623  info (trace)
> > ftrace_cpu_read_events_end[0]   454848  info (trace)
> > ftrace_cpu_read_events_end[1]   453484  info (trace)
> > ftrace_cpu_read_events_end[2]   386290  info (trace)
> > ftrace_cpu_read_events_end[3]   356432  info (trace)
> > ftrace_cpu_read_events_end[4]   393337  info (trace)
> > ftrace_cpu_read_events_end[5]   325244  info (trace)
> > ftrace_cpu_read_events_end[6]   392637  info (trace)
> > ftrace_cpu_read_events_end[7]   350623  info (trace)
> > ftrace_packet_before_tracing_starthelp_outline  0       info (analysis)
> > ftrace_setup_errorshelp_outline 0       error (trace)
> > fuchsia_invalid_event   0       error (analysis)
> > fuchsia_non_numeric_counters    0       error (analysis)
> > fuchsia_timestamp_overflow      0       error (analysis)
> > game_intervention_has_parse_errorshelp_outline  0       error (trace)
> > game_intervention_has_read_errorshelp_outline   0       error (trace)
> > gpu_counters_invalid_spec       0       error (analysis)
> > gpu_counters_missing_spec       0       error (analysis)
> > gpu_render_stage_parser_errors  0       error (analysis)
> > graphics_frame_event_parser_errors      0       info (analysis)
> > guess_trace_type_duration_ns    7654    info (analysis)
> > heap_graph_non_finalized_graph  0       error (trace)
> > heapprofd_missing_packet        0       error (trace)
> > heapprofd_non_finalized_profile 0       error (trace)
> > interned_data_tokenizer_errors  0       info (analysis)
> > invalid_clock_snapshots 0       error (analysis)
> > invalid_cpu_times       0       error (analysis)
> > json_display_time_unithelp_outline      0       info (trace)
> > json_parser_failure     0       error (trace)
> > json_tokenizer_failure  0       error (trace)
> > meminfo_unknown_keys    0       error (analysis)
> > memory_snapshot_parser_failure  0       error (analysis)
> > metatrace_overruns      0       error (trace)
> > mismatched_sched_switch_tids    11101   error (analysis)
> > misplaced_end_event     0       data_loss (analysis)
> > mm_unknown_type 0       error (analysis)
> > ninja_parse_errors      0       error (trace)
> > packages_list_has_parse_errors  0       error (trace)
> > packages_list_has_read_errors   0       error (trace)
> > parse_trace_duration_ns 1780589548      info (analysis)
> > perf_samples_skipped    0       info (trace)
> > perf_samples_skipped_dataloss   0       data_loss (trace)
> > power_rail_unknown_index        0       error (trace)
> > proc_stat_unknown_counters      0       error (analysis)
> > process_tracker_errors  0       error (analysis)
> > rss_stat_negative_size  0       info (analysis)
> > rss_stat_unknown_keys   0       error (analysis)
> > rss_stat_unknown_thread_for_mm_id       0       info (analysis)
> > sched_switch_out_of_order       0       error (analysis)
> > sched_waking_out_of_order       0       error (analysis)
> > slice_out_of_order      0       error (analysis)
> > sorter_push_event_out_of_orderhelp_outline      0       error (trace)
> > stackprofile_invalid_callstack_id       0       error (trace)
> > stackprofile_invalid_frame_id   0       error (trace)
> > stackprofile_invalid_mapping_id 0       error (trace)
> > stackprofile_invalid_string_id  0       error (trace)
> > stackprofile_parser_error       0       error (trace)
> > symbolization_tmp_build_id_not_foundhelp_outline        0       error (analysis)
> > systrace_parse_failure  19040   error (analysis)
> > task_state_invalid      0       error (analysis)
> > thread_time_in_state_out_of_order       0       error (analysis)
> > thread_time_in_state_unknown_cpu_freq   0       error (analysis)
> > tokenizer_skipped_packets       0       info (analysis)
> > traced_buf_abi_violations[0]    0       data_loss (trace)
> > traced_buf_abi_violations[1]    0       data_loss (trace)
> > traced_buf_buffer_size[0]       534773760       info (trace)
> > traced_buf_buffer_size[1]       2097152 info (trace)
> > traced_buf_bytes_overwritten[0] 0       info (trace)
> > traced_buf_bytes_overwritten[1] 0       info (trace)
> > traced_buf_bytes_read[0]        78929920        info (trace)
> > traced_buf_bytes_read[1]        425984  info (trace)
> > traced_buf_bytes_written[0]     78962688        info (trace)
> > traced_buf_bytes_written[1]     425984  info (trace)
> > traced_buf_chunks_committed_out_of_order[0]     0       info (trace)
> > traced_buf_chunks_committed_out_of_order[1]     0       info (trace)
> > traced_buf_chunks_discarded[0]  0       info (trace)
> > traced_buf_chunks_discarded[1]  0       info (trace)
> > traced_buf_chunks_overwritten[0]        0       info (trace)
> > traced_buf_chunks_overwritten[1]        0       info (trace)
> > traced_buf_chunks_read[0]       2428    info (trace)
> > traced_buf_chunks_read[1]       13      info (trace)
> > traced_buf_chunks_rewritten[0]  6       info (trace)
> > traced_buf_chunks_rewritten[1]  0       info (trace)
> > traced_buf_chunks_written[0]    2429    info (trace)
> > traced_buf_chunks_written[1]    13      info (trace)
> > traced_buf_padding_bytes_cleared[0]     0       info (trace)
> > traced_buf_padding_bytes_cleared[1]     0       info (trace)
> > traced_buf_padding_bytes_written[0]     0       info (trace)
> > traced_buf_padding_bytes_written[1]     0       info (trace)
> > traced_buf_patches_failed[0]    0       data_loss (trace)
> > traced_buf_patches_failed[1]    0       data_loss (trace)
> > traced_buf_patches_succeeded[0] 5633    info (trace)
> > traced_buf_patches_succeeded[1] 8       info (trace)
> > traced_buf_readaheads_failed[0] 115     info (trace)
> > traced_buf_readaheads_failed[1] 18      info (trace)
> > traced_buf_readaheads_succeeded[0]      2257    info (trace)
> > traced_buf_readaheads_succeeded[1]      6       info (trace)
> > traced_buf_trace_writer_packet_loss[0]  0       data_loss (trace)
> > traced_buf_trace_writer_packet_loss[1]  0       data_loss (trace)
> > traced_buf_write_wrap_count[0]  0       info (trace)
> > traced_buf_write_wrap_count[1]  0       info (trace)
> > traced_chunks_discarded 0       info (trace)
> > traced_data_sources_registered  16      info (trace)
> > traced_data_sources_seen        6       info (trace)
> > traced_final_flush_failed       0       data_loss (trace)
> > traced_final_flush_succeeded    0       info (trace)
> > traced_flushes_failed   0       data_loss (trace)
> > traced_flushes_requested        0       info (trace)
> > traced_flushes_succeeded        0       info (trace)
> > traced_patches_discarded        0       info (trace)
> > traced_producers_connected      3       info (trace)
> > traced_producers_seen   3       info (trace)
> > traced_total_buffers    2       info (trace)
> > traced_tracing_sessions 1       info (trace)
> > track_event_dropped_packets_outside_of_range_of_interesthelp_outline    0       info (analysis)
> > track_event_parser_errors       0       info (analysis)
> > track_event_thread_invalid_endhelp_outline      0       error (trace)
> > track_event_tokenizer_errors    0       info (analysis)
> > truncated_sys_write_durationhelp_outline        0       data_loss (analysis)
> > unknown_extension_fieldshelp_outline    0       error (trace)
> > vmstat_unknown_keys     0       error (analysis)
> > vulkan_allocations_invalid_string_id    0       error (trace)
> >
> > > --
> > > Regards
> > > Yafang
> >
> >
> 
> 
> -- 
> Regards
> Yafang

  reply	other threads:[~2023-02-10 18:10 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-20 11:27 [PATCH v2 0/7] task comm cleanups Yafang Shao
2021-11-20 11:27 ` [PATCH v2 1/7] fs/exec: replace strlcpy with strscpy_pad in __set_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 2/7] fs/exec: replace strncpy with strscpy_pad in __get_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 3/7] drivers/infiniband: replace open-coded string copy with get_task_comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 4/7] fs/binfmt_elf: " Yafang Shao
2021-11-29 16:01   ` Steven Rostedt
2021-11-30  3:01     ` Yafang Shao
2021-11-30 14:22       ` Steven Rostedt
2021-11-30 15:53         ` Yafang Shao
2021-11-20 11:27 ` [PATCH v2 5/7] samples/bpf/test_overhead_kprobe_kern: replace bpf_probe_read_kernel with bpf_probe_read_kernel_str to get task comm Yafang Shao
2021-11-20 11:27 ` [PATCH v2 6/7] tools/bpf/bpftool/skeleton: " Yafang Shao
2021-11-20 11:27 ` [PATCH v2 7/7] tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN Yafang Shao
2021-11-29 10:13   ` Sven Schnelle
2021-11-29 13:41     ` Yafang Shao
2021-11-29 14:21       ` Sven Schnelle
2021-11-29 14:32         ` David Hildenbrand
2021-11-29 14:38           ` Sven Schnelle
2021-11-29 15:33             ` Yafang Shao
2021-11-29 16:07               ` Steven Rostedt
2021-11-29 16:08                 ` Steven Rostedt
2021-11-29 15:28         ` Yafang Shao
2021-11-29 17:30     ` Steven Rostedt
2021-11-29 17:56       ` Sven Schnelle
2021-11-30  3:03       ` Yafang Shao
2021-11-30 14:23         ` Steven Rostedt
2021-11-30 15:46           ` Yafang Shao
2023-02-08 21:55   ` John Stultz
2023-02-09  0:10     ` Alexei Starovoitov
2023-02-09  0:54       ` John Stultz
2023-02-09  2:06         ` Mathieu Desnoyers
2023-02-09  6:20           ` Yafang Shao
2023-02-09 14:27             ` Kajetan Puchalski
2023-02-09 15:37               ` Yafang Shao
2023-02-10 18:09                 ` Kajetan Puchalski [this message]
2023-02-11 16:51                 ` Qais Yousef
2023-02-12  3:19                   ` Yafang Shao
2023-02-09  2:28         ` Steven Rostedt
2023-02-09  2:33           ` Steven Rostedt
2023-02-11 19:00             ` Steven Rostedt
2023-02-12  3:38               ` Yafang Shao
2023-02-12  3:44                 ` Steven Rostedt
2023-02-13 17:43                   ` Namhyung Kim
2023-02-13 17:46                     ` Mathieu Desnoyers

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