linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Masami Hiramatsu <mhiramat@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
	Beau Belgrave <beaub@linux.microsoft.com>
Cc: linux-kernel@vger.kernel.org,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Tom Zanussi <zanussi@kernel.org>
Subject: [PATCH 5/5] tools/perf: Add __rel_loc support
Date: Mon, 15 Nov 2021 19:20:45 +0900	[thread overview]
Message-ID: <163697164517.131454.6873374426830650165.stgit@devnote2> (raw)
In-Reply-To: <163697159970.131454.2661507704362599471.stgit@devnote2>

Add new __rel_loc dynamic data location attribute support.
This type attribute is similar to the __data_loc but records
the offset from the field itself.
The libtraceevent adds TEP_FIELD_IS_REL_DYNAMIC to the
field->flags with TEP_FIELD_IS_DYNAMIC for __rel_loc.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 tools/perf/builtin-trace.c                         |    2 ++
 tools/perf/util/data-convert-bt.c                  |    2 ++
 tools/perf/util/evsel.c                            |    2 ++
 tools/perf/util/python.c                           |    2 ++
 .../perf/util/scripting-engines/trace-event-perl.c |    2 ++
 .../util/scripting-engines/trace-event-python.c    |    2 ++
 tools/perf/util/sort.c                             |    2 ++
 7 files changed, 14 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 2bf21194c7b3..79f76eea0fcc 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2722,6 +2722,8 @@ static size_t trace__fprintf_tp_fields(struct trace *trace, struct evsel *evsel,
 				offset = format_field__intval(field, sample, evsel->needs_swap);
 				syscall_arg.len = offset >> 16;
 				offset &= 0xffff;
+				if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+					offset += field->offset + field->size;
 			}
 
 			val = (uintptr_t)(sample->raw_data + offset);
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index aa862a26d95c..4406f82abb64 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -318,6 +318,8 @@ static int add_tracepoint_field_value(struct ctf_writer *cw,
 		offset = tmp_val;
 		len = offset >> 16;
 		offset &= 0xffff;
+		if (flags & TEP_FIELD_IS_REL_DYNAMIC)
+			offset += fmtf->offset + fmtf->size;
 	}
 
 	if (flags & TEP_FIELD_IS_ARRAY) {
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index dbfeceb2546c..0dca46cf41a8 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2597,6 +2597,8 @@ void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char
 	if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 		offset = *(int *)(sample->raw_data + field->offset);
 		offset &= 0xffff;
+		if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+			offset += field->offset + field->size;
 	}
 
 	return sample->raw_data + offset;
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 8feef3a05af7..f0dea973b395 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -416,6 +416,8 @@ tracepoint_field(struct pyrf_event *pe, struct tep_format_field *field)
 			offset  = val;
 			len     = offset >> 16;
 			offset &= 0xffff;
+			if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+				offset += field->offset + field->size;
 		}
 		if (field->flags & TEP_FIELD_IS_STRING &&
 		    is_printable_array(data + offset, len)) {
diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index 32a721b3e9a5..c535ed3b224e 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -392,6 +392,8 @@ static void perl_process_tracepoint(struct perf_sample *sample,
 			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 				offset = *(int *)(data + field->offset);
 				offset &= 0xffff;
+				if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+					offset += field->offset + field->size;
 			} else
 				offset = field->offset;
 			XPUSHs(sv_2mortal(newSVpv((char *)data + offset, 0)));
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index c0c010350bc2..46344446f61c 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -942,6 +942,8 @@ static void python_process_tracepoint(struct perf_sample *sample,
 				offset  = val;
 				len     = offset >> 16;
 				offset &= 0xffff;
+				if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+					offset += field->offset + field->size;
 			}
 			if (field->flags & TEP_FIELD_IS_STRING &&
 			    is_printable_array(data + offset, len)) {
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 568a88c001c6..cffe2c484923 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -2385,6 +2385,8 @@ static int64_t __sort__hde_cmp(struct perf_hpp_fmt *fmt,
 		tep_read_number_field(field, a->raw_data, &dyn);
 		offset = dyn & 0xffff;
 		size = (dyn >> 16) & 0xffff;
+		if (field->flags & TEP_FIELD_IS_REL_DYNAMIC)
+			offset += field->offset + field->size;
 
 		/* record max width for output */
 		if (size > hde->dynamic_len)


      parent reply	other threads:[~2021-11-15 10:21 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-15 10:19 [PATCH 0/5] tracing: Add __rel_loc support Masami Hiramatsu
2021-11-15 10:20 ` [PATCH 1/5] tracing: Support __rel_loc relative dynamic data location attribute Masami Hiramatsu
2021-11-15 10:20 ` [PATCH 2/5] tracing: Add '__rel_loc' using trace event macros Masami Hiramatsu
2021-11-15 10:20 ` [PATCH 3/5] samples/trace_event: Add '__rel_loc' using sample event Masami Hiramatsu
2021-11-15 10:20 ` [PATCH 4/5] libtraceevent: Add __rel_loc relative location attribute support Masami Hiramatsu
2021-11-16 22:23   ` Steven Rostedt
2021-11-17 14:33     ` Masami Hiramatsu
2021-11-17 15:14       ` Steven Rostedt
2021-11-22  5:05     ` Masami Hiramatsu
2021-11-22 16:25       ` Steven Rostedt
2021-11-23 12:07         ` Masami Hiramatsu
2021-11-15 10:20 ` Masami Hiramatsu [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=163697164517.131454.6873374426830650165.stgit@devnote2 \
    --to=mhiramat@kernel.org \
    --cc=beaub@linux.microsoft.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=namhyung@kernel.org \
    --cc=rostedt@goodmis.org \
    --cc=zanussi@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).