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From: Adrian Hunter <adrian.hunter@intel.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>, Andi Kleen <ak@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Namhyung Kim <namhyung@kernel.org>, Leo Yan <leo.yan@linaro.org>,
	Kan Liang <kan.liang@linux.intel.com>,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH V2 08/10] perf dlfilter: Add srcline() to perf_dlfilter_fns
Date: Sun, 27 Jun 2021 16:18:16 +0300	[thread overview]
Message-ID: <20210627131818.810-9-adrian.hunter@intel.com> (raw)
In-Reply-To: <20210627131818.810-1-adrian.hunter@intel.com>

Add a function, for use by dlfilters, to return source code file name and
line number.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/Documentation/perf-dlfilter.txt |  5 +++-
 tools/perf/util/dlfilter.c                 | 28 ++++++++++++++++++++++
 tools/perf/util/perf_dlfilter.h            |  4 +++-
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-dlfilter.txt b/tools/perf/Documentation/perf-dlfilter.txt
index bc4dba0995d8..df118ddcd7f4 100644
--- a/tools/perf/Documentation/perf-dlfilter.txt
+++ b/tools/perf/Documentation/perf-dlfilter.txt
@@ -125,7 +125,8 @@ struct perf_dlfilter_fns {
 	char **(*args)(void *ctx, int *dlargc);
 	__s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al);
 	const __u8 *(*insn)(void *ctx, __u32 *length);
-	void *(*reserved[123])(void *);
+	const char *(*srcline)(void *ctx, __u32 *line_number);
+	void *(*reserved[122])(void *);
 };
 ----
 
@@ -140,6 +141,8 @@ before calling. Returns 0 on success, -1 otherwise.
 
 'insn' returns instruction bytes and length.
 
+'srcline' return source file name and line number.
+
 The perf_dlfilter_al structure
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c
index 79a899255c01..f4ce1a80bddc 100644
--- a/tools/perf/util/dlfilter.c
+++ b/tools/perf/util/dlfilter.c
@@ -19,6 +19,7 @@
 #include "thread.h"
 #include "trace-event.h"
 #include "symbol.h"
+#include "srcline.h"
 #include "dlfilter.h"
 #include "perf_dlfilter.h"
 
@@ -208,12 +209,39 @@ static const __u8 *dlfilter__insn(void *ctx, __u32 *len)
 	return (__u8 *)d->sample->insn;
 }
 
+static const char *dlfilter__srcline(void *ctx, __u32 *line_no)
+{
+	struct dlfilter *d = (struct dlfilter *)ctx;
+	struct addr_location *al;
+	unsigned int line = 0;
+	char *srcfile = NULL;
+	struct map *map;
+	u64 addr;
+
+	if (!d->ctx_valid || !line_no)
+		return NULL;
+
+	al = get_al(d);
+	if (!al)
+		return NULL;
+
+	map = al->map;
+	addr = al->addr;
+
+	if (map && map->dso)
+		srcfile = get_srcline_split(map->dso, map__rip_2objdump(map, addr), &line);
+
+	*line_no = line;
+	return srcfile;
+}
+
 static const struct perf_dlfilter_fns perf_dlfilter_fns = {
 	.resolve_ip      = dlfilter__resolve_ip,
 	.resolve_addr    = dlfilter__resolve_addr,
 	.args            = dlfilter__args,
 	.resolve_address = dlfilter__resolve_address,
 	.insn            = dlfilter__insn,
+	.srcline         = dlfilter__srcline,
 };
 
 static char *find_dlfilter(const char *file)
diff --git a/tools/perf/util/perf_dlfilter.h b/tools/perf/util/perf_dlfilter.h
index 763c5af3c5f7..b989918056e2 100644
--- a/tools/perf/util/perf_dlfilter.h
+++ b/tools/perf/util/perf_dlfilter.h
@@ -99,8 +99,10 @@ struct perf_dlfilter_fns {
 	__s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al);
 	/* Return instruction bytes and length */
 	const __u8 *(*insn)(void *ctx, __u32 *length);
+	/* Return source file name and line number */
+	const char *(*srcline)(void *ctx, __u32 *line_number);
 	/* Reserved */
-	void *(*reserved[123])(void *);
+	void *(*reserved[122])(void *);
 };
 
 /*
-- 
2.17.1


  parent reply	other threads:[~2021-06-27 13:18 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-27 13:18 [PATCH V2 00/10] perf script: Add API for filtering via dynamically loaded shared object Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 01/10] " Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 02/10] perf script: Add dlfilter__filter_event_early() Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 03/10] perf script: Add option to list dlfilters Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 04/10] perf script: Add option to pass arguments to dlfilters Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 05/10] perf build: Install perf_dlfilter.h Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 06/10] perf dlfilter: Add resolve_address() to perf_dlfilter_fns Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 07/10] perf dlfilter: Add insn() " Adrian Hunter
2021-06-27 13:18 ` Adrian Hunter [this message]
2021-06-27 13:18 ` [PATCH V2 09/10] perf dlfilter: Add attr() " Adrian Hunter
2021-06-27 13:18 ` [PATCH V2 10/10] perf dlfilter: Add object_code() " Adrian Hunter
2021-06-27 16:13 ` [PATCH V2 00/10] perf script: Add API for filtering via dynamically loaded shared object Andi Kleen
2021-06-28  7:23   ` Adrian Hunter
2021-06-28 14:57     ` Andi Kleen
2021-06-28 19:30       ` Adrian Hunter
2021-06-29 19:28 ` Namhyung Kim
2021-07-01 17:40 ` Arnaldo Carvalho de Melo

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