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* [PATCH 0/5] perf tools: Add dlfilter test
@ 2021-08-10 11:48 Adrian Hunter
  2021-08-10 11:48 ` [PATCH 1/5] perf script: Fix unnecessary machine_resolve() Adrian Hunter
                   ` (4 more replies)
  0 siblings, 5 replies; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

Hi

Here are some minor fixes / improvements to dlfilters and a new perf test
for the dlfilter C API.


Adrian Hunter (5):
      perf script: Fix unnecessary machine_resolve()
      perf script: Fix --list-dlfilters documentation
      perf tools: Amend dlfilter documentation wrt library dependencies
      perf tools: Move perf_dlfilters.h in the source tree
      perf tools: Add dlfilter test

 tools/perf/Documentation/perf-dlfilter.txt        |   8 +
 tools/perf/Documentation/perf-script.txt          |   2 +-
 tools/perf/Makefile.perf                          |  17 +-
 tools/perf/builtin-script.c                       |   2 +-
 tools/perf/dlfilters/dlfilter-test-api-v0.c       | 336 ++++++++++++++++++
 tools/perf/{util => include/perf}/perf_dlfilter.h |   0
 tools/perf/tests/Build                            |   1 +
 tools/perf/tests/builtin-test.c                   |   4 +
 tools/perf/tests/dlfilter-test.c                  | 409 ++++++++++++++++++++++
 tools/perf/tests/tests.h                          |   1 +
 tools/perf/util/dlfilter.c                        |   6 +-
 tools/perf/util/dlfilter.h                        |   2 +
 12 files changed, 781 insertions(+), 7 deletions(-)
 create mode 100644 tools/perf/dlfilters/dlfilter-test-api-v0.c
 rename tools/perf/{util => include/perf}/perf_dlfilter.h (100%)
 create mode 100644 tools/perf/tests/dlfilter-test.c


Regards
Adrian

^ permalink raw reply	[flat|nested] 13+ messages in thread

* [PATCH 1/5] perf script: Fix unnecessary machine_resolve()
  2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
@ 2021-08-10 11:48 ` Adrian Hunter
  2021-08-10 18:25   ` Arnaldo Carvalho de Melo
  2021-08-10 11:48 ` [PATCH 2/5] perf script: Fix --list-dlfilters documentation Adrian Hunter
                   ` (3 subsequent siblings)
  4 siblings, 1 reply; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

machine_resolve() may have already been called. Test for that to avoid
calling it again unnecessarily.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/builtin-script.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e2e165b53499..f469354155f1 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2212,7 +2212,7 @@ static int process_sample_event(struct perf_tool *tool,
 	if (filter_cpu(sample))
 		goto out_put;
 
-	if (machine__resolve(machine, &al, sample) < 0) {
+	if (!al.thread && machine__resolve(machine, &al, sample) < 0) {
 		pr_err("problem processing %d event, skipping it.\n",
 		       event->header.type);
 		ret = -1;
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [PATCH 2/5] perf script: Fix --list-dlfilters documentation
  2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
  2021-08-10 11:48 ` [PATCH 1/5] perf script: Fix unnecessary machine_resolve() Adrian Hunter
@ 2021-08-10 11:48 ` Adrian Hunter
  2021-08-10 18:28   ` Arnaldo Carvalho de Melo
  2021-08-10 11:48 ` [PATCH 3/5] perf tools: Amend dlfilter documentation wrt library dependencies Adrian Hunter
                   ` (2 subsequent siblings)
  4 siblings, 1 reply; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

The option --list-dlfilters does use a string value.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/Documentation/perf-script.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index aa3a0b2c29a2..c80515243560 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -106,7 +106,7 @@ OPTIONS
 	Pass 'arg' as an argument to the dlfilter. --dlarg may be repeated
 	to add more arguments.
 
---list-dlfilters=::
+--list-dlfilters::
         Display a list of available dlfilters. Use with option -v (must come
         before option --list-dlfilters) to show long descriptions.
 
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [PATCH 3/5] perf tools: Amend dlfilter documentation wrt library dependencies
  2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
  2021-08-10 11:48 ` [PATCH 1/5] perf script: Fix unnecessary machine_resolve() Adrian Hunter
  2021-08-10 11:48 ` [PATCH 2/5] perf script: Fix --list-dlfilters documentation Adrian Hunter
@ 2021-08-10 11:48 ` Adrian Hunter
  2021-08-10 11:48 ` [PATCH 4/5] perf tools: Move perf_dlfilters.h in the source tree Adrian Hunter
  2021-08-10 11:48 ` [PATCH 5/5] perf tools: Add dlfilter test Adrian Hunter
  4 siblings, 0 replies; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

Like all locally-built programs, dlfilters may need to be re-built if
shared libraries they use change. Also there may be unexpected results
if the dfilter uses different versions of the shared libraries that perf
uses.

Note those things in the documentation.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/Documentation/perf-dlfilter.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/Documentation/perf-dlfilter.txt b/tools/perf/Documentation/perf-dlfilter.txt
index 02842cb4cf90..322510d3ec0c 100644
--- a/tools/perf/Documentation/perf-dlfilter.txt
+++ b/tools/perf/Documentation/perf-dlfilter.txt
@@ -246,6 +246,14 @@ To use the filter with perf script:
 
 	perf script --dlfilter dlfilter-example.so
 
+NOTES
+-----
+
+The dlfilter .so file will be dependent on shared libraries. If those change,
+it may be necessary to rebuild the .so. Also there may be unexpected results
+if the .so uses different versions of the shared libraries that perf uses.
+Versions can be checked using the ldd command.
+
 SEE ALSO
 --------
 linkperf:perf-script[1]
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [PATCH 4/5] perf tools: Move perf_dlfilters.h in the source tree
  2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
                   ` (2 preceding siblings ...)
  2021-08-10 11:48 ` [PATCH 3/5] perf tools: Amend dlfilter documentation wrt library dependencies Adrian Hunter
@ 2021-08-10 11:48 ` Adrian Hunter
  2021-08-10 11:48 ` [PATCH 5/5] perf tools: Add dlfilter test Adrian Hunter
  4 siblings, 0 replies; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

Move perf_dlfilters.h in the source tree so that it will be found when
building dlfilters as part of the perf build.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/Makefile.perf                          | 2 +-
 tools/perf/{util => include/perf}/perf_dlfilter.h | 0
 tools/perf/util/dlfilter.c                        | 2 +-
 3 files changed, 2 insertions(+), 2 deletions(-)
 rename tools/perf/{util => include/perf}/perf_dlfilter.h (100%)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 77e7f18c0bd0..6dafde69d5e3 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -925,7 +925,7 @@ install-tools: all install-gtk
 		$(INSTALL) $(OUTPUT)perf '$(DESTDIR_SQ)$(bindir_SQ)'; \
 		$(LN) '$(DESTDIR_SQ)$(bindir_SQ)/perf' '$(DESTDIR_SQ)$(bindir_SQ)/trace'; \
 		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(includedir_SQ)/perf'; \
-		$(INSTALL) util/perf_dlfilter.h -t '$(DESTDIR_SQ)$(includedir_SQ)/perf'
+		$(INSTALL) -m 644 include/perf/perf_dlfilter.h -t '$(DESTDIR_SQ)$(includedir_SQ)/perf'
 ifndef NO_PERF_READ_VDSO32
 	$(call QUIET_INSTALL, perf-read-vdso32) \
 		$(INSTALL) $(OUTPUT)perf-read-vdso32 '$(DESTDIR_SQ)$(bindir_SQ)';
diff --git a/tools/perf/util/perf_dlfilter.h b/tools/perf/include/perf/perf_dlfilter.h
similarity index 100%
rename from tools/perf/util/perf_dlfilter.h
rename to tools/perf/include/perf/perf_dlfilter.h
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c
index ca33fbc5efde..7d11ce76157c 100644
--- a/tools/perf/util/dlfilter.c
+++ b/tools/perf/util/dlfilter.c
@@ -21,7 +21,7 @@
 #include "symbol.h"
 #include "srcline.h"
 #include "dlfilter.h"
-#include "perf_dlfilter.h"
+#include "../include/perf/perf_dlfilter.h"
 
 static void al_to_d_al(struct addr_location *al, struct perf_dlfilter_al *d_al)
 {
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* [PATCH 5/5] perf tools: Add dlfilter test
  2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
                   ` (3 preceding siblings ...)
  2021-08-10 11:48 ` [PATCH 4/5] perf tools: Move perf_dlfilters.h in the source tree Adrian Hunter
@ 2021-08-10 11:48 ` Adrian Hunter
  2021-08-10 18:32   ` Arnaldo Carvalho de Melo
  4 siblings, 1 reply; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 11:48 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

Add a perf test to test the dlfilter C API.

A perf.data file is synthesized and then processed by perf script with a
dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to
provide a dso to match the synthesized perf.data file.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/Makefile.perf                    |  15 +-
 tools/perf/dlfilters/dlfilter-test-api-v0.c | 336 ++++++++++++++++
 tools/perf/tests/Build                      |   1 +
 tools/perf/tests/builtin-test.c             |   4 +
 tools/perf/tests/dlfilter-test.c            | 409 ++++++++++++++++++++
 tools/perf/tests/tests.h                    |   1 +
 tools/perf/util/dlfilter.c                  |   4 +-
 tools/perf/util/dlfilter.h                  |   2 +
 8 files changed, 769 insertions(+), 3 deletions(-)
 create mode 100644 tools/perf/dlfilters/dlfilter-test-api-v0.c
 create mode 100644 tools/perf/tests/dlfilter-test.c

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 6dafde69d5e3..24623599113d 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -360,8 +360,11 @@ ifndef NO_JVMTI
 PROGRAMS += $(OUTPUT)$(LIBJVMTI)
 endif
 
+DLFILTERS := dlfilter-test-api-v0.so
+DLFILTERS := $(patsubst %,$(OUTPUT)dlfilters/%,$(DLFILTERS))
+
 # what 'all' will build and 'install' will install, in perfexecdir
-ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS)
+ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS) $(DLFILTERS)
 
 # what 'all' will build but not install in perfexecdir
 OTHER_PROGRAMS = $(OUTPUT)perf
@@ -780,6 +783,13 @@ $(OUTPUT)perf-read-vdsox32: perf-read-vdso.c util/find-map.c
 	$(QUIET_CC)$(CC) -mx32 $(filter -static,$(LDFLAGS)) -Wall -Werror -o $@ perf-read-vdso.c
 endif
 
+$(OUTPUT)dlfilters/%.o: dlfilters/%.c include/perf/perf_dlfilter.h
+	$(Q)$(MKDIR) -p $(OUTPUT)dlfilters
+	$(QUIET_CC)$(CC) -c -Iinclude -o $@ -fpic $<
+
+$(OUTPUT)dlfilters/%.so: $(OUTPUT)dlfilters/%.o
+	$(QUIET_LINK)$(CC) -shared -o $@ $<
+
 ifndef NO_JVMTI
 LIBJVMTI_IN := $(OUTPUT)jvmti/jvmti-in.o
 
@@ -978,6 +988,9 @@ ifndef NO_LIBPYTHON
 		$(INSTALL) scripts/python/*.py -m 644 -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python'; \
 		$(INSTALL) scripts/python/bin/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python/bin'
 endif
+	$(call QUIET_INSTALL, dlfilters) \
+		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/dlfilters'; \
+		$(INSTALL) $(DLFILTERS) '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/dlfilters';
 	$(call QUIET_INSTALL, perf_completion-script) \
 		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(sysconfdir_SQ)/bash_completion.d'; \
 		$(INSTALL) perf-completion.sh '$(DESTDIR_SQ)$(sysconfdir_SQ)/bash_completion.d/perf'
diff --git a/tools/perf/dlfilters/dlfilter-test-api-v0.c b/tools/perf/dlfilters/dlfilter-test-api-v0.c
new file mode 100644
index 000000000000..401656badef8
--- /dev/null
+++ b/tools/perf/dlfilters/dlfilter-test-api-v0.c
@@ -0,0 +1,336 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dlfilter-test-api-v0.c: test original (v0) API for perf --dlfilter shared object
+ * Copyright (c) 2021, Intel Corporation.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+/*
+ * Copy original (v0) API instead of including current API
+ */
+#include <linux/perf_event.h>
+#include <linux/types.h>
+
+/* Definitions for perf_dlfilter_sample flags */
+enum {
+	PERF_DLFILTER_FLAG_BRANCH	= 1ULL << 0,
+	PERF_DLFILTER_FLAG_CALL		= 1ULL << 1,
+	PERF_DLFILTER_FLAG_RETURN	= 1ULL << 2,
+	PERF_DLFILTER_FLAG_CONDITIONAL	= 1ULL << 3,
+	PERF_DLFILTER_FLAG_SYSCALLRET	= 1ULL << 4,
+	PERF_DLFILTER_FLAG_ASYNC	= 1ULL << 5,
+	PERF_DLFILTER_FLAG_INTERRUPT	= 1ULL << 6,
+	PERF_DLFILTER_FLAG_TX_ABORT	= 1ULL << 7,
+	PERF_DLFILTER_FLAG_TRACE_BEGIN	= 1ULL << 8,
+	PERF_DLFILTER_FLAG_TRACE_END	= 1ULL << 9,
+	PERF_DLFILTER_FLAG_IN_TX	= 1ULL << 10,
+	PERF_DLFILTER_FLAG_VMENTRY	= 1ULL << 11,
+	PERF_DLFILTER_FLAG_VMEXIT	= 1ULL << 12,
+};
+
+/*
+ * perf sample event information (as per perf script and <linux/perf_event.h>)
+ */
+struct perf_dlfilter_sample {
+	__u32 size; /* Size of this structure (for compatibility checking) */
+	__u16 ins_lat;		/* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */
+	__u16 p_stage_cyc;	/* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */
+	__u64 ip;
+	__s32 pid;
+	__s32 tid;
+	__u64 time;
+	__u64 addr;
+	__u64 id;
+	__u64 stream_id;
+	__u64 period;
+	__u64 weight;		/* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */
+	__u64 transaction;	/* Refer PERF_SAMPLE_TRANSACTION in <linux/perf_event.h> */
+	__u64 insn_cnt;	/* For instructions-per-cycle (IPC) */
+	__u64 cyc_cnt;		/* For instructions-per-cycle (IPC) */
+	__s32 cpu;
+	__u32 flags;		/* Refer PERF_DLFILTER_FLAG_* above */
+	__u64 data_src;		/* Refer PERF_SAMPLE_DATA_SRC in <linux/perf_event.h> */
+	__u64 phys_addr;	/* Refer PERF_SAMPLE_PHYS_ADDR in <linux/perf_event.h> */
+	__u64 data_page_size;	/* Refer PERF_SAMPLE_DATA_PAGE_SIZE in <linux/perf_event.h> */
+	__u64 code_page_size;	/* Refer PERF_SAMPLE_CODE_PAGE_SIZE in <linux/perf_event.h> */
+	__u64 cgroup;		/* Refer PERF_SAMPLE_CGROUP in <linux/perf_event.h> */
+	__u8  cpumode;		/* Refer CPUMODE_MASK etc in <linux/perf_event.h> */
+	__u8  addr_correlates_sym; /* True => resolve_addr() can be called */
+	__u16 misc;		/* Refer perf_event_header in <linux/perf_event.h> */
+	__u32 raw_size;		/* Refer PERF_SAMPLE_RAW in <linux/perf_event.h> */
+	const void *raw_data;	/* Refer PERF_SAMPLE_RAW in <linux/perf_event.h> */
+	__u64 brstack_nr;	/* Number of brstack entries */
+	const struct perf_branch_entry *brstack; /* Refer <linux/perf_event.h> */
+	__u64 raw_callchain_nr;	/* Number of raw_callchain entries */
+	const __u64 *raw_callchain; /* Refer <linux/perf_event.h> */
+	const char *event;
+};
+
+/*
+ * Address location (as per perf script)
+ */
+struct perf_dlfilter_al {
+	__u32 size; /* Size of this structure (for compatibility checking) */
+	__u32 symoff;
+	const char *sym;
+	__u64 addr; /* Mapped address (from dso) */
+	__u64 sym_start;
+	__u64 sym_end;
+	const char *dso;
+	__u8  sym_binding; /* STB_LOCAL, STB_GLOBAL or STB_WEAK, refer <elf.h> */
+	__u8  is_64_bit; /* Only valid if dso is not NULL */
+	__u8  is_kernel_ip; /* True if in kernel space */
+	__u32 buildid_size;
+	__u8 *buildid;
+	/* Below members are only populated by resolve_ip() */
+	__u8 filtered; /* True if this sample event will be filtered out */
+	const char *comm;
+};
+
+struct perf_dlfilter_fns {
+	/* Return information about ip */
+	const struct perf_dlfilter_al *(*resolve_ip)(void *ctx);
+	/* Return information about addr (if addr_correlates_sym) */
+	const struct perf_dlfilter_al *(*resolve_addr)(void *ctx);
+	/* Return arguments from --dlarg option */
+	char **(*args)(void *ctx, int *dlargc);
+	/*
+	 * Return information about address (al->size must be set before
+	 * calling). Returns 0 on success, -1 otherwise.
+	 */
+	__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);
+	/* Return perf_event_attr, refer <linux/perf_event.h> */
+	struct perf_event_attr *(*attr)(void *ctx);
+	/* Read object code, return numbers of bytes read */
+	__s32 (*object_code)(void *ctx, __u64 ip, void *buf, __u32 len);
+	/* Reserved */
+	void *(*reserved[120])(void *);
+};
+
+const struct perf_dlfilter_fns perf_dlfilter_fns;
+
+static int verbose;
+
+#define pr_debug(fmt, ...) do { \
+		if (verbose) \
+			fprintf(stderr, fmt, ##__VA_ARGS__); \
+	} while (0)
+
+static int test_fail(const char *msg)
+{
+	pr_debug("%s\n", msg);
+	return -1;
+}
+
+#define CHECK(x) do { \
+		if (!(x)) \
+			return test_fail("Check '" #x "' failed\n"); \
+	} while (0)
+
+struct filter_data {
+	__u64 ip;
+	__u64 addr;
+	int do_early;
+	int early_filter_cnt;
+	int filter_cnt;
+};
+
+static struct filter_data *filt_dat;
+
+int start(void **data, void *ctx)
+{
+	int dlargc;
+	char **dlargv;
+	struct filter_data *d;
+	static bool called;
+
+	verbose = 1;
+
+	CHECK(!filt_dat && !called);
+	called = true;
+
+	d = calloc(1, sizeof(*d));
+	if (!d)
+		test_fail("Failed to allocate memory");
+	filt_dat = d;
+	*data = d;
+
+	dlargv = perf_dlfilter_fns.args(ctx, &dlargc);
+
+	CHECK(dlargc == 6);
+	CHECK(!strcmp(dlargv[0], "first"));
+	verbose = strtol(dlargv[1], NULL, 0);
+	d->ip = strtoull(dlargv[2], NULL, 0);
+	d->addr = strtoull(dlargv[3], NULL, 0);
+	d->do_early = strtol(dlargv[4], NULL, 0);
+	CHECK(!strcmp(dlargv[5], "last"));
+
+	pr_debug("%s API\n", __func__);
+
+	return 0;
+}
+
+#define CHECK_SAMPLE(x) do { \
+		if (sample->x != expected.x) \
+			return test_fail("'" #x "' not expected value\n"); \
+	} while (0)
+
+static int check_sample(struct filter_data *d, const struct perf_dlfilter_sample *sample)
+{
+	struct perf_dlfilter_sample expected = {
+		.ip		= d->ip,
+		.pid		= 12345,
+		.tid		= 12346,
+		.time		= 1234567890,
+		.addr		= d->addr,
+		.id		= 99,
+		.stream_id	= 101,
+		.period		= 543212345,
+		.cpu		= 31,
+		.cpumode	= PERF_RECORD_MISC_USER,
+		.addr_correlates_sym = 1,
+		.misc		= PERF_RECORD_MISC_USER,
+	};
+
+	CHECK(sample->size >= sizeof(struct perf_dlfilter_sample));
+
+	CHECK_SAMPLE(ip);
+	CHECK_SAMPLE(pid);
+	CHECK_SAMPLE(tid);
+	CHECK_SAMPLE(time);
+	CHECK_SAMPLE(addr);
+	CHECK_SAMPLE(id);
+	CHECK_SAMPLE(stream_id);
+	CHECK_SAMPLE(period);
+	CHECK_SAMPLE(cpu);
+	CHECK_SAMPLE(cpumode);
+	CHECK_SAMPLE(addr_correlates_sym);
+	CHECK_SAMPLE(misc);
+
+	CHECK(!sample->raw_data);
+	CHECK_SAMPLE(brstack_nr);
+	CHECK(!sample->brstack);
+	CHECK_SAMPLE(raw_callchain_nr);
+	CHECK(!sample->raw_callchain);
+
+#define EVENT_NAME "branches:"
+	CHECK(!strncmp(sample->event, EVENT_NAME, strlen(EVENT_NAME)));
+
+	return 0;
+}
+
+static int check_al(void *ctx)
+{
+	const struct perf_dlfilter_al *al;
+
+	al = perf_dlfilter_fns.resolve_ip(ctx);
+	if (!al)
+		return test_fail("resolve_ip() failed");
+
+	CHECK(al->sym && !strcmp("foo", al->sym));
+	CHECK(!al->symoff);
+
+	return 0;
+}
+
+static int check_addr_al(void *ctx)
+{
+	const struct perf_dlfilter_al *addr_al;
+
+	addr_al = perf_dlfilter_fns.resolve_addr(ctx);
+	if (!addr_al)
+		return test_fail("resolve_addr() failed");
+
+	CHECK(addr_al->sym && !strcmp("bar", addr_al->sym));
+	CHECK(!addr_al->symoff);
+
+	return 0;
+}
+
+static int check_attr(void *ctx)
+{
+	struct perf_event_attr *attr = perf_dlfilter_fns.attr(ctx);
+
+	CHECK(attr);
+	CHECK(attr->type == PERF_TYPE_HARDWARE);
+	CHECK(attr->config == PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
+
+	return 0;
+}
+
+static int do_checks(void *data, const struct perf_dlfilter_sample *sample, void *ctx, bool early)
+{
+	struct filter_data *d = data;
+
+	CHECK(data && filt_dat == data);
+
+	if (early) {
+		CHECK(!d->early_filter_cnt);
+		d->early_filter_cnt += 1;
+	} else {
+		CHECK(!d->filter_cnt);
+		CHECK(d->early_filter_cnt);
+		CHECK(d->do_early != 2);
+		d->filter_cnt += 1;
+	}
+
+	if (check_sample(data, sample))
+		return -1;
+
+	if (check_attr(ctx))
+		return -1;
+
+	if (early && !d->do_early)
+		return 0;
+
+	if (check_al(ctx) || check_addr_al(ctx))
+		return -1;
+
+	if (early)
+		return d->do_early == 2;
+
+	return 1;
+}
+
+int filter_event_early(void *data, const struct perf_dlfilter_sample *sample, void *ctx)
+{
+	pr_debug("%s API\n", __func__);
+
+	return do_checks(data, sample, ctx, true);
+}
+
+int filter_event(void *data, const struct perf_dlfilter_sample *sample, void *ctx)
+{
+	struct filter_data *d = data;
+
+	pr_debug("%s API\n", __func__);
+
+	return do_checks(data, sample, ctx, false);
+}
+
+int stop(void *data, void *ctx)
+{
+	static bool called;
+
+	pr_debug("%s API\n", __func__);
+
+	CHECK(data && filt_dat == data && !called);
+	called = true;
+
+	free(data);
+	filt_dat = NULL;
+	return 0;
+}
+
+const char *filter_description(const char **long_description)
+{
+	*long_description = "Filter used by the 'dlfilter C API' perf test";
+	return "dlfilter to test v0 C API";
+}
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index 650aec19d490..803ca426f8e6 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -64,6 +64,7 @@ perf-y += parse-metric.o
 perf-y += pe-file-parsing.o
 perf-y += expand-cgroup.o
 perf-y += perf-time-to-tsc.o
+perf-y += dlfilter-test.o
 
 $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
 	$(call rule_mkdir)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 5e6242576236..fb5846db02e1 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -360,6 +360,10 @@ static struct test generic_tests[] = {
 		.func = test__perf_time_to_tsc,
 		.is_supported = test__tsc_is_supported,
 	},
+	{
+		.desc = "dlfilter C API",
+		.func = test__dlfilter,
+	},
 	{
 		.func = NULL,
 	},
diff --git a/tools/perf/tests/dlfilter-test.c b/tools/perf/tests/dlfilter-test.c
new file mode 100644
index 000000000000..7fadf6e12f99
--- /dev/null
+++ b/tools/perf/tests/dlfilter-test.c
@@ -0,0 +1,409 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test dlfilter C API. A perf.data file is synthesized and then processed
+ * by perf script with a dlfilter named dlfilter-test-api-v0.so. Also a C file
+ * is compiled to provide a dso to match the synthesized perf.data file.
+ */
+
+#include <linux/compiler.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/perf_event.h>
+#include <internal/lib.h>
+#include <subcmd/exec-cmd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <string.h>
+#include <errno.h>
+#include "debug.h"
+#include "tool.h"
+#include "event.h"
+#include "header.h"
+#include "machine.h"
+#include "dso.h"
+#include "map.h"
+#include "symbol.h"
+#include "synthetic-events.h"
+#include "util.h"
+#include "archinsn.h"
+#include "dlfilter.h"
+#include "tests.h"
+
+#define MAP_START 0x400000
+
+struct test_data {
+	struct perf_tool tool;
+	struct machine *machine;
+	int fd;
+	u64 foo;
+	u64 bar;
+	u64 ip;
+	u64 addr;
+	char perf[PATH_MAX];
+	char perf_data_file_name[PATH_MAX];
+	char c_file_name[PATH_MAX];
+	char prog_file_name[PATH_MAX];
+	char dlfilters[PATH_MAX];
+};
+
+static int test_result(const char *msg, int ret)
+{
+	pr_debug("%s\n", msg);
+	return ret;
+}
+
+static int process(struct perf_tool *tool, union perf_event *event,
+		   struct perf_sample *sample __maybe_unused,
+		   struct machine *machine __maybe_unused)
+{
+	struct test_data *td = container_of(tool, struct test_data, tool);
+	int fd = td->fd;
+
+	if (writen(fd, event, event->header.size) != event->header.size)
+		return -1;
+
+	return 0;
+}
+
+#define MAXCMD 4096
+#define REDIRECT_TO_DEV_NULL " >/dev/null 2>&1"
+
+static __printf(1, 2) int system_cmd(const char *fmt, ...)
+{
+	char cmd[MAXCMD + sizeof(REDIRECT_TO_DEV_NULL)];
+	int ret;
+
+	va_list args;
+
+	va_start(args, fmt);
+	ret = vsnprintf(cmd, MAXCMD, fmt, args);
+	va_end(args);
+
+	if (ret <= 0 || ret >= MAXCMD)
+		return -1;
+
+	if (!verbose)
+		strcat(cmd, REDIRECT_TO_DEV_NULL);
+
+	pr_debug("Command: %s\n", cmd);
+	ret = system(cmd);
+	if (ret)
+		pr_debug("Failed with return value %d\n", ret);
+
+	return ret;
+}
+
+static bool have_gcc(void)
+{
+	pr_debug("Checking for gcc\n");
+	return !system_cmd("gcc --version");
+}
+
+static int write_attr(struct test_data *td, u64 sample_type, u64 *id)
+{
+	struct perf_event_attr attr = {
+		.size = sizeof(attr),
+		.type = PERF_TYPE_HARDWARE,
+		.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS,
+		.sample_type = sample_type,
+		.sample_period = 1,
+	};
+
+	return perf_event__synthesize_attr(&td->tool, &attr, 1, id, process);
+}
+
+static int write_comm(int fd, pid_t pid, pid_t tid, const char *comm_str)
+{
+	struct perf_record_comm comm;
+	ssize_t sz = sizeof(comm);
+
+	comm.header.type = PERF_RECORD_COMM;
+	comm.header.misc = PERF_RECORD_MISC_USER;
+	comm.header.size = sz;
+
+	comm.pid = pid;
+	comm.tid = tid;
+	strncpy(comm.comm, comm_str, 16);
+
+	if (writen(fd, &comm, sz) != sz) {
+		pr_debug("%s failed\n", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int write_mmap(int fd, pid_t pid, pid_t tid, u64 start, u64 len, u64 pgoff,
+		      const char *filename)
+{
+	char buf[PERF_SAMPLE_MAX_SIZE];
+	struct perf_record_mmap *mmap = (struct perf_record_mmap *)buf;
+	size_t fsz = roundup(strlen(filename) + 1, 8);
+	ssize_t sz = sizeof(*mmap) - sizeof(mmap->filename) + fsz;
+
+	mmap->header.type = PERF_RECORD_MMAP;
+	mmap->header.misc = PERF_RECORD_MISC_USER;
+	mmap->header.size = sz;
+
+	mmap->pid   = pid;
+	mmap->tid   = tid;
+	mmap->start = start;
+	mmap->len   = len;
+	mmap->pgoff = pgoff;
+	strncpy(mmap->filename, filename, sizeof(mmap->filename));
+
+	if (writen(fd, mmap, sz) != sz) {
+		pr_debug("%s failed\n", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int write_sample(struct test_data *td, u64 sample_type, u64 id, pid_t pid, pid_t tid)
+{
+	char buf[PERF_SAMPLE_MAX_SIZE];
+	union perf_event *event = (union perf_event *)buf;
+	struct perf_sample sample = {
+		.ip		= td->ip,
+		.addr		= td->addr,
+		.id		= id,
+		.time		= 1234567890,
+		.cpu		= 31,
+		.pid		= pid,
+		.tid		= tid,
+		.period		= 543212345,
+		.stream_id	= 101,
+	};
+	int err;
+
+	event->header.type = PERF_RECORD_SAMPLE;
+	event->header.misc = PERF_RECORD_MISC_USER;
+	event->header.size = perf_event__sample_event_size(&sample, sample_type, 0);
+	err = perf_event__synthesize_sample(event, sample_type, 0, &sample);
+	if (err)
+		return test_result("perf_event__synthesize_sample() failed", TEST_FAIL);
+
+	err = process(&td->tool, event, &sample, td->machine);
+	if (err)
+		return test_result("Failed to write sample", TEST_FAIL);
+
+	return TEST_OK;
+}
+
+static void close_fd(int fd)
+{
+	if (fd >= 0)
+		close(fd);
+}
+
+static const char *prog = "int bar(){};int foo(){bar();};int main(){foo();return 0;}";
+
+static int write_prog(char *file_name)
+{
+	int fd = creat(file_name, 0644);
+	ssize_t n = strlen(prog);
+	bool err = fd < 0 || writen(fd, prog, n) != n;
+
+	close_fd(fd);
+	return err ? -1 : 0;
+}
+
+static int get_dlfilters_path(char *buf, size_t sz)
+{
+	char perf[PATH_MAX];
+	char path[PATH_MAX];
+	char *perf_path;
+	char *exec_path;
+
+	perf_exe(perf, sizeof(perf));
+	perf_path = dirname(perf);
+	snprintf(path, sizeof(path), "%s/dlfilters/dlfilter-test-api-v0.so", perf_path);
+	if (access(path, R_OK)) {
+		exec_path = get_argv_exec_path();
+		if (!exec_path)
+			return -1;
+		snprintf(path, sizeof(path), "%s/dlfilters/dlfilter-test-api-v0.so", exec_path);
+		free(exec_path);
+		if (access(path, R_OK))
+			return -1;
+	}
+	strlcpy(buf, dirname(path), sz);
+	return 0;
+}
+
+static int check_filter_desc(struct test_data *td)
+{
+	char *long_desc;
+	char *desc;
+
+	if (get_filter_desc(td->dlfilters, "dlfilter-test-api-v0.so", &desc, &long_desc) &&
+	    long_desc && !strcmp(long_desc, "Filter used by the 'dlfilter C API' perf test") &&
+	    desc && !strcmp(desc, "dlfilter to test v0 C API"))
+		return 0;
+
+	return -1;
+}
+
+static int get_ip_addr(struct test_data *td)
+{
+	struct map *map;
+	struct symbol *sym;
+
+	map = dso__new_map(td->prog_file_name);
+	if (!map)
+		return -1;
+
+	sym = map__find_symbol_by_name(map, "foo");
+	if (sym)
+		td->foo = sym->start;
+
+	sym = map__find_symbol_by_name(map, "bar");
+	if (sym)
+		td->bar = sym->start;
+
+	map__put(map);
+
+	td->ip = MAP_START + td->foo;
+	td->addr = MAP_START + td->bar;
+
+	return td->foo && td->bar ? 0 : -1;
+}
+
+static int do_run_perf_script(struct test_data *td, int do_early)
+{
+	return system_cmd("%s script -i %s "
+			  "--dlfilter %s/dlfilter-test-api-v0.so "
+			  "--dlarg first "
+			  "--dlarg %d "
+			  "--dlarg %" PRIu64 " "
+			  "--dlarg %" PRIu64 " "
+			  "--dlarg %d "
+			  "--dlarg last",
+			  td->perf, td->perf_data_file_name, td->dlfilters,
+			  verbose, td->ip, td->addr, do_early);
+}
+
+static int run_perf_script(struct test_data *td)
+{
+	int do_early;
+	int err;
+
+	for (do_early = 0; do_early < 3; do_early++) {
+		err = do_run_perf_script(td, do_early);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+#define TEST_SAMPLE_TYPE (PERF_SAMPLE_IP | PERF_SAMPLE_TID | \
+			  PERF_SAMPLE_IDENTIFIER | PERF_SAMPLE_TIME | \
+			  PERF_SAMPLE_ADDR | PERF_SAMPLE_CPU | \
+			  PERF_SAMPLE_PERIOD | PERF_SAMPLE_STREAM_ID)
+
+static int test__dlfilter_test(struct test_data *td)
+{
+	u64 sample_type = TEST_SAMPLE_TYPE;
+	pid_t pid = 12345;
+	pid_t tid = 12346;
+	u64 id = 99;
+	int err;
+
+	if (get_dlfilters_path(td->dlfilters, PATH_MAX))
+		return test_result("dlfilters not found", TEST_SKIP);
+
+	if (check_filter_desc(td))
+		return test_result("Failed to get expected filter description", TEST_FAIL);
+
+	if (!have_gcc())
+		return test_result("gcc not found", TEST_SKIP);
+
+	pr_debug("dlfilters path: %s\n", td->dlfilters);
+
+	if (write_prog(td->c_file_name))
+		return test_result("Failed to write test C file", TEST_FAIL);
+
+	if (verbose > 1)
+		system_cmd("cat %s ; echo", td->c_file_name);
+
+	if (system_cmd("gcc -g -o %s %s", td->prog_file_name, td->c_file_name))
+		return TEST_FAIL;
+
+	if (verbose > 2)
+		system_cmd("objdump -x -dS %s", td->prog_file_name);
+
+	if (get_ip_addr(td))
+		return test_result("Failed to find program symbols", TEST_FAIL);
+
+	pr_debug("Creating new host machine structure\n");
+	td->machine = machine__new_host();
+	td->machine->env = &perf_env;
+
+	td->fd = creat(td->perf_data_file_name, 0644);
+	if (td->fd < 0)
+		return test_result("Failed to create test perf.data file", TEST_FAIL);
+
+	err = perf_header__write_pipe(td->fd);
+	if (err < 0)
+		return test_result("perf_header__write_pipe() failed", TEST_FAIL);
+
+	err = write_attr(td, sample_type, &id);
+	if (err)
+		return test_result("perf_event__synthesize_attr() failed", TEST_FAIL);
+
+	if (write_comm(td->fd, pid, tid, "test-prog"))
+		return TEST_FAIL;
+
+	if (write_mmap(td->fd, pid, tid, MAP_START, 0x10000, 0, td->prog_file_name))
+		return TEST_FAIL;
+
+	if (write_sample(td, sample_type, id, pid, tid) != TEST_OK)
+		return TEST_FAIL;
+
+	if (verbose > 1)
+		system_cmd("%s script -i %s -D", td->perf, td->perf_data_file_name);
+
+	err = run_perf_script(td);
+	if (err)
+		return TEST_FAIL;
+
+	return TEST_OK;
+}
+
+static void unlink_path(const char *path)
+{
+	if (*path)
+		unlink(path);
+}
+
+static void test_data__free(struct test_data *td)
+{
+	machine__delete(td->machine);
+	close_fd(td->fd);
+	unlink_path(td->c_file_name);
+	unlink_path(td->prog_file_name);
+	unlink_path(td->perf_data_file_name);
+}
+
+int test__dlfilter(struct test *test __maybe_unused, int subtest __maybe_unused)
+{
+	struct test_data td = {.fd = -1};
+	int pid = getpid();
+	int err;
+
+	perf_exe(td.perf, sizeof(td.perf));
+
+	snprintf(td.perf_data_file_name, PATH_MAX, "/tmp/dlfilter-test-%u-perf-data", pid);
+	snprintf(td.c_file_name, PATH_MAX, "/tmp/dlfilter-test-%u-prog.c", pid);
+	snprintf(td.prog_file_name, PATH_MAX, "/tmp/dlfilter-test-%u-prog", pid);
+
+	err = test__dlfilter_test(&td);
+	test_data__free(&td);
+	return err;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 1100dd55b657..fe1306f58495 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -127,6 +127,7 @@ int test__parse_metric(struct test *test, int subtest);
 int test__pe_file_parsing(struct test *test, int subtest);
 int test__expand_cgroup_events(struct test *test, int subtest);
 int test__perf_time_to_tsc(struct test *test, int subtest);
+int test__dlfilter(struct test *test, int subtest);
 
 bool test__bp_signal_is_supported(void);
 bool test__bp_account_is_supported(void);
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c
index 7d11ce76157c..db964d5a52af 100644
--- a/tools/perf/util/dlfilter.c
+++ b/tools/perf/util/dlfilter.c
@@ -530,8 +530,8 @@ int dlfilter__do_filter_event(struct dlfilter *d,
 	return ret;
 }
 
-static bool get_filter_desc(const char *dirname, const char *name,
-			    char **desc, char **long_desc)
+bool get_filter_desc(const char *dirname, const char *name, char **desc,
+		     char **long_desc)
 {
 	char path[PATH_MAX];
 	void *handle;
diff --git a/tools/perf/util/dlfilter.h b/tools/perf/util/dlfilter.h
index 505980442360..cc4bb9657d05 100644
--- a/tools/perf/util/dlfilter.h
+++ b/tools/perf/util/dlfilter.h
@@ -93,5 +93,7 @@ static inline int dlfilter__filter_event_early(struct dlfilter *d,
 }
 
 int list_available_dlfilters(const struct option *opt, const char *s, int unset);
+bool get_filter_desc(const char *dirname, const char *name, char **desc,
+		     char **long_desc);
 
 #endif
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* Re: [PATCH 1/5] perf script: Fix unnecessary machine_resolve()
  2021-08-10 11:48 ` [PATCH 1/5] perf script: Fix unnecessary machine_resolve() Adrian Hunter
@ 2021-08-10 18:25   ` Arnaldo Carvalho de Melo
  2021-08-11 10:18     ` Adrian Hunter
  0 siblings, 1 reply; 13+ messages in thread
From: Arnaldo Carvalho de Melo @ 2021-08-10 18:25 UTC (permalink / raw)
  To: Adrian Hunter; +Cc: Jiri Olsa, linux-kernel

Em Tue, Aug 10, 2021 at 02:48:09PM +0300, Adrian Hunter escreveu:
> machine_resolve() may have already been called. Test for that to avoid
> calling it again unnecessarily.

By some dlfilter function, right...

Perhaps it would be better for machine__resolve() itself to check that?

Probably we'll need a 'force' arg, or have __machine__resolve() that
does exactly what machine__resolve() does today and then tools wanting
to force it to avoid using whatever is 'cached'?

- Arnaldo
 
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
>  tools/perf/builtin-script.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
> index e2e165b53499..f469354155f1 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -2212,7 +2212,7 @@ static int process_sample_event(struct perf_tool *tool,
>  	if (filter_cpu(sample))
>  		goto out_put;
>  
> -	if (machine__resolve(machine, &al, sample) < 0) {
> +	if (!al.thread && machine__resolve(machine, &al, sample) < 0) {
>  		pr_err("problem processing %d event, skipping it.\n",
>  		       event->header.type);
>  		ret = -1;
> -- 
> 2.17.1
> 

-- 

- Arnaldo

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 2/5] perf script: Fix --list-dlfilters documentation
  2021-08-10 11:48 ` [PATCH 2/5] perf script: Fix --list-dlfilters documentation Adrian Hunter
@ 2021-08-10 18:28   ` Arnaldo Carvalho de Melo
  0 siblings, 0 replies; 13+ messages in thread
From: Arnaldo Carvalho de Melo @ 2021-08-10 18:28 UTC (permalink / raw)
  To: Adrian Hunter; +Cc: Jiri Olsa, linux-kernel

Em Tue, Aug 10, 2021 at 02:48:10PM +0300, Adrian Hunter escreveu:
> The option --list-dlfilters does use a string value.

Added:

Fixes: 638e2b9984ee1b8d ("perf script: Add option to list dlfilters")

- Arnaldo
 
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
>  tools/perf/Documentation/perf-script.txt | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
> index aa3a0b2c29a2..c80515243560 100644
> --- a/tools/perf/Documentation/perf-script.txt
> +++ b/tools/perf/Documentation/perf-script.txt
> @@ -106,7 +106,7 @@ OPTIONS
>  	Pass 'arg' as an argument to the dlfilter. --dlarg may be repeated
>  	to add more arguments.
>  
> ---list-dlfilters=::
> +--list-dlfilters::
>          Display a list of available dlfilters. Use with option -v (must come
>          before option --list-dlfilters) to show long descriptions.
>  
> -- 
> 2.17.1
> 

-- 

- Arnaldo

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 5/5] perf tools: Add dlfilter test
  2021-08-10 11:48 ` [PATCH 5/5] perf tools: Add dlfilter test Adrian Hunter
@ 2021-08-10 18:32   ` Arnaldo Carvalho de Melo
  2021-08-10 19:06     ` Adrian Hunter
  0 siblings, 1 reply; 13+ messages in thread
From: Arnaldo Carvalho de Melo @ 2021-08-10 18:32 UTC (permalink / raw)
  To: Adrian Hunter; +Cc: Jiri Olsa, linux-kernel

Em Tue, Aug 10, 2021 at 02:48:13PM +0300, Adrian Hunter escreveu:
> Add a perf test to test the dlfilter C API.
> 
> A perf.data file is synthesized and then processed by perf script with a
> dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to
> provide a dso to match the synthesized perf.data file.

[root@five ~]# perf test dlfilter
72: dlfilter C API                                                  : FAILED!
[root@five ~]# perf test -v dlfilter
72: dlfilter C API                                                  :
--- start ---
test child forked, pid 3358542
Checking for gcc
Command: gcc --version
gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
Command: gcc -g -o /tmp/dlfilter-test-3358542-prog /tmp/dlfilter-test-3358542-prog.c
Creating new host machine structure
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3358542-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
Failed with return value 139
test child finished with -1
---- end ----
dlfilter C API: FAILED!
[root@five ~]# cat /etc/redhat-release
Fedora release 34 (Thirty Four)
[root@five ~]# cat /etc/os-release
NAME=Fedora
VERSION="34.20210721.0 (Silverblue)"
ID=fedora
VERSION_ID=34
VERSION_CODENAME=""
PLATFORM_ID="platform:f34"
PRETTY_NAME="Fedora 34.20210721.0 (Silverblue)"
ANSI_COLOR="0;38;2;60;110;180"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:34"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora-silverblue/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=34
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=34
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Silverblue"
VARIANT_ID=silverblue
OSTREE_VERSION='34.20210721.0'
[root@five ~]#

Trying to figure this out...

- Arnaldo

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 5/5] perf tools: Add dlfilter test
  2021-08-10 18:32   ` Arnaldo Carvalho de Melo
@ 2021-08-10 19:06     ` Adrian Hunter
  2021-08-10 20:21       ` Arnaldo Carvalho de Melo
  0 siblings, 1 reply; 13+ messages in thread
From: Adrian Hunter @ 2021-08-10 19:06 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

On 10/08/21 9:32 pm, Arnaldo Carvalho de Melo wrote:
> Em Tue, Aug 10, 2021 at 02:48:13PM +0300, Adrian Hunter escreveu:
>> Add a perf test to test the dlfilter C API.
>>
>> A perf.data file is synthesized and then processed by perf script with a
>> dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to
>> provide a dso to match the synthesized perf.data file.
> 
> [root@five ~]# perf test dlfilter
> 72: dlfilter C API                                                  : FAILED!
> [root@five ~]# perf test -v dlfilter
> 72: dlfilter C API                                                  :
> --- start ---
> test child forked, pid 3358542
> Checking for gcc
> Command: gcc --version
> gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
> Copyright (C) 2021 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> 
> dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
> Command: gcc -g -o /tmp/dlfilter-test-3358542-prog /tmp/dlfilter-test-3358542-prog.c
> Creating new host machine structure
> Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3358542-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
> Failed with return value 139
> test child finished with -1
> ---- end ----
> dlfilter C API: FAILED!
> [root@five ~]# cat /etc/redhat-release
> Fedora release 34 (Thirty Four)
> [root@five ~]# cat /etc/os-release
> NAME=Fedora
> VERSION="34.20210721.0 (Silverblue)"
> ID=fedora
> VERSION_ID=34
> VERSION_CODENAME=""
> PLATFORM_ID="platform:f34"
> PRETTY_NAME="Fedora 34.20210721.0 (Silverblue)"
> ANSI_COLOR="0;38;2;60;110;180"
> LOGO=fedora-logo-icon
> CPE_NAME="cpe:/o:fedoraproject:fedora:34"
> HOME_URL="https://fedoraproject.org/"
> DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora-silverblue/"
> SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
> BUG_REPORT_URL="https://bugzilla.redhat.com/"
> REDHAT_BUGZILLA_PRODUCT="Fedora"
> REDHAT_BUGZILLA_PRODUCT_VERSION=34
> REDHAT_SUPPORT_PRODUCT="Fedora"
> REDHAT_SUPPORT_PRODUCT_VERSION=34
> PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
> VARIANT="Silverblue"
> VARIANT_ID=silverblue
> OSTREE_VERSION='34.20210721.0'
> [root@five ~]#
> 
> Trying to figure this out...

What does it give with two 'v''s ?
i.e.

perf test -vv dlfilter

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 5/5] perf tools: Add dlfilter test
  2021-08-10 19:06     ` Adrian Hunter
@ 2021-08-10 20:21       ` Arnaldo Carvalho de Melo
  2021-08-11 10:10         ` Adrian Hunter
  0 siblings, 1 reply; 13+ messages in thread
From: Arnaldo Carvalho de Melo @ 2021-08-10 20:21 UTC (permalink / raw)
  To: Adrian Hunter; +Cc: Jiri Olsa, linux-kernel

Em Tue, Aug 10, 2021 at 10:06:13PM +0300, Adrian Hunter escreveu:
> On 10/08/21 9:32 pm, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Aug 10, 2021 at 02:48:13PM +0300, Adrian Hunter escreveu:
> >> Add a perf test to test the dlfilter C API.
> >>
> >> A perf.data file is synthesized and then processed by perf script with a
> >> dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to
> >> provide a dso to match the synthesized perf.data file.
> > 
> > [root@five ~]# perf test dlfilter
> > 72: dlfilter C API                                                  : FAILED!
> > [root@five ~]# perf test -v dlfilter
> > 72: dlfilter C API                                                  :
> > --- start ---
> > test child forked, pid 3358542
> > Checking for gcc
> > Command: gcc --version
> > gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
> > Copyright (C) 2021 Free Software Foundation, Inc.
> > This is free software; see the source for copying conditions.  There is NO
> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> > 
> > dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
> > Command: gcc -g -o /tmp/dlfilter-test-3358542-prog /tmp/dlfilter-test-3358542-prog.c
> > Creating new host machine structure
> > Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3358542-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
> > Failed with return value 139
> > test child finished with -1
> > ---- end ----
> > dlfilter C API: FAILED!
> > [root@five ~]# cat /etc/redhat-release
> > Fedora release 34 (Thirty Four)
> > [root@five ~]# cat /etc/os-release
> > NAME=Fedora
> > VERSION="34.20210721.0 (Silverblue)"
> > ID=fedora
> > VERSION_ID=34
> > VERSION_CODENAME=""
> > PLATFORM_ID="platform:f34"
> > PRETTY_NAME="Fedora 34.20210721.0 (Silverblue)"
> > ANSI_COLOR="0;38;2;60;110;180"
> > LOGO=fedora-logo-icon
> > CPE_NAME="cpe:/o:fedoraproject:fedora:34"
> > HOME_URL="https://fedoraproject.org/"
> > DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora-silverblue/"
> > SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
> > BUG_REPORT_URL="https://bugzilla.redhat.com/"
> > REDHAT_BUGZILLA_PRODUCT="Fedora"
> > REDHAT_BUGZILLA_PRODUCT_VERSION=34
> > REDHAT_SUPPORT_PRODUCT="Fedora"
> > REDHAT_SUPPORT_PRODUCT_VERSION=34
> > PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
> > VARIANT="Silverblue"
> > VARIANT_ID=silverblue
> > OSTREE_VERSION='34.20210721.0'
> > [root@five ~]#
> > 
> > Trying to figure this out...
> 
> What does it give with two 'v''s ?
> i.e.
> 
> perf test -vv dlfilter

What I've tried so far:

[root@five ~]# perf probe -x /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so -F
called.0
called.5
check_addr_al
check_al
check_attr
check_sample
completed.0
deregister_tm_clones
do_checks
filt_dat
filter_description
filter_description
filter_event
filter_event
filter_event_early
filter_event_early
frame_dummy
perf_dlfilter_fns
perf_dlfilter_fns
register_tm_clones
start
start
stop
stop
test_fail
verbose
[root@five ~]# perf probe -l
  probe_dlfilter:check_addr_al (on check_addr_al in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:check_al (on check_al in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:check_attr (on check_attr in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:check_sample (on check_sample in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:filter_description (on filter_description in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:filter_event (on filter_event in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:filter_event_early (on filter_event_early in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:start (on start in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:stop  (on stop in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
  probe_dlfilter:test_fail (on test_fail in /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
[root@five ~]# perf trace -e probe_dlfilter:*/max-stack=10/ perf test -v dlfilter
72: dlfilter C API                                                  :
--- start ---
test child forked, pid 3360902
Checking for gcc
Command: gcc --version
gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
Command: gcc -g -o /tmp/dlfilter-test-3360902-prog /tmp/dlfilter-test-3360902-prog.c
     0.000 perf/3360902 probe_dlfilter:filter_description(__probe_ip: 140448631966717)
                                       filter_description (/var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
                                       test__dlfilter (/var/home/acme/bin/perf)
                                       test_and_print (/var/home/acme/bin/perf)
                                       cmd_test (/var/home/acme/bin/perf)
                                       run_builtin (/var/home/acme/bin/perf)
                                       main (/var/home/acme/bin/perf)
                                       __libc_start_main (/usr/lib64/libc-2.33.so)
Creating new host machine structure
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3360902-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 1 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
Failed with return value 139
test child finished with -1
---- end ----
dlfilter C API: FAILED!
[root@five ~]# perf trace -e probe_dlfilter:*/max-stack=10/ perf test -vv dlfilter
72: dlfilter C API                                                  :
--- start ---
test child forked, pid 3360986
Checking for gcc
Command: gcc --version
     0.000 :3360986/3360986 probe_dlfilter:filter_description(__probe_ip: 140709239057405)
                                       filter_description (/var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
                                       [0] ([unknown])
                                       [0] ([unknown])
                                       [0] ([unknown])
                                       [0] ([unknown])
                                       [0] ([unknown])
                                       [0] ([unknown])
gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
Command: cat /tmp/dlfilter-test-3360986-prog.c ; echo
int bar(){};int foo(){bar();};int main(){foo();return 0;}
Command: gcc -g -o /tmp/dlfilter-test-3360986-prog /tmp/dlfilter-test-3360986-prog.c
Creating new host machine structure
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3360986-perf-data -D

0 [0x90]: event: 64
.
. ... raw event: size 144 bytes
.  0000:  40 00 00 00 00 00 90 00 00 00 00 00 80 00 00 00  @...............
.  0010:  04 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  ................
.  0020:  8f 03 01 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0030:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0040:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0050:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0060:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0070:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0080:  00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......

-1 -1 0 [0x90]: PERF_RECORD_ATTR
0x90 [0x20]: event: 3
.
. ... raw event: size 32 bytes
.  0000:  03 00 00 00 02 00 20 00 39 30 00 00 3a 30 00 00  ...... .90..:0..
.  0010:  74 65 73 74 2d 70 72 6f 67 00 00 00 00 00 00 00  test-prog.......

-1 -1 0x90 [0x20]: PERF_RECORD_COMM: test-prog:12345/12346

0xb0 [0x48]: event: 1
.
. ... raw event: size 72 bytes
.  0000:  01 00 00 00 02 00 48 00 39 30 00 00 3a 30 00 00  ......H.90..:0..
.  0010:  00 00 40 00 00 00 00 00 00 00 01 00 00 00 00 00  ..@.............
.  0020:  00 00 00 00 00 00 00 00 2f 74 6d 70 2f 64 6c 66  ......../tmp/dlf
.  0030:  69 6c 74 65 72 2d 74 65 73 74 2d 33 33 36 30 39  ilter-test-33609
.  0040:  38 36 2d 70 72 6f 67 00                          86-prog.        

-1 -1 0xb0 [0x48]: PERF_RECORD_MMAP 12345/12346: [0x400000(0x10000) @ 0]: x /tmp/dlfilter-test-3360986-prog

0xf8 [0x48]: event: 9
.
. ... raw event: size 72 bytes
.  0000:  09 00 00 00 02 00 48 00 63 00 00 00 00 00 00 00  ......H.c.......
.  0010:  0d 11 40 00 00 00 00 00 39 30 00 00 3a 30 00 00  ..@.....90..:0..
.  0020:  d2 02 96 49 00 00 00 00 06 11 40 00 00 00 00 00  <D2>..I......@.....
.  0030:  65 00 00 00 00 00 00 00 1f 00 00 00 00 00 00 00  e...............
.  0040:  39 c3 60 20 00 00 00 00                          9<C3>` ....        

31 1234567890 0xf8 [0x48]: PERF_RECORD_SAMPLE(IP, 0x2): 12345/12346: 0x40110d period: 543212345 addr: 0x401106
 ... thread: test-prog:12346
 ...... dso: /tmp/dlfilter-test-3360986-prog
       test-prog 12346 [031]     1.234567:  543212345 branches:HG:            40110d foo+0x0 (/tmp/dlfilter-test-3360986-prog) =>           401106 bar+0x0 (/tmp/dlfilter-test-3360986-prog)
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3360986-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 2 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
Failed with return value 139
test child finished with -1
---- end ----
dlfilter C API: FAILED!
[root@five ~]# fg
-bash: fg: current: no such job
[root@five ~]# ls -la /tmp/dlfilter-test-3360986-perf-data
ls: cannot access '/tmp/dlfilter-test-3360986-perf-data': No such file or directory
[root@five ~]# ls -la /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so
-rwxr-xr-x. 2 acme acme 17352 Aug 10 15:31 /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so
[root@five ~]# perf trace -e probe_dlfilter:*/max-stack=10/ perf test -vvv dlfilter
72: dlfilter C API                                                  :
--- start ---
test child forked, pid 3361199
Checking for gcc
Command: gcc --version
gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dlfilters path: /var/home/acme/libexec/perf-core/dlfilters
Command: cat /tmp/dlfilter-test-3361199-prog.c ; echo
int bar(){};int foo(){bar();};int main(){foo();return 0;}
Command: gcc -g -o /tmp/dlfilter-test-3361199-prog /tmp/dlfilter-test-3361199-prog.c
     0.000 perf/3361199 probe_dlfilter:filter_description(__probe_ip: 140125348678653)
                                       filter_description (/var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so)
                                       test__dlfilter (/var/home/acme/bin/perf)
                                       test_and_print (/var/home/acme/bin/perf)
                                       cmd_test (/var/home/acme/bin/perf)
                                       run_builtin (/var/home/acme/bin/perf)
                                       main (/var/home/acme/bin/perf)
                                       __libc_start_main (/usr/lib64/libc-2.33.so)
Command: objdump -x -dS /tmp/dlfilter-test-3361199-prog

/tmp/dlfilter-test-3361199-prog:     file format elf64-x86-64
/tmp/dlfilter-test-3361199-prog
architecture: i386:x86-64, flags 0x00000112:
EXEC_P, HAS_SYMS, D_PAGED
start address 0x0000000000401020

Program Header:
    PHDR off    0x0000000000000040 vaddr 0x0000000000400040 paddr 0x0000000000400040 align 2**3
         filesz 0x00000000000002d8 memsz 0x00000000000002d8 flags r--
  INTERP off    0x0000000000000318 vaddr 0x0000000000400318 paddr 0x0000000000400318 align 2**0
         filesz 0x000000000000001c memsz 0x000000000000001c flags r--
    LOAD off    0x0000000000000000 vaddr 0x0000000000400000 paddr 0x0000000000400000 align 2**12
         filesz 0x0000000000000498 memsz 0x0000000000000498 flags r--
    LOAD off    0x0000000000001000 vaddr 0x0000000000401000 paddr 0x0000000000401000 align 2**12
         filesz 0x00000000000001c5 memsz 0x00000000000001c5 flags r-x
    LOAD off    0x0000000000002000 vaddr 0x0000000000402000 paddr 0x0000000000402000 align 2**12
         filesz 0x0000000000000158 memsz 0x0000000000000158 flags r--
    LOAD off    0x0000000000002e50 vaddr 0x0000000000403e50 paddr 0x0000000000403e50 align 2**12
         filesz 0x00000000000001cc memsz 0x00000000000001d0 flags rw-
 DYNAMIC off    0x0000000000002e60 vaddr 0x0000000000403e60 paddr 0x0000000000403e60 align 2**3
         filesz 0x0000000000000190 memsz 0x0000000000000190 flags rw-
    NOTE off    0x0000000000000338 vaddr 0x0000000000400338 paddr 0x0000000000400338 align 2**3
         filesz 0x0000000000000020 memsz 0x0000000000000020 flags r--
    NOTE off    0x0000000000000358 vaddr 0x0000000000400358 paddr 0x0000000000400358 align 2**2
         filesz 0x0000000000000044 memsz 0x0000000000000044 flags r--
0x6474e553 off    0x0000000000000338 vaddr 0x0000000000400338 paddr 0x0000000000400338 align 2**3
         filesz 0x0000000000000020 memsz 0x0000000000000020 flags r--
EH_FRAME off    0x0000000000002010 vaddr 0x0000000000402010 paddr 0x0000000000402010 align 2**2
         filesz 0x0000000000000044 memsz 0x0000000000000044 flags r--
   STACK off    0x0000000000000000 vaddr 0x0000000000000000 paddr 0x0000000000000000 align 2**4
         filesz 0x0000000000000000 memsz 0x0000000000000000 flags rw-
   RELRO off    0x0000000000002e50 vaddr 0x0000000000403e50 paddr 0x0000000000403e50 align 2**0
         filesz 0x00000000000001b0 memsz 0x00000000000001b0 flags r--

Dynamic Section:
  NEEDED               libc.so.6
  INIT                 0x0000000000401000
  FINI                 0x00000000004011b8
  INIT_ARRAY           0x0000000000403e50
  INIT_ARRAYSZ         0x0000000000000008
  FINI_ARRAY           0x0000000000403e58
  FINI_ARRAYSZ         0x0000000000000008
  GNU_HASH             0x00000000004003a0
  STRTAB               0x0000000000400408
  SYMTAB               0x00000000004003c0
  STRSZ                0x0000000000000038
  SYMENT               0x0000000000000018
  DEBUG                0x0000000000000000
  RELA                 0x0000000000400468
  RELASZ               0x0000000000000030
  RELAENT              0x0000000000000018
  VERNEED              0x0000000000400448
  VERNEEDNUM           0x0000000000000001
  VERSYM               0x0000000000400440

Version References:
  required from libc.so.6:
    0x09691a75 0x00 02 GLIBC_2.2.5

Sections:
Idx Name          Size      VMA               LMA               File off  Algn
  0 .interp       0000001c  0000000000400318  0000000000400318  00000318  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  1 .note.gnu.property 00000020  0000000000400338  0000000000400338  00000338  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  2 .note.gnu.build-id 00000024  0000000000400358  0000000000400358  00000358  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  3 .note.ABI-tag 00000020  000000000040037c  000000000040037c  0000037c  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 .gnu.hash     0000001c  00000000004003a0  00000000004003a0  000003a0  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  5 .dynsym       00000048  00000000004003c0  00000000004003c0  000003c0  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  6 .dynstr       00000038  0000000000400408  0000000000400408  00000408  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  7 .gnu.version  00000006  0000000000400440  0000000000400440  00000440  2**1
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  8 .gnu.version_r 00000020  0000000000400448  0000000000400448  00000448  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  9 .rela.dyn     00000030  0000000000400468  0000000000400468  00000468  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 10 .init         0000001b  0000000000401000  0000000000401000  00001000  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
 11 .text         00000195  0000000000401020  0000000000401020  00001020  2**4
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
 12 .fini         0000000d  00000000004011b8  00000000004011b8  000011b8  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
 13 .rodata       00000010  0000000000402000  0000000000402000  00002000  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 14 .eh_frame_hdr 00000044  0000000000402010  0000000000402010  00002010  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 15 .eh_frame     00000100  0000000000402058  0000000000402058  00002058  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 16 .init_array   00000008  0000000000403e50  0000000000403e50  00002e50  2**3
                  CONTENTS, ALLOC, LOAD, DATA
 17 .fini_array   00000008  0000000000403e58  0000000000403e58  00002e58  2**3
                  CONTENTS, ALLOC, LOAD, DATA
 18 .dynamic      00000190  0000000000403e60  0000000000403e60  00002e60  2**3
                  CONTENTS, ALLOC, LOAD, DATA
 19 .got          00000010  0000000000403ff0  0000000000403ff0  00002ff0  2**3
                  CONTENTS, ALLOC, LOAD, DATA
 20 .got.plt      00000018  0000000000404000  0000000000404000  00003000  2**3
                  CONTENTS, ALLOC, LOAD, DATA
 21 .data         00000004  0000000000404018  0000000000404018  00003018  2**0
                  CONTENTS, ALLOC, LOAD, DATA
 22 .bss          00000004  000000000040401c  000000000040401c  0000301c  2**0
                  ALLOC
 23 .comment      0000002e  0000000000000000  0000000000000000  0000301c  2**0
                  CONTENTS, READONLY
 24 .gnu.build.attributes 00001978  0000000000406020  0000000000406020  0000304c  2**2
                  CONTENTS, READONLY, OCTETS
 25 .debug_aranges 00000030  0000000000000000  0000000000000000  000049c4  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
 26 .debug_info   00000090  0000000000000000  0000000000000000  000049f4  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
 27 .debug_abbrev 0000006a  0000000000000000  0000000000000000  00004a84  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
 28 .debug_line   00000065  0000000000000000  0000000000000000  00004aee  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
 29 .debug_str    00000050  0000000000000000  0000000000000000  00004b53  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
 30 .debug_line_str 0000002d  0000000000000000  0000000000000000  00004ba3  2**0
                  CONTENTS, READONLY, DEBUGGING, OCTETS
SYMBOL TABLE:
0000000000400318 l    d  .interp	0000000000000000              .interp
0000000000400338 l    d  .note.gnu.property	0000000000000000              .note.gnu.property
0000000000400358 l    d  .note.gnu.build-id	0000000000000000              .note.gnu.build-id
000000000040037c l    d  .note.ABI-tag	0000000000000000              .note.ABI-tag
00000000004003a0 l    d  .gnu.hash	0000000000000000              .gnu.hash
00000000004003c0 l    d  .dynsym	0000000000000000              .dynsym
0000000000400408 l    d  .dynstr	0000000000000000              .dynstr
0000000000400440 l    d  .gnu.version	0000000000000000              .gnu.version
0000000000400448 l    d  .gnu.version_r	0000000000000000              .gnu.version_r
0000000000400468 l    d  .rela.dyn	0000000000000000              .rela.dyn
0000000000401000 l    d  .init	0000000000000000              .init
0000000000401020 l    d  .text	0000000000000000              .text
00000000004011b8 l    d  .fini	0000000000000000              .fini
0000000000402000 l    d  .rodata	0000000000000000              .rodata
0000000000402010 l    d  .eh_frame_hdr	0000000000000000              .eh_frame_hdr
0000000000402058 l    d  .eh_frame	0000000000000000              .eh_frame
0000000000403e50 l    d  .init_array	0000000000000000              .init_array
0000000000403e58 l    d  .fini_array	0000000000000000              .fini_array
0000000000403e60 l    d  .dynamic	0000000000000000              .dynamic
0000000000403ff0 l    d  .got	0000000000000000              .got
0000000000404000 l    d  .got.plt	0000000000000000              .got.plt
0000000000404018 l    d  .data	0000000000000000              .data
000000000040401c l    d  .bss	0000000000000000              .bss
0000000000000000 l    d  .comment	0000000000000000              .comment
0000000000406020 l    d  .gnu.build.attributes	0000000000000000              .gnu.build.attributes
0000000000000000 l    d  .debug_aranges	0000000000000000              .debug_aranges
0000000000000000 l    d  .debug_info	0000000000000000              .debug_info
0000000000000000 l    d  .debug_abbrev	0000000000000000              .debug_abbrev
0000000000000000 l    d  .debug_line	0000000000000000              .debug_line
0000000000000000 l    d  .debug_str	0000000000000000              .debug_str
0000000000000000 l    d  .debug_line_str	0000000000000000              .debug_line_str
0000000000000000 l    df *ABS*	0000000000000000              /usr/lib/gcc/x86_64-redhat-linux/11/../../../../lib64/crt1.o
000000000040104f l       .text	0000000000000000              .hidden .annobin_lto
000000000040104f l       .text	0000000000000000              .hidden .annobin_lto_end
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.exit
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.exit
000000000040037c l     O .note.ABI-tag	0000000000000020              __abi_tag
000000000040104f l       .text	0000000000000000              .hidden .annobin_lto
000000000040104f l       .text	0000000000000000              .hidden .annobin_lto_end
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.exit
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.exit
0000000000401050 l       .text	0000000000000000              .hidden .annobin_lto
0000000000401055 l       .text	0000000000000000              .hidden .annobin_lto_end
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.hot
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.unlikely
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.startup
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto.exit
0000000000401020 l       .text	0000000000000000              .hidden .annobin_lto_end.exit
0000000000401050 l       .text	0000000000000000              .hidden .annobin__dl_relocate_static_pie.start
0000000000401055 l       .text	0000000000000000              .hidden .annobin__dl_relocate_static_pie.end
0000000000000000 l    df *ABS*	0000000000000000              crtstuff.c
0000000000401060 l     F .text	0000000000000000              deregister_tm_clones
0000000000401090 l     F .text	0000000000000000              register_tm_clones
00000000004010d0 l     F .text	0000000000000000              __do_global_dtors_aux
000000000040401c l     O .bss	0000000000000001              completed.0
0000000000403e58 l     O .fini_array	0000000000000000              __do_global_dtors_aux_fini_array_entry
0000000000401100 l     F .text	0000000000000000              frame_dummy
0000000000403e50 l     O .init_array	0000000000000000              __frame_dummy_init_array_entry
0000000000000000 l    df *ABS*	0000000000000000              dlfilter-test-3361199-prog.c
0000000000000000 l    df *ABS*	0000000000000000              crtstuff.c
0000000000402154 l     O .eh_frame	0000000000000000              __FRAME_END__
0000000000000000 l    df *ABS*	0000000000000000              
0000000000403e58 l       .init_array	0000000000000000              __init_array_end
0000000000403e60 l     O .dynamic	0000000000000000              _DYNAMIC
0000000000403e50 l       .init_array	0000000000000000              __init_array_start
0000000000402010 l       .eh_frame_hdr	0000000000000000              __GNU_EH_FRAME_HDR
0000000000404000 l     O .got.plt	0000000000000000              _GLOBAL_OFFSET_TABLE_
00000000004011b0 g     F .text	0000000000000005              __libc_csu_fini
0000000000404018  w      .data	0000000000000000              data_start
000000000040401c g       .data	0000000000000000              _edata
0000000000401106 g     F .text	0000000000000007              bar
00000000004011b8 g     F .fini	0000000000000000              .hidden _fini
0000000000000000       F *UND*	0000000000000000              __libc_start_main@@GLIBC_2.2.5
0000000000404018 g       .data	0000000000000000              __data_start
0000000000000000  w      *UND*	0000000000000000              __gmon_start__
0000000000402008 g     O .rodata	0000000000000000              .hidden __dso_handle
0000000000402000 g     O .rodata	0000000000000004              _IO_stdin_used
0000000000401140 g     F .text	0000000000000065              __libc_csu_init
000000000040110d g     F .text	0000000000000011              foo
0000000000404020 g       .bss	0000000000000000              _end
0000000000401050 g     F .text	0000000000000005              .hidden _dl_relocate_static_pie
0000000000401020 g     F .text	000000000000002f              _start
000000000040401c g       .bss	0000000000000000              __bss_start
000000000040111e g     F .text	0000000000000015              main
0000000000404020 g     O .data	0000000000000000              .hidden __TMC_END__
0000000000401000 g     F .init	0000000000000000              .hidden _init



Disassembly of section .init:

0000000000401000 <_init>:
  401000:	f3 0f 1e fa          	endbr64 
  401004:	48 83 ec 08          	sub    $0x8,%rsp
  401008:	48 8b 05 e9 2f 00 00 	mov    0x2fe9(%rip),%rax        # 403ff8 <__gmon_start__>
  40100f:	48 85 c0             	test   %rax,%rax
  401012:	74 02                	je     401016 <_init+0x16>
  401014:	ff d0                	callq  *%rax
  401016:	48 83 c4 08          	add    $0x8,%rsp
  40101a:	c3                   	retq   

Disassembly of section .text:

0000000000401020 <_start>:
  401020:	f3 0f 1e fa          	endbr64 
  401024:	31 ed                	xor    %ebp,%ebp
  401026:	49 89 d1             	mov    %rdx,%r9
  401029:	5e                   	pop    %rsi
  40102a:	48 89 e2             	mov    %rsp,%rdx
  40102d:	48 83 e4 f0          	and    $0xfffffffffffffff0,%rsp
  401031:	50                   	push   %rax
  401032:	54                   	push   %rsp
  401033:	49 c7 c0 b0 11 40 00 	mov    $0x4011b0,%r8
  40103a:	48 c7 c1 40 11 40 00 	mov    $0x401140,%rcx
  401041:	48 c7 c7 1e 11 40 00 	mov    $0x40111e,%rdi
  401048:	ff 15 a2 2f 00 00    	callq  *0x2fa2(%rip)        # 403ff0 <__libc_start_main@GLIBC_2.2.5>
  40104e:	f4                   	hlt    

000000000040104f <.annobin_lto>:
  40104f:	90                   	nop

0000000000401050 <_dl_relocate_static_pie>:
  401050:	f3 0f 1e fa          	endbr64 
  401054:	c3                   	retq   

0000000000401055 <.annobin__dl_relocate_static_pie.end>:
  401055:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  40105c:	00 00 00 
  40105f:	90                   	nop

0000000000401060 <deregister_tm_clones>:
  401060:	b8 20 40 40 00       	mov    $0x404020,%eax
  401065:	48 3d 20 40 40 00    	cmp    $0x404020,%rax
  40106b:	74 13                	je     401080 <deregister_tm_clones+0x20>
  40106d:	b8 00 00 00 00       	mov    $0x0,%eax
  401072:	48 85 c0             	test   %rax,%rax
  401075:	74 09                	je     401080 <deregister_tm_clones+0x20>
  401077:	bf 20 40 40 00       	mov    $0x404020,%edi
  40107c:	ff e0                	jmpq   *%rax
  40107e:	66 90                	xchg   %ax,%ax
  401080:	c3                   	retq   
  401081:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  401088:	00 00 00 00 
  40108c:	0f 1f 40 00          	nopl   0x0(%rax)

0000000000401090 <register_tm_clones>:
  401090:	be 20 40 40 00       	mov    $0x404020,%esi
  401095:	48 81 ee 20 40 40 00 	sub    $0x404020,%rsi
  40109c:	48 89 f0             	mov    %rsi,%rax
  40109f:	48 c1 ee 3f          	shr    $0x3f,%rsi
  4010a3:	48 c1 f8 03          	sar    $0x3,%rax
  4010a7:	48 01 c6             	add    %rax,%rsi
  4010aa:	48 d1 fe             	sar    %rsi
  4010ad:	74 11                	je     4010c0 <register_tm_clones+0x30>
  4010af:	b8 00 00 00 00       	mov    $0x0,%eax
  4010b4:	48 85 c0             	test   %rax,%rax
  4010b7:	74 07                	je     4010c0 <register_tm_clones+0x30>
  4010b9:	bf 20 40 40 00       	mov    $0x404020,%edi
  4010be:	ff e0                	jmpq   *%rax
  4010c0:	c3                   	retq   
  4010c1:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  4010c8:	00 00 00 00 
  4010cc:	0f 1f 40 00          	nopl   0x0(%rax)

00000000004010d0 <__do_global_dtors_aux>:
  4010d0:	f3 0f 1e fa          	endbr64 
  4010d4:	80 3d 41 2f 00 00 00 	cmpb   $0x0,0x2f41(%rip)        # 40401c <completed.0>
  4010db:	75 13                	jne    4010f0 <__do_global_dtors_aux+0x20>
  4010dd:	55                   	push   %rbp
  4010de:	48 89 e5             	mov    %rsp,%rbp
  4010e1:	e8 7a ff ff ff       	callq  401060 <deregister_tm_clones>
  4010e6:	c6 05 2f 2f 00 00 01 	movb   $0x1,0x2f2f(%rip)        # 40401c <completed.0>
  4010ed:	5d                   	pop    %rbp
  4010ee:	c3                   	retq   
  4010ef:	90                   	nop
  4010f0:	c3                   	retq   
  4010f1:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  4010f8:	00 00 00 00 
  4010fc:	0f 1f 40 00          	nopl   0x0(%rax)

0000000000401100 <frame_dummy>:
  401100:	f3 0f 1e fa          	endbr64 
  401104:	eb 8a                	jmp    401090 <register_tm_clones>

0000000000401106 <bar>:
  401106:	55                   	push   %rbp
  401107:	48 89 e5             	mov    %rsp,%rbp
  40110a:	90                   	nop
  40110b:	5d                   	pop    %rbp
  40110c:	c3                   	retq   

000000000040110d <foo>:
  40110d:	55                   	push   %rbp
  40110e:	48 89 e5             	mov    %rsp,%rbp
  401111:	b8 00 00 00 00       	mov    $0x0,%eax
  401116:	e8 eb ff ff ff       	callq  401106 <bar>
  40111b:	90                   	nop
  40111c:	5d                   	pop    %rbp
  40111d:	c3                   	retq   

000000000040111e <main>:
  40111e:	55                   	push   %rbp
  40111f:	48 89 e5             	mov    %rsp,%rbp
  401122:	b8 00 00 00 00       	mov    $0x0,%eax
  401127:	e8 e1 ff ff ff       	callq  40110d <foo>
  40112c:	b8 00 00 00 00       	mov    $0x0,%eax
  401131:	5d                   	pop    %rbp
  401132:	c3                   	retq   
  401133:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  40113a:	00 00 00 
  40113d:	0f 1f 00             	nopl   (%rax)

0000000000401140 <__libc_csu_init>:
  401140:	f3 0f 1e fa          	endbr64 
  401144:	41 57                	push   %r15
  401146:	4c 8d 3d 03 2d 00 00 	lea    0x2d03(%rip),%r15        # 403e50 <__frame_dummy_init_array_entry>
  40114d:	41 56                	push   %r14
  40114f:	49 89 d6             	mov    %rdx,%r14
  401152:	41 55                	push   %r13
  401154:	49 89 f5             	mov    %rsi,%r13
  401157:	41 54                	push   %r12
  401159:	41 89 fc             	mov    %edi,%r12d
  40115c:	55                   	push   %rbp
  40115d:	48 8d 2d f4 2c 00 00 	lea    0x2cf4(%rip),%rbp        # 403e58 <__do_global_dtors_aux_fini_array_entry>
  401164:	53                   	push   %rbx
  401165:	4c 29 fd             	sub    %r15,%rbp
  401168:	48 83 ec 08          	sub    $0x8,%rsp
  40116c:	e8 8f fe ff ff       	callq  401000 <_init>
  401171:	48 c1 fd 03          	sar    $0x3,%rbp
  401175:	74 1f                	je     401196 <__libc_csu_init+0x56>
  401177:	31 db                	xor    %ebx,%ebx
  401179:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  401180:	4c 89 f2             	mov    %r14,%rdx
  401183:	4c 89 ee             	mov    %r13,%rsi
  401186:	44 89 e7             	mov    %r12d,%edi
  401189:	41 ff 14 df          	callq  *(%r15,%rbx,8)
  40118d:	48 83 c3 01          	add    $0x1,%rbx
  401191:	48 39 dd             	cmp    %rbx,%rbp
  401194:	75 ea                	jne    401180 <__libc_csu_init+0x40>
  401196:	48 83 c4 08          	add    $0x8,%rsp
  40119a:	5b                   	pop    %rbx
  40119b:	5d                   	pop    %rbp
  40119c:	41 5c                	pop    %r12
  40119e:	41 5d                	pop    %r13
  4011a0:	41 5e                	pop    %r14
  4011a2:	41 5f                	pop    %r15
  4011a4:	c3                   	retq   
  4011a5:	66 66 2e 0f 1f 84 00 	data16 nopw %cs:0x0(%rax,%rax,1)
  4011ac:	00 00 00 00 

00000000004011b0 <__libc_csu_fini>:
  4011b0:	f3 0f 1e fa          	endbr64 
  4011b4:	c3                   	retq   

Disassembly of section .fini:

00000000004011b8 <_fini>:
  4011b8:	f3 0f 1e fa          	endbr64 
  4011bc:	48 83 ec 08          	sub    $0x8,%rsp
  4011c0:	48 83 c4 08          	add    $0x8,%rsp
  4011c4:	c3                   	retq   
Creating new host machine structure
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3361199-perf-data -D

0 [0x90]: event: 64
.
. ... raw event: size 144 bytes
.  0000:  40 00 00 00 00 00 90 00 00 00 00 00 80 00 00 00  @...............
.  0010:  04 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  ................
.  0020:  8f 03 01 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0030:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0040:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0050:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0060:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0070:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
.  0080:  00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......

-1 -1 0 [0x90]: PERF_RECORD_ATTR
0x90 [0x20]: event: 3
.
. ... raw event: size 32 bytes
.  0000:  03 00 00 00 02 00 20 00 39 30 00 00 3a 30 00 00  ...... .90..:0..
.  0010:  74 65 73 74 2d 70 72 6f 67 00 00 00 00 00 00 00  test-prog.......

-1 -1 0x90 [0x20]: PERF_RECORD_COMM: test-prog:12345/12346

0xb0 [0x48]: event: 1
.
. ... raw event: size 72 bytes
.  0000:  01 00 00 00 02 00 48 00 39 30 00 00 3a 30 00 00  ......H.90..:0..
.  0010:  00 00 40 00 00 00 00 00 00 00 01 00 00 00 00 00  ..@.............
.  0020:  00 00 00 00 00 00 00 00 2f 74 6d 70 2f 64 6c 66  ......../tmp/dlf
.  0030:  69 6c 74 65 72 2d 74 65 73 74 2d 33 33 36 31 31  ilter-test-33611
.  0040:  39 39 2d 70 72 6f 67 00                          99-prog.        

-1 -1 0xb0 [0x48]: PERF_RECORD_MMAP 12345/12346: [0x400000(0x10000) @ 0]: x /tmp/dlfilter-test-3361199-prog

0xf8 [0x48]: event: 9
.
. ... raw event: size 72 bytes
.  0000:  09 00 00 00 02 00 48 00 63 00 00 00 00 00 00 00  ......H.c.......
.  0010:  0d 11 40 00 00 00 00 00 39 30 00 00 3a 30 00 00  ..@.....90..:0..
.  0020:  d2 02 96 49 00 00 00 00 06 11 40 00 00 00 00 00  <D2>..I......@.....
.  0030:  65 00 00 00 00 00 00 00 1f 00 00 00 00 00 00 00  e...............
.  0040:  39 c3 60 20 00 00 00 00                          9<C3>` ....        

31 1234567890 0xf8 [0x48]: PERF_RECORD_SAMPLE(IP, 0x2): 12345/12346: 0x40110d period: 543212345 addr: 0x401106
 ... thread: test-prog:12346
 ...... dso: /tmp/dlfilter-test-3361199-prog
       test-prog 12346 [031]     1.234567:  543212345 branches:HG:            40110d foo+0x0 (/tmp/dlfilter-test-3361199-prog) =>           401106 bar+0x0 (/tmp/dlfilter-test-3361199-prog)
Command: /var/home/acme/bin/perf script -i /tmp/dlfilter-test-3361199-perf-data --dlfilter /var/home/acme/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so --dlarg first --dlarg 3 --dlarg 4198669 --dlarg 4198662 --dlarg 0 --dlarg last
Failed with return value 139
test child finished with -1
---- end ----
dlfilter C API: FAILED!
[root@five ~]# 



^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 5/5] perf tools: Add dlfilter test
  2021-08-10 20:21       ` Arnaldo Carvalho de Melo
@ 2021-08-11 10:10         ` Adrian Hunter
  0 siblings, 0 replies; 13+ messages in thread
From: Adrian Hunter @ 2021-08-11 10:10 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

On 10/08/21 11:21 pm, Arnaldo Carvalho de Melo wrote:
> Em Tue, Aug 10, 2021 at 10:06:13PM +0300, Adrian Hunter escreveu:
>> On 10/08/21 9:32 pm, Arnaldo Carvalho de Melo wrote:
>>> Em Tue, Aug 10, 2021 at 02:48:13PM +0300, Adrian Hunter escreveu:
>>>> Add a perf test to test the dlfilter C API.
>>>>
>>>> A perf.data file is synthesized and then processed by perf script with a
>>>> dlfilter named dlfilter-test-api-v0.so. Also a C file is compiled to
>>>> provide a dso to match the synthesized perf.data file.
>>>
>>> [root@five ~]# perf test dlfilter
>>> 72: dlfilter C API                                                  : FAILED!

Should be fixed in V2

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [PATCH 1/5] perf script: Fix unnecessary machine_resolve()
  2021-08-10 18:25   ` Arnaldo Carvalho de Melo
@ 2021-08-11 10:18     ` Adrian Hunter
  0 siblings, 0 replies; 13+ messages in thread
From: Adrian Hunter @ 2021-08-11 10:18 UTC (permalink / raw)
  To: Arnaldo Carvalho de Melo; +Cc: Jiri Olsa, linux-kernel

On 10/08/21 9:25 pm, Arnaldo Carvalho de Melo wrote:
> Em Tue, Aug 10, 2021 at 02:48:09PM +0300, Adrian Hunter escreveu:
>> machine_resolve() may have already been called. Test for that to avoid
>> calling it again unnecessarily.
> 
> By some dlfilter function, right...
> 
> Perhaps it would be better for machine__resolve() itself to check that?
> 
> Probably we'll need a 'force' arg, or have __machine__resolve() that
> does exactly what machine__resolve() does today and then tools wanting
> to force it to avoid using whatever is 'cached'?

Yes, or perhaps introduce machine__resolve_once() and thread__resolve_once() ?

> 
> - Arnaldo
>  
>> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
>> ---
>>  tools/perf/builtin-script.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
>> index e2e165b53499..f469354155f1 100644
>> --- a/tools/perf/builtin-script.c
>> +++ b/tools/perf/builtin-script.c
>> @@ -2212,7 +2212,7 @@ static int process_sample_event(struct perf_tool *tool,
>>  	if (filter_cpu(sample))
>>  		goto out_put;
>>  
>> -	if (machine__resolve(machine, &al, sample) < 0) {
>> +	if (!al.thread && machine__resolve(machine, &al, sample) < 0) {
>>  		pr_err("problem processing %d event, skipping it.\n",
>>  		       event->header.type);
>>  		ret = -1;
>> -- 
>> 2.17.1
>>
> 


^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2021-08-11 10:18 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-10 11:48 [PATCH 0/5] perf tools: Add dlfilter test Adrian Hunter
2021-08-10 11:48 ` [PATCH 1/5] perf script: Fix unnecessary machine_resolve() Adrian Hunter
2021-08-10 18:25   ` Arnaldo Carvalho de Melo
2021-08-11 10:18     ` Adrian Hunter
2021-08-10 11:48 ` [PATCH 2/5] perf script: Fix --list-dlfilters documentation Adrian Hunter
2021-08-10 18:28   ` Arnaldo Carvalho de Melo
2021-08-10 11:48 ` [PATCH 3/5] perf tools: Amend dlfilter documentation wrt library dependencies Adrian Hunter
2021-08-10 11:48 ` [PATCH 4/5] perf tools: Move perf_dlfilters.h in the source tree Adrian Hunter
2021-08-10 11:48 ` [PATCH 5/5] perf tools: Add dlfilter test Adrian Hunter
2021-08-10 18:32   ` Arnaldo Carvalho de Melo
2021-08-10 19:06     ` Adrian Hunter
2021-08-10 20:21       ` Arnaldo Carvalho de Melo
2021-08-11 10:10         ` Adrian Hunter

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