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[GIT PULL 00/11] perf/urgent fixes

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  [GIT PULL 00/11] perf/urgent fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    [PATCH 11/11] perf report: Ensure the perf DSO mapping matches what libdw sees Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    [PATCH 01/11] perf annotate: Fix failure when filename has special chars Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    [PATCH 05/11] perf header: Set proper module name when build-id event found Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    [PATCH 06/11] perf symbols: Set module info when build-id event found Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    [PATCH 08/11] perf test: Disable breakpoint signal tests for powerpc Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-06 21:30 +0200
    Re: [GIT PULL 00/11] perf/urgent fixes Ingo Molnar <mingo@kernel.org> - 2017-06-07 18:00 +0200

#1659139 — [GIT PULL 00/11] perf/urgent fixes

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 6e30437bd42c4d4e9cfc4c40efda00eb83a11cde:

  tools/include: Sync kernel ABI headers with tooling headers (2017-05-24 09:00:21 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-4.12-20170606

for you to fetch changes up to 2538b9e2450ae255337c04356e9e0f8cb9ec48d9:

  perf report: Ensure the perf DSO mapping matches what libdw sees (2017-06-05 14:18:05 -0300)

----------------------------------------------------------------
perf/urgent fixes:

- Only print NMI watchdog hint in 'perf stat' when it is enabled (Andi Kleen)

- Fix sys_mmap/sys_old_mmap shandling in s390 in 'perf trace' (Jiri Olsa)

- Disable breakpoint signal tests in powerpc, that lacks the perf kernel
  glue to set breakpoint events and makes 'perf test' always fail (Jiri Olsa)

- Fix 'perf annotate' for branch instruction with multiple operands (Kim Phillips)

- Add missing powerpc triplet when disassembling with 'objdump' in 'perf
  annotate' (Kim Phillips)

- Do not trow away partial unwound stacks when using libdw, making
  callchains produced with it similar to those produced when linked with
  the other DWARF unwind library supported in perf, libunwind (Milian Wolff)

- Fixes to properly handle kernel modules when processing build-id meta
  events (Namhyung Kim)

- Fix handling of compressed modules in the build-id cache (Namhyung Kim)

- Fix 'perf annotate' failure when filename has special chars (Ravi Bangoria)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Andi Kleen (1):
      perf stat: Only print NMI watchdog hint when enabled

Jiri Olsa (2):
      perf trace: Add mmap alias for s390
      perf test: Disable breakpoint signal tests for powerpc

Kim Phillips (2):
      perf annotate: Fix branch instruction with multiple operands
      perf annotate: Add missing powerpc triplet

Milian Wolff (2):
      perf report: Include partial stacks unwound with libdw
      perf report: Ensure the perf DSO mapping matches what libdw sees

Namhyung Kim (3):
      perf header: Set proper module name when build-id event found
      perf symbols: Set module info when build-id event found
      perf symbols: Use correct filename for compressed modules in build-id cache

Ravi Bangoria (1):
      perf annotate: Fix failure when filename has special chars

 tools/perf/arch/common.c        |  1 +
 tools/perf/builtin-stat.c       |  5 ++++-
 tools/perf/builtin-trace.c      |  4 ++++
 tools/perf/tests/bp_signal.c    | 14 ++++++++++++++
 tools/perf/tests/builtin-test.c |  7 +++++++
 tools/perf/tests/tests.h        |  3 +++
 tools/perf/util/annotate.c      | 35 +++++++++++++++++++++++++++++++----
 tools/perf/util/dso.c           | 15 +++++++++++++++
 tools/perf/util/dso.h           |  3 +++
 tools/perf/util/header.c        | 12 ++++++++++--
 tools/perf/util/machine.c       | 11 +----------
 tools/perf/util/symbol-elf.c    |  5 +----
 tools/perf/util/unwind-libdw.c  | 10 +++++++++-
 13 files changed, 103 insertions(+), 22 deletions(-)

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#1659140 — [PATCH 11/11] perf report: Ensure the perf DSO mapping matches what libdw sees

From: Milian Wolff <milian.wolff@kdab.com>

In some situations the libdw unwinder stopped working properly.  I.e.
with libunwind we see:

~~~~~
heaptrack_gui  2228 135073.400112:     641314 cycles:
	            e8ed _dl_fixup (/usr/lib/ld-2.25.so)
	           15f06 _dl_runtime_resolve_sse_vex (/usr/lib/ld-2.25.so)
	           ed94c KDynamicJobTracker::KDynamicJobTracker (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
	           608f3 _GLOBAL__sub_I_kdynamicjobtracker.cpp (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
	            f199 call_init.part.0 (/usr/lib/ld-2.25.so)
	            f2a5 _dl_init (/usr/lib/ld-2.25.so)
	             db9 _dl_start_user (/usr/lib/ld-2.25.so)
~~~~~

But with libdw and without this patch this sample is not properly
unwound:

~~~~~
heaptrack_gui  2228 135073.400112:     641314 cycles:
	            e8ed _dl_fixup (/usr/lib/ld-2.25.so)
	           15f06 _dl_runtime_resolve_sse_vex (/usr/lib/ld-2.25.so)
	           ed94c KDynamicJobTracker::KDynamicJobTracker (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
~~~~~

Debug output showed me that libdw found a module for the last frame
address, but it thinks it belongs to /usr/lib/ld-2.25.so. This patch
double-checks what libdw sees and what perf knows. If the mappings
mismatch, we now report the elf known to perf. This fixes the situation
above, and the libdw unwinder produces the same stack as libunwind.

Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20170602143753.16907-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/unwind-libdw.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index b4c20124d2ee..da45c4be5fb3 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -39,6 +39,14 @@ static int __report_module(struct addr_location *al, u64 ip,
 		return 0;
 
 	mod = dwfl_addrmodule(ui->dwfl, ip);
+	if (mod) {
+		Dwarf_Addr s;
+
+		dwfl_module_info(mod, NULL, &s, NULL, NULL, NULL, NULL, NULL);
+		if (s != al->map->start)
+			mod = 0;
+	}
+
 	if (!mod)
 		mod = dwfl_report_elf(ui->dwfl, dso->short_name,
 				      dso->long_name, -1, al->map->start,
-- 
2.9.4

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#1659142 — [PATCH 01/11] perf annotate: Fix failure when filename has special chars

From: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>

When filename contains special chars, perf annotate fails
with an error:

  $ perf annotate --vmlinux ./vmlinux\(test\) --stdio native_safe_halt
    sh: -c: line 0: syntax error near unexpected token `('
    sh: -c: line 0: `objdump  --start-address=0xffffffff8184e840
    --stop-address=0xffffffff8184e848 -l -d --no-show-raw -S -C
    ./vmlinux(test) 2>/dev/null|grep -v ./vmlinux(test):|expand'

Fix it by surrounding filename in double quotes.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Adam Stylinski <adam.stylinski@etegent.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20170505101417.2117-1-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/annotate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 683f8340460c..07d5608a675f 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1429,7 +1429,7 @@ int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_na
 	snprintf(command, sizeof(command),
 		 "%s %s%s --start-address=0x%016" PRIx64
 		 " --stop-address=0x%016" PRIx64
-		 " -l -d %s %s -C %s 2>/dev/null|grep -v %s:|expand",
+		 " -l -d %s %s -C \"%s\" 2>/dev/null|grep -v \"%s:\"|expand",
 		 objdump_path ? objdump_path : "objdump",
 		 disassembler_style ? "-M " : "",
 		 disassembler_style ? disassembler_style : "",
-- 
2.9.4

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#1659143 — [PATCH 05/11] perf header: Set proper module name when build-id event found

From: Namhyung Kim <namhyung@kernel.org>

When perf processes build-id event, it creates DSOs with the build-id.
But it didn't set the module short name (like '[module-name]') so when
processing a kernel mmap event of the module, it cannot found the DSO as
it only checks the short names.

That leads for perf to create a same DSO without the build-id info and
it'll lookup the system path even if the DSO is already in the build-id
cache.  After kernel was updated, perf cannot find the DSO  and cannot
show symbols in it anymore.

You can see this if you have an old data file (w/ old kernel version):

  $ perf report -i perf.data.old -v |& grep scsi_mod
  build id event received for /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz : cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1
  Failed to open /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz, continuing without symbols
  ...

The second message didn't show the build-id.  With this patch:

  $ perf report -i perf.data.old -v |& grep scsi_mod
  build id event received for /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz: cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1
  /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz with build id cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1 not found, continuing without symbols
  ...

Now it shows the build-id but still cannot load the symbol table.  This
is a different problem which will be fixed in the next patch.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-1-namhyung@kernel.org
[ Fix the build on older compilers (debian <= 8, fedora <= 21, etc) wrt kmod_path var init ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/header.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 314a07151fb7..c40a4d8acf8b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1469,8 +1469,16 @@ static int __event_process_build_id(struct build_id_event *bev,
 
 		dso__set_build_id(dso, &bev->build_id);
 
-		if (!is_kernel_module(filename, cpumode))
-			dso->kernel = dso_type;
+		if (dso_type != DSO_TYPE_USER) {
+			struct kmod_path m = { .name = NULL, };
+
+			if (!kmod_path__parse_name(&m, filename) && m.kmod)
+				dso__set_short_name(dso, strdup(m.name), true);
+			else
+				dso->kernel = dso_type;
+
+			free(m.name);
+		}
 
 		build_id__sprintf(dso->build_id, sizeof(dso->build_id),
 				  sbuild_id);
-- 
2.9.4

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#1659144 — [PATCH 06/11] perf symbols: Set module info when build-id event found

From: Namhyung Kim <namhyung@kernel.org>

Like machine__findnew_module_dso(), it should set necessary info for
kernel modules to find symbol info from the file.  Factor out
dso__set_module_info() to do it.

This is needed for dso__needs_decompress() to detect such DSOs.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/dso.c     | 15 +++++++++++++++
 tools/perf/util/dso.h     |  3 +++
 tools/perf/util/header.c  |  2 +-
 tools/perf/util/machine.c | 11 +----------
 4 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index a96a99d2369f..b27d127cdf68 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -335,6 +335,21 @@ int __kmod_path__parse(struct kmod_path *m, const char *path,
 	return 0;
 }
 
+void dso__set_module_info(struct dso *dso, struct kmod_path *m,
+			  struct machine *machine)
+{
+	if (machine__is_host(machine))
+		dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
+	else
+		dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
+
+	/* _KMODULE_COMP should be next to _KMODULE */
+	if (m->kmod && m->comp)
+		dso->symtab_type++;
+
+	dso__set_short_name(dso, strdup(m->name), true);
+}
+
 /*
  * Global list of open DSOs and the counter.
  */
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index 12350b171727..5fe2ab5877bd 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -259,6 +259,9 @@ int __kmod_path__parse(struct kmod_path *m, const char *path,
 #define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
 #define kmod_path__parse_ext(__m, __p)  __kmod_path__parse(__m, __p, false, true)
 
+void dso__set_module_info(struct dso *dso, struct kmod_path *m,
+			  struct machine *machine);
+
 /*
  * The dso__data_* external interface provides following functions:
  *   dso__data_get_fd
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index c40a4d8acf8b..5cac8d5e009a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1473,7 +1473,7 @@ static int __event_process_build_id(struct build_id_event *bev,
 			struct kmod_path m = { .name = NULL, };
 
 			if (!kmod_path__parse_name(&m, filename) && m.kmod)
-				dso__set_short_name(dso, strdup(m.name), true);
+				dso__set_module_info(dso, &m, machine);
 			else
 				dso->kernel = dso_type;
 
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index d97e014c3df3..d7f31cb0a4cb 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -572,16 +572,7 @@ static struct dso *machine__findnew_module_dso(struct machine *machine,
 		if (dso == NULL)
 			goto out_unlock;
 
-		if (machine__is_host(machine))
-			dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
-		else
-			dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
-
-		/* _KMODULE_COMP should be next to _KMODULE */
-		if (m->kmod && m->comp)
-			dso->symtab_type++;
-
-		dso__set_short_name(dso, strdup(m->name), true);
+		dso__set_module_info(dso, m, machine);
 		dso__set_long_name(dso, strdup(filename), true);
 	}
 
-- 
2.9.4

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#1659146 — [PATCH 08/11] perf test: Disable breakpoint signal tests for powerpc

From: Jiri Olsa <jolsa@redhat.com>

The following tests are failing on powerpc:

  # perf test break
  18: Breakpoint overflow signal handler  : FAILED!
  19: Breakpoint overflow sampling        : FAILED!

The powerpc kenel so far does not have support to even create
instruction breakpoints using the perf event interface, so those tests
fail early in the config phase.

I added a '->is_supported()' callback to test struct to be able to
disable specific tests. It seems better than putting ifdefs directly to
the test array.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170601205450.GA398@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/tests/bp_signal.c    | 14 ++++++++++++++
 tools/perf/tests/builtin-test.c |  7 +++++++
 tools/perf/tests/tests.h        |  3 +++
 3 files changed, 24 insertions(+)

diff --git a/tools/perf/tests/bp_signal.c b/tools/perf/tests/bp_signal.c
index e7664fe3bd33..8ba2c4618fe9 100644
--- a/tools/perf/tests/bp_signal.c
+++ b/tools/perf/tests/bp_signal.c
@@ -288,3 +288,17 @@ int test__bp_signal(int subtest __maybe_unused)
 	return count1 == 1 && overflows == 3 && count2 == 3 && overflows_2 == 3 && count3 == 2 ?
 		TEST_OK : TEST_FAIL;
 }
+
+bool test__bp_signal_is_supported(void)
+{
+/*
+ * The powerpc so far does not have support to even create
+ * instruction breakpoint using the perf event interface.
+ * Once it's there we can release this.
+ */
+#ifdef __powerpc__
+	return false;
+#else
+	return true;
+#endif
+}
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 9e08d297f1a9..3ccfd58a8c3c 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -97,10 +97,12 @@ static struct test generic_tests[] = {
 	{
 		.desc = "Breakpoint overflow signal handler",
 		.func = test__bp_signal,
+		.is_supported = test__bp_signal_is_supported,
 	},
 	{
 		.desc = "Breakpoint overflow sampling",
 		.func = test__bp_signal_overflow,
+		.is_supported = test__bp_signal_is_supported,
 	},
 	{
 		.desc = "Number of exit events of a simple workload",
@@ -401,6 +403,11 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
 		if (!perf_test__matches(t, curr, argc, argv))
 			continue;
 
+		if (t->is_supported && !t->is_supported()) {
+			pr_debug("%2d: %-*s: Disabled\n", i, width, t->desc);
+			continue;
+		}
+
 		pr_info("%2d: %-*s:", i, width, t->desc);
 
 		if (intlist__find(skiplist, i)) {
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 631859629403..577363809c9b 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -34,6 +34,7 @@ struct test {
 		int (*get_nr)(void);
 		const char *(*get_desc)(int subtest);
 	} subtest;
+	bool (*is_supported)(void);
 };
 
 /* Tests */
@@ -99,6 +100,8 @@ const char *test__clang_subtest_get_desc(int subtest);
 int test__clang_subtest_get_nr(void);
 int test__unit_number__scnprint(int subtest);
 
+bool test__bp_signal_is_supported(void);
+
 #if defined(__arm__) || defined(__aarch64__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
 struct thread;
-- 
2.9.4

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#1659952

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit 6e30437bd42c4d4e9cfc4c40efda00eb83a11cde:
> 
>   tools/include: Sync kernel ABI headers with tooling headers (2017-05-24 09:00:21 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-4.12-20170606
> 
> for you to fetch changes up to 2538b9e2450ae255337c04356e9e0f8cb9ec48d9:
> 
>   perf report: Ensure the perf DSO mapping matches what libdw sees (2017-06-05 14:18:05 -0300)
> 
> ----------------------------------------------------------------
> perf/urgent fixes:
> 
> - Only print NMI watchdog hint in 'perf stat' when it is enabled (Andi Kleen)
> 
> - Fix sys_mmap/sys_old_mmap shandling in s390 in 'perf trace' (Jiri Olsa)
> 
> - Disable breakpoint signal tests in powerpc, that lacks the perf kernel
>   glue to set breakpoint events and makes 'perf test' always fail (Jiri Olsa)
> 
> - Fix 'perf annotate' for branch instruction with multiple operands (Kim Phillips)
> 
> - Add missing powerpc triplet when disassembling with 'objdump' in 'perf
>   annotate' (Kim Phillips)
> 
> - Do not trow away partial unwound stacks when using libdw, making
>   callchains produced with it similar to those produced when linked with
>   the other DWARF unwind library supported in perf, libunwind (Milian Wolff)
> 
> - Fixes to properly handle kernel modules when processing build-id meta
>   events (Namhyung Kim)
> 
> - Fix handling of compressed modules in the build-id cache (Namhyung Kim)
> 
> - Fix 'perf annotate' failure when filename has special chars (Ravi Bangoria)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Andi Kleen (1):
>       perf stat: Only print NMI watchdog hint when enabled
> 
> Jiri Olsa (2):
>       perf trace: Add mmap alias for s390
>       perf test: Disable breakpoint signal tests for powerpc
> 
> Kim Phillips (2):
>       perf annotate: Fix branch instruction with multiple operands
>       perf annotate: Add missing powerpc triplet
> 
> Milian Wolff (2):
>       perf report: Include partial stacks unwound with libdw
>       perf report: Ensure the perf DSO mapping matches what libdw sees
> 
> Namhyung Kim (3):
>       perf header: Set proper module name when build-id event found
>       perf symbols: Set module info when build-id event found
>       perf symbols: Use correct filename for compressed modules in build-id cache
> 
> Ravi Bangoria (1):
>       perf annotate: Fix failure when filename has special chars
> 
>  tools/perf/arch/common.c        |  1 +
>  tools/perf/builtin-stat.c       |  5 ++++-
>  tools/perf/builtin-trace.c      |  4 ++++
>  tools/perf/tests/bp_signal.c    | 14 ++++++++++++++
>  tools/perf/tests/builtin-test.c |  7 +++++++
>  tools/perf/tests/tests.h        |  3 +++
>  tools/perf/util/annotate.c      | 35 +++++++++++++++++++++++++++++++----
>  tools/perf/util/dso.c           | 15 +++++++++++++++
>  tools/perf/util/dso.h           |  3 +++
>  tools/perf/util/header.c        | 12 ++++++++++--
>  tools/perf/util/machine.c       | 11 +----------
>  tools/perf/util/symbol-elf.c    |  5 +----
>  tools/perf/util/unwind-libdw.c  | 10 +++++++++-
>  13 files changed, 103 insertions(+), 22 deletions(-)

Pulled, thanks a lot Arnaldo!

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