[PATCH v1] perf test type profiling: Remote typedef on struct

[PATCH v1] perf test type profiling: Remote typedef on struct

[Ian Rogers]

The typedef creates an issue where the struct or the typedef may
appear in the output and cause the "perf data type profiling tests" to
fail. Let's remove the typedef to keep the test passing.

Fixes: 335047109d7d ("perf tests: Test annotate with data type profiling and C")
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/tests/shell/data_type_profiling.sh | 2 +-
 tools/perf/tests/workloads/datasym.c          | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/tests/shell/data_type_profiling.sh b/tools/perf/tests/shell/data_type_profiling.sh
index 2a7f8f7c42d0..fb47b7213b33 100755
--- a/tools/perf/tests/shell/data_type_profiling.sh
+++ b/tools/perf/tests/shell/data_type_profiling.sh
@@ -8,7 +8,7 @@ set -e
 # data type profiling manifestation
 
 # Values in testtypes and testprogs should match
-testtypes=("# data-type: struct Buf" "# data-type: struct _buf")
+testtypes=("# data-type: struct Buf" "# data-type: struct buf")
 testprogs=("perf test -w code_with_type" "perf test -w datasym")
 
 err=0
diff --git a/tools/perf/tests/workloads/datasym.c b/tools/perf/tests/workloads/datasym.c
index 1d0b7d64e1ba..19242c7255c0 100644
--- a/tools/perf/tests/workloads/datasym.c
+++ b/tools/perf/tests/workloads/datasym.c
@@ -4,14 +4,14 @@
 #include <linux/compiler.h>
 #include "../tests.h"
 
-typedef struct _buf {
+struct buf {
 	char data1;
 	char reserved[55];
 	char data2;
-} buf __attribute__((aligned(64)));
+} __attribute__((aligned(64)));
 
 /* volatile to try to avoid the compiler seeing reserved as unused. */
-static volatile buf workload_datasym_buf1 = {
+static volatile struct buf workload_datasym_buf1 = {
 	/* to have this in the data section */
 	.reserved[0] = 1,
 };
-- 
2.53.0.473.g4a7958ca14-goog

Re: [PATCH v1] perf test type profiling: Remote typedef on struct

[Dmitry Dolgov]

> On Mon, Mar 02, 2026 at 03:58:21PM -0800, Ian Rogers wrote:
> The typedef creates an issue where the struct or the typedef may
> appear in the output and cause the "perf data type profiling tests" to
> fail. Let's remove the typedef to keep the test passing.

Yes, makes sense to me, thanks. As mentioned in the previous message, it
sounds fishy to me that perf record and perf mem record capture
different data type -- I'll try to get to the bottom of it (I was sort
of hoping to finish the cross compilation topic first, but since it's
not moving that fast, why not do some debugging here).

Reviewed-by: Dmitrii Dolgov <9erthalion6@gmail.com>

Re: [PATCH v1] perf test type profiling: Remote typedef on struct

[Arnaldo Carvalho de Melo]

On Wed, Mar 04, 2026 at 11:44:16AM +0100, Dmitry Dolgov wrote:
> > On Mon, Mar 02, 2026 at 03:58:21PM -0800, Ian Rogers wrote:
> > The typedef creates an issue where the struct or the typedef may
> > appear in the output and cause the "perf data type profiling tests" to
> > fail. Let's remove the typedef to keep the test passing.
> 
> Yes, makes sense to me, thanks. As mentioned in the previous message, it
> sounds fishy to me that perf record and perf mem record capture
> different data type -- I'll try to get to the bottom of it (I was sort
> of hoping to finish the cross compilation topic first, but since it's
> not moving that fast, why not do some debugging here).
> 
> Reviewed-by: Dmitrii Dolgov <9erthalion6@gmail.com>

Thanks, applied to perf-tools, for v7.0.

- Arnaldo

Re: [PATCH v1] perf test type profiling: Remote typedef on struct

[Namhyung Kim]

On Mon, 02 Mar 2026 15:58:21 -0800, Ian Rogers wrote:
> The typedef creates an issue where the struct or the typedef may
> appear in the output and cause the "perf data type profiling tests" to
> fail. Let's remove the typedef to keep the test passing.
> 
> 
Applied to perf-tools-next, thanks!

Best regards,
Namhyung

Re: [PATCH v1] perf test type profiling: Remote typedef on struct

[Arnaldo Carvalho de Melo]

On Wed, Mar 04, 2026 at 01:48:53PM -0800, Namhyung Kim wrote:
> On Mon, 02 Mar 2026 15:58:21 -0800, Ian Rogers wrote:
> > The typedef creates an issue where the struct or the typedef may
> > appear in the output and cause the "perf data type profiling tests" to
> > fail. Let's remove the typedef to keep the test passing.
> > 
> > 
> Applied to perf-tools-next, thanks!

I applied this to perf-tools as well, for now just at tmp.perf-tools
tho.

- Arnaldo