linux-toradex.git/tools/testing/selftests/user_events, branch v6.3 Linux kernel for Apalis and Colibri modules selftests/user_events: add a note about user_events.h dependency 2023-02-14T20:18:55+00:00 Shuah Khan skhan@linuxfoundation.org 2023-02-14T19:19:39+00:00 0eb15a47bf437a268b69ab1a1a45fdf1f609b69f This test depends on <linux/user_events.h> exported in uapi The following commit removed user_events.h out of uapi: commit 5cfff569cab8 ("tracing: Move user_events.h temporarily out of include/uapi") This test will not compile until user_events.h is added back to uapi. Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> 
This test depends on <linux/user_events.h> exported in uapi
The following commit removed user_events.h out of uapi:
commit 5cfff569cab8 ("tracing: Move user_events.h temporarily out
   of include/uapi")

This test will not compile until user_events.h is added back to uapi.

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
selftests: user_events: Fix incorrect kernel headers search path 2023-02-13T16:09:45+00:00 Mathieu Desnoyers mathieu.desnoyers@efficios.com 2023-01-27T13:57:48+00:00 f3886fd28987c119a98493f625cb9940b5f1c9a0 Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents building against kernel headers from the build environment in scenarios where kernel headers are installed into a specific output directory (O=...). Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Cc: Ingo Molnar <mingo@redhat.com> Cc: <stable@vger.kernel.org> # 5.18+ Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> 
Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents
building against kernel headers from the build environment in scenarios
where kernel headers are installed into a specific output directory
(O=...).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org> # 5.18+
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
tracing/user_events: Use bits vs bytes for enabled status page data 2022-09-29T14:17:37+00:00 Beau Belgrave beaub@linux.microsoft.com 2022-07-28T23:33:08+00:00 39d6d08b2edf99c4b39a689a70bf0adee065b357 User processes may require many events and when they do the cache performance of a byte index status check is less ideal than a bit index. The previous event limit per-page was 4096, the new limit is 32,768. This change adds a bitwise index to the user_reg struct. Programs check that the bit at status_bit has a bit set within the status page(s). Link: https://lkml.kernel.org/r/20220728233309.1896-6-beaub@linux.microsoft.com Link: https://lore.kernel.org/all/2059213643.196683.1648499088753.JavaMail.zimbra@efficios.com/ Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
User processes may require many events and when they do the cache
performance of a byte index status check is less ideal than a bit index.
The previous event limit per-page was 4096, the new limit is 32,768.

This change adds a bitwise index to the user_reg struct. Programs check
that the bit at status_bit has a bit set within the status page(s).

Link: https://lkml.kernel.org/r/20220728233309.1896-6-beaub@linux.microsoft.com
Link: https://lore.kernel.org/all/2059213643.196683.1648499088753.JavaMail.zimbra@efficios.com/

Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
user_events: Add self-test for validator boundaries 2022-02-11T03:38:08+00:00 Beau Belgrave beaub@linux.microsoft.com 2022-01-18T20:43:24+00:00 7640e77035aadcd7d50f9c7583ca25a4e1aa2874 Tests to ensure validator boundary cases are working correctly within close and far bounds. Ensures __data_loc and __rel_loc strings are null terminated and within range. Ensures min size checks work as expected. Link: https://lkml.kernel.org/r/20220118204326.2169-11-beaub@linux.microsoft.com Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
Tests to ensure validator boundary cases are working correctly within
close and far bounds. Ensures __data_loc and __rel_loc strings are
null terminated and within range. Ensures min size checks work as
expected.

Link: https://lkml.kernel.org/r/20220118204326.2169-11-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
user_events: Add self-test for perf_event integration 2022-02-11T03:37:59+00:00 Beau Belgrave beaub@linux.microsoft.com 2022-01-18T20:43:23+00:00 3a6163893a9a6a90e086234ee205c1f74eeb5f84 Tests perf can be attached to and written out correctly. Ensures attach updates status bits in user programs. Link: https://lkml.kernel.org/r/20220118204326.2169-10-beaub@linux.microsoft.com Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
Tests perf can be attached to and written out correctly. Ensures attach
updates status bits in user programs.

Link: https://lkml.kernel.org/r/20220118204326.2169-10-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
user_events: Add self-test for dynamic_events integration 2022-02-11T03:37:53+00:00 Beau Belgrave beaub@linux.microsoft.com 2022-01-18T20:43:22+00:00 745bb7e683ff00e7b52e54b422fd05c58ae94e1a Tests matching deletes, creation of basic and complex types. Ensures common patterns work correctly when interacting with dynamic_events file. Link: https://lkml.kernel.org/r/20220118204326.2169-9-beaub@linux.microsoft.com Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
Tests matching deletes, creation of basic and complex types. Ensures
common patterns work correctly when interacting with dynamic_events
file.

Link: https://lkml.kernel.org/r/20220118204326.2169-9-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
user_events: Add self-test for ftrace integration 2022-02-11T03:37:47+00:00 Beau Belgrave beaub@linux.microsoft.com 2022-01-18T20:43:21+00:00 446640e49ec00458655e29c31e55aabd6702985d Tests basic functionality of registering/deregistering, status and writing data out via ftrace mechanisms within user_events. Link: https://lkml.kernel.org/r/20220118204326.2169-8-beaub@linux.microsoft.com Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> 
Tests basic functionality of registering/deregistering, status and
writing data out via ftrace mechanisms within user_events.

Link: https://lkml.kernel.org/r/20220118204326.2169-8-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>