On 2/20/20 3:25 PM, Joe Lawrence wrote:

On 2/19/20 11:42 PM, Michael Ellerman wrote:

...

Commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") added a 45 second timeout for tests, and also added a way for tests to customise the timeout via a settings file.

For example the ftrace tests take multiple minutes to run, so they were given longer in commit b43e78f65b1d ("tracing/selftests: Turn off timeout setting").

This works when the tests are run from the source tree. However if the tests are installed with "make -C tools/testing/selftests install", the settings files are not copied into the install directory. When the tests are then run from the install directory the longer timeouts are not applied and the tests timeout incorrectly.

So add the settings files to TEST_FILES of the appropriate Makefiles to cause the settings files to be installed using the existing install logic.

Fixes: 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") Signed-off-by: Michael Ellerman mpe@ellerman.id.au

---

tools/testing/selftests/ftrace/Makefile    | 2 +-   tools/testing/selftests/livepatch/Makefile | 2 ++   tools/testing/selftests/net/mptcp/Makefile | 2 ++   tools/testing/selftests/rseq/Makefile      | 2 ++   tools/testing/selftests/rtc/Makefile       | 2 ++   5 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/Makefile b/tools/testing/selftests/ftrace/Makefile index cd1f5b3a7774..d6e106fbce11 100644 --- a/tools/testing/selftests/ftrace/Makefile +++ b/tools/testing/selftests/ftrace/Makefile @@ -2,7 +2,7 @@   all:   TEST_PROGS := ftracetest -TEST_FILES := test.d +TEST_FILES := test.d settings   EXTRA_CLEAN := $(OUTPUT)/logs/*   include ../lib.mk diff --git a/tools/testing/selftests/livepatch/Makefile b/tools/testing/selftests/livepatch/Makefile index 3876d8d62494..1acc9e1fa3fb 100644 --- a/tools/testing/selftests/livepatch/Makefile +++ b/tools/testing/selftests/livepatch/Makefile @@ -8,4 +8,6 @@ TEST_PROGS := \       test-state.sh \       test-ftrace.sh +TEST_FILES := settings

include ../lib.mk diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile index 93de52016dde..ba450e62dc5b 100644 --- a/tools/testing/selftests/net/mptcp/Makefile +++ b/tools/testing/selftests/net/mptcp/Makefile @@ -8,6 +8,8 @@ TEST_PROGS := mptcp_connect.sh   TEST_GEN_FILES = mptcp_connect +TEST_FILES := settings

EXTRA_CLEAN := *.pcap   include ../../lib.mk diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile index d6469535630a..f1053630bb6f 100644 --- a/tools/testing/selftests/rseq/Makefile +++ b/tools/testing/selftests/rseq/Makefile @@ -19,6 +19,8 @@ TEST_GEN_PROGS_EXTENDED = librseq.so   TEST_PROGS = run_param_test.sh +TEST_FILES := settings

include ../lib.mk   $(OUTPUT)/librseq.so: rseq.c rseq.h rseq-*.h diff --git a/tools/testing/selftests/rtc/Makefile b/tools/testing/selftests/rtc/Makefile index de9c8566672a..90fa1a346908 100644 --- a/tools/testing/selftests/rtc/Makefile +++ b/tools/testing/selftests/rtc/Makefile @@ -6,4 +6,6 @@ TEST_GEN_PROGS = rtctest   TEST_GEN_PROGS_EXTENDED = setdate +TEST_FILES := settings

include ../lib.mk

Looks good to me,

Acked-by: Joe Lawrence joe.lawrence@redhat.com

Thanks for Ack. I already applied it to kselftest fixes branch.

https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/lo...

thanks, -- Shuah

On 2/20/20 10:12 PM, Michael Ellerman wrote:

Shuah Khan skhan@linuxfoundation.org writes:

...

On 2/20/20 3:51 PM, Kees Cook wrote:

...

On Thu, Feb 20, 2020 at 03:42:41PM +1100, Michael Ellerman wrote:

...

Commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") added a 45 second timeout for tests, and also added a way for tests to customise the timeout via a settings file.

For example the ftrace tests take multiple minutes to run, so they were given longer in commit b43e78f65b1d ("tracing/selftests: Turn off timeout setting").

This works when the tests are run from the source tree. However if the tests are installed with "make -C tools/testing/selftests install", the settings files are not copied into the install directory. When the tests are then run from the install directory the longer timeouts are not applied and the tests timeout incorrectly.

Eek, yes, nice catch.

...

So add the settings files to TEST_FILES of the appropriate Makefiles to cause the settings files to be installed using the existing install logic.

Instead, shouldn't lib.mk "notice" the settings file and automatically include it in TEST_FILES instead of having to do this in each separate Makefile?

Let's keep it custom per test for now.

Yeah that seems less magical.

FWIW the patch below does work, so it's a small patch, but I'm not sure it's worth the added complexity vs just listing the file in the few tests that need it.

I am not seeing a whole lot of benefit in doing this in lib.mk Test authors have to think about which files to include in TEST_FILES and add it to Makefile anyway.

My second reason is I would like authors to think about the settings as opposed to just duplicate from another test. This timeout changes the kselftest run-time and behavior.

I am also finding making features generic has downsides to it unless we are smart about it. We have several overrides already for things that made perfect sense to make generic.

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 1c8a1963d03f..82086c6ad5e7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -20,6 +20,10 @@ TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) +ifeq ($(wildcard settings),settings)

•   TEST_FILES += settings
  

+endif

• ifdef KSFT_KHDR_INSTALL top_srcdir ?= ../../../.. include $(top_srcdir)/scripts/subarch.include

Thanks for the patch though. We can consider adding it a later time, if we see value in making this generic.

thanks, -- Shuah