The patch titled
Subject: selftest/vm: clarify error statement in gup_test
has been added to the -mm tree. Its filename is
selftest-vm-clarify-error-statement-in-gup_test.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/selftest-vm-clarify-error-statement-in-gup_test.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/selftest-vm-clarify-error-statement-in-gup_test.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Subject: selftest/vm: clarify error statement in gup_test
Print two possible reasons /sys/kernel/debug/gup_test cannot be opened to
help users of this test diagnose failures.
Link: https://lkml.kernel.org/r/20220330215257.112029-1-sidhartha.kumar@xxxxxxxxxx
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/gup_test.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/vm/gup_test.c~selftest-vm-clarify-error-statement-in-gup_test
+++ a/tools/testing/selftests/vm/gup_test.c
@@ -206,7 +206,9 @@ int main(int argc, char **argv)
gup_fd = open("/sys/kernel/debug/gup_test", O_RDWR);
if (gup_fd == -1) {
- perror("open");
+ perror("failed to open /sys/kernel/debug/gup_test");
+ printf("check if CONFIG_GUP_TEST is enabled in kernel config\n");
+ printf("check if debugfs is mounted at /sys/kernel/debug\n");
exit(1);
}
_
Patches currently in -mm which might be from sidhartha.kumar@xxxxxxxxxx are
selftest-vm-clarify-error-statement-in-gup_test.patch
