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2015-05-26selftests: Add futex functional testsDarren Hart15-0/+1889
The futextest testsuite [1] provides functional, stress, and performance tests for the various futex op codes. Those tests will be of more use to futex developers if they are included with the kernel source. Copy the core infrastructure and the functional tests into selftests, but adapt them for inclusion in the kernel: - Update the Makefile to include the run_tests target, remove reference to the performance and stress tests from the contributed sources. - Replace my dead IBM email address with my current Intel email address. - Remove the warrantee and write-to paragraphs from the license blurbs. - Remove the NAME section as the filename is easily determined. ;-) - Make the whitespace usage consistent in a couple of places. - Cleanup various CodingStyle violations. A future effort will explore moving the performance and stress tests into the kernel. 1. http://git.kernel.org/cgit/linux/kernel/git/dvhart/futextest.git Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: linux-api@vger.kernel.org Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26kselftests: timers: Check _ALARM clockids are supported before suspendingJohn Stultz1-1/+5
It was reported that the alarmtimer-suspend test hangs on older systems that don't support _ALARM clockids. This is due to the fact that we don't check if the timer_create fails, and thus when we suspend, the system will not programatically resume. Fix this by checking the timer_create call for errors. Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26kselftests: timers: Ease alarmtimer-suspend unreasonable latency valueJohn Stultz1-1/+1
On the hardware I have, resume latency from an alarm is often 2-3 seconds (with a fair amount of variability due to the RTC's single second granularity). Having four seconds be the pass/fail bar is maybe a little too tight, so extend this to 5 seconds. Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26kselftests: timers: Increase delay between suspends in alarmtimer-suspendJohn Stultz1-1/+1
When testing on some hardware, waiting only a second before re-triggering suspend can keep TCP connections from re-establishing which after a number of cycles can cause TCP connections to close while the test is running. So extend the delay between suspend calls to 3 seconds to let the connections stay alive. Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26selftests/exec: do not install subdir as it is already createdTyler Baker1-1/+1
Remove subdir from DEPS as it is already created at runtime. Without this, make install fails. Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Tyler Baker <tyler.baker@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26selftests/ftrace: install test.dTyler Baker1-0/+1
The ftrace test requires the directory test.d and all of it's contents to be present during execution. Use TEST_DIRS to ensure this is copied to the INSTALL_PATH. Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Tyler Baker <tyler.baker@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26selftests: copy TEST_DIRS to INSTALL_PATHTyler Baker1-0/+3
Loop over all TEST_DIRS and recursively copy them to the INSTALL_PATH. Tests such as ftrace require a directory and all of it's contents to execute the test properly, thus these directories and files need to be copied when we perform an install. Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Tyler Baker <tyler.baker@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26Test compaction of mlocked memorySri Jayaramappa3-1/+243
Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages") introduced a sysctl that allows userspace to enable scanning of locked pages for compaction. This patch introduces a new test which fragments main memory and attempts to allocate a number of huge pages to exercise this compaction logic. Tested on machines with up to 32 GB RAM. With the patch a much larger number of huge pages can be allocated than on the kernel without the patch. Example output: On a machine with 16 GB RAM: sudo make run_tests vm ... ----------------------- running compaction_test ----------------------- No of huge pages allocated = 3834 [PASS] ... Signed-off-by: Sri Jayaramappa <sjayaram@akamai.com> Cc: linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Eric B Munson <emunson@akamai.com> Reviewed-by: Eric B Munson <emunson@akamai.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26selftests/mount: output WARN messages when mount test skippedZhang Zhen1-1/+6
If /proc/self/uid_map doesn't exist, mount test case exits wthout any warning. Fix it to print a warning that the test is skipped because /proc/self/uid_map doesn't exist. Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>