linux-toradex.git/tools/testing/selftests/timens/gettime_perf.c, branch v6.3 Linux kernel for Apalis and Colibri modules selftests/timens: Fix gettime_perf to work on powerpc 2021-04-21T12:52:32+00:00 Christophe Leroy christophe.leroy@csgroup.eu 2021-03-31T13:59:17+00:00 f56607e85ee38f2a5bb7096e24e2d40f35d714f9 On powerpc: - VDSO library is named linux-vdso32.so.1 or linux-vdso64.so.1 - clock_gettime is named __kernel_clock_gettime() Ensure gettime_perf tries these names before giving up. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/469f37ab91984309eb68c0fb47e8438cdf5b6463.1617198956.git.christophe.leroy@csgroup.eu 
On powerpc:
- VDSO library is named linux-vdso32.so.1 or linux-vdso64.so.1
- clock_gettime is named __kernel_clock_gettime()

Ensure gettime_perf tries these names before giving up.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/469f37ab91984309eb68c0fb47e8438cdf5b6463.1617198956.git.christophe.leroy@csgroup.eu
selftests/timens: Add a simple perf test for clock_gettime() 2020-01-14T11:21:02+00:00 Andrei Vagin avagin@gmail.com 2019-11-12T01:27:22+00:00 1854b97e4fa6a476d5cdc3dc30c42e1528699f87 Output on success: 1..4 ok 1 host: clock: monotonic cycles: 148323947 ok 2 host: clock: boottime cycles: 148577503 ok 3 ns: clock: monotonic cycles: 137659217 ok 4 ns: clock: boottime cycles: 137959154 # Pass 4 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0 Output with lack of permissions: 1..4 ok 1 host: clock: monotonic cycles: 145671139 ok 2 host: clock: boottime cycles: 146958357 not ok 3 # SKIP need to run as root Output without support of time namespaces: 1..4 ok 1 host: clock: monotonic cycles: 145671139 ok 2 host: clock: boottime cycles: 146958357 not ok 3 # SKIP Time namespaces are not supported Co-developed-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20191112012724.250792-34-dima@arista.com 
Output on success:
1..4
 ok 1 host:	clock:  monotonic	cycles:	 148323947
 ok 2 host:	clock:   boottime	cycles:	 148577503
 ok 3 ns:	clock:  monotonic	cycles:	 137659217
 ok 4 ns:	clock:   boottime	cycles:	 137959154
 # Pass 4 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output with lack of permissions:
 1..4
 ok 1 host:	clock:  monotonic	cycles:	 145671139
 ok 2 host:	clock:   boottime	cycles:	 146958357
 not ok 3 # SKIP need to run as root

Output without support of time namespaces:
 1..4
 ok 1 host:	clock:  monotonic	cycles:	 145671139
 ok 2 host:	clock:   boottime	cycles:	 146958357
 not ok 3 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-34-dima@arista.com