Commit f56607e8 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

selftests/timens: Fix gettime_perf to work on powerpc 



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: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/469f37ab91984309eb68c0fb47e8438cdf5b6463.1617198956.git.christophe.leroy@csgroup.eu
parent 92d9d61b

tools/testing/selftests/timens/gettime_perf.c

+8 −0
Original line number Diff line number Diff line
@@ -25,12 +25,20 @@ static void fill_function_pointers(void) 
	if (!vdso)

		vdso = dlopen("linux-gate.so.1",

			      RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);

	if (!vdso)

		vdso = dlopen("linux-vdso32.so.1",

			      RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);

	if (!vdso)

		vdso = dlopen("linux-vdso64.so.1",

			      RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);

	if (!vdso) {

		pr_err("[WARN]\tfailed to find vDSO\n");

		return;

	}



	vdso_clock_gettime = (vgettime_t)dlsym(vdso, "__vdso_clock_gettime");

	if (!vdso_clock_gettime)

		vdso_clock_gettime = (vgettime_t)dlsym(vdso, "__kernel_clock_gettime");

	if (!vdso_clock_gettime)

		pr_err("Warning: failed to find clock_gettime in vDSO\n");