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selftests: Emit a warning if getcpu() is missing on 32bit

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The VDSO implementation for getcpu() has been wired up on 32bit so warn if
missing.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20221125094216.3663444-4-bigeasy@linutronix.de
This commit is contained in:
Sebastian Andrzej Siewior 2022-11-25 10:42:16 +01:00 committed by Thomas Gleixner
parent 92d33063c0
commit 5646bbd668
1 changed files with 2 additions and 5 deletions
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7
tools/testing/selftests/x86/test_vsyscall.c
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@ -92,11 +92,8 @@ static void init_vdso(void)
printf("[WARN]\tfailed to find time in vDSO\n");
vdso_getcpu = (getcpu_t)dlsym(vdso, "__vdso_getcpu");
if (!vdso_getcpu) {
/* getcpu() was never wired up in the 32-bit vDSO. */
printf("[%s]\tfailed to find getcpu in vDSO\n",
sizeof(long) == 8 ? "WARN" : "NOTE");
}
if (!vdso_getcpu)
printf("[WARN]\tfailed to find getcpu in vDSO\n");
}
static int init_vsys(void)