Commit 5646bbd6 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Thomas Gleixner
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selftests: Emit a warning if getcpu() is missing on 32bit 



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

Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20221125094216.3663444-4-bigeasy@linutronix.de
parent 92d33063

tools/testing/selftests/x86/test_vsyscall.c

+2 −5
Original line number Diff line number Diff line
@@ -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)