Commit 031d1f20 authored by Dev Jain's avatar Dev Jain Committed by Catalin Marinas
Browse files

kselftest/arm64: Fix redundancy of a testcase 



Currently, we are writing the same value as we read into the TLS
register, hence we cannot confirm update of the register, making the
testcase "verify_tpidr_one" redundant. Fix this.

Signed-off-by: default avatarDev Jain <dev.jain@arm.com>
Reviewed-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240605115448.640717-1-dev.jain@arm.com


[catalin.marinas@arm.com: remove the increment style change]
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent d5859510

tools/testing/selftests/arm64/abi/ptrace.c

+1 −1
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ static void test_tpidr(pid_t child) 


	/* ...write a new value.. */

	write_iov.iov_len = sizeof(uint64_t);

	write_val[0] = read_val[0]++;

	write_val[0] = read_val[0] + 1;

	ret = ptrace(PTRACE_SETREGSET, child, NT_ARM_TLS, &write_iov);

	ksft_test_result(ret == 0, "write_tpidr_one\n");