Re: [PATCH v5 44/68] selftests/powerpc: Drop define _GNU_SOURCE

From: Michael Ellerman
Date: Wed May 22 2024 - 07:39:29 EST

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In reply to: Edward Liaw: "[PATCH v5 44/68] selftests/powerpc: Drop define _GNU_SOURCE"
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Edward Liaw <edliaw@xxxxxxxxxx> writes:
> _GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent
> redefinition warnings.

Most of these tests build with -Werror, so the duplicate define is
actually a hard error. Can you put this patch earlier in the series at
least?

cheers

> Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
> ---
> tools/testing/selftests/powerpc/benchmarks/context_switch.c | 2 --
> tools/testing/selftests/powerpc/benchmarks/exec_target.c | 2 --
> tools/testing/selftests/powerpc/benchmarks/fork.c | 2 --
> tools/testing/selftests/powerpc/benchmarks/futex_bench.c | 3 ---
> tools/testing/selftests/powerpc/dexcr/hashchk_test.c | 3 ---
> tools/testing/selftests/powerpc/dscr/dscr_default_test.c | 3 ---
> tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c | 3 ---
> tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c | 1 -
> tools/testing/selftests/powerpc/mm/exec_prot.c | 2 --
> tools/testing/selftests/powerpc/mm/pkey_exec_prot.c | 2 --
> tools/testing/selftests/powerpc/mm/pkey_siginfo.c | 2 --
> tools/testing/selftests/powerpc/mm/tlbie_test.c | 2 --
> tools/testing/selftests/powerpc/papr_vpd/papr_vpd.c | 1 -
> tools/testing/selftests/powerpc/pmu/count_instructions.c | 3 ---
> tools/testing/selftests/powerpc/pmu/count_stcx_fail.c | 3 ---
> tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 3 ---
> .../testing/selftests/powerpc/pmu/ebb/instruction_count_test.c | 3 ---
> tools/testing/selftests/powerpc/pmu/event.c | 2 --
> tools/testing/selftests/powerpc/pmu/lib.c | 3 ---
> tools/testing/selftests/powerpc/pmu/per_event_excludes.c | 3 ---
> tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c | 3 ---
> tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c | 2 --
> tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c | 1 -
> tools/testing/selftests/powerpc/signal/sigreturn_kernel.c | 3 ---
> tools/testing/selftests/powerpc/signal/sigreturn_vdso.c | 3 ---
> tools/testing/selftests/powerpc/syscalls/ipc_unmuxed.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-exec.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-poison.c | 2 --
> .../testing/selftests/powerpc/tm/tm-signal-context-force-tm.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-tmspr.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-trap.c | 2 --
> tools/testing/selftests/powerpc/tm/tm-unavailable.c | 2 --
> tools/testing/selftests/powerpc/utils.c | 3 ---
> 34 files changed, 79 deletions(-)
>
> diff --git a/tools/testing/selftests/powerpc/benchmarks/context_switch.c b/tools/testing/selftests/powerpc/benchmarks/context_switch.c
> index 96554e2794d1..0b245572bd45 100644
> --- a/tools/testing/selftests/powerpc/benchmarks/context_switch.c
> +++ b/tools/testing/selftests/powerpc/benchmarks/context_switch.c
> @@ -4,8 +4,6 @@
> *
> * Copyright (C) 2015 Anton Blanchard <anton@xxxxxxxxxx>, IBM
> */
> -
> -#define _GNU_SOURCE
> #include <errno.h>
> #include <sched.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/benchmarks/exec_target.c b/tools/testing/selftests/powerpc/benchmarks/exec_target.c
> index c14b0fc1edde..8646540037d8 100644
> --- a/tools/testing/selftests/powerpc/benchmarks/exec_target.c
> +++ b/tools/testing/selftests/powerpc/benchmarks/exec_target.c
> @@ -5,8 +5,6 @@
> *
> * Copyright 2018, Anton Blanchard, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> #include <unistd.h>
> #include <sys/syscall.h>
>
> diff --git a/tools/testing/selftests/powerpc/benchmarks/fork.c b/tools/testing/selftests/powerpc/benchmarks/fork.c
> index d312e638cb37..327231646a2a 100644
> --- a/tools/testing/selftests/powerpc/benchmarks/fork.c
> +++ b/tools/testing/selftests/powerpc/benchmarks/fork.c
> @@ -5,8 +5,6 @@
> *
> * Copyright 2018, Anton Blanchard, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> #include <assert.h>
> #include <errno.h>
> #include <getopt.h>
> diff --git a/tools/testing/selftests/powerpc/benchmarks/futex_bench.c b/tools/testing/selftests/powerpc/benchmarks/futex_bench.c
> index 017057090490..0483a13c88f9 100644
> --- a/tools/testing/selftests/powerpc/benchmarks/futex_bench.c
> +++ b/tools/testing/selftests/powerpc/benchmarks/futex_bench.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2016, Anton Blanchard, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <stdio.h>
> #include <sys/syscall.h>
> #include <time.h>
> diff --git a/tools/testing/selftests/powerpc/dexcr/hashchk_test.c b/tools/testing/selftests/powerpc/dexcr/hashchk_test.c
> index 645224bdc142..2499ab7fe563 100644
> --- a/tools/testing/selftests/powerpc/dexcr/hashchk_test.c
> +++ b/tools/testing/selftests/powerpc/dexcr/hashchk_test.c
> @@ -1,7 +1,4 @@
> // SPDX-License-Identifier: GPL-2.0+
> -
> -#define _GNU_SOURCE
> -
> #include <errno.h>
> #include <fcntl.h>
> #include <limits.h>
> diff --git a/tools/testing/selftests/powerpc/dscr/dscr_default_test.c b/tools/testing/selftests/powerpc/dscr/dscr_default_test.c
> index 60ab02525b79..fe6aff1e5dad 100644
> --- a/tools/testing/selftests/powerpc/dscr/dscr_default_test.c
> +++ b/tools/testing/selftests/powerpc/dscr/dscr_default_test.c
> @@ -9,9 +9,6 @@
> * Copyright 2012, Anton Blanchard, IBM Corporation.
> * Copyright 2015, Anshuman Khandual, IBM Corporation.
> */
> -
> -#define _GNU_SOURCE
> -
> #include "dscr.h"
>
> #include <pthread.h>
> diff --git a/tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c b/tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c
> index e2268e9183a8..93b6efdc2eef 100644
> --- a/tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c
> +++ b/tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c
> @@ -15,9 +15,6 @@
> * Copyright 2012, Anton Blanchard, IBM Corporation.
> * Copyright 2015, Anshuman Khandual, IBM Corporation.
> */
> -
> -#define _GNU_SOURCE
> -
> #include "dscr.h"
> #include "utils.h"
>
> diff --git a/tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c b/tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c
> index 191ed126f118..ace7d23492c1 100644
> --- a/tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c
> +++ b/tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c
> @@ -9,7 +9,6 @@
> *
> * Copyright 2015, Anshuman Khandual, IBM Corporation.
> */
> -#define _GNU_SOURCE
> #include "dscr.h"
>
> static int test_thread_dscr(unsigned long val)
> diff --git a/tools/testing/selftests/powerpc/mm/exec_prot.c b/tools/testing/selftests/powerpc/mm/exec_prot.c
> index db75b2225de1..65712597cc68 100644
> --- a/tools/testing/selftests/powerpc/mm/exec_prot.c
> +++ b/tools/testing/selftests/powerpc/mm/exec_prot.c
> @@ -6,8 +6,6 @@
> *
> * Test if applying execute protection on pages works as expected.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/mm/pkey_exec_prot.c b/tools/testing/selftests/powerpc/mm/pkey_exec_prot.c
> index 0af4f02669a1..5cf72cd9694d 100644
> --- a/tools/testing/selftests/powerpc/mm/pkey_exec_prot.c
> +++ b/tools/testing/selftests/powerpc/mm/pkey_exec_prot.c
> @@ -6,8 +6,6 @@
> * Test if applying execute protection on pages using memory
> * protection keys works as expected.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/mm/pkey_siginfo.c b/tools/testing/selftests/powerpc/mm/pkey_siginfo.c
> index 2db76e56d4cb..fcaa591abf88 100644
> --- a/tools/testing/selftests/powerpc/mm/pkey_siginfo.c
> +++ b/tools/testing/selftests/powerpc/mm/pkey_siginfo.c
> @@ -8,8 +8,6 @@
> * attempted to be protected by two different keys from two competing
> * threads at the same time.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/mm/tlbie_test.c b/tools/testing/selftests/powerpc/mm/tlbie_test.c
> index 48344a74b212..512cd405de92 100644
> --- a/tools/testing/selftests/powerpc/mm/tlbie_test.c
> +++ b/tools/testing/selftests/powerpc/mm/tlbie_test.c
> @@ -14,8 +14,6 @@
> * and copy it back to the original area. This helps us to detect if any
> * store continued to happen after we marked the memory PROT_READ.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <sys/mman.h>
> #include <sys/types.h>
> diff --git a/tools/testing/selftests/powerpc/papr_vpd/papr_vpd.c b/tools/testing/selftests/powerpc/papr_vpd/papr_vpd.c
> index d6f99eb9be65..0b9b20668fa4 100644
> --- a/tools/testing/selftests/powerpc/papr_vpd/papr_vpd.c
> +++ b/tools/testing/selftests/powerpc/papr_vpd/papr_vpd.c
> @@ -1,5 +1,4 @@
> // SPDX-License-Identifier: GPL-2.0-only
> -#define _GNU_SOURCE
> #include <errno.h>
> #include <fcntl.h>
> #include <stdlib.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/count_instructions.c b/tools/testing/selftests/powerpc/pmu/count_instructions.c
> index a3984ef1e96a..57d63ff75397 100644
> --- a/tools/testing/selftests/powerpc/pmu/count_instructions.c
> +++ b/tools/testing/selftests/powerpc/pmu/count_instructions.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2013, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <stdio.h>
> #include <stdbool.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c
> index 2070a1e2b3a5..5d3bbd38528d 100644
> --- a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c
> +++ b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c
> @@ -2,9 +2,6 @@
> * Copyright 2013, Michael Ellerman, IBM Corp.
> * Licensed under GPLv2.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <stdio.h>
> #include <stdbool.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
> index 21537d6eb6b7..e99a455e8c2e 100644
> --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
> +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2014, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE /* For CPU_ZERO etc. */
> -
> #include <sched.h>
> #include <sys/wait.h>
> #include <setjmp.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/ebb/instruction_count_test.c b/tools/testing/selftests/powerpc/pmu/ebb/instruction_count_test.c
> index eed338b18e11..ab3f888922d6 100644
> --- a/tools/testing/selftests/powerpc/pmu/ebb/instruction_count_test.c
> +++ b/tools/testing/selftests/powerpc/pmu/ebb/instruction_count_test.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2014, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <stdio.h>
> #include <stdbool.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/event.c b/tools/testing/selftests/powerpc/pmu/event.c
> index 0c1c1bdba081..5468bd2c3c5b 100644
> --- a/tools/testing/selftests/powerpc/pmu/event.c
> +++ b/tools/testing/selftests/powerpc/pmu/event.c
> @@ -2,8 +2,6 @@
> /*
> * Copyright 2013, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> #include <unistd.h>
> #include <sys/syscall.h>
> #include <string.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/lib.c b/tools/testing/selftests/powerpc/pmu/lib.c
> index 321357987408..fa208701dbdc 100644
> --- a/tools/testing/selftests/powerpc/pmu/lib.c
> +++ b/tools/testing/selftests/powerpc/pmu/lib.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2014, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE /* For CPU_ZERO etc. */
> -
> #include <errno.h>
> #include <sched.h>
> #include <setjmp.h>
> diff --git a/tools/testing/selftests/powerpc/pmu/per_event_excludes.c b/tools/testing/selftests/powerpc/pmu/per_event_excludes.c
> index ad32a09a6540..066e0c4799fd 100644
> --- a/tools/testing/selftests/powerpc/pmu/per_event_excludes.c
> +++ b/tools/testing/selftests/powerpc/pmu/per_event_excludes.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2014, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <elf.h>
> #include <limits.h>
> #include <stdio.h>
> diff --git a/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c b/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c
> index e374c6b7ace6..1f7e3c63742d 100644
> --- a/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c
> +++ b/tools/testing/selftests/powerpc/ptrace/perf-hwbreak.c
> @@ -16,9 +16,6 @@
> *
> * Copyright (C) 2018 Michael Neuling, IBM Corporation.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <unistd.h>
> #include <assert.h>
> #include <sched.h>
> diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c b/tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c
> index 3353210dcdbd..6e5294c1b60b 100644
> --- a/tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c
> +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-syscall.c
> @@ -8,8 +8,6 @@
> * test, and it was adapted to run on Powerpc by
> * Breno Leitao <leitao@xxxxxxxxxx>
> */
> -#define _GNU_SOURCE
> -
> #include <sys/ptrace.h>
> #include <sys/types.h>
> #include <sys/wait.h>
> diff --git a/tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c b/tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c
> index e3972264615b..8bad5e65bbb7 100644
> --- a/tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c
> +++ b/tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c
> @@ -18,7 +18,6 @@
> * that sucker at the same time. Same for multiple signals of any kind
> * interrupting that sucker on 64bit...
> */
> -#define _GNU_SOURCE
> #include <sys/types.h>
> #include <sys/wait.h>
> #include <sys/syscall.h>
> diff --git a/tools/testing/selftests/powerpc/signal/sigreturn_kernel.c b/tools/testing/selftests/powerpc/signal/sigreturn_kernel.c
> index 0a1b6e591eee..772c3373560f 100644
> --- a/tools/testing/selftests/powerpc/signal/sigreturn_kernel.c
> +++ b/tools/testing/selftests/powerpc/signal/sigreturn_kernel.c
> @@ -2,9 +2,6 @@
> /*
> * Test that we can't sigreturn to kernel addresses, or to kernel mode.
> */
> -
> -#define _GNU_SOURCE
> -
> #include <stdio.h>
> #include <signal.h>
> #include <stdlib.h>
> diff --git a/tools/testing/selftests/powerpc/signal/sigreturn_vdso.c b/tools/testing/selftests/powerpc/signal/sigreturn_vdso.c
> index e282fff0fe25..d5aecd2c4b95 100644
> --- a/tools/testing/selftests/powerpc/signal/sigreturn_vdso.c
> +++ b/tools/testing/selftests/powerpc/signal/sigreturn_vdso.c
> @@ -5,9 +5,6 @@
> *
> * See handle_rt_signal64() and setup_trampoline() in signal_64.c
> */
> -
> -#define _GNU_SOURCE
> -
> #include <errno.h>
> #include <stdio.h>
> #include <signal.h>
> diff --git a/tools/testing/selftests/powerpc/syscalls/ipc_unmuxed.c b/tools/testing/selftests/powerpc/syscalls/ipc_unmuxed.c
> index 4c582524aeb3..a49c699d86d4 100644
> --- a/tools/testing/selftests/powerpc/syscalls/ipc_unmuxed.c
> +++ b/tools/testing/selftests/powerpc/syscalls/ipc_unmuxed.c
> @@ -5,8 +5,6 @@
> * This test simply tests that certain syscalls are implemented. It doesn't
> * actually exercise their logic in any way.
> */
> -
> -#define _GNU_SOURCE
> #include <errno.h>
> #include <stdio.h>
> #include <unistd.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-exec.c b/tools/testing/selftests/powerpc/tm/tm-exec.c
> index c59919d6710d..8cfc859dcf37 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-exec.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-exec.c
> @@ -8,8 +8,6 @@
> * It makes little sense for after an exec() call for the previously
> * suspended transaction to still exist.
> */
> -
> -#define _GNU_SOURCE
> #include <errno.h>
> #include <inttypes.h>
> #include <libgen.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-poison.c b/tools/testing/selftests/powerpc/tm/tm-poison.c
> index a7bbf034b5bb..1b3a596a6a51 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-poison.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-poison.c
> @@ -11,8 +11,6 @@
> * present child's poison will leak into parent's f31 or vr31 registers,
> * otherwise, poison will never leak into parent's f31 and vr31 registers.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c
> index 421cb082f6be..f28ba2828df6 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c
> @@ -15,8 +15,6 @@
> * This test never fails (as returning EXIT_FAILURE). It either succeeds,
> * or crash the kernel (on a buggy kernel).
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <signal.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
> index 06b801906f27..73f8e7dd5a1a 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c
> @@ -8,8 +8,6 @@
> * It returns from the signal handler with the CPU at suspended state, but
> * without setting usercontext MSR Transaction State (TS) fields.
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <signal.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-tmspr.c b/tools/testing/selftests/powerpc/tm/tm-tmspr.c
> index dd5ddffa28b7..01118f7db1b2 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-tmspr.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-tmspr.c
> @@ -22,8 +22,6 @@
> * (b) abort transaction
> * (c) check TEXASR to see if FS has been corrupted
> */
> -
> -#define _GNU_SOURCE
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-trap.c b/tools/testing/selftests/powerpc/tm/tm-trap.c
> index 97cb74768e30..164b345b5bd3 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-trap.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-trap.c
> @@ -26,8 +26,6 @@
> * the endianness is verified on subsequent traps to determine if the
> * endianness "flipped back" to the native endianness (BE).
> */
> -
> -#define _GNU_SOURCE
> #include <error.h>
> #include <stdio.h>
> #include <stdlib.h>
> diff --git a/tools/testing/selftests/powerpc/tm/tm-unavailable.c b/tools/testing/selftests/powerpc/tm/tm-unavailable.c
> index 6bf1b65b020d..712267831112 100644
> --- a/tools/testing/selftests/powerpc/tm/tm-unavailable.c
> +++ b/tools/testing/selftests/powerpc/tm/tm-unavailable.c
> @@ -13,8 +13,6 @@
> * corruption, but only for registers vs0 and vs32, which are respectively
> * representatives of FP and VEC/Altivec reg sets.
> */
> -
> -#define _GNU_SOURCE
> #include <error.h>
> #include <stdio.h>
> #include <stdlib.h>
> diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c
> index e5f2d8735c64..664722a01636 100644
> --- a/tools/testing/selftests/powerpc/utils.c
> +++ b/tools/testing/selftests/powerpc/utils.c
> @@ -2,9 +2,6 @@
> /*
> * Copyright 2013-2015, Michael Ellerman, IBM Corp.
> */
> -
> -#define _GNU_SOURCE /* For CPU_ZERO etc. */
> -
> #include <elf.h>
> #include <errno.h>
> #include <fcntl.h>
> --
> 2.45.1.288.g0e0cd299f1-goog

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