From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E53872BDC26; Mon, 4 May 2026 06:28:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777876090; cv=none; b=IPqO0+QBayVyvW1u4aAfINLR3dPjK7SjFMs7Ol6TOw4xmUiE5ExEnug7B7zg8/wv/3TY76MRK6mRAHtph9tU1CxQ09193nw/lzWwxc9/BbMBz5r/imlEIMebPhY3sgv95HvQ2MjKNS2X/27AqJTZ1e24bOgN6xbQBarT4K5QO2E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777876090; c=relaxed/simple; bh=qIT8FxWnOR2qaYY/hOXxZD3u9KGZymYUm3k2NcPFvpU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=d1IB3p2DUdrcP2y9eyphwUG93dbX7/+E7YTCcqq+HUOtG08Iye31cm8w+taz3lozdnIfED+n0ULHvcG8CqKfWW9qWVowmj62Wu/M8Dx/gprsb9r8tByZv/sJRz20T5CrWF2x5Ali5klPbNcFfAGJkBbIE0EqagD+b07RdFMKMB8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gwmAd4zG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gwmAd4zG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3EB04C2BCF4; Mon, 4 May 2026 06:28:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777876089; bh=qIT8FxWnOR2qaYY/hOXxZD3u9KGZymYUm3k2NcPFvpU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gwmAd4zGCnXm4vWfyAlKNfzKYeBjePxxo0QJofx/wWkVW1hegBSjBlnTmUmbDzJuc xJUtKkvSFIJDiMCi2skNk+QUcnH78cr8xAn/yMaHSsuWXV1Ei53Dv20xDYuDpwU2UK XH6cZx5HHpjE6bI1QkXd0c4S9QV/lCd8/9JPjn63kMvsPvHVDzPoiraKVTs0G+68X1 kcwMqDdPRgtDOHkLiRdiDN63/vrijPCp5JJEAUIRKoIzttDKXrJRiiLGCdIR7MEKd5 DhpsI1SbMvcdDDjMQWxBINtAcOQkwZnLcI4/A6UuNBz0fnfstREIp5ZcZUCaRO2J6L 7NlA/3GKiVmIg== From: Namhyung Kim To: Arnaldo Carvalho de Melo , Ian Rogers , James Clark Cc: Jiri Olsa , Adrian Hunter , Peter Zijlstra , Ingo Molnar , LKML , linux-perf-users@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH v2 2/3] perf build: Add -fms-extensions for GEN_VMLINUX_H=1 Date: Sun, 3 May 2026 23:27:57 -0700 Message-ID: <20260504062758.92001-2-namhyung@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260504062758.92001-1-namhyung@kernel.org> References: <20260504062758.92001-1-namhyung@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On my system, `make GEN_VMLINUX_H=1` fails with a lot of error messages like below: ./util/bpf_skel/vmlinux.h:134488:4: error: declaration does not declare anything [-Werror,-Wmissing-declarations] 134488 | struct freelist_counters; | ^~~~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [Makefile.perf:1249: linux/tools/perf/util/bpf_skel/.tmp/lock_contention.bpf.o] Error 1 I saw commit 835a50753579a ("selftests/bpf: Add -fms-extensions to bpf build flags") also added the same flags to bpf programs. Cc: bpf@vger.kernel.org Signed-off-by: Namhyung Kim --- v2) use -fms-extensions and -Wno-microsoft-anon-tag (Sashiko) tools/perf/Makefile.perf | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index cee19c923c0607d2..0aba14f22a06f7a6 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -1249,6 +1249,7 @@ $(SKEL_TMP_OUT)/%.bpf.o: util/bpf_skel/%.bpf.c $(LIBBPF) $(SKEL_OUT)/vmlinux.h $(QUIET_CLANG)$(CLANG) -g -O2 -fno-stack-protector --target=bpf \ $(CLANG_OPTIONS) $(EXTRA_BPF_FLAGS) $(BPF_INCLUDE) $(TOOLS_UAPI_INCLUDE) \ -include $(OUTPUT)PERF-VERSION-FILE -include util/bpf_skel/perf_version.h \ + -fms-extensions -Wno-microsoft-anon-tag \ -c $(filter util/bpf_skel/%.bpf.c,$^) -o $@ $(SKEL_OUT)/%.skel.h: $(SKEL_TMP_OUT)/%.bpf.o | $(BPFTOOL) -- 2.53.0