From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793670797; b=VolDlXobvyQ2BnFXmIAA/vnQ1Rnte61MKhHVkkAtrPkNRJj9e440+hua4wGKf0vS9S0R NRAsTJvzJTKwxBmE3sz6Bj3zOfA3Kn6VV9Tp76qLUgkTYjqg82RnAbjo+W32Fm81k2snq GWtZ5mvA8hcnc8LWWMy8lHJ8gDmu0T1ngRIIuGhq4lSTyK8Xk3zHoio8t2t6o5IfIFt80 xC8NxBywVxRoWY1rgcLJaYerXhORk3WbGJ90HChphCTfQsJLputgIcBLlcsBBQ5NthuoK u0SLmrg1Ag39hM5/9Xqza77qfUzP7d1DXs9XVn6bgCA3bKQEHNYR45DFUhs8nnFucvA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793670797; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=UlpUEFrenUvYGOwRKx3auMBSjT6iYF4syJuT0u+RjW4=; b=dVtSr9a13SKPD/Cilj3UCczhBgQmyJxLETOERKJHdXsdDf0WORHVvrVWPus2o7plRr5q 7LdsscUCYi6WW9kLBByZmjDN3FtWe/xPL9QkU/u69EU7b5O5v3pZyF/bI/rVmp08R9QJZ +Y22zCBvUAtHsKR+EzjmRDJZ/32KVwMHnMJtaECB4/ooRzjvUExi1cxcuszuoD4sUHlhD XeY+ABh0wzt/2j3iUKuvEp0M92E0LdxBHKduruTLb9jB0wOt8LiSNr7bxmme6/CORSYmu co4bupKAtbG1StS5lZD+tW8P1iouzYSIxPtT+L2QyxRoIXDEezcEyymUFwFoi8L7WEA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DQy3OyJV; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D37C8606D82C; Tue, 3 Nov 2026 01:53:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DQy3OyJV Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0AEB1F00A02; Tue, 3 Nov 2026 01:53:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793670796; bh=UlpUEFrenUvYGOwRKx3auMBSjT6iYF4syJuT0u+RjW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DQy3OyJVTqOgEEGeYKWN8K6hRtLOSHzcrMQUFugUpDcNeDGeUgvXq6JoOg4G+6YRv 3UxW89/KgrtCrmc25kE1IwyMSoCHLvShlwsGFwkbCeBFdeETMOdcojgrf8AzLNc2Vi vCuH/C+JvaaXCBNSGEZ82v1RG4KliGyEE3wYBs6alREN57iYCkZEXHvyw1WfCFdLEG gT+4CnYDdMlD8/TuBzLV6mwXvqQB4tCMO6r0Mf6DlXLZo0k+0rhbU/Akg1CnYn52gU RC/zNyPuLTpQxATJNaHNQC/w0pHaWhfEOox6A6+Zo9QY1wmMX3bsW+S8AEQa8UhAJ2 R0KoVNJwehZZw== From: Sasha Levin To: linux-kernel@vger.kernel.org Cc: Chuck Wolber , Julian Braha , linux-kbuild@vger.kernel.org, Marco Elver , Masami Hiramatsu , Nathan Chancellor , Nicolas Schier , Peter Zijlstra , Thomas Gleixner Subject: [PATCH v2 18/20] kconfig: add CC_HAS_CONDITION_COVERAGE for MC/DC support detection Date: Mon, 2 Nov 2026 20:52:36 -0500 Message-ID: <20261103015238.3780910-19-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261103015238.3780910-1-sashal@kernel.org> References: <20261103015238.3780910-1-sashal@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a Kconfig symbol to detect compiler support for -fcondition-coverage, which enables MC/DC (Modified Condition/Decision Coverage) instrumentation. This flag is available since GCC 14. Signed-off-by: Sasha Levin --- scripts/Kconfig.toolchain | 3 +++ 1 file changed, 3 insertions(+) diff --git a/scripts/Kconfig.toolchain b/scripts/Kconfig.toolchain index 2acbd40a38f16..76c1e794d1157 100644 --- a/scripts/Kconfig.toolchain +++ b/scripts/Kconfig.toolchain @@ -188,6 +188,9 @@ config CC_OPT_NO_ALLOW_STORE_DATA_RACES config CC_HAS_MNOP_MCOUNT def_bool $(cc-option,-mnop-mcount) +config CC_HAS_CONDITION_COVERAGE + def_bool $(cc-option,-fcondition-coverage) + config LD_OPT_FORCE_GROUP_ALLOCATION def_string "$(ld-option-str,--force-group-allocation)" -- 2.53.0