From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.216.51 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794363509; b=Qbt2Q1fnMpj5lzB6eUygwtzi/ayEEru1wutwslg9R7enLWAQzHT0vwsf4zEsaTNe68zV NG3NCLHU6dortHi1f7IXUAuSrW7p11ctF/f7n72/ft5OefqfO/L/DC7rOw8k6cDcjUfBB Kh/NS+tCeMhK4UoOex/doEfxoI3ACcn4tnmaVlLsCwVi0DimkUPFMmkCcY8myQY5tP9Gi QlnRlT8WDluoJGCYD1JJXL0t5bGdOXDrawNPZ7ByA7CXlIUnex+3O8kHXTABXA558Ps7S RRnjKJWXoHACKsqcguMfkuqfgGcEFyQs9Zew7FurOhBnU1NOBOK/+4TSlceS7Pc97QQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794363509; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:MIME-Version: Content-Transfer-Encoding; bh=LrJY2Fwepo7894Ql+NtyrHeNRWa8RX4cvLszfyzbChY=; b=lZgqxX8fJoJsM75iXqpfrAwMvStxXLxA+9PF46+9i+TxBGvSxloQMxtd8S0f8TeuSY+j NN7/PRIUENlWrpSpM0Ql2itn9bX0WUAETrfRl117JAjimbywdCxkY6+yxF1SzWzNL+81b 8wHs8IJNm8bYDHBbWyFHdlSoBXyO1CGpCJjn+pol/IfduqGJP23ROdS99Vkg48q72NP3/ ifKS+P+uTB28TGf5jFRACY7Wrt3iWdrKZuRCngcQBa8vdzBM1WeQvk9zvXMHextfr94qA kLywGVIR6Hb0tIBujWRLlihoseGUfk7B4XfOHaMzvBCrxifKgKEWw3CXscUc9c/fYPQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=QTFXJwxw; arc=none smtp.remote-ip=209.85.216.51 Received: from mail-pj1-f51.google.com (mail-pj1-f51.google.com [209.85.216.51]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0FC4B606A327 for ; Wed, 11 Nov 2026 02:18:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 0FC4B606A327 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=QTFXJwxw Received: by mail-pj1-f51.google.com with SMTP id 98e67ed59e1d1-3ae7626d14aso1416587a91.2 for ; Tue, 10 Nov 2026 18:18:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794363508; x=1794968308; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=LrJY2Fwepo7894Ql+NtyrHeNRWa8RX4cvLszfyzbChY=; b=QTFXJwxwMGi3KYiPUC3uGm1ejP9JeD0ap+Sc+8ZKk7AA+OBcdrTjSUDDEQ80ejyupY tnMsX6HSAMgzQmFT6Iu5Ulyf4l14ZD1Zr7JmfVheB3rz6DhdPbG7Lari0K6dMpx3GFu4 yrVSfdBjNtgTdM/fAaEkKnGzFyI2MFr1WprZz1tS7CiNRq5h66zNeQ/HsbmblmiTV/AR 3MFT4TAx5h6bEzcjG3Gdx8QGBDJuOlE/yUFfCxAmlWRI8rSJ5MYrQCI0iVpLUAyDh+xH N4CwaLOKv1KwXRF7RsPnxQdQT1vHhtPJCeV/aF19kPrrPj4gRCFZaXYHzCkWKfIrD+Mp sp3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794363508; x=1794968308; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=LrJY2Fwepo7894Ql+NtyrHeNRWa8RX4cvLszfyzbChY=; b=vNL9BEg24T4S7TudqRyWZcjDPBrmD0XGIjTG6u6GzsvW7MK2t6e1Nf1sKUj/u4WgVq JeoAb8j2hVBxYmXGjJPDnuULL+7dKXa6y3t8Vp1ABWOevT0qc0bWgpoz3N1n5ug6rWGg pr8bZsgIiqtPam0fmg+ejL3IuMOEUSqo2HVo+h8fcM5OxeLwplGGZ5giRZK3Qd615KZT nxpxW896weItx+0uh1oTRwfuAYVwOaKfdyurrNhFYlIqfyNo//EVY9VYm+ZjYExTJ9i6 uB/UUI3ru3KN9Xi7zoEJDX0FDhnHQg0K+vBnoVuOoMxUQNaQpKbVH0xJNEkzsGbVQXo4 u8ig== X-Forwarded-Encrypted: i=1; AL+hErE3fwYvfFABwzE4Ptl+4Hegy3D6YxuVTmVtGTj/Cot7Fa4cVOsE/VpZHPzKn5fMUgRWU7kIvM+En9fj@vger.kernel.org X-Gm-Message-State: APuU4Z++yvz0Pv4puFGDrT5I5A6B5/7LxaO7D3HV9s19+jNzOp1BTBva EjJ/bUQpKYDm26HwHsZocVL5k6BFzFI6Yd4kLlQbmCZO5v7zJMolmF+jimpcUw== X-Gm-Gg: AYBFou2CZKCKCpgQzntxO4VkSMNlWJJAe2CfYOfT3+uhTx4xnwXoOTndoMv4s8x3vgU QRKsa8LxRH5fWamwGnYDPjk1dDcIA0Bz7hs2gWN7JJ0iX4+MOB/BRJnhcYNuMkM9HajVFf0VYDu xn6cjRQyEhCPonB5pfzxASnPgIUh/YMC7aK+nZ+OMDo6w8wDxVPaItlBzuaVqNOnKOUc7wAJ4CJ V6814ZVp3wGwgu2mdiblzvHpBp3sUNB74kFEv6JQL8GcNOP4QzMNLcVoWhxDiTomnA/xn5fB4bS HhUvjYok65L5tpGPGKVHwUDUH3KbcKWWWp4sfYfWSdM9iD4W+4TqhsofhxweDkRSkl24NoAvMy2 toT1H6UXEfKrRv8cEr92ytyMjDESQKykVvlrR0RGb03nUDI+qaxbW6tPYwwJYzZSz1Zb9SA3AR2 e/47wRT5GeT0pcOMRr9MsQTlMQlXGCGtq/fKjvQTH0OIe3/lz7lAsfaCvcxfyZqaTu4NZyRAB8d o6JO/8la+bWPrHgkDtz+JJc9Mv0+F5kv6++z3JQbHNAlT9BOtzuB1Sfr4dqBcHFESUgaY9PmCo6 XFjkVUDmhbSoGWuNZ9TKPNp4AczRPJv5FgoeSNkYdjyea1nQdYHeRFsWGViIZlJro91RiKuVfBS V6uTrOJbhdEMTPT0/S3ndRm20GqQ0tyHKE8oVII4e14Rny4FI1AX5ZYdxOgmqES6IIicVG7GxWk somFqQGDBtTiSHdjiLyka4ZMiJ X-Received: by 2002:a17:90b:4c50:b0:3b1:6cab:f68b with SMTP id 98e67ed59e1d1-3b182ec2051mr1060564a91.11.1794363508275; Tue, 10 Nov 2026 18:18:28 -0800 (PST) Received: from ryzen.lan ([2601:644:8000:37f::e34]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b17db9d1fbsm2034540a91.15.2026.11.10.18.18.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2026 18:18:27 -0800 (PST) From: Rosen Penev To: Borislav Petkov , Tony Luck , Kees Cook Cc: "Gustavo A. R. Silva" , linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH v2] EDAC/ecs: simplify allocation for context Date: Tue, 10 Nov 2026 18:18:08 -0800 Message-ID: <20261111021808.60779-1-rosenp@gmail.com> X-Mailer: git-send-email 2.56.0 X-Mailing-List: linux-edac@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 Use a flexible array member to combine allocations Add __counted_by for extra runtime analysis. Signed-off-by: Rosen Penev --- v2: use devm_kzalloc_flex drivers/edac/ecs.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/edac/ecs.c b/drivers/edac/ecs.c index 332872d4214c..e7f7e189cc76 100644 --- a/drivers/edac/ecs.c +++ b/drivers/edac/ecs.c @@ -33,7 +33,7 @@ struct edac_ecs_fru_context { struct edac_ecs_context { u16 num_media_frus; - struct edac_ecs_fru_context *fru_ctxs; + struct edac_ecs_fru_context fru_ctxs[] __counted_by(num_media_frus); }; #define TO_ECS_DEV_ATTR(_dev_attr) \ @@ -149,16 +149,11 @@ static int ecs_create_desc(struct device *ecs_dev, const struct attribute_group struct edac_ecs_context *ecs_ctx; u32 fru; - ecs_ctx = devm_kzalloc_obj(ecs_dev, *ecs_ctx); + ecs_ctx = devm_kzalloc_flex(ecs_dev, *ecs_ctx, fru_ctxs, num_media_frus); if (!ecs_ctx) return -ENOMEM; ecs_ctx->num_media_frus = num_media_frus; - ecs_ctx->fru_ctxs = devm_kzalloc_objs(ecs_dev, *ecs_ctx->fru_ctxs, - num_media_frus); - if (!ecs_ctx->fru_ctxs) - return -ENOMEM; - for (fru = 0; fru < num_media_frus; fru++) { struct edac_ecs_fru_context *fru_ctx = &ecs_ctx->fru_ctxs[fru]; struct attribute_group *group = &fru_ctx->group; -- 2.56.0