From patchwork Wed Oct 23 20:02:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 11207469 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F7A3139A for ; Wed, 23 Oct 2019 20:03:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D8D82086D for ; Wed, 23 Oct 2019 20:03:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VDyBfirf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406282AbfJWUDC (ORCPT ); Wed, 23 Oct 2019 16:03:02 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:38579 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405905AbfJWUC6 (ORCPT ); Wed, 23 Oct 2019 16:02:58 -0400 Received: by mail-pg1-f195.google.com with SMTP id w3so12760182pgt.5; Wed, 23 Oct 2019 13:02:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=qkhxgO5jibnlb7gKc/t5p3Tr0Xmy8V6wC17jmmeP1b0=; b=VDyBfirf7hTX/0XDXtmE+/2SNFRPPiCNMhvOaqZ9MgSmlbI5q39XmbT1oHQZTdd2cT 7KigdNosMVhwjJ3M4bVKZboxHtEU/wOY8VYGZoO6xNkT94Yj6kn/4VqGqNQKEjFlX+bt xI5aPv2t/p0wFu0hEd01w95myRHzbReYji3iknCj8WkJKJ1EX46fQXUtlFveQULjZWFt 7636pZlfaU1sImvN7KkfBdoCHoO5NTra/NeQmeVLtET9DwwaE01MYA4ALGRXsGS0o+Qj haVu96qCtMuPo9+rQoOzgfPkZVxC0bAEU1fD+FURS47wb56DQYZRPgdBzRXHpjL6lrIK PAJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=qkhxgO5jibnlb7gKc/t5p3Tr0Xmy8V6wC17jmmeP1b0=; b=K+97ebz08kbPyJXA5fFHvdkmu8EXpcwtxMs2dqEgOLlOYJ+mlJqWA5LxWt8OH+w4hR pAikzrcCUOoMAnjY8ot+lAX+Xr5KJw4Hye2RNBYpNfq8vNnk8DAwvMPygTwjGokLKZMe J/hsgsJfCZCQPkT4X5r3G8KVj7UsQ1H8vSc5zjYPNQt10keUcejNBJJpu5HGgFvcBFAQ +Irn2WHwRK3CqwJQh6Zq5cz/3k0kHnCF9MhxmG29usHrwLhZcpl3W+IKjOh/JHnFFB4G E2I41y1QKXCs56zYDbemEK6bCFK5wA6dvf52FZx68vMkDGaUFKe7qOp0Pq+zo2mE9QbW VGXQ== X-Gm-Message-State: APjAAAXtFnE0cKYma6rgs4AdWO4WCzgjxLc1/VHzeZnIsKTqhv9mrnnz XIVf4r/heoyy4N5u+XbWiEc= X-Google-Smtp-Source: APXvYqxHlIN2pAAFMCYe9L8Yy42MavOeVtrhlKodtX0YyZgHgWr5v5zWh+4rJ2KwNRnpKQYn540vhQ== X-Received: by 2002:a62:61c4:: with SMTP id v187mr12953291pfb.23.1571860976940; Wed, 23 Oct 2019 13:02:56 -0700 (PDT) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:202:201:3adc:b08c:7acc:b325]) by smtp.gmail.com with ESMTPSA id 6sm10593598pfy.43.2019.10.23.13.02.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Oct 2019 13:02:56 -0700 (PDT) From: Dmitry Torokhov To: "Rafael J. Wysocki" , Heikki Krogerus Cc: Andy Shevchenko , Mika Westerberg , Linus Walleij , Ard Biesheuvel , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: [PATCH v6 11/15] software node: move small properties inline when copying Date: Wed, 23 Oct 2019 13:02:29 -0700 Message-Id: <20191023200233.86616-12-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.23.0.866.gb869b98d4c-goog In-Reply-To: <20191023200233.86616-1-dmitry.torokhov@gmail.com> References: <20191023200233.86616-1-dmitry.torokhov@gmail.com> MIME-Version: 1.0 Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org When copying/duplicating set of properties, move smaller properties that were stored separately directly inside property entry structures. We can move: - up to 8 bytes from U8 arrays - up to 4 words - up to 2 double words - one U64 value - one or 2 strings. Signed-off-by: Dmitry Torokhov --- drivers/base/swnode.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 18a30fb3cc58..49e1108aa4b7 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -280,6 +280,16 @@ static int property_entry_copy_data(struct property_entry *dst, if (!dst->name) goto out_free_data; + if (!dst->is_inline && dst->length <= sizeof(dst->value)) { + /* We have an opportunity to move the data inline */ + const void *tmp = dst->pointer; + + memcpy(&dst->value, tmp, dst->length); + dst->is_inline = true; + + kfree(tmp); + } + return 0; out_free_data: