From patchwork Sat Mar 21 21:18:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 11451435 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 74E3817E6 for ; Sat, 21 Mar 2020 21:18:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 496C72077D for ; Sat, 21 Mar 2020 21:18:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="Gw3hmepN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727870AbgCUVSG (ORCPT ); Sat, 21 Mar 2020 17:18:06 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:45880 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726539AbgCUVSG (ORCPT ); Sat, 21 Mar 2020 17:18:06 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 48lD574XkqzK5; Sat, 21 Mar 2020 22:18:03 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1584825483; bh=vrZRh7eAdTcfBWVzbyScvRG6/GLZAZa/KYnPPbOOPro=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=Gw3hmepNoxoA9sNKMESYnHiG1OYTFE9o/ntyExdk4Lxb5UOYaOH8SnQ0kR8m8W+UT E5yAqmDv//o+xWqlXn2lXfoebClJhPuJuDDxsIY33v3UpaIseCAArFV3ROJbjEv9y9 7rVwmdAmvlFquSIKJv9fzD3OLun/ZXlJ0xGu6TLtDmayXzpO0N03Aalwyk2Zb46BYq cnRRF25/yyX5yeNq/nFx0fOiGQQweKDhXyRso3/Mio9yinkJhK9Ow3GzaEe2Ih5Kjx MYEv2zvids80L06UPldVvhS9DnBYb/Ka4Wb3sMvcZp6rjRQNGzegNuOSLaUhecZ5AS Uv3KLBYVysjfg== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.2 at mail Date: Sat, 21 Mar 2020 22:18:03 +0100 Message-Id: <6bcb44850d9b0068d7ad9de7639c6bd6be509cc8.1584825247.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v3 1/3] clk: at91: optimize pmc data allocation MIME-Version: 1.0 To: Ludovic Desroches , Alexandre Belloni , Michael Turquette , Nicolas Ferre , Stephen Boyd Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Alloc whole data structure in one block. This makes the code shorter, more efficient and easier to extend in following patch. Signed-off-by: Michał Mirosław --- v2: rebase and update to clk/clk-at91 branch v3: use struct_size() and C99 trailing array as suggested by Stephen Boyd --- drivers/clk/at91/at91rm9200.c | 2 +- drivers/clk/at91/at91sam9260.c | 2 +- drivers/clk/at91/at91sam9g45.c | 2 +- drivers/clk/at91/at91sam9n12.c | 2 +- drivers/clk/at91/at91sam9rl.c | 2 +- drivers/clk/at91/at91sam9x5.c | 2 +- drivers/clk/at91/pmc.c | 34 ++++++++-------------------------- drivers/clk/at91/pmc.h | 3 ++- drivers/clk/at91/sam9x60.c | 2 +- drivers/clk/at91/sama5d2.c | 2 +- drivers/clk/at91/sama5d3.c | 2 +- drivers/clk/at91/sama5d4.c | 2 +- 12 files changed, 20 insertions(+), 37 deletions(-) diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c index c44a431b6c97..6f4e1151553d 100644 --- a/drivers/clk/at91/at91rm9200.c +++ b/drivers/clk/at91/at91rm9200.c @@ -187,7 +187,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91rm9200_pmc); + kfree(at91rm9200_pmc); } /* * While the TCB can be used as the clocksource, the system timer is most likely diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c index a9d4234758d7..946f03a09858 100644 --- a/drivers/clk/at91/at91sam9260.c +++ b/drivers/clk/at91/at91sam9260.c @@ -462,7 +462,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np, return; err_free: - pmc_data_free(at91sam9260_pmc); + kfree(at91sam9260_pmc); } static void __init at91sam9260_pmc_setup(struct device_node *np) diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c index 38a7d2d2df0c..53e8252b8a63 100644 --- a/drivers/clk/at91/at91sam9g45.c +++ b/drivers/clk/at91/at91sam9g45.c @@ -210,7 +210,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9g45_pmc); + kfree(at91sam9g45_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c index 8bb39d2ba84b..f3ae1cd3cb8d 100644 --- a/drivers/clk/at91/at91sam9n12.c +++ b/drivers/clk/at91/at91sam9n12.c @@ -228,7 +228,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9n12_pmc); + kfree(at91sam9n12_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/at91sam9rl.c b/drivers/clk/at91/at91sam9rl.c index 77fe83a73bf4..cc739d214ae3 100644 --- a/drivers/clk/at91/at91sam9rl.c +++ b/drivers/clk/at91/at91sam9rl.c @@ -166,6 +166,6 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(at91sam9rl_pmc); + kfree(at91sam9rl_pmc); } CLK_OF_DECLARE_DRIVER(at91sam9rl_pmc, "atmel,at91sam9rl-pmc", at91sam9rl_pmc_setup); diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c index 086cf0b4955c..aac99d699568 100644 --- a/drivers/clk/at91/at91sam9x5.c +++ b/drivers/clk/at91/at91sam9x5.c @@ -278,7 +278,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np, return; err_free: - pmc_data_free(at91sam9x5_pmc); + kfree(at91sam9x5_pmc); } static void __init at91sam9g15_pmc_setup(struct device_node *np) diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index b71515acdec1..ac46ea1b9fda 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -76,48 +76,30 @@ struct clk_hw *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data) return ERR_PTR(-EINVAL); } -void pmc_data_free(struct pmc_data *pmc_data) -{ - kfree(pmc_data->chws); - kfree(pmc_data->shws); - kfree(pmc_data->phws); - kfree(pmc_data->ghws); -} - struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, unsigned int nperiph, unsigned int ngck) { - struct pmc_data *pmc_data = kzalloc(sizeof(*pmc_data), GFP_KERNEL); + unsigned int num_clks = ncore + nsystem + nperiph + ngck; + struct pmc_data *pmc_data; + pmc_data = kzalloc(struct_size(pmc_data, hwtable, num_clks), + GFP_KERNEL); if (!pmc_data) return NULL; pmc_data->ncore = ncore; - pmc_data->chws = kcalloc(ncore, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->chws) - goto err; + pmc_data->chws = pmc_data->hwtable; pmc_data->nsystem = nsystem; - pmc_data->shws = kcalloc(nsystem, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->shws) - goto err; + pmc_data->shws = pmc_data->chws + ncore; pmc_data->nperiph = nperiph; - pmc_data->phws = kcalloc(nperiph, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->phws) - goto err; + pmc_data->phws = pmc_data->shws + nsystem; pmc_data->ngck = ngck; - pmc_data->ghws = kcalloc(ngck, sizeof(struct clk_hw *), GFP_KERNEL); - if (!pmc_data->ghws) - goto err; + pmc_data->ghws = pmc_data->phws + nperiph; return pmc_data; - -err: - pmc_data_free(pmc_data); - - return NULL; } #ifdef CONFIG_PM diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h index 9b8db9cdcda5..fc3ef772b9d9 100644 --- a/drivers/clk/at91/pmc.h +++ b/drivers/clk/at91/pmc.h @@ -24,6 +24,8 @@ struct pmc_data { struct clk_hw **phws; unsigned int ngck; struct clk_hw **ghws; + + struct clk_hw *hwtable[]; }; struct clk_range { @@ -95,7 +97,6 @@ struct clk_pcr_layout { #define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1) struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem, unsigned int nperiph, unsigned int ngck); -void pmc_data_free(struct pmc_data *pmc_data); int of_at91_get_clk_range(struct device_node *np, const char *propname, struct clk_range *range); diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index cc19e8fb83be..a7d4f648db26 100644 --- a/drivers/clk/at91/sam9x60.c +++ b/drivers/clk/at91/sam9x60.c @@ -299,7 +299,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sam9x60_pmc); + kfree(sam9x60_pmc); } /* Some clks are used for a clocksource */ CLK_OF_DECLARE(sam9x60_pmc, "microchip,sam9x60-pmc", sam9x60_pmc_setup); diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c index ff7e3f727082..b2560670e5af 100644 --- a/drivers/clk/at91/sama5d2.c +++ b/drivers/clk/at91/sama5d2.c @@ -350,6 +350,6 @@ static void __init sama5d2_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d2_pmc); + kfree(sama5d2_pmc); } CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup); diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c index 88506f909c08..914e6f225510 100644 --- a/drivers/clk/at91/sama5d3.c +++ b/drivers/clk/at91/sama5d3.c @@ -231,7 +231,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d3_pmc); + kfree(sama5d3_pmc); } /* * The TCB is used as the clocksource so its clock is needed early. This means diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c index a6dee4a3b6e4..4ca9a4619500 100644 --- a/drivers/clk/at91/sama5d4.c +++ b/drivers/clk/at91/sama5d4.c @@ -267,6 +267,6 @@ static void __init sama5d4_pmc_setup(struct device_node *np) return; err_free: - pmc_data_free(sama5d4_pmc); + kfree(sama5d4_pmc); } CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);