From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52D22C43466 for ; Sun, 20 Sep 2020 18:37:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 136AA214F1 for ; Sun, 20 Sep 2020 18:37:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="umtzhgm3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726467AbgITShw (ORCPT ); Sun, 20 Sep 2020 14:37:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726375AbgITShc (ORCPT ); Sun, 20 Sep 2020 14:37:32 -0400 Received: from mail-wm1-x343.google.com (mail-wm1-x343.google.com [IPv6:2a00:1450:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85099C0613DB for ; Sun, 20 Sep 2020 11:37:31 -0700 (PDT) Received: by mail-wm1-x343.google.com with SMTP id y15so10360916wmi.0 for ; Sun, 20 Sep 2020 11:37:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=PfuX2llufHc6JPJBoO7/4snMovEOdNyPWliA8GWvlXg=; b=umtzhgm3utglbBDavWHCM7PELk/9I0gdJuF0+B5bhWyBZv7XY5rOpHLLEKaDz8WDZo 0yPiHNwNUAi1tqdK258koOX+x17k1MyLRbuzSK0AiYDnNseA/oKwc00Cg2jkfUVIc+lR 6YzhL+viq7kQSPcSwZCnID4WPtUcPFmLJQ9Tyxi6dDrpRaOOY5K6AibsN7PXPQUMuDg0 FxlVY5TsHtofOK9/v5Xmp4SrbOaGAAnjeElypdzXkTEHtcrMBAWE+jEN0EdRm5LNy1AR MmD3ElDA+vWvFMDkkq6L6JhEKTbpEHibtV2ZfFkhLuk76ub7lOl1m3NKrNSL537vLdN6 rDbQ== 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; bh=PfuX2llufHc6JPJBoO7/4snMovEOdNyPWliA8GWvlXg=; b=bOkgEjGGW6mEyS8nELzD1dQqGyuAtocq+Y5Hp45mZXunrb6xsIK2DKQUTGIgTtigID KqDBXXkQk4lKObtrIr1Po+e3t21DIVVM2TDDbBvmGKvlJzrSZeIvq1AHJJpfLKCufEdT bi+JwImEXuJ5okdBrDnLfEw+8F0vUiFPCsvIY9SseU+bzI0p1DYJSfCfMLGOO/Md0+Jr dlRZsx89kJ1slXkzRG1alKP9uhStwCSIdIQXWjkNEeM4s3Oqh2Yl+nDWRkGiDzXABDcm 4sywmuurRFnEMNq54Gag9WrgeiiLY9Rnp1Ih1pLo9U/F2W7W+B9CT+1mL2zm5HUE4Rb5 Bpmg== X-Gm-Message-State: AOAM531P/E6krH2RPqemjeruMqFIBHFs6iUaMbk/fusz0W8ft6MiuUqD 7ZesvRlRBHVHVWm+2i1swhc6dQ== X-Google-Smtp-Source: ABdhPJw0kSnAEbNdwoks/vJl5Cx5jWBJh1SUn5HksGjIuzeiziMqi2nVYFafBnOSkv0lQl7CxLMHmg== X-Received: by 2002:a05:600c:414e:: with SMTP id h14mr25733695wmm.2.1600627050161; Sun, 20 Sep 2020 11:37:30 -0700 (PDT) Received: from localhost.localdomain ([51.15.160.169]) by smtp.googlemail.com with ESMTPSA id e18sm16419841wrx.50.2020.09.20.11.37.29 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 20 Sep 2020 11:37:29 -0700 (PDT) From: Corentin Labbe To: arnd@arndb.de, davem@davemloft.net, herbert@gondor.apana.org.au, mripard@kernel.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Corentin Labbe Subject: [PATCH v2 6/7] crypto: sun4i-ss: enabled stats via debugfs Date: Sun, 20 Sep 2020 18:37:17 +0000 Message-Id: <1600627038-40000-7-git-send-email-clabbe@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1600627038-40000-1-git-send-email-clabbe@baylibre.com> References: <1600627038-40000-1-git-send-email-clabbe@baylibre.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch enable to access usage stats for each algorithm. Signed-off-by: Corentin Labbe --- drivers/crypto/allwinner/Kconfig | 9 ++++ .../allwinner/sun4i-ss/sun4i-ss-cipher.c | 21 ++++++++ .../crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 54 +++++++++++++++++++ .../crypto/allwinner/sun4i-ss/sun4i-ss-hash.c | 8 +++ .../crypto/allwinner/sun4i-ss/sun4i-ss-prng.c | 5 ++ drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h | 11 ++++ 6 files changed, 108 insertions(+) diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig index 0e72543ad1f1..e9b7f7e3d307 100644 --- a/drivers/crypto/allwinner/Kconfig +++ b/drivers/crypto/allwinner/Kconfig @@ -51,6 +51,15 @@ config CRYPTO_DEV_SUN4I_SS_PRNG Select this option if you want to provide kernel-side support for the Pseudo-Random Number Generator found in the Security System. +config CRYPTO_DEV_SUN4I_SS_DEBUG + bool "Enable sun4i-ss stats" + depends on CRYPTO_DEV_SUN4I_SS + depends on DEBUG_FS + help + Say y to enable sun4i-ss debug stats. + This will create /sys/kernel/debug/sun4i-ss/stats for displaying + the number of requests per algorithm. + config CRYPTO_DEV_SUN8I_CE tristate "Support for Allwinner Crypto Engine cryptographic offloader" select CRYPTO_SKCIPHER diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c index f3bdf465b02e..2ec359eaa4cf 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c @@ -34,6 +34,10 @@ static int noinline_for_stack sun4i_ss_opti_poll(struct skcipher_request *areq) struct sg_mapping_iter mi, mo; unsigned int oi, oo; /* offset for in and out */ unsigned long flags; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun4i_ss_alg_template *algt; +#endif if (!areq->cryptlen) return 0; @@ -50,6 +54,12 @@ static int noinline_for_stack sun4i_ss_opti_poll(struct skcipher_request *areq) scatterwalk_map_and_copy(backup_iv, areq->src, areq->cryptlen - ivsize, ivsize, 0); } +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + algt = container_of(alg, struct sun4i_ss_alg_template, alg.crypto); + algt->stat_opti++; + algt->stat_bytes += areq->cryptlen; +#endif + spin_lock_irqsave(&ss->slock, flags); for (i = 0; i < op->keylen / 4; i++) @@ -134,7 +144,13 @@ static int noinline_for_stack sun4i_ss_cipher_poll_fallback(struct skcipher_requ struct sun4i_tfm_ctx *op = crypto_skcipher_ctx(tfm); struct sun4i_cipher_req_ctx *ctx = skcipher_request_ctx(areq); int err; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun4i_ss_alg_template *algt; + algt = container_of(alg, struct sun4i_ss_alg_template, alg.crypto); + algt->stat_fb++; +#endif skcipher_request_set_tfm(&ctx->fallback_req, op->fallback_tfm); skcipher_request_set_callback(&ctx->fallback_req, areq->base.flags, areq->base.complete, areq->base.data); @@ -223,6 +239,11 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) scatterwalk_map_and_copy(backup_iv, areq->src, areq->cryptlen - ivsize, ivsize, 0); } +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + algt->stat_req++; + algt->stat_bytes += areq->cryptlen; +#endif + spin_lock_irqsave(&ss->slock, flags); for (i = 0; i < op->keylen / 4; i++) diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c index a2b67f7f8a81..d044eb8f88b6 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c @@ -234,6 +234,53 @@ static struct sun4i_ss_alg_template ss_algs[] = { #endif }; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG +static int sun4i_ss_dbgfs_read(struct seq_file *seq, void *v) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(ss_algs); i++) { + if (!ss_algs[i].ss) + continue; + switch (ss_algs[i].type) { + case CRYPTO_ALG_TYPE_SKCIPHER: + seq_printf(seq, "%s %s reqs=%lu opti=%lu fallback=%lu tsize=%lu\n", + ss_algs[i].alg.crypto.base.cra_driver_name, + ss_algs[i].alg.crypto.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_opti, ss_algs[i].stat_fb, + ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_RNG: + seq_printf(seq, "%s %s reqs=%lu tsize=%lu\n", + ss_algs[i].alg.rng.base.cra_driver_name, + ss_algs[i].alg.rng.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_AHASH: + seq_printf(seq, "%s %s reqs=%lu\n", + ss_algs[i].alg.hash.halg.base.cra_driver_name, + ss_algs[i].alg.hash.halg.base.cra_name, + ss_algs[i].stat_req); + break; + } + } + return 0; +} + +static int sun4i_ss_dbgfs_open(struct inode *inode, struct file *file) +{ + return single_open(file, sun4i_ss_dbgfs_read, inode->i_private); +} + +static const struct file_operations sun4i_ss_debugfs_fops = { + .owner = THIS_MODULE, + .open = sun4i_ss_dbgfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; +#endif + /* * Power management strategy: The device is suspended unless a TFM exists for * one of the algorithms proposed by this driver. @@ -454,6 +501,13 @@ static int sun4i_ss_probe(struct platform_device *pdev) break; } } + +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + /* Ignore error of debugfs */ + ss->dbgfs_dir = debugfs_create_dir("sun4i-ss", NULL); + ss->dbgfs_stats = debugfs_create_file("stats", 0444, ss->dbgfs_dir, ss, + &sun4i_ss_debugfs_fops); +#endif return 0; error_alg: i--; diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c index dc35edd90034..3da60256f498 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c @@ -197,6 +197,10 @@ static int sun4i_hash(struct ahash_request *areq) int in_r, err = 0; size_t copied = 0; __le32 wb = 0; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg); + struct sun4i_ss_alg_template *algt; +#endif dev_dbg(ss->dev, "%s %s bc=%llu len=%u mode=%x wl=%u h0=%0x", __func__, crypto_tfm_alg_name(areq->base.tfm), @@ -397,6 +401,10 @@ static int sun4i_hash(struct ahash_request *areq) */ hash_final: +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + algt = container_of(alg, struct sun4i_ss_alg_template, alg.hash); + algt->stat_req++; +#endif /* write the remaining words of the wait buffer */ if (op->len) { diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c index 729aafdbea84..102f8a90ce0f 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c @@ -32,6 +32,11 @@ int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src, if (err < 0) return err; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + algt->stat_req++; + algt->stat_bytes += todo; +#endif + spin_lock_bh(&ss->slock); writel(mode, ss->base + SS_CTL); diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h index 163962f9e284..a98a2c05089b 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h @@ -13,6 +13,7 @@ #include #include +#include #include #include #include @@ -152,6 +153,10 @@ struct sun4i_ss_ctx { #ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG u32 seed[SS_SEED_LEN / BITS_PER_LONG]; #endif +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + struct dentry *dbgfs_dir; + struct dentry *dbgfs_stats; +#endif }; struct sun4i_ss_alg_template { @@ -163,6 +168,12 @@ struct sun4i_ss_alg_template { struct rng_alg rng; } alg; struct sun4i_ss_ctx *ss; +#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG + unsigned long stat_req; + unsigned long stat_fb; + unsigned long stat_bytes; + unsigned long stat_opti; +#endif }; struct sun4i_tfm_ctx { -- 2.26.2