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([178.160.196.94]) by smtp.gmail.com with ESMTPSA id q8-20020ac25288000000b004fb8c0f247fsm1011385lfm.129.2023.07.13.01.00.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jul 2023 01:00:04 -0700 (PDT) From: Ivan Orlov To: perex@perex.cz, tiwai@suse.com Cc: Ivan Orlov , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] ALSA: pcmtest: Add 'open' PCM callback error injection Date: Thu, 13 Jul 2023 11:59:52 +0400 Message-Id: <20230713075953.13692-1-ivan.orlov0322@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-MailFrom: ivan.orlov0322@gmail.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1 Message-ID-Hash: SUI3LVY447PK6K3QFBMHK5WRCGMDPHLN X-Message-ID-Hash: SUI3LVY447PK6K3QFBMHK5WRCGMDPHLN X-Mailman-Approved-At: Thu, 13 Jul 2023 08:06:23 +0000 X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Extend 'pcmtest' virtual driver with 'open' callback error injection functionality, as it already can inject errors into other PCM callbacks. Add module parameter which enables EBUSY error injection in the 'open' PCM callback. Signed-off-by: Ivan Orlov --- V1 -> V2: - Split changes in the patch into two different patches sound/drivers/pcmtest.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/drivers/pcmtest.c b/sound/drivers/pcmtest.c index 291e7fe47893..e74c523e49eb 100644 --- a/sound/drivers/pcmtest.c +++ b/sound/drivers/pcmtest.c @@ -65,6 +65,7 @@ static int inject_delay; static bool inject_hwpars_err; static bool inject_prepare_err; static bool inject_trigger_err; +static bool inject_open_err; static short fill_mode = FILL_MODE_PAT; @@ -88,6 +89,9 @@ module_param(inject_prepare_err, bool, 0600); MODULE_PARM_DESC(inject_prepare_err, "Inject EINVAL error in the 'prepare' callback"); module_param(inject_trigger_err, bool, 0600); MODULE_PARM_DESC(inject_trigger_err, "Inject EINVAL error in the 'trigger' callback"); +module_param(inject_open_err, bool, 0600); +MODULE_PARM_DESC(inject_open_err, "Inject EBUSY error in the 'open' callback"); + struct pcmtst { struct snd_pcm *pcm; @@ -364,6 +368,9 @@ static int snd_pcmtst_pcm_open(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime = substream->runtime; struct pcmtst_buf_iter *v_iter; + if (inject_open_err) + return -EBUSY; + v_iter = kzalloc(sizeof(*v_iter), GFP_KERNEL); if (!v_iter) return -ENOMEM; From patchwork Thu Jul 13 07:59:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Orlov X-Patchwork-Id: 702250 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DD065EB64DD for ; Thu, 13 Jul 2023 08:08:17 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id BD4544E; Thu, 13 Jul 2023 10:07:25 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz BD4544E DKIM-Signature: v=1; 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([178.160.196.94]) by smtp.gmail.com with ESMTPSA id q8-20020ac25288000000b004fb8c0f247fsm1011385lfm.129.2023.07.13.01.00.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jul 2023 01:00:07 -0700 (PDT) From: Ivan Orlov To: perex@perex.cz, tiwai@suse.com Cc: Ivan Orlov , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] ALSA: pcmtest: minor optimizations Date: Thu, 13 Jul 2023 11:59:53 +0400 Message-Id: <20230713075953.13692-2-ivan.orlov0322@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230713075953.13692-1-ivan.orlov0322@gmail.com> References: <20230713075953.13692-1-ivan.orlov0322@gmail.com> MIME-Version: 1.0 X-MailFrom: ivan.orlov0322@gmail.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1 Message-ID-Hash: VGLDUMMEHMNKMAQ7IH6WHNQAXK6RX7KS X-Message-ID-Hash: VGLDUMMEHMNKMAQ7IH6WHNQAXK6RX7KS X-Mailman-Approved-At: Thu, 13 Jul 2023 08:06:23 +0000 X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Decrease the buffer filling overhead with conditional remainder calculation in the 'inc_buf_pos' inline function. Fix the driver to use already defined variables where it is possible in 'check_buf_block_ni' and 'fill_block_pattern_n' functions. Signed-off-by: Ivan Orlov --- V1 -> V2: - Split changes in the patch into two different patches sound/drivers/pcmtest.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/sound/drivers/pcmtest.c b/sound/drivers/pcmtest.c index e74c523e49eb..08e14b5eb772 100644 --- a/sound/drivers/pcmtest.c +++ b/sound/drivers/pcmtest.c @@ -144,7 +144,8 @@ static inline void inc_buf_pos(struct pcmtst_buf_iter *v_iter, size_t by, size_t { v_iter->total_bytes += by; v_iter->buf_pos += by; - v_iter->buf_pos %= bytes; + if (v_iter->buf_pos >= bytes) + v_iter->buf_pos %= bytes; } /* @@ -200,10 +201,10 @@ static void check_buf_block_ni(struct pcmtst_buf_iter *v_iter, struct snd_pcm_ru u8 current_byte; for (i = 0; i < v_iter->b_rw; i++) { - current_byte = runtime->dma_area[buf_pos_n(v_iter, channels, i % channels)]; + ch_num = i % channels; + current_byte = runtime->dma_area[buf_pos_n(v_iter, channels, ch_num)]; if (!current_byte) break; - ch_num = i % channels; if (current_byte != patt_bufs[ch_num].buf[(v_iter->total_bytes / channels) % patt_bufs[ch_num].len]) { v_iter->is_buf_corrupted = true; @@ -243,7 +244,7 @@ static void fill_block_pattern_n(struct pcmtst_buf_iter *v_iter, struct snd_pcm_ for (i = 0; i < v_iter->b_rw; i++) { ch_num = i % channels; - runtime->dma_area[buf_pos_n(v_iter, channels, i % channels)] = + runtime->dma_area[buf_pos_n(v_iter, channels, ch_num)] = patt_bufs[ch_num].buf[(v_iter->total_bytes / channels) % patt_bufs[ch_num].len]; inc_buf_pos(v_iter, 1, runtime->dma_bytes);