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Sun, 19 Jul 2020 06:27:34 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B37E5C43395; Sun, 19 Jul 2020 06:27:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from tingweiz-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tingwei) by smtp.codeaurora.org (Postfix) with ESMTPSA id 31E91C433C6; Sun, 19 Jul 2020 06:27:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 31E91C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=tingwei@codeaurora.org From: Tingwei Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin Subject: [PATCH] coresight: stm: support marked packet Date: Sun, 19 Jul 2020 14:27:12 +0800 Message-Id: <20200719062712.29133-1-tingwei@codeaurora.org> X-Mailer: git-send-email 2.20.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200719_022737_502998_128D5466 X-CRM114-Status: GOOD ( 12.61 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [69.72.43.7 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [69.72.43.7 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tsoni@codeaurora.org, Sai Prakash Ranjan , coresight@lists.linaro.org, Mao Jinlong , Tingwei Zhang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org STP_PACKET_MARKED is not supported by STM currently. Add STM_FLAG_MARKED to support marked packet in STM. Signed-off-by: Tingwei Zhang --- drivers/hwtracing/coresight/coresight-stm.c | 11 +++++++---- include/uapi/linux/coresight-stm.h | 1 + 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index b908ca104645..36fb1838b1d1 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -412,6 +412,7 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data, void __iomem *ch_addr; struct stm_drvdata *drvdata = container_of(stm_data, struct stm_drvdata, stm); + unsigned int stm_flags; if (!(drvdata && local_read(&drvdata->mode))) return -EACCES; @@ -421,8 +422,10 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data, ch_addr = stm_channel_addr(drvdata, channel); - flags = (flags == STP_PACKET_TIMESTAMPED) ? STM_FLAG_TIMESTAMPED : 0; - flags |= test_bit(channel, drvdata->chs.guaranteed) ? + stm_flags = (flags & STP_PACKET_TIMESTAMPED) ? + STM_FLAG_TIMESTAMPED : 0; + stm_flags |= (flags & STP_PACKET_MARKED) ? STM_FLAG_MARKED : 0; + stm_flags |= test_bit(channel, drvdata->chs.guaranteed) ? STM_FLAG_GUARANTEED : 0; if (size > drvdata->write_bytes) @@ -432,7 +435,7 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data, switch (packet) { case STP_PACKET_FLAG: - ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, flags); + ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, stm_flags); /* * The generic STM core sets a size of '0' on flag packets. @@ -444,7 +447,7 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data, break; case STP_PACKET_DATA: - ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, flags); + ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, stm_flags); stm_send(ch_addr, payload, size, drvdata->write_bytes); break; diff --git a/include/uapi/linux/coresight-stm.h b/include/uapi/linux/coresight-stm.h index 8847dbf24151..7ff3709c01b8 100644 --- a/include/uapi/linux/coresight-stm.h +++ b/include/uapi/linux/coresight-stm.h @@ -5,6 +5,7 @@ #include #define STM_FLAG_TIMESTAMPED _BITUL(3) +#define STM_FLAG_MARKED _BITUL(4) #define STM_FLAG_GUARANTEED _BITUL(7) /*