Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Mathieu Poirier <mathieu.poirier@linaro.org>
To:     bjorn.andersson@linaro.org, ohad@wizery.com
Cc:     loic.pallardy@st.com, arnaud.pouliquen@st.com, s-anna@ti.com,
        linux-remoteproc@vger.kernel.org, corbet@lwn.net,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 14/14] remoteproc: Expose synchronisation flags via debugfs
Date:   Fri, 24 Apr 2020 14:01:35 -0600
Message-Id: <20200424200135.28825-15-mathieu.poirier@linaro.org>
In-Reply-To: <20200424200135.28825-1-mathieu.poirier@linaro.org>
References: <20200424200135.28825-1-mathieu.poirier@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Add a debugfs entry that reflects the value of the current
synchronisation flags used by the remoteproc core.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/remoteproc/remoteproc_debugfs.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c
index 732770e92b99..3dde24e62cd8 100644
--- a/drivers/remoteproc/remoteproc_debugfs.c
+++ b/drivers/remoteproc/remoteproc_debugfs.c
@@ -291,6 +291,25 @@ static int rproc_carveouts_show(struct seq_file *seq, void *p)
 
 DEFINE_SHOW_ATTRIBUTE(rproc_carveouts);
 
+ /* Expose synchronisation states via debugfs */
+static int rproc_sync_flags_show(struct seq_file *seq, void *p)
+{
+	struct rproc *rproc = seq->private;
+
+	seq_printf(seq, "Sync with rproc: %s\n",
+		   rproc->sync_with_rproc ? "true" : "false");
+	seq_printf(seq, "On init: %s\n",
+		   rproc->sync_flags.on_init ? "true" : "false");
+	seq_printf(seq, "After stop: %s\n",
+		   rproc->sync_flags.after_stop ? "true" : "false");
+	seq_printf(seq, "After crash: %s\n",
+		   rproc->sync_flags.after_crash ? "true" : "false");
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(rproc_sync_flags);
+
 void rproc_remove_trace_file(struct dentry *tfile)
 {
 	debugfs_remove(tfile);
@@ -337,6 +356,8 @@ void rproc_create_debug_dir(struct rproc *rproc)
 			    rproc, &rproc_rsc_table_fops);
 	debugfs_create_file("carveout_memories", 0400, rproc->dbg_dir,
 			    rproc, &rproc_carveouts_fops);
+	debugfs_create_file("sync_flags", 0400, rproc->dbg_dir,
+			    rproc, &rproc_sync_flags_fops);
 }
 
 void __init rproc_init_debugfs(void)
-- 
2.20.1