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authorAnna, Suman <s-anna@ti.com>2016-08-13 02:42:27 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2016-08-13 07:26:21 +0300
commit211e3a93e5b5933e64ddfb299eee462ac7c7d500 (patch)
tree4cfcfde8ac4e2136bf7d27d9468e011e6e024e7f /drivers
parent0963679c0c30269c17d5891081cf0896f7d92c4b (diff)
downloadlinux-211e3a93e5b5933e64ddfb299eee462ac7c7d500.tar.xz
rpmsg: use dynamic_hex_dump for hex dump traces
There are couple of print_hex_dump traces used in rpmsg code which prints the actual byte messages being transferred between host and the remote processors. These traces are quiet verbose and affects performance, if the appropriate trace level is enabled. These hex dumps are needed rather rarely, but are quite useful when debugging complex IPC corner cases. So, this patch switches these hex dump traces to use the dynamic_hex_dump() API. The hex dump traces are also enabled only when CONFIG_DYNAMIC_DEBUG is enabled. This switch allows flexibility of controlling these traces through dynamic debug, instead of removing them completely. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/rpmsg/virtio_rpmsg_bus.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 7006dd3466c0..4a4374cc6a59 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -749,8 +749,10 @@ int rpmsg_send_offchannel_raw(struct rpmsg_channel *rpdev, u32 src, u32 dst,
dev_dbg(dev, "TX From 0x%x, To 0x%x, Len %d, Flags %d, Reserved %d\n",
msg->src, msg->dst, msg->len, msg->flags, msg->reserved);
- print_hex_dump(KERN_DEBUG, "rpmsg_virtio TX: ", DUMP_PREFIX_NONE, 16, 1,
- msg, sizeof(*msg) + msg->len, true);
+#if defined(CONFIG_DYNAMIC_DEBUG)
+ dynamic_hex_dump("rpmsg_virtio TX: ", DUMP_PREFIX_NONE, 16, 1,
+ msg, sizeof(*msg) + msg->len, true);
+#endif
sg_init_one(&sg, msg, sizeof(*msg) + len);
@@ -785,8 +787,10 @@ static int rpmsg_recv_single(struct virtproc_info *vrp, struct device *dev,
dev_dbg(dev, "From: 0x%x, To: 0x%x, Len: %d, Flags: %d, Reserved: %d\n",
msg->src, msg->dst, msg->len, msg->flags, msg->reserved);
- print_hex_dump(KERN_DEBUG, "rpmsg_virtio RX: ", DUMP_PREFIX_NONE, 16, 1,
- msg, sizeof(*msg) + msg->len, true);
+#if defined(CONFIG_DYNAMIC_DEBUG)
+ dynamic_hex_dump("rpmsg_virtio RX: ", DUMP_PREFIX_NONE, 16, 1,
+ msg, sizeof(*msg) + msg->len, true);
+#endif
/*
* We currently use fixed-sized buffers, so trivially sanitize
@@ -897,8 +901,10 @@ static void rpmsg_ns_cb(struct rpmsg_channel *rpdev, void *data, int len,
struct device *dev = &vrp->vdev->dev;
int ret;
- print_hex_dump(KERN_DEBUG, "NS announcement: ",
- DUMP_PREFIX_NONE, 16, 1, data, len, true);
+#if defined(CONFIG_DYNAMIC_DEBUG)
+ dynamic_hex_dump("NS announcement: ", DUMP_PREFIX_NONE, 16, 1,
+ data, len, true);
+#endif
if (len != sizeof(*msg)) {
dev_err(dev, "malformed ns msg (%d)\n", len);