hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Anna, Suman 2016-08-12 18:42:27 -05:00 committed by Bjorn Andersson
parent 0963679c0c
commit 211e3a93e5
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/rpmsg/virtio_rpmsg_bus.c
View File

@ -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);