forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

ANDROID: arm scmi: add vendor hook to adjust the rx timeout.

Browse source 
Add a vendor hook in scmi transfer, to adjust the rx timeout
for performance tuning.

Bug: 189610155
Change-Id: Ic1687b3cf8568ca205f640fd97a7ce3bbfc61a36
Signed-off-by: Jiachiam Liu <jiachiam.liu@mediatek.com>
This commit is contained in:
Jiachiam Liu 2021-06-02 10:27:34 +08:00 • committed by Todd Kjos
commit 5cf77864a3
3 changed files with 24 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/android/vendor_hooks.c
View file

@ -59,6 +59,7 @@
#include <trace/hooks/mmc_core.h>
#include <trace/hooks/v4l2core.h>
#include <trace/hooks/v4l2mc.h>
#include <trace/hooks/scmi.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@ -308,3 +309,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_media_device_setup_link);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_reserved_fmt_fields);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_fill_ext_fmtdesc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_mask_adjust);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_scmi_timeout_sync);

3
drivers/firmware/arm_scmi/driver.c
View file

@ -34,6 +34,8 @@
#define CREATE_TRACE_POINTS
#include <trace/events/scmi.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/scmi.h>
enum scmi_error_codes {
SCMI_SUCCESS = 0, /* Success */
@ -461,6 +463,7 @@ static int do_xfer(const struct scmi_protocol_handle *ph,
} else {
/* And we wait for the response. */
timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms);
trace_android_vh_scmi_timeout_sync(&timeout);
if (!wait_for_completion_timeout(&xfer->done, timeout)) {
dev_err(dev, "timed out in resp(caller: %pS)\n",
(void *)_RET_IP_);

19
include/trace/hooks/scmi.h Normal file
View file

@ -0,0 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM scmi
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_SCMI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_SCMI_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
DECLARE_HOOK(android_vh_scmi_timeout_sync,
TP_PROTO(int *timeout),
TP_ARGS(timeout));
#endif /* _TRACE_HOOK_SCMI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>