diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2019-04-16 23:03:28 +0200 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-04-17 10:29:34 +0200 |
| commit | 58a2109f6eb46b2952e2ce3fe776ce02c0c540dd (patch) | |
| tree | 7d97942d8f269a70b31e2de50c3fbcfde824e721 /drivers/platform/chrome/Makefile | |
| parent | platform/chrome: cros_ec_debugfs: Use cros_ec_cmd_xfer_status helper (diff) | |
| download | linux-58a2109f6eb46b2952e2ce3fe776ce02c0c540dd.tar.xz linux-58a2109f6eb46b2952e2ce3fe776ce02c0c540dd.zip | |
platform/chrome: cros_ec_proto: Add trace event to trace EC commands
This is useful to see which EC commands are being executed and when.
To enable:
echo 1 > /sys/kernel/debug/tracing/events/cros_ec/enable
Example:
cros_ec_cmd: version: 0, command: EC_CMD_GET_VERSION
cros_ec_cmd: version: 0, command: EC_CMD_GET_PROTOCOL_INFO
cros_ec_cmd: version: 1, command: EC_CMD_GET_CMD_VERSIONS
cros_ec_cmd: version: 1, command: EC_CMD_USB_PD_CONTROL
The list of current commands is generated using the following script:
sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1),\\/p' include/linux/mfd/cros_ec_commands.h
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'drivers/platform/chrome/Makefile')
| -rw-r--r-- | drivers/platform/chrome/Makefile | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile index 2cdee395c9f1..1b2f1dcfcd5c 100644 --- a/drivers/platform/chrome/Makefile +++ b/drivers/platform/chrome/Makefile @@ -1,5 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 +# tell define_trace.h where to find the cros ec trace header +CFLAGS_cros_ec_trace.o:= -I$(src) + obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o obj-$(CONFIG_CHROMEOS_TBMC) += chromeos_tbmc.o @@ -9,7 +12,7 @@ obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o cros_ec_lpcs-objs := cros_ec_lpc.o cros_ec_lpc_reg.o cros_ec_lpcs-$(CONFIG_CROS_EC_LPC_MEC) += cros_ec_lpc_mec.o obj-$(CONFIG_CROS_EC_LPC) += cros_ec_lpcs.o -obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o +obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o cros_ec_trace.o obj-$(CONFIG_CROS_KBD_LED_BACKLIGHT) += cros_kbd_led_backlight.o obj-$(CONFIG_CROS_EC_LIGHTBAR) += cros_ec_lightbar.o obj-$(CONFIG_CROS_EC_VBC) += cros_ec_vbc.o |