From 58a2109f6eb46b2952e2ce3fe776ce02c0c540dd Mon Sep 17 00:00:00 2001 From: Raul E Rangel Date: Tue, 16 Apr 2019 15:03:28 -0600 Subject: 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 Reviewed-by: Ross Zwisler Reviewed-by: Steven Rostedt (VMware) Signed-off-by: Enric Balletbo i Serra --- drivers/platform/chrome/Makefile | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/platform/chrome/Makefile') 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 -- cgit v1.2.3-59-g8ed1b