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authorRaul E Rangel <rrangel@chromium.org>2019-04-16 15:03:28 -0600
committerEnric Balletbo i Serra <enric.balletbo@collabora.com>2019-04-17 10:29:34 +0200
commit58a2109f6eb46b2952e2ce3fe776ce02c0c540dd (patch)
tree7d97942d8f269a70b31e2de50c3fbcfde824e721 /drivers/platform/chrome/Makefile
parentplatform/chrome: cros_ec_debugfs: Use cros_ec_cmd_xfer_status helper (diff)
downloadlinux-dev-58a2109f6eb46b2952e2ce3fe776ce02c0c540dd.tar.xz
linux-dev-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/Makefile5
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