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205c9326fd
Add the ability to view response codes as well. I dropped the EVENT_CLASS since there is only one event per class. cros_ec_cmd has now been renamed to cros_ec_request_start. Example: $ echo 1 > /sys/kernel/debug/tracing/events/cros_ec/enable $ cat /sys/kernel/debug/tracing/trace 369.416372: cros_ec_request_start: version: 0, command: EC_CMD_USB_PD_POWER_INFO 369.420528: cros_ec_request_done: version: 0, command: EC_CMD_USB_PD_POWER_INFO, ec result: EC_RES_SUCCESS, retval: 16 369.420529: cros_ec_request_start: version: 0, command: EC_CMD_USB_PD_DISCOVERY 369.421383: cros_ec_request_done: version: 0, command: EC_CMD_USB_PD_DISCOVERY, ec result: EC_RES_SUCCESS, retval: 5 Signed-off-by: Raul E Rangel <rrangel@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Trace events for the ChromeOS Embedded Controller
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*
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* Copyright 2019 Google LLC.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM cros_ec
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#if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
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#define _CROS_EC_TRACE_H_
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#include <linux/bits.h>
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#include <linux/types.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#include <linux/platform_data/cros_ec_proto.h>
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#include <linux/tracepoint.h>
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TRACE_EVENT(cros_ec_request_start,
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TP_PROTO(struct cros_ec_command *cmd),
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TP_ARGS(cmd),
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TP_STRUCT__entry(
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__field(uint32_t, version)
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__field(uint32_t, command)
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),
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TP_fast_assign(
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__entry->version = cmd->version;
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__entry->command = cmd->command;
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),
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TP_printk("version: %u, command: %s", __entry->version,
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__print_symbolic(__entry->command, EC_CMDS))
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);
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TRACE_EVENT(cros_ec_request_done,
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TP_PROTO(struct cros_ec_command *cmd, int retval),
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TP_ARGS(cmd, retval),
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TP_STRUCT__entry(
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__field(uint32_t, version)
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__field(uint32_t, command)
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__field(uint32_t, result)
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__field(int, retval)
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),
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TP_fast_assign(
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__entry->version = cmd->version;
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__entry->command = cmd->command;
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__entry->result = cmd->result;
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__entry->retval = retval;
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),
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TP_printk("version: %u, command: %s, ec result: %s, retval: %d",
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__entry->version,
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__print_symbolic(__entry->command, EC_CMDS),
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__print_symbolic(__entry->result, EC_RESULT),
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__entry->retval)
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);
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#endif /* _CROS_EC_TRACE_H_ */
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/* this part must be outside header guard */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE cros_ec_trace
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#include <trace/define_trace.h>
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