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Commit 177fb744 authored by Sarang Joshi's avatar Sarang Joshi
Browse files

coresight: modify function names and messages 



Modify function names and messages to be consistent with other
modules. Modify function names starting with control_* to
event_*, abort_control_tracing to event_trace_user_fault and
abort_tracing_undef_instr to event_trace_undef_instr.

Change-Id: Ic6101dc8024b8d10713c162ea93e268ba59eaf8a
Signed-off-by: default avatarSarang Joshi <spjoshi@codeaurora.org>
parent a435d142

drivers/coresight/coresight-event.c

+24 −26
Original line number Diff line number Diff line 
/* Copyright (c) 2012, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -10,9 +10,6 @@ 
 * GNU General Public License for more details.

 */



/*

 * DLKM to register a callback with a ftrace event

 */

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/slab.h>
@@ -23,49 +20,50 @@ 


#include <trace/events/exception.h>



static void abort_coresight_tracing(void *ignore, struct task_struct *task,\

					unsigned long addr, unsigned int fsr)

static void event_trace_user_fault(void *ignore,

				   struct task_struct *task,

				   unsigned long addr,

				   unsigned int fsr)

{

	coresight_abort();

	pr_debug("control_trace: task_name: %s, addr: %lu, fsr:%u",\

	pr_debug("coresight_event: task_name: %s, addr: %lu, fsr:%u",

		(char *)task->comm, addr, fsr);

}



static void abort_tracing_undef_instr(void *ignore, struct pt_regs *regs,\

static void event_trace_undef_instr(void *ignore,

				    struct pt_regs *regs,

				    void *pc)

{

	if (user_mode(regs)) {

		coresight_abort();

		pr_debug("control_trace: pc: %p", pc);

		pr_debug("coresight_event: pc: %p", pc);

	}

}



static int __init control_trace_init(void)

static int __init event_init(void)

{

	int ret_user_fault, ret_undef_instr;

	ret_user_fault = register_trace_user_fault(abort_coresight_tracing,\

							NULL);

	ret_undef_instr = register_trace_undef_instr(abort_tracing_undef_instr,\

							NULL);

	ret_user_fault = register_trace_user_fault(

				event_trace_user_fault, NULL);

	ret_undef_instr = register_trace_undef_instr(

				event_trace_undef_instr, NULL);

	if (ret_user_fault != 0 || ret_undef_instr != 0) {

		pr_info("control_trace: Module Not Registered\n");

		pr_info("coresight_event: Module Not Registered\n");

		return (ret_user_fault < 0 ?\

			ret_user_fault : ret_undef_instr);

	}

	pr_info("control_trace: Module Registered\n");

	pr_info("coresight_event: Module Initialized\n");

	return 0;

}

module_init(event_init);



module_init(control_trace_init);



static void __exit control_trace_exit(void)

static void __exit event_exit(void)

{

	unregister_trace_user_fault(abort_coresight_tracing, NULL);

	unregister_trace_undef_instr(abort_tracing_undef_instr, NULL);

	pr_info("control_trace: Module Removed\n");

	unregister_trace_user_fault(event_trace_user_fault, NULL);

	unregister_trace_undef_instr(event_trace_undef_instr, NULL);

	pr_info("coresight_event: Module Removed\n");

}



module_exit(control_trace_exit);

module_exit(event_exit);



MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("Kernel Module to abort tracing");
 
MODULE_DESCRIPTION("Coresight Event driver to abort tracing");