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Commit 4483b159 authored by Ralf Baechle's avatar Ralf Baechle
Browse files

MIPS: Provide more elevant interface cu2_notifier for CP2 extensions. 



Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1504/
parent ea7a8463

arch/mips/cavium-octeon/cpu.c

+1 −5
Original line number Diff line number Diff line
@@ -41,12 +41,8 @@ static int cnmips_cu2_call(struct notifier_block *nfb, unsigned long action, 
	return NOTIFY_OK;		/* Let default notifier send signals */

}



static struct notifier_block cnmips_cu2_notifier = {

	.notifier_call = cnmips_cu2_call,

};



static int cnmips_cu2_setup(void)

{

	return register_cu2_notifier(&cnmips_cu2_notifier);

	return cu2_notifier(cnmips_cu2_call, 0);

}

early_initcall(cnmips_cu2_setup);

arch/mips/include/asm/cop2.h

+12 −0
Original line number Diff line number Diff line
@@ -9,6 +9,8 @@ 
#ifndef __ASM_COP2_H

#define __ASM_COP2_H



#include <linux/notifier.h>



enum cu2_ops {

	CU2_EXCEPTION,

	CU2_LWC2_OP,
@@ -20,4 +22,14 @@ enum cu2_ops { 
extern int register_cu2_notifier(struct notifier_block *nb);

extern int cu2_notifier_call_chain(unsigned long val, void *v);



#define cu2_notifier(fn, pri)						\

({									\

	static struct notifier_block fn##_nb __cpuinitdata = {		\

		.notifier_call = fn,					\

		.priority = pri						\

	};								\

									\

	register_cu2_notifier(&fn##_nb);				\

})



#endif /* __ASM_COP2_H */

arch/mips/kernel/traps.c

+1 −6
Original line number Diff line number Diff line
@@ -907,11 +907,6 @@ static int default_cu2_call(struct notifier_block *nfb, unsigned long action, 
	return NOTIFY_OK;

}



static struct notifier_block default_cu2_notifier = {

	.notifier_call	= default_cu2_call,

	.priority	= 0x80000000,		/* Run last  */

};



asmlinkage void do_cpu(struct pt_regs *regs)

{

	unsigned int __user *epc;
@@ -1734,5 +1729,5 @@ void __init trap_init(void) 


	sort_extable(__start___dbe_table, __stop___dbe_table);



	register_cu2_notifier(&default_cu2_notifier);

	cu2_notifier(default_cu2_call, 0x80000000);	/* Run last  */

}