Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 49aea0fd authored by Russell King's avatar Russell King
Browse files

ARM: nwfpe: allow debugging output to be configured at runtime 



Enabling CONFIG_USER_DEBUG allows NWFPE to complain about every FP
exception, which with some programs can cause the kernel message log
to fill with NWFPE debug, swamping out other messages.

This change allows NWFPE debugging to be configured at run time.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 8e2a43f5

arch/arm/nwfpe/fpmodule.c

+11 −2
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include "fpa11.h"



#include <linux/module.h>

#include <linux/moduleparam.h>



/* XXX */

#include <linux/errno.h>
@@ -134,13 +135,17 @@ a SIGFPE exception if necessary. If not the relevant bits in the 
cumulative exceptions flag byte are set and we return.

*/



#ifdef CONFIG_DEBUG_USER

/* By default, ignore inexact errors as there are far too many of them to log */

static int debug = ~BIT_IXC;

#endif



void float_raise(signed char flags)

{

	register unsigned int fpsr, cumulativeTraps;



#ifdef CONFIG_DEBUG_USER

 	/* Ignore inexact errors as there are far too many of them to log */

 	if (flags & ~BIT_IXC)

	if (flags & debug)

 		printk(KERN_DEBUG

		       "NWFPE: %s[%d] takes exception %08x at %p from %08lx\n",

		       current->comm, current->pid, flags,
@@ -179,3 +184,7 @@ module_exit(fpe_exit); 
MODULE_AUTHOR("Scott Bambrough <scottb@rebel.com>");

MODULE_DESCRIPTION("NWFPE floating point emulator (" NWFPE_BITS " precision)");

MODULE_LICENSE("GPL");



#ifdef CONFIG_DEBUG_USER

module_param(debug, int, 0644);

#endif