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Commit b5e8b733 authored by Aurelien Jarno's avatar Aurelien Jarno Committed by Kyle McMartin
Browse files

[PARISC] Disable LWS debugging 



The LWS debugging code on parisc is wrongly enabled due to a bug in the
use of the preprocessor directives. This debugging code is not thread
safe and causes problems with a recent glibc on SMP kernels.

Signed-off-by: default avatarAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 2cbd42db

arch/parisc/kernel/syscall.S

+4 −4
Original line number Diff line number Diff line
@@ -501,7 +501,7 @@ lws_compare_and_swap: 
	shlw	%r20, 4, %r20

	add	%r20, %r28, %r20



# ifdef ENABLE_LWS_DEBUG

# if ENABLE_LWS_DEBUG

	/*	

		DEBUG, check for deadlock! 

		If the thread register values are the same
@@ -550,7 +550,7 @@ cas_wouldblock: 
		perspective

	*/

cas_action:

#if defined CONFIG_SMP && defined ENABLE_LWS_DEBUG

#if defined CONFIG_SMP && ENABLE_LWS_DEBUG

	/* DEBUG */

	mfctl	%cr27, %r1

	stw	%r1, 4(%sr2,%r20)
@@ -562,7 +562,7 @@ cas_action: 
#ifdef CONFIG_SMP

	/* Free lock */

	stw	%r20, 0(%sr2,%r20)

# ifdef ENABLE_LWS_DEBUG

# if ENABLE_LWS_DEBUG

	/* Clear thread register indicator */

	stw	%r0, 4(%sr2,%r20)

# endif
@@ -576,7 +576,7 @@ cas_action: 
#ifdef CONFIG_SMP

	/* Free lock */

	stw	%r20, 0(%sr2,%r20)

# ifdef ENABLE_LWS_DEBUG

# if ENABLE_LWS_DEBUG

	stw	%r0, 4(%sr2,%r20)

# endif

#endif