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[PARISC] Disable LWS debugging

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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: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Aurelien Jarno
2007-05-22 17:38:26 +02:00
committed by Kyle McMartin
parent 2cbd42dbf8
commit b5e8b733a1
1 changed files with 4 additions and 4 deletions
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8
arch/parisc/kernel/syscall.S
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@@ -501,7 +501,7 @@ lws_compare_and_swap:
shlw %r20, 4, %r20 shlw %r20, 4, %r20
add %r20, %r28, %r20 add %r20, %r28, %r20
# ifdef ENABLE_LWS_DEBUG # if ENABLE_LWS_DEBUG
/* /*
DEBUG, check for deadlock! DEBUG, check for deadlock!
If the thread register values are the same If the thread register values are the same
@@ -550,7 +550,7 @@ cas_wouldblock:
perspective perspective
*/ */
cas_action: cas_action:
#if defined CONFIG_SMP && defined ENABLE_LWS_DEBUG #if defined CONFIG_SMP && ENABLE_LWS_DEBUG
/* DEBUG */ /* DEBUG */
mfctl %cr27, %r1 mfctl %cr27, %r1
stw %r1, 4(%sr2,%r20) stw %r1, 4(%sr2,%r20)
@@ -562,7 +562,7 @@ cas_action:
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
/* Free lock */ /* Free lock */
stw %r20, 0(%sr2,%r20) stw %r20, 0(%sr2,%r20)
# ifdef ENABLE_LWS_DEBUG # if ENABLE_LWS_DEBUG
/* Clear thread register indicator */ /* Clear thread register indicator */
stw %r0, 4(%sr2,%r20) stw %r0, 4(%sr2,%r20)
# endif # endif
@@ -576,7 +576,7 @@ cas_action:
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
/* Free lock */ /* Free lock */
stw %r20, 0(%sr2,%r20) stw %r20, 0(%sr2,%r20)
# ifdef ENABLE_LWS_DEBUG # if ENABLE_LWS_DEBUG
stw %r0, 4(%sr2,%r20) stw %r0, 4(%sr2,%r20)
# endif # endif
#endif #endif