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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-03 23:28:08 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-14 19:36:30 -0400
commita44e060fc523c379341e35a981c09c3953cf4ba4 (patch)
treef32db182b2f746acd95cd7dbb8794352a8f98eb4 /arch/parisc/kernel/entry.S
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
parisc: switch to generic kernel_thread()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/parisc/kernel/entry.S')
-rw-r--r--arch/parisc/kernel/entry.S53
1 files changed, 1 insertions, 52 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 18670a078849..18d05e7373b5 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -708,59 +708,9 @@ ENTRY(end_fault_vector)
.import do_cpu_irq_mask,code
/*
- * r26 = function to be called
- * r25 = argument to pass in
- * r24 = flags for do_fork()
- *
- * Kernel threads don't ever return, so they don't need
- * a true register context. We just save away the arguments
- * for copy_thread/ret_ to properly set up the child.
- */
-
-#define CLONE_VM 0x100 /* Must agree with <linux/sched.h> */
-#define CLONE_UNTRACED 0x00800000
-
- .import do_fork
-ENTRY(__kernel_thread)
- STREG %r2, -RP_OFFSET(%r30)
-
- copy %r30, %r1
- ldo PT_SZ_ALGN(%r30),%r30
-#ifdef CONFIG_64BIT
- /* Yo, function pointers in wide mode are little structs... -PB */
- ldd 24(%r26), %r2
- STREG %r2, PT_GR27(%r1) /* Store childs %dp */
- ldd 16(%r26), %r26
-
- STREG %r22, PT_GR22(%r1) /* save r22 (arg5) */
- copy %r0, %r22 /* user_tid */
-#endif
- STREG %r26, PT_GR26(%r1) /* Store function & argument for child */
- STREG %r25, PT_GR25(%r1)
- ldil L%CLONE_UNTRACED, %r26
- ldo CLONE_VM(%r26), %r26 /* Force CLONE_VM since only init_mm */
- or %r26, %r24, %r26 /* will have kernel mappings. */
- ldi 1, %r25 /* stack_start, signals kernel thread */
- stw %r0, -52(%r30) /* user_tid */
-#ifdef CONFIG_64BIT
- ldo -16(%r30),%r29 /* Reference param save area */
-#endif
- BL do_fork, %r2
- copy %r1, %r24 /* pt_regs */
-
- /* Parent Returns here */
-
- LDREG -PT_SZ_ALGN-RP_OFFSET(%r30), %r2
- ldo -PT_SZ_ALGN(%r30), %r30
- bv %r0(%r2)
- nop
-ENDPROC(__kernel_thread)
-
- /*
* Child Returns here
*
- * copy_thread moved args from temp save area set up above
- * into task save area.
+ * copy_thread moved args into task save area.
*/
ENTRY(ret_from_kernel_thread)
@@ -773,7 +723,6 @@ ENTRY(ret_from_kernel_thread)
LDREG TASK_PT_GR25(%r1), %r26
#ifdef CONFIG_64BIT
LDREG TASK_PT_GR27(%r1), %r27
- LDREG TASK_PT_GR22(%r1), %r22
#endif
LDREG TASK_PT_GR26(%r1), %r1
ble 0(%sr7, %r1)