o Rename cpu_thread_setup() to cpu_thread_alloc() to better

   communicate that it relates to (is called by) thread_alloc()
o  Add cpu_thread_free() which is called from thread_free()
   to counter-act cpu_thread_alloc().

i386:	Have cpu_thread_free() call cpu_thread_clean() to
	preserve behaviour.
ia64:	Have cpu_thread_free() call mtx_destroy() for the
	mutex initialized in cpu_thread_alloc().

PR: ia64/118024

11 files changed, 58 insertions, 13 deletions

diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c
index c3c5283..aba0fad 100644
--- a/sys/amd64/amd64/vm_machdep.c
+++ b/sys/amd64/amd64/vm_machdep.c
@@ -240,7 +240,7 @@ cpu_thread_swapout(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 
 	td->td_pcb = (struct pcb *)(td->td_kstack +
@@ -248,6 +248,11 @@ cpu_thread_setup(struct thread *td)
 	td->td_frame = (struct trapframe *)td->td_pcb - 1;
 }
 
+void
+cpu_thread_free(struct thread *td)
+{
+}
+
 /*
  * Initialize machine state (pcb and trap frame) for a new thread about to
  * upcall. Put enough state in the new thread's PCB to get it to go back 
diff --git a/sys/arm/arm/vm_machdep.c b/sys/arm/arm/vm_machdep.c
index 2e87030..675927c 100644
--- a/sys/arm/arm/vm_machdep.c
+++ b/sys/arm/arm/vm_machdep.c
@@ -333,7 +333,7 @@ cpu_thread_exit(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	td->td_pcb = (struct pcb *)(td->td_kstack + td->td_kstack_pages * 
 	    PAGE_SIZE) - 1;
@@ -344,8 +344,13 @@ cpu_thread_setup(struct thread *td)
 	pmap_use_minicache(td->td_kstack, td->td_kstack_pages * PAGE_SIZE);
 #endif
 #endif  
-		
 }
+
+void
+cpu_thread_free(struct thread *td)
+{
+}
+
 void
 cpu_thread_clean(struct thread *td)
 {
diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c
index bbcdddf..346d423 100644
--- a/sys/i386/i386/vm_machdep.c
+++ b/sys/i386/i386/vm_machdep.c
@@ -361,7 +361,7 @@ cpu_thread_swapout(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 
 	td->td_pcb = (struct pcb *)(td->td_kstack +
@@ -370,6 +370,13 @@ cpu_thread_setup(struct thread *td)
 	td->td_pcb->pcb_ext = NULL; 
 }
 
+void
+cpu_thread_free(struct thread *td)
+{
+
+	cpu_thread_clean(td);
+}
+
 /*
  * Initialize machine state (pcb and trap frame) for a new thread about to
  * upcall. Put enough state in the new thread's PCB to get it to go back 
diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c
index b0854fc..3c44b2e 100644
--- a/sys/ia64/ia64/machdep.c
+++ b/sys/ia64/ia64/machdep.c
@@ -806,7 +806,7 @@ ia64_init(void)
 	 * and make proc0's trapframe pointer point to it for sanity.
 	 * Initialise proc0's backing store to start after u area.
 	 */
-	cpu_thread_setup(&thread0);
+	cpu_thread_alloc(&thread0);
 	thread0.td_frame->tf_flags = FRAME_SYSCALL;
 	thread0.td_pcb->pcb_special.sp =
 	    (u_int64_t)thread0.td_frame - 16;
diff --git a/sys/ia64/ia64/vm_machdep.c b/sys/ia64/ia64/vm_machdep.c
index 40708c4..42a1796 100644
--- a/sys/ia64/ia64/vm_machdep.c
+++ b/sys/ia64/ia64/vm_machdep.c
@@ -107,7 +107,7 @@ cpu_thread_clean(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	intptr_t sp;
 
@@ -121,6 +121,13 @@ cpu_thread_setup(struct thread *td)
 }
 
 void
+cpu_thread_free(struct thread *td)
+{
+
+	mtx_destroy(&td->td_md.md_highfp_mtx);
+}
+
+void
 cpu_thread_swapin(struct thread *td)
 {
 }
diff --git a/sys/kern/kern_thread.c b/sys/kern/kern_thread.c
index e1a27a5..7fdfa20 100644
--- a/sys/kern/kern_thread.c
+++ b/sys/kern/kern_thread.c
@@ -325,7 +325,7 @@ thread_alloc(void)
 		uma_zfree(thread_zone, td);
 		return (NULL);
 	}
-	cpu_thread_setup(td);
+	cpu_thread_alloc(td);
 	return (td);
 }
 
@@ -337,7 +337,7 @@ void
 thread_free(struct thread *td)
 {
 
-	cpu_thread_clean(td);
+	cpu_thread_free(td);
 	if (td->td_altkstack != 0)
 		vm_thread_dispose_altkstack(td);
 	if (td->td_kstack != 0)
diff --git a/sys/powerpc/aim/vm_machdep.c b/sys/powerpc/aim/vm_machdep.c
index 1492a07..ce8416a 100644
--- a/sys/powerpc/aim/vm_machdep.c
+++ b/sys/powerpc/aim/vm_machdep.c
@@ -277,7 +277,7 @@ cpu_thread_clean(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	struct pcb *pcb;
 
@@ -288,6 +288,11 @@ cpu_thread_setup(struct thread *td)
 }
 
 void
+cpu_thread_free(struct thread *td)
+{
+}
+
+void
 cpu_thread_swapin(struct thread *td)
 {
 }
diff --git a/sys/powerpc/powerpc/vm_machdep.c b/sys/powerpc/powerpc/vm_machdep.c
index 1492a07..ce8416a 100644
--- a/sys/powerpc/powerpc/vm_machdep.c
+++ b/sys/powerpc/powerpc/vm_machdep.c
@@ -277,7 +277,7 @@ cpu_thread_clean(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	struct pcb *pcb;
 
@@ -288,6 +288,11 @@ cpu_thread_setup(struct thread *td)
 }
 
 void
+cpu_thread_free(struct thread *td)
+{
+}
+
+void
 cpu_thread_swapin(struct thread *td)
 {
 }
diff --git a/sys/sparc64/sparc64/vm_machdep.c b/sys/sparc64/sparc64/vm_machdep.c
index fce7786..2f4c0ea 100644
--- a/sys/sparc64/sparc64/vm_machdep.c
+++ b/sys/sparc64/sparc64/vm_machdep.c
@@ -132,7 +132,7 @@ cpu_thread_clean(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	struct pcb *pcb;
 
@@ -144,6 +144,11 @@ cpu_thread_setup(struct thread *td)
 }
 
 void
+cpu_thread_free(struct thread *td)
+{
+}
+ 
+void
 cpu_thread_swapin(struct thread *td)
 {
 }
diff --git a/sys/sun4v/sun4v/vm_machdep.c b/sys/sun4v/sun4v/vm_machdep.c
index fbfa4a0..63a002f 100644
--- a/sys/sun4v/sun4v/vm_machdep.c
+++ b/sys/sun4v/sun4v/vm_machdep.c
@@ -111,7 +111,7 @@ cpu_thread_clean(struct thread *td)
 }
 
 void
-cpu_thread_setup(struct thread *td)
+cpu_thread_alloc(struct thread *td)
 {
 	struct pcb *pcb;
 
@@ -127,6 +127,11 @@ cpu_thread_setup(struct thread *td)
 }
 
 void
+cpu_thread_free(struct thread *td)
+{
+}
+
+void
 cpu_thread_swapin(struct thread *td)
 {
 }
diff --git a/sys/sys/proc.h b/sys/sys/proc.h
index 8e0b90e..eaf6f03 100644
--- a/sys/sys/proc.h
+++ b/sys/sys/proc.h
@@ -877,9 +877,10 @@ void	upcall_remove(struct thread *td);
 void	cpu_set_upcall(struct thread *td, struct thread *td0);
 void	cpu_set_upcall_kse(struct thread *, void (*)(void *), void *, stack_t *);
 int	cpu_set_user_tls(struct thread *, void *tls_base);
+void	cpu_thread_alloc(struct thread *);
 void	cpu_thread_clean(struct thread *);
 void	cpu_thread_exit(struct thread *);
-void	cpu_thread_setup(struct thread *td);
+void	cpu_thread_free(struct thread *);
 void	cpu_thread_swapin(struct thread *);
 void	cpu_thread_swapout(struct thread *);
 struct	thread *thread_alloc(void);