Module: xenomai-head
Branch: master
Commit: b3c6f100200d192f6ca5eee5bc8854b222af0c1f
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=b3c6f100200d192f6ca5eee5bc8854b222af0c1f
Author: Philippe Gerum r...@xenomai.org
Date: Wed Jun 17 10:55:09 2009 +0200
powerpc: make thread_info reference depend on
CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
---
include/asm-powerpc/bits/pod.h|6 +-
include/asm-powerpc/bits/sched.h |2 ++
include/asm-powerpc/bits/shadow.h |2 ++
include/asm-powerpc/bits/thread.h |2 ++
include/asm-powerpc/system.h |4 +++-
5 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/include/asm-powerpc/bits/pod.h b/include/asm-powerpc/bits/pod.h
index 6baf881..145fd4f 100644
--- a/include/asm-powerpc/bits/pod.h
+++ b/include/asm-powerpc/bits/pod.h
@@ -47,7 +47,9 @@ static inline void xnarch_leave_root(xnarchtcb_t * rootcb)
rootcb-user_task = rootcb-active_task = current;
rootcb-tsp = current-thread;
rootcb-mm = rootcb-active_mm = rthal_get_active_mm();
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
rootcb-tip = task_thread_info(current);
+#endif
#ifdef CONFIG_XENO_HW_FPU
rootcb-user_fpu_owner = rthal_get_fpu_owner(rootcb-user_task);
/* So that xnarch_save_fpu() will operate on the right FPU area. */
@@ -104,7 +106,7 @@ static inline void xnarch_switch_to(xnarchtcb_t *out_tcb,
}
rthal_thread_switch(out_tcb-tsp, in_tcb-tsp, next == NULL);
#else /* PPC32 */
- if (likely(next_mm)) {
+ if (likely(next_mm != NULL)) {
next-thread.pgdir = next_mm-pgd;
#if LINUX_VERSION_CODE KERNEL_VERSION(2,6,29)
get_mmu_context(next_mm);
@@ -134,7 +136,9 @@ static inline void xnarch_init_root_tcb(xnarchtcb_t *tcb,
tcb-tsp = tcb-ts;
tcb-mm = current-mm;
tcb-active_mm = NULL;
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
tcb-tip = tcb-ti;
+#endif
#ifdef CONFIG_XENO_HW_FPU
tcb-user_fpu_owner = NULL;
tcb-fpup = NULL;
diff --git a/include/asm-powerpc/bits/sched.h b/include/asm-powerpc/bits/sched.h
index 262f03b..3f9f09c 100644
--- a/include/asm-powerpc/bits/sched.h
+++ b/include/asm-powerpc/bits/sched.h
@@ -29,7 +29,9 @@ static inline void xnarch_init_root_tcb(xnarchtcb_t *tcb,
tcb-tsp = tcb-ts;
tcb-mm = current-mm;
tcb-active_mm = NULL;
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
tcb-tip = tcb-ti;
+#endif
#ifdef CONFIG_XENO_HW_FPU
tcb-user_fpu_owner = NULL;
tcb-fpup = NULL;
diff --git a/include/asm-powerpc/bits/shadow.h
b/include/asm-powerpc/bits/shadow.h
index 1117e2d..baf702b 100644
--- a/include/asm-powerpc/bits/shadow.h
+++ b/include/asm-powerpc/bits/shadow.h
@@ -38,7 +38,9 @@ static inline void xnarch_init_shadow_tcb(xnarchtcb_t * tcb,
tcb-tsp = task-thread;
tcb-mm = task-mm;
tcb-active_mm = NULL;
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
tcb-tip = task_thread_info(task);
+#endif
#ifdef CONFIG_XENO_HW_FPU
tcb-user_fpu_owner = task;
tcb-fpup = (rthal_fpenv_t *) task-thread.fpr[0];
diff --git a/include/asm-powerpc/bits/thread.h
b/include/asm-powerpc/bits/thread.h
index a33fa53..65ff73b 100644
--- a/include/asm-powerpc/bits/thread.h
+++ b/include/asm-powerpc/bits/thread.h
@@ -34,7 +34,9 @@ static inline void xnarch_init_tcb(xnarchtcb_t * tcb)
tcb-tsp = tcb-ts;
tcb-mm = NULL;
tcb-active_mm = NULL;
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
tcb-tip = tcb-ti;
+#endif
/* Note: .pgdir(ppc32) == NULL for a Xenomai kthread. */
memset(tcb-ts, 0, sizeof(tcb-ts));
#ifdef CONFIG_XENO_HW_FPU
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index bb01d38..04e0943 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -51,11 +51,13 @@ typedef struct xnarchtcb { /* Per-thread arch-dependent
block */
struct thread_struct *tsp; /* Pointer to the active thread struct
(ts or user-thread). */
struct mm_struct *mm;
struct mm_struct *active_mm;
- struct thread_info *tip; /* Pointer to the active thread info (ti or
user-thread_info). */
/* Kernel mode side */
struct thread_struct ts;/* Holds kernel-based thread context. */
+#ifdef CONFIG_IPIPE_UNMASKED_CONTEXT_SWITCH
+ struct thread_info *tip; /* Pointer to the active thread info (ti or
user-thread_info). */
struct thread_info ti; /* Holds kernel-based thread info */
+#endif
#ifdef CONFIG_XENO_HW_FPU
/* We only care for basic FPU handling in kernel-space; Altivec
and SPE are not available to kernel-based nucleus threads. */
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