powerpc: New macros for transactional memory support

This adds new macros for saving and restoring checkpointed architected state
from and to the thread_struct.

It also adds some debugging macros for when your brain explodes trying to debug
your transactional memory enabled kernel.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index e295a09b1f06..0fdc97496d7c 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -125,6 +125,29 @@ int main(void)
 #ifdef CONFIG_PPC_BOOK3S_64
         DEFINE(THREAD_TAR, offsetof(struct thread_struct, tar));
 #endif
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+        DEFINE(THREAD_TM_TFHAR, offsetof(struct thread_struct, tm_tfhar));
+        DEFINE(THREAD_TM_TEXASR, offsetof(struct thread_struct, tm_texasr));
+        DEFINE(THREAD_TM_TFIAR, offsetof(struct thread_struct, tm_tfiar));
+        DEFINE(PT_CKPT_REGS, offsetof(struct thread_struct, ckpt_regs));
+        DEFINE(THREAD_TRANSACT_VR0, offsetof(struct thread_struct,
+                                         transact_vr[0]));
+        DEFINE(THREAD_TRANSACT_VSCR, offsetof(struct thread_struct,
+                                          transact_vscr));
+        DEFINE(THREAD_TRANSACT_VRSAVE, offsetof(struct thread_struct,
+                                            transact_vrsave));
+        DEFINE(THREAD_TRANSACT_FPR0, offsetof(struct thread_struct,
+                                          transact_fpr[0]));
+        DEFINE(THREAD_TRANSACT_FPSCR, offsetof(struct thread_struct,
+                                           transact_fpscr));
+#ifdef CONFIG_VSX
+        DEFINE(THREAD_TRANSACT_VSR0, offsetof(struct thread_struct,
+                                          transact_fpr[0]));
+#endif
+        /* Local pt_regs on stack for Transactional Memory funcs. */
+        DEFINE(TM_FRAME_SIZE, STACK_FRAME_OVERHEAD +
+               sizeof(struct pt_regs) + 16);
+#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
 
         DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
         DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));