diff options
| author | Michael Neuling <mikey@neuling.org> | 2013-02-13 16:21:32 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-02-15 16:58:50 +1100 |
| commit | 8b3c34cf0e0ab334a24aad7367cd06a5ba09a898 (patch) | |
| tree | a0dbebeaee859a25117559f7a4aff9c59224d847 /arch/powerpc/kernel | |
| parent | f4c3aff2230bfe696a0683073b77446248d7895c (diff) | |
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>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 23 | ||||
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 12 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 8 |
4 files changed, 50 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)); diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index e0ada05f2df3..adb155195394 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -35,6 +35,15 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX); \ 2: REST_32VSRS(n,c,base); \ 3: +#define __REST_32FPVSRS_TRANSACT(n,c,base) \ +BEGIN_FTR_SECTION \ + b 2f; \ +END_FTR_SECTION_IFSET(CPU_FTR_VSX); \ + REST_32FPRS_TRANSACT(n,base); \ + b 3f; \ +2: REST_32VSRS_TRANSACT(n,c,base); \ +3: + #define __SAVE_32FPVSRS(n,c,base) \ BEGIN_FTR_SECTION \ b 2f; \ @@ -45,9 +54,12 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX); \ 3: #else #define __REST_32FPVSRS(n,b,base) REST_32FPRS(n, base) +#define __REST_32FPVSRS_TRANSACT(n,b,base) REST_32FPRS(n, base) #define __SAVE_32FPVSRS(n,b,base) SAVE_32FPRS(n, base) #endif #define REST_32FPVSRS(n,c,base) __REST_32FPVSRS(n,__REG_##c,__REG_##base) +#define REST_32FPVSRS_TRANSACT(n,c,base) \ + __REST_32FPVSRS_TRANSACT(n,__REG_##c,__REG_##base) #define SAVE_32FPVSRS(n,c,base) __SAVE_32FPVSRS(n,__REG_##c,__REG_##base) /* diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 96e31de89b43..b0a0321e4bb6 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -57,6 +57,13 @@ #include <linux/kprobes.h> #include <linux/kdebug.h> +/* Transactional Memory debug */ +#ifdef TM_DEBUG_SW +#define TM_DEBUG(x...) printk(KERN_INFO x) +#else +#define TM_DEBUG(x...) do { } while(0) +#endif + extern unsigned long _get_SP(void); #ifndef CONFIG_SMP diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index a008cf5c0fce..bd5de5deaf51 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -78,6 +78,13 @@ EXPORT_SYMBOL(__debugger_break_match); EXPORT_SYMBOL(__debugger_fault_handler); #endif +/* Transactional Memory trap debug */ +#ifdef TM_DEBUG_SW +#define TM_DEBUG(x...) printk(KERN_INFO x) +#else +#define TM_DEBUG(x...) do { } while(0) +#endif + /* * Trap & Exception support */ @@ -350,6 +357,7 @@ static inline int check_io_access(struct pt_regs *regs) exception is in the MSR. */ #define get_reason(regs) ((regs)->msr) #define get_mc_reason(regs) ((regs)->msr) +#define REASON_TM 0x200000 #define REASON_FP 0x100000 #define REASON_ILLEGAL 0x80000 #define REASON_PRIVILEGED 0x40000 |