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| author | Michael Neuling <mikey@neuling.org> | 2013-02-13 17:21:35 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-02-15 06:58:52 +0100 |
| commit | 98ae22e15b430bfed5def01ac1a88ec9396284c8 (patch) | |
| tree | dc4119b4c88a094039206851c7f12f42b4ce75df /arch/powerpc/include/asm/tm.h | |
| parent | powerpc: Add transactional memory paca scratch register to show_regs (diff) | |
| download | linux-98ae22e15b430bfed5def01ac1a88ec9396284c8.tar.xz linux-98ae22e15b430bfed5def01ac1a88ec9396284c8.zip | |
powerpc: Add helper functions for transactional memory context switching
Here we add the helper functions to be used when context switching. These
allow us to fully reclaim and recheckpoint a transaction.
We introduce a new paca field called tm_scratch to help us store away register
values when doing the low level tm reclaim register save.
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/include/asm/tm.h')
| -rw-r--r-- | arch/powerpc/include/asm/tm.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/tm.h b/arch/powerpc/include/asm/tm.h new file mode 100644 index 000000000000..4b4449abf3f8 --- /dev/null +++ b/arch/powerpc/include/asm/tm.h @@ -0,0 +1,20 @@ +/* + * Transactional memory support routines to reclaim and recheckpoint + * transactional process state. + * + * Copyright 2012 Matt Evans & Michael Neuling, IBM Corporation. + */ + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +extern void do_load_up_transact_fpu(struct thread_struct *thread); +extern void do_load_up_transact_altivec(struct thread_struct *thread); +#endif + +extern void tm_enable(void); +extern void tm_reclaim(struct thread_struct *thread, + unsigned long orig_msr, uint8_t cause); +extern void tm_recheckpoint(struct thread_struct *thread, + unsigned long orig_msr); +extern void tm_abort(uint8_t cause); +extern void tm_save_sprs(struct thread_struct *thread); +extern void tm_restore_sprs(struct thread_struct *thread); |