diff options
| author | Simon Guo <wei.guo.simon@gmail.com> | 2018-05-23 15:01:46 +0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-05-24 16:04:02 +1000 |
| commit | eacbb218fbbab5923775059f7232a9622dc47b2a (patch) | |
| tree | 76c0bffc2dfe73c02677fc0d3ded93fb20b20aef | |
| parent | ab3759b5734544dd1430527c3d89730990cfa4bb (diff) | |
powerpc: Export tm_enable()/tm_disable/tm_abort() APIs
This patch exports tm_enable()/tm_disable/tm_abort() APIs, which
will be used for PR KVM transactional memory logic.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/include/asm/asm-prototypes.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/tm.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/tm.S | 12 | ||||
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 1 |
4 files changed, 16 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h index d9713ad62e3c..dfdcb2374c28 100644 --- a/arch/powerpc/include/asm/asm-prototypes.h +++ b/arch/powerpc/include/asm/asm-prototypes.h @@ -141,4 +141,7 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip); void pnv_power9_force_smt4_catch(void); void pnv_power9_force_smt4_release(void); +void tm_enable(void); +void tm_disable(void); +void tm_abort(uint8_t cause); #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */ diff --git a/arch/powerpc/include/asm/tm.h b/arch/powerpc/include/asm/tm.h index b1658c97047c..e94f6db5e367 100644 --- a/arch/powerpc/include/asm/tm.h +++ b/arch/powerpc/include/asm/tm.h @@ -10,12 +10,10 @@ #ifndef __ASSEMBLY__ -extern void tm_enable(void); extern void tm_reclaim(struct thread_struct *thread, uint8_t cause); extern void tm_reclaim_current(uint8_t cause); extern void tm_recheckpoint(struct thread_struct *thread); -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); diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index b92ac8e711db..ff12f47a96b6 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -12,6 +12,7 @@ #include <asm/ptrace.h> #include <asm/reg.h> #include <asm/bug.h> +#include <asm/export.h> #ifdef CONFIG_VSX /* See fpu.S, this is borrowed from there */ @@ -55,6 +56,16 @@ _GLOBAL(tm_enable) or r4, r4, r3 mtmsrd r4 1: blr +EXPORT_SYMBOL_GPL(tm_enable); + +_GLOBAL(tm_disable) + mfmsr r4 + li r3, MSR_TM >> 32 + sldi r3, r3, 32 + andc r4, r4, r3 + mtmsrd r4 + blr +EXPORT_SYMBOL_GPL(tm_disable); _GLOBAL(tm_save_sprs) mfspr r0, SPRN_TFHAR @@ -78,6 +89,7 @@ _GLOBAL(tm_restore_sprs) _GLOBAL(tm_abort) TABORT(R3) blr +EXPORT_SYMBOL_GPL(tm_abort); /* void tm_reclaim(struct thread_struct *thread, * uint8_t cause) diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 0bd3790d35df..1bd8b4c1aab8 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -64,6 +64,7 @@ #include <asm/trace.h> #include <asm/ps3.h> #include <asm/pte-walk.h> +#include <asm/asm-prototypes.h> #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) |