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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-01 01:45:27 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-08 23:55:02 (GMT) |
| commit | fe1952fc0afb9a2e4c79f103c08aef5d13db1873 (patch) | |
| tree | ea1fc050910844e3c72d8fa576e7bf429c09d788 /arch/powerpc/include/asm/thread_info.h | |
| parent | 7450f6f03e9d6dc95d2014c4cceac8adf98560e8 (diff) | |
| download | linux-fsl-qoriq-fe1952fc0afb9a2e4c79f103c08aef5d13db1873.tar.xz | |
powerpc: Rework runlatch code
This moves the inlines into system.h and changes the runlatch
code to use the thread local flags (non-atomic) rather than
the TIF flags (atomic) to keep track of the latch state.
The code to turn it back on in an asynchronous interrupt is
now simplified and partially inlined.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/thread_info.h')
| -rw-r--r-- | arch/powerpc/include/asm/thread_info.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 96471494..4a741c7 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -110,7 +110,6 @@ static inline struct thread_info *current_thread_info(void) #define TIF_NOERROR 12 /* Force successful syscall return */ #define TIF_NOTIFY_RESUME 13 /* callback before returning to user */ #define TIF_SYSCALL_TRACEPOINT 15 /* syscall tracepoint instrumentation */ -#define TIF_RUNLATCH 16 /* Is the runlatch enabled? */ /* as above, but as bit values */ #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) @@ -141,11 +140,13 @@ static inline struct thread_info *current_thread_info(void) #define TLF_SLEEPING 1 /* suspend code enabled SLEEP mode */ #define TLF_RESTORE_SIGMASK 2 /* Restore signal mask in do_signal */ #define TLF_LAZY_MMU 3 /* tlb_batch is active */ +#define TLF_RUNLATCH 4 /* Is the runlatch enabled? */ #define _TLF_NAPPING (1 << TLF_NAPPING) #define _TLF_SLEEPING (1 << TLF_SLEEPING) #define _TLF_RESTORE_SIGMASK (1 << TLF_RESTORE_SIGMASK) #define _TLF_LAZY_MMU (1 << TLF_LAZY_MMU) +#define _TLF_RUNLATCH (1 << TLF_RUNLATCH) #ifndef __ASSEMBLY__ #define HAVE_SET_RESTORE_SIGMASK 1 @@ -156,6 +157,12 @@ static inline void set_restore_sigmask(void) set_bit(TIF_SIGPENDING, &ti->flags); } +static inline bool test_thread_local_flags(unsigned int flags) +{ + struct thread_info *ti = current_thread_info(); + return (ti->local_flags & flags) != 0; +} + #ifdef CONFIG_PPC64 #define is_32bit_task() (test_thread_flag(TIF_32BIT)) #else |