diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-02 14:50:06 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2011-05-02 18:53:35 -0400 |
| commit | 313ce674d3cbc2d48ed34a9462427920ac54f4ad (patch) | |
| tree | 7478150a1268c79851f1a366158c59606330e700 /arch/tile/include | |
| parent | 93013a0f533fb3dd6875ca670d8e0bb4166a796e (diff) | |
arch/tile: support TIF_NOTIFY_RESUME
This support is required for CONFIG_KEYS, NFSv4 kernel DNS, etc.
The change is slightly more complex than the minimal thing, since
I took advantage of having to go into the assembly code to just
move a bunch of stuff into C code: specifically, the schedule(),
do_async_page_fault(), do_signal(), and single_step_once() support,
in addition to the TIF_NOTIFY_RESUME support.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/tile/include/asm/thread_info.h | 5 | ||||
| -rw-r--r-- | arch/tile/include/asm/traps.h | 4 |
3 files changed, 10 insertions, 1 deletions
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h index e6889474038..d6b43ddfcc0 100644 --- a/arch/tile/include/asm/processor.h +++ b/arch/tile/include/asm/processor.h @@ -215,6 +215,8 @@ static inline void release_thread(struct task_struct *dead_task) extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); +extern int do_work_pending(struct pt_regs *regs, u32 flags); + /* * Return saved (kernel) PC of a blocked thread. diff --git a/arch/tile/include/asm/thread_info.h b/arch/tile/include/asm/thread_info.h index 3405b52853b..bc4f562bd45 100644 --- a/arch/tile/include/asm/thread_info.h +++ b/arch/tile/include/asm/thread_info.h @@ -125,6 +125,7 @@ extern void cpu_idle_on_new_stack(struct thread_info *old_ti, #define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */ #define TIF_SECCOMP 6 /* secure computing */ #define TIF_MEMDIE 7 /* OOM killer at work */ +#define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) @@ -134,10 +135,12 @@ extern void cpu_idle_on_new_stack(struct thread_info *old_ti, #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) #define _TIF_SECCOMP (1<<TIF_SECCOMP) #define _TIF_MEMDIE (1<<TIF_MEMDIE) +#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) /* Work to do on any return to user space. */ #define _TIF_ALLWORK_MASK \ - (_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SINGLESTEP|_TIF_ASYNC_TLB) + (_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SINGLESTEP|\ + _TIF_ASYNC_TLB|_TIF_NOTIFY_RESUME) /* * Thread-synchronous status. diff --git a/arch/tile/include/asm/traps.h b/arch/tile/include/asm/traps.h index d06e35f5720..5f20f920f93 100644 --- a/arch/tile/include/asm/traps.h +++ b/arch/tile/include/asm/traps.h @@ -15,10 +15,14 @@ #ifndef _ASM_TILE_TRAPS_H #define _ASM_TILE_TRAPS_H +#include <arch/chip.h> + /* mm/fault.c */ void do_page_fault(struct pt_regs *, int fault_num, unsigned long address, unsigned long write); +#if CHIP_HAS_TILE_DMA() || CHIP_HAS_SN_PROC() void do_async_page_fault(struct pt_regs *); +#endif #ifndef __tilegx__ /* |