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ARM: vfp ptrace: no point flushing hw context for PTRACE_GETVFPREGS

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If we're only reading the VFP context via the ptrace call, there's
no need to invalidate the hardware context - we only need to do that
on PTRACE_SETVFPREGS.  This allows more efficient monitoring of a
traced task.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2010-02-06 11:36:23 +00:00
parent 54cb3dbb4a
commit ad187f9561
3 changed files with 29 additions and 5 deletions
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3
arch/arm/include/asm/thread_info.h
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@ -115,7 +115,8 @@ extern void iwmmxt_task_restore(struct thread_info *, void *);
extern void iwmmxt_task_release(struct thread_info *);
extern void iwmmxt_task_switch(struct thread_info *);
extern void vfp_sync_state(struct thread_info *thread);
extern void vfp_sync_hwstate(struct thread_info *);
extern void vfp_flush_hwstate(struct thread_info *);
#endif