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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-19 17:00:06 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-19 17:00:06 +1000 |
| commit | 4c8440666b995f20604852b35dcfdbcc1d5931f1 (patch) | |
| tree | b3b6cd65ee275ba1adf9d2c050063f30ebbadb91 /kernel/ptrace.c | |
| parent | 751e1f5099f1568444fe2485f2485ca541d4952e (diff) | |
| parent | c560bbceaf6b06e52f1ef20131b76a3fdc0a2c19 (diff) | |
Merge branch 'merge' into next
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 0fc1eed28d27..dc7ab65f3b36 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -22,6 +22,7 @@ #include <linux/syscalls.h> #include <linux/uaccess.h> #include <linux/regset.h> +#include <linux/hw_breakpoint.h> /* @@ -879,3 +880,19 @@ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, return ret; } #endif /* CONFIG_COMPAT */ + +#ifdef CONFIG_HAVE_HW_BREAKPOINT +int ptrace_get_breakpoints(struct task_struct *tsk) +{ + if (atomic_inc_not_zero(&tsk->ptrace_bp_refcnt)) + return 0; + + return -1; +} + +void ptrace_put_breakpoints(struct task_struct *tsk) +{ + if (atomic_dec_and_test(&tsk->ptrace_bp_refcnt)) + flush_ptrace_hw_breakpoint(tsk); +} +#endif /* CONFIG_HAVE_HW_BREAKPOINT */ |