diff options
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index ab39990cc43f..65a14e47a0db 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -85,6 +85,10 @@ typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip, * passing regs to the handler. * Note, if this flag is set, the SAVE_REGS flag will automatically * get set upon registering the ftrace_ops, if the arch supports it. + * RECURSION_SAFE - The ftrace_ops can set this to tell the ftrace infrastructure + * that the call back has its own recursion protection. If it does + * not set this, then the ftrace infrastructure will add recursion + * protection for the caller. */ enum { FTRACE_OPS_FL_ENABLED = 1 << 0, @@ -93,6 +97,7 @@ enum { FTRACE_OPS_FL_CONTROL = 1 << 3, FTRACE_OPS_FL_SAVE_REGS = 1 << 4, FTRACE_OPS_FL_SAVE_REGS_IF_SUPPORTED = 1 << 5, + FTRACE_OPS_FL_RECURSION_SAFE = 1 << 6, }; struct ftrace_ops { |