diff options
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-11-05 21:32:45 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-11-06 08:42:12 -0500 |
| commit | a25d036d939a30623ff73ecad9c8b9116b02e823 (patch) | |
| tree | 075bcf99e35bd7448936c5370c3a31c9bd9eba9c /kernel/trace/fgraph.c | |
| parent | 5d029b035bf112466541b844ee1b86197936db65 (diff) | |
ftrace: Reverse what the RECURSION flag means in the ftrace_ops
Now that all callbacks are recursion safe, reverse the meaning of the
RECURSION flag and rename it from RECURSION_SAFE to simply RECURSION.
Now only callbacks that request to have recursion protecting it will
have the added trampoline to do so.
Also remove the outdated comment about "PER_CPU" when determining to
use the ftrace_ops_assist_func.
Link: https://lkml.kernel.org/r/20201028115613.742454631@goodmis.org
Link: https://lkml.kernel.org/r/20201106023547.904270143@goodmis.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/fgraph.c')
| -rw-r--r-- | kernel/trace/fgraph.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c index 5658f13037b3..73edb9e4f354 100644 --- a/kernel/trace/fgraph.c +++ b/kernel/trace/fgraph.c @@ -334,8 +334,7 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, static struct ftrace_ops graph_ops = { .func = ftrace_stub, - .flags = FTRACE_OPS_FL_RECURSION_SAFE | - FTRACE_OPS_FL_INITIALIZED | + .flags = FTRACE_OPS_FL_INITIALIZED | FTRACE_OPS_FL_PID | FTRACE_OPS_FL_STUB, #ifdef FTRACE_GRAPH_TRAMP_ADDR |