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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2013-07-13 00:50:28 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-07-30 01:07:49 +0400 |
| commit | e66c33d579ea566d10e8c8695a7168aae3e02992 (patch) | |
| tree | b316d091004d823319afb6995539d4ad09386296 /kernel/rcupdate.c | |
| parent | 102c9323c35a83789ad5ebd3c45fa8fb389add88 (diff) | |
| download | linux-e66c33d579ea566d10e8c8695a7168aae3e02992.tar.xz | |
rcu: Add const annotation to char * for RCU tracepoints and functions
All the RCU tracepoints and functions that reference char pointers do
so with just 'char *' even though they do not modify the contents of
the string itself. This will cause warnings if a const char * is used
in one of these functions.
The RCU tracepoints store the pointer to the string to refer back to them
when the trace output is displayed. As this can be minutes, hours or
even days later, those strings had better be constant.
This change also opens the door to allow the RCU tracepoint strings and
their addresses to be exported so that userspace tracing tools can
translate the contents of the pointers of the RCU tracepoints.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/rcupdate.c')
| -rw-r--r-- | kernel/rcupdate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index cce6ba8bbace..14994d4e1a54 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -377,7 +377,7 @@ EXPORT_SYMBOL_GPL(rcuhead_debug_descr); #endif /* #ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD */ #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_RCU_TRACE) -void do_trace_rcu_torture_read(char *rcutorturename, struct rcu_head *rhp, +void do_trace_rcu_torture_read(const char *rcutorturename, struct rcu_head *rhp, unsigned long secs, unsigned long c_old, unsigned long c) { |