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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-03-05 15:03:25 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2010-03-11 13:38:01 +0100 |
| commit | 3f379b03fbfddd20536389a85c6456f8233d1f8d (patch) | |
| tree | 2847590a23aa0d72e799bd6d65a8a794abb565ac /kernel/rcutree.h | |
| parent | rcu: Suppress RCU lockdep warnings during early boot (diff) | |
| download | linux-dev-3f379b03fbfddd20536389a85c6456f8233d1f8d.tar.xz linux-dev-3f379b03fbfddd20536389a85c6456f8233d1f8d.zip | |
ftrace: Replace read_barrier_depends() with rcu_dereference_raw()
Replace the calls to read_barrier_depends() in
ftrace_list_func() with rcu_dereference_raw() to improve
readability. The reason that we use rcu_dereference_raw() here
is that removed entries are never freed, instead they are simply
leaked. This is one of a very few cases where use of
rcu_dereference_raw() is the long-term right answer. And I
don't yet know of any others. ;-)
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1267830207-9474-1-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutree.h')
0 files changed, 0 insertions, 0 deletions