From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Jiri Olsa <jolsa@redhat.com>
Subject: [for-next][PATCH 06/18] ftrace: Set ftrace internal function tracing RCU safe
Date: Wed, 04 Sep 2013 10:35:58 -0400 [thread overview]
Message-ID: <20130904143701.283063670@goodmis.org> (raw)
In-Reply-To: 20130904143552.456506259@goodmis.org
[-- Attachment #1: 0005-ftrace-Set-ftrace-internal-function-tracing-RCU-safe.patch --]
[-- Type: text/plain, Size: 964 bytes --]
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
Since none of the internal ftrace function tracing uses RCU in
their callbacks, it is OK to set the global_ops (the one that
they all use) to RCU safe.
Cc: Jiri Olsa <jolsa@redhat.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/ftrace.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 3327aff..caeeda24 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1146,7 +1146,9 @@ static struct ftrace_ops global_ops = {
.func = ftrace_stub,
.notrace_hash = EMPTY_HASH,
.filter_hash = EMPTY_HASH,
- .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_INITIALIZED,
+ .flags = FTRACE_OPS_FL_RECURSION_SAFE |
+ FTRACE_OPS_FL_INITIALIZED |
+ FTRACE_OPS_FL_RCU_SAFE,
INIT_REGEX_LOCK(global_ops)
};
--
1.7.10.4
next prev parent reply other threads:[~2013-09-04 14:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-04 14:35 [for-next][PATCH 00/18] ftrace/rcu: Handle unsafe RCU functions and ftrace callbacks Steven Rostedt
2013-09-04 14:35 ` [for-next][PATCH 01/18] tracing: Make tracing_cpumask available for all instances Steven Rostedt
2013-09-04 14:35 ` [for-next][PATCH 02/18] ftrace: Fix a slight race in modifying what function callback gets traced Steven Rostedt
2013-09-04 14:35 ` [for-next][PATCH 03/18] ftrace/rcu: Do not trace debug_lockdep_rcu_enabled() Steven Rostedt
2013-09-04 14:35 ` [for-next][PATCH 04/18] ftrace: Add hash list to save RCU unsafe functions Steven Rostedt
2013-09-04 14:35 ` [for-next][PATCH 05/18] ftrace: Do not set ftrace records for unsafe RCU when not allowed Steven Rostedt
2013-09-04 14:35 ` Steven Rostedt [this message]
2013-09-04 14:35 ` [for-next][PATCH 07/18] ftrace: Add test for ops against unsafe RCU functions in callback Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 08/18] ftrace: Do not display non safe RCU functions in available_filter_functions Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 09/18] ftrace: Add rcu_unsafe_filter_functions file Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 10/18] ftrace: Add selftest to check if RCU unsafe functions are filtered properly Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 11/18] ftrace: Create a RCU unsafe checker Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 12/18] ftrace: Add infrastructure to stop RCU unsafe checker from checking Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 13/18] ftrace: Disable RCU unsafe checker when function graph is enabled Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 14/18] ftrace: Disable the RCU unsafe checker when irqsoff " Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 15/18] ftrace/lockdep: Have the RCU lockdep splat show what function triggered Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 16/18] ftrace/rcu: Mark functions that are RCU unsafe Steven Rostedt
2013-09-04 16:43 ` Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 17/18] ftrace/cpuidle/x86: " Steven Rostedt
2013-09-04 14:36 ` [for-next][PATCH 18/18] ftrace: Print a message when the rcu checker is disabled Steven Rostedt
2013-09-04 18:27 ` [for-next][PATCH 00/18] ftrace/rcu: Handle unsafe RCU functions and ftrace callbacks Steven Rostedt
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