From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
"Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 1/6] rcu: Add KCSAN stubs to update.c
Date: Wed, 15 Apr 2020 10:56:09 -0700 [thread overview]
Message-ID: <20200415175614.10837-1-paulmck@kernel.org> (raw)
In-Reply-To: <20200415175543.GA10416@paulmck-ThinkPad-P72>
From: "Paul E. McKenney" <paulmck@kernel.org>
This commit adds stubs for KCSAN's data_race(), ASSERT_EXCLUSIVE_WRITER(),
and ASSERT_EXCLUSIVE_ACCESS() macros to allow code using these macros
to move ahead.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/update.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 28a8bdc..74a698a 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -51,6 +51,19 @@
#endif
#define MODULE_PARAM_PREFIX "rcupdate."
+#ifndef data_race
+#define data_race(expr) \
+ ({ \
+ expr; \
+ })
+#endif
+#ifndef ASSERT_EXCLUSIVE_WRITER
+#define ASSERT_EXCLUSIVE_WRITER(var) do { } while (0)
+#endif
+#ifndef ASSERT_EXCLUSIVE_ACCESS
+#define ASSERT_EXCLUSIVE_ACCESS(var) do { } while (0)
+#endif
+
#ifndef CONFIG_TINY_RCU
module_param(rcu_expedited, int, 0);
module_param(rcu_normal, int, 0);
--
2.9.5
next prev parent reply other threads:[~2020-04-15 17:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 17:55 [PATCH tip/core/rcu 0/6] Remove scheduler restriction, update for v5.8 Paul E. McKenney
2020-04-15 17:56 ` paulmck [this message]
2020-04-15 17:56 ` [PATCH tip/core/rcu 2/6] rcu: Make rcu_read_unlock_special() safe for rq/pi locks paulmck
2020-04-15 17:56 ` [PATCH tip/core/rcu 3/6] rcu: Don't set nesting depth negative in rcu_preempt_deferred_qs() paulmck
2020-04-15 17:56 ` [PATCH tip/core/rcu 4/6] rcu: Remove unused ->rcu_read_unlock_special.b.deferred_qs field paulmck
2020-04-15 17:56 ` [PATCH tip/core/rcu 5/6] rcu: Don't use negative nesting depth in __rcu_read_unlock() paulmck
2020-04-15 17:56 ` [PATCH tip/core/rcu 6/6] rcutorture: Add test of holding scheduler locks across rcu_read_unlock() paulmck
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