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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-06-21 13:00:57 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-08-18 18:58:43 -0700 |
| commit | eb348b898290da242e46df75ab0b9772003e08b8 (patch) | |
| tree | f35ed4203ca3af3489e780430685a09bcb6a5f92 /kernel/rcutree.h | |
| parent | 2333210b26cf7aaf48d71343029afb860103d9f9 (diff) | |
| download | blackbird-op-linux-eb348b898290da242e46df75ab0b9772003e08b8.tar.gz blackbird-op-linux-eb348b898290da242e46df75ab0b9772003e08b8.zip | |
nohz_full: Add per-CPU idle-state tracking
This commit adds the code that updates the rcu_dyntick structure's
new fields to track the per-CPU idle state based on interrupts and
transitions into and out of the idle loop (NMIs are ignored because NMI
handlers cannot cleanly read out the time anyway). This code is similar
to the code that maintains RCU's idea of per-CPU idleness, but differs
in that RCU treats CPUs running in user mode as idle, where this new
code does not.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.h')
| -rw-r--r-- | kernel/rcutree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index 52d1be108e75..9dd8b177f1ac 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -553,6 +553,8 @@ static void rcu_boot_init_nocb_percpu_data(struct rcu_data *rdp); static void rcu_spawn_nocb_kthreads(struct rcu_state *rsp); static void rcu_kick_nohz_cpu(int cpu); static bool init_nocb_callback_list(struct rcu_data *rdp); +static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq); +static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq); static void rcu_sysidle_init_percpu_data(struct rcu_dynticks *rdtp); #endif /* #ifndef RCU_TREE_NONCORE */ |
