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Merge branch 'linus' into sched/core, to pick up fixes

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Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2017-11-08 10:17:15 +01:00
commit 8a103df440
13316 changed files with 20939 additions and 4698 deletions
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1
kernel/rcu/Makefile
View file

@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
# Any varying coverage in these files is non-deterministic
# and is generally not a function of system call inputs.
KCOV_INSTRUMENT := n

2
kernel/rcu/srcutree.c
View file

@ -854,7 +854,7 @@ void __call_srcu(struct srcu_struct *sp, struct rcu_head *rhp,
/**
* call_srcu() - Queue a callback for invocation after an SRCU grace period
* @sp: srcu_struct in queue the callback
* @head: structure to be used for queueing the SRCU callback.
* @rhp: structure to be used for queueing the SRCU callback.
* @func: function to be invoked after the SRCU grace period
*
* The callback function will be invoked some time after a full SRCU

9
kernel/rcu/sync.c
View file

@ -85,6 +85,9 @@ void rcu_sync_init(struct rcu_sync *rsp, enum rcu_sync_type type)
}
/**
* rcu_sync_enter_start - Force readers onto slow path for multiple updates
* @rsp: Pointer to rcu_sync structure to use for synchronization
*
* Must be called after rcu_sync_init() and before first use.
*
* Ensures rcu_sync_is_idle() returns false and rcu_sync_{enter,exit}()
@ -142,7 +145,7 @@ void rcu_sync_enter(struct rcu_sync *rsp)
/**
* rcu_sync_func() - Callback function managing reader access to fastpath
* @rsp: Pointer to rcu_sync structure to use for synchronization
* @rhp: Pointer to rcu_head in rcu_sync structure to use for synchronization
*
* This function is passed to one of the call_rcu() functions by
* rcu_sync_exit(), so that it is invoked after a grace period following the
@ -158,9 +161,9 @@ void rcu_sync_enter(struct rcu_sync *rsp)
* rcu_sync_exit(). Otherwise, set all state back to idle so that readers
* can again use their fastpaths.
*/
static void rcu_sync_func(struct rcu_head *rcu)
static void rcu_sync_func(struct rcu_head *rhp)
{
struct rcu_sync *rsp = container_of(rcu, struct rcu_sync, cb_head);
struct rcu_sync *rsp = container_of(rhp, struct rcu_sync, cb_head);
unsigned long flags;
BUG_ON(rsp->gp_state != GP_PASSED);

18
kernel/rcu/tree.c
View file

@ -3097,9 +3097,10 @@ __call_rcu(struct rcu_head *head, rcu_callback_t func,
* read-side critical sections have completed. call_rcu_sched() assumes
* that the read-side critical sections end on enabling of preemption
* or on voluntary preemption.
* RCU read-side critical sections are delimited by :
* - rcu_read_lock_sched() and rcu_read_unlock_sched(), OR
* - anything that disables preemption.
* RCU read-side critical sections are delimited by:
*
* - rcu_read_lock_sched() and rcu_read_unlock_sched(), OR
* - anything that disables preemption.
*
* These may be nested.
*
@ -3124,11 +3125,12 @@ EXPORT_SYMBOL_GPL(call_rcu_sched);
* handler. This means that read-side critical sections in process
* context must not be interrupted by softirqs. This interface is to be
* used when most of the read-side critical sections are in softirq context.
* RCU read-side critical sections are delimited by :
* - rcu_read_lock() and rcu_read_unlock(), if in interrupt context.
* OR
* - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context.
* These may be nested.
* RCU read-side critical sections are delimited by:
*
* - rcu_read_lock() and rcu_read_unlock(), if in interrupt context, OR
* - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context.
*
* These may be nested.
*
* See the description of call_rcu() for more detailed information on
* memory ordering guarantees.