linux-stable.git/kernel/rcutiny_plugin.h, branch master

rcu: Move RCU-related source code to kernel/rcu directory

2013-10-15T19:53:31+00:00

Signed-off-by: Paul E. McKenney 
Reviewed-by: Ingo Molnar

rcu: Add const annotation to char * for RCU tracepoints and functions

2013-07-29T21:07:49+00:00

All the RCU tracepoints and functions that reference char pointers do
so with just 'char *' even though they do not modify the contents of
the string itself. This will cause warnings if a const char * is used
in one of these functions.

The RCU tracepoints store the pointer to the string to refer back to them
when the trace output is displayed. As this can be minutes, hours or
even days later, those strings had better be constant.

This change also opens the door to allow the RCU tracepoint strings and
their addresses to be exported so that userspace tracing tools can
translate the contents of the pointers of the RCU tracepoints.

Signed-off-by: Steven Rostedt

rcu: Shrink TINY_RCU by reworking CPU-stall ifdefs

2013-06-10T20:45:53+00:00

TINY_RCU's reset_cpu_stall_ticks() and check_cpu_stalls() functions
are defined unconditionally, and are empty functions if CONFIG_RCU_TRACE
is disabled (which in turns disables detection of RCU CPU stalls).
This commit saves a few lines of source code by defining these functions
only if CONFIG_RCU_TRACE=y.

Signed-off-by: Paul E. McKenney

rcu: Consolidate rcutiny_plugin.h ifdefs

2013-06-10T20:45:52+00:00

This commit rearranges code in order to allow ifdefs to be consolidated
in kernel/rcutiny_plugin.h, simplifying the code.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Remove check_cpu_stall_preempt()

2013-06-10T20:45:51+00:00

With the removal of CONFIG_TINY_PREEMPT_RCU, check_cpu_stall_preempt()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Simplify RCU_TINY RCU callback invocation

2013-06-10T20:45:51+00:00

TINY_PREEMPT_RCU could use a kthread to handle RCU callback invocation,
which required an API to abstract kthread vs. softirq invocation.
Now that TINY_PREEMPT_RCU is no longer with us, this commit retires
this API in favor of direct use of the relevant softirq primitives.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Remove rcu_preempt_process_callbacks()

2013-06-10T20:45:50+00:00

With the removal of CONFIG_TINY_PREEMPT_RCU, rcu_preempt_process_callbacks()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Remove rcu_preempt_remove_callbacks()

2013-06-10T20:45:50+00:00

With the removal of CONFIG_TINY_PREEMPT_RCU, rcu_preempt_remove_callbacks()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Remove rcu_preempt_check_callbacks()

2013-06-10T20:45:50+00:00

With the removal of CONFIG_TINY_PREEMPT_RCU, rcu_preempt_check_callbacks()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcu: Remove show_tiny_preempt_stats()

2013-06-10T20:45:49+00:00

With the removal of CONFIG_TINY_PREEMPT_RCU, show_tiny_preempt_stats()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett