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rcu: Move gp_state_names[] and gp_state_getname() to tree_stall.h

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Only tree_stall.h needs to get name from GP state, so this commit
moves the gp_state_names[] array and the gp_state_getname()
from kernel/rcu/tree.h and kernel/rcu/tree.c, respectively, to
kernel/rcu/tree_stall.h.  While moving gp_state_names[], this commit
uses the GCC syntax to ensure that the right string is associated with
the right CPP macro.

Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Lai Jiangshan
2019-10-15 10:28:47 +00:00
committed by Paul E. McKenney
parent 4778339df0
commit e2167b38c8
3 changed files with 22 additions and 22 deletions
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10
kernel/rcu/tree.c
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@@ -528,16 +528,6 @@ static struct rcu_node *rcu_get_root(void)
return &rcu_state.node[0];
}
/*
* Convert a ->gp_state value to a character string.
*/
static const char *gp_state_getname(short gs)
{
if (gs < 0 || gs >= ARRAY_SIZE(gp_state_names))
return "???";
return gp_state_names[gs];
}
/*
* Send along grace-period-related data for rcutorture diagnostics.
*/