mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
rcu: Convert rcu_gpnum_ovf() to ->gp_seq
This commit converts rcu_gpnum_ovf() to use ->gp_seq instead of ->gpnum. Same size unsigned long, so same approach. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
parent
67e14c1e39
commit
a66ae8ae35
1 changed files with 3 additions and 2 deletions
|
@ -1089,14 +1089,15 @@ static int rcu_is_cpu_rrupt_from_idle(void)
|
|||
/*
|
||||
* We are reporting a quiescent state on behalf of some other CPU, so
|
||||
* it is our responsibility to check for and handle potential overflow
|
||||
* of the rcu_node ->gpnum counter with respect to the rcu_data counters.
|
||||
* of the rcu_node ->gp_seq counter with respect to the rcu_data counters.
|
||||
* After all, the CPU might be in deep idle state, and thus executing no
|
||||
* code whatsoever.
|
||||
*/
|
||||
static void rcu_gpnum_ovf(struct rcu_node *rnp, struct rcu_data *rdp)
|
||||
{
|
||||
raw_lockdep_assert_held_rcu_node(rnp);
|
||||
if (ULONG_CMP_LT(READ_ONCE(rdp->gpnum) + ULONG_MAX / 4, rnp->gpnum))
|
||||
if (ULONG_CMP_LT(rcu_seq_current(&rdp->gp_seq) + ULONG_MAX / 4,
|
||||
rnp->gp_seq))
|
||||
WRITE_ONCE(rdp->gpwrap, true);
|
||||
if (ULONG_CMP_LT(rdp->rcu_iw_gpnum + ULONG_MAX / 4, rnp->gpnum))
|
||||
rdp->rcu_iw_gpnum = rnp->gpnum + ULONG_MAX / 4;
|
||||
|
|
Loading…
Reference in a new issue