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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-05-22 12:28:04 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-06-25 11:26:24 -0700 |
| commit | 5ab07a8df4d6c958ca63640d3f2ef896f0679c05 (patch) | |
| tree | bec4fc7663bde28befc616fae486ad1b55aa09df /kernel/rcu | |
| parent | 17294ce6a41d3fee6a9bfc52387c107a4607c1c9 (diff) | |
| download | blackbird-obmc-linux-5ab07a8df4d6c958ca63640d3f2ef896f0679c05.tar.gz blackbird-obmc-linux-5ab07a8df4d6c958ca63640d3f2ef896f0679c05.zip | |
srcu: Add address of first callback to rcutorture output
This commit adds the address of the first callback to the per-CPU rcutorture
output in order to allow lost wakeups to be more efficiently tracked down.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/srcutree.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c index 37bef2fe80e6..5a1a9a07b407 100644 --- a/kernel/rcu/srcutree.c +++ b/kernel/rcu/srcutree.c @@ -1271,11 +1271,11 @@ void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf) unsigned long l0, l1; unsigned long u0, u1; long c0, c1; - struct srcu_data *counts; + struct srcu_data *sdp; - counts = per_cpu_ptr(sp->sda, cpu); - u0 = counts->srcu_unlock_count[!idx]; - u1 = counts->srcu_unlock_count[idx]; + sdp = per_cpu_ptr(sp->sda, cpu); + u0 = sdp->srcu_unlock_count[!idx]; + u1 = sdp->srcu_unlock_count[idx]; /* * Make sure that a lock is always counted if the corresponding @@ -1283,12 +1283,13 @@ void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf) */ smp_rmb(); - l0 = counts->srcu_lock_count[!idx]; - l1 = counts->srcu_lock_count[idx]; + l0 = sdp->srcu_lock_count[!idx]; + l1 = sdp->srcu_lock_count[idx]; c0 = l0 - u0; c1 = l1 - u1; - pr_cont(" %d(%ld,%ld)", cpu, c0, c1); + pr_cont(" %d(%ld,%ld %1p)", + cpu, c0, c1, rcu_segcblist_head(&sdp->srcu_cblist)); s0 += c0; s1 += c1; } |
