diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2022-08-02 17:39:28 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-08-31 05:07:19 -0700 |
| commit | 638dce227a41534bbc4fdd73280e73e0b3570048 (patch) | |
| tree | 61adbb4c01518203f9748e29b1d9d23363657814 /kernel/rcu | |
| parent | 5334da2af25eceb6a88ae162e69d6586b5cb9abc (diff) | |
| download | linux-638dce227a41534bbc4fdd73280e73e0b3570048.tar.bz2 | |
rcu/nocb: Add CPU number to CPU-{,de}offload failure messages
Offline CPUs cannot be offloaded or deoffloaded. Any attempt to offload
or deoffload an offline CPU causes a message to be printed on the console,
which is good, but this message does not contain the CPU number, which
is bad. Such a CPU number can be helpful when debugging, as it gives a
clear indication that the CPU in question is in fact offline. This commit
therefore adds the CPU number to the CPU-{,de}offload failure messages.
Cc: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_nocb.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h index f20aec4f4394..0a5f0ef41484 100644 --- a/kernel/rcu/tree_nocb.h +++ b/kernel/rcu/tree_nocb.h @@ -1111,7 +1111,7 @@ int rcu_nocb_cpu_deoffload(int cpu) if (!ret) cpumask_clear_cpu(cpu, rcu_nocb_mask); } else { - pr_info("NOCB: Can't CB-deoffload an offline CPU\n"); + pr_info("NOCB: Cannot CB-deoffload offline CPU %d\n", rdp->cpu); ret = -EINVAL; } } @@ -1196,7 +1196,7 @@ int rcu_nocb_cpu_offload(int cpu) if (!ret) cpumask_set_cpu(cpu, rcu_nocb_mask); } else { - pr_info("NOCB: Can't CB-offload an offline CPU\n"); + pr_info("NOCB: Cannot CB-offload offline CPU %d\n", rdp->cpu); ret = -EINVAL; } } |