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authorTejun Heo <tj@kernel.org>2015-02-13 14:37:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-13 21:21:37 -0800
commitad853b48cb4650285e8544eebbba5bbd9274ee15 (patch)
tree506c8d73f8931274aa9a00e68621db785467f31a /kernel/rcu
parente8e6d97c9bf734c42322dbed0f882ef11bfe7b58 (diff)
downloadlinux-ad853b48cb4650285e8544eebbba5bbd9274ee15.tar.bz2
rcu: use %*pb[l] to print bitmaps including cpumasks and nodemasks
printk and friends can now format bitmaps using '%*pb[l]'. cpumask and nodemask also provide cpumask_pr_args() and nodemask_pr_args() respectively which can be used to generate the two printf arguments necessary to format the specified cpu/nodemask. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/tree_plugin.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 2e850a51bb8f..0d7bbe3095ad 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -49,7 +49,6 @@ DEFINE_PER_CPU(char, rcu_cpu_has_work);
static cpumask_var_t rcu_nocb_mask; /* CPUs to have callbacks offloaded. */
static bool have_rcu_nocb_mask; /* Was rcu_nocb_mask allocated? */
static bool __read_mostly rcu_nocb_poll; /* Offload kthread are to poll. */
-static char __initdata nocb_buf[NR_CPUS * 5];
#endif /* #ifdef CONFIG_RCU_NOCB_CPU */
/*
@@ -2386,8 +2385,8 @@ void __init rcu_init_nohz(void)
cpumask_and(rcu_nocb_mask, cpu_possible_mask,
rcu_nocb_mask);
}
- cpulist_scnprintf(nocb_buf, sizeof(nocb_buf), rcu_nocb_mask);
- pr_info("\tOffload RCU callbacks from CPUs: %s.\n", nocb_buf);
+ pr_info("\tOffload RCU callbacks from CPUs: %*pbl.\n",
+ cpumask_pr_args(rcu_nocb_mask));
if (rcu_nocb_poll)
pr_info("\tPoll for callbacks from no-CBs CPUs.\n");