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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2016-11-03 15:50:01 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-11-09 23:45:27 +0100 |
| commit | d544abd5ff7d8b07c0c67682a63e4939c3c82914 (patch) | |
| tree | 11d30f0ccc45a9f5cbf7063564e642dd3d6c65f4 /lib | |
| parent | 5588f5afb4cfc33eb377b751ba4b97184373e8d6 (diff) | |
| download | linux-d544abd5ff7d8b07c0c67682a63e4939c3c82914.tar.gz linux-d544abd5ff7d8b07c0c67682a63e4939c3c82914.tar.xz | |
lib/radix-tree: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20161103145021.28528-6-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/radix-tree.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 8e6d552c40dd..4b8bb3618b83 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1642,32 +1642,31 @@ static __init void radix_tree_init_maxnodes(void) } } -static int radix_tree_callback(struct notifier_block *nfb, - unsigned long action, void *hcpu) +static int radix_tree_cpu_dead(unsigned int cpu) { - int cpu = (long)hcpu; struct radix_tree_preload *rtp; struct radix_tree_node *node; /* Free per-cpu pool of preloaded nodes */ - if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { - rtp = &per_cpu(radix_tree_preloads, cpu); - while (rtp->nr) { - node = rtp->nodes; - rtp->nodes = node->private_data; - kmem_cache_free(radix_tree_node_cachep, node); - rtp->nr--; - } + rtp = &per_cpu(radix_tree_preloads, cpu); + while (rtp->nr) { + node = rtp->nodes; + rtp->nodes = node->private_data; + kmem_cache_free(radix_tree_node_cachep, node); + rtp->nr--; } - return NOTIFY_OK; + return 0; } void __init radix_tree_init(void) { + int ret; radix_tree_node_cachep = kmem_cache_create("radix_tree_node", sizeof(struct radix_tree_node), 0, SLAB_PANIC | SLAB_RECLAIM_ACCOUNT, radix_tree_node_ctor); radix_tree_init_maxnodes(); - hotcpu_notifier(radix_tree_callback, 0); + ret = cpuhp_setup_state_nocalls(CPUHP_RADIX_DEAD, "lib/radix:dead", + NULL, radix_tree_cpu_dead); + WARN_ON(ret < 0); } |