diff options
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-02-01 12:19:33 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-02-03 10:58:05 -0500 |
| commit | 2b0cce0e190f8f0b37fe8102ae657f5d9eb0976d (patch) | |
| tree | 8082aad134bb617cb902ed7813c7d1246efcf17a /kernel/trace | |
| parent | b9b0c831bed2682c2e3e9f5420fb6985549ef020 (diff) | |
| download | linux-2b0cce0e190f8f0b37fe8102ae657f5d9eb0976d.tar.bz2 | |
tracing: Add ftrace_hash_key() helper function
Replace the couple of use cases that has small logic to produce the ftrace
function key id with a helper function. No need for duplicate code.
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 2d554a02241d..89240f62061c 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1185,6 +1185,15 @@ struct ftrace_page { static struct ftrace_page *ftrace_pages_start; static struct ftrace_page *ftrace_pages; +static __always_inline unsigned long +ftrace_hash_key(struct ftrace_hash *hash, unsigned long ip) +{ + if (hash->size_bits > 0) + return hash_long(ip, hash->size_bits); + + return 0; +} + struct ftrace_func_entry * ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip) { @@ -1195,11 +1204,7 @@ ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip) if (ftrace_hash_empty(hash)) return NULL; - if (hash->size_bits > 0) - key = hash_long(ip, hash->size_bits); - else - key = 0; - + key = ftrace_hash_key(hash, ip); hhd = &hash->buckets[key]; hlist_for_each_entry_rcu_notrace(entry, hhd, hlist) { @@ -1215,11 +1220,7 @@ static void __add_hash_entry(struct ftrace_hash *hash, struct hlist_head *hhd; unsigned long key; - if (hash->size_bits) - key = hash_long(entry->ip, hash->size_bits); - else - key = 0; - + key = ftrace_hash_key(hash, entry->ip); hhd = &hash->buckets[key]; hlist_add_head(&entry->hlist, hhd); hash->count++; |