diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2026-06-06 14:39:27 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-06-07 10:03:00 -0700 |
| commit | af7c32365090a1a8ff981f85d7c24b344a2eaa75 (patch) | |
| tree | 78c851767f75e21609d56cc61cfffd76e0852e64 /kernel/trace | |
| parent | e57f13eaab259ece7c9e8d81ba2c40c4f057ca2c (diff) | |
ftrace: Add ftrace_hash_remove function
Adding ftrace_hash_remove function that removes all entries
from struct ftrace_hash object without freeing them.
It will be used in following changes where entries are allocated
as part of another structure and are free-ed separately.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260606123955.345967-3-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 57ab01fd00bd..45548b0200eb 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1249,6 +1249,25 @@ remove_hash_entry(struct ftrace_hash *hash, hash->count--; } +void ftrace_hash_remove(struct ftrace_hash *hash) +{ + struct ftrace_func_entry *entry; + struct hlist_head *hhd; + struct hlist_node *tn; + int size; + int i; + + if (!hash || !hash->count) + return; + size = 1 << hash->size_bits; + for (i = 0; i < size; i++) { + hhd = &hash->buckets[i]; + hlist_for_each_entry_safe(entry, tn, hhd, hlist) + remove_hash_entry(hash, entry); + } + FTRACE_WARN_ON(hash->count); +} + static void ftrace_hash_clear(struct ftrace_hash *hash) { struct hlist_head *hhd; |