From nobody Wed Dec 17 16:10:14 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E20525F99B; Mon, 15 Dec 2025 21:14:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765833288; cv=none; b=YBf+EfjVaNf3MIuTnvzvarXIi/QZ7uVg9+cKZSSLDuqq74pRYEENHmqB2yqIN4CAXPTInzeS0eSf5+QW7lV7RPPBsDXqaLtN4L62yYidyIY+YjjwFobkBePFJdRrNSU9JWrjBcFESkZQwU3Rw23TKXBP8625tT/FKZDRR1ZzKn8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765833288; c=relaxed/simple; bh=5BIA2Tyu/z9yvlHVqz+8RZrzeJHV2LsScF4IznePJN0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sJzP/ozz0VEjulo3StFsO+cC+SCN7FQ0FAXIl5HrP0JceuHu4uIoiQOrxWYMTIRv+4KuzFt3WP1nYcfcwfv6C1pBcwaaC8T1YTmSZ91osQTv/2vkUkhqchjSJzUv4xf2F0qcYAAoMknk5ZagAK8Z6OOWZZZjRZ4o0RoTE95qDI0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GCNG5YZ/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GCNG5YZ/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AE4F9C16AAE; Mon, 15 Dec 2025 21:14:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765833286; bh=5BIA2Tyu/z9yvlHVqz+8RZrzeJHV2LsScF4IznePJN0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GCNG5YZ/B9+6hVu+xSNbOtmFI7uZsIXZBken7R3nGGQWf34LGkwO6OGh164QCEP2P 4FlSwymFe6pae84FKnioTliiflZKgH047OxcQ4SK0Rg6anazjy5J2J/9nyGPQhPKHe lFNs0xGT9Q8zOTWV7jeSA5pOyMkfvrf+tFTdZMGpyaeTzEtGssAPfHbLVpIylaHNIZ dCXlw/+Ppgxt7boUH7CsZJxxrd29LuCmfCZ4M2l62QQeEaBr6jkxPWa6f9MCvDWQaY 6e5nnJQmhyrcZUyCQzDkz05LlNzlMnkEoNwZOQRob4xf6NX80fVQDc0NmWcsRJxtwA lGJxmFO2d5Dvg== From: Jiri Olsa To: Steven Rostedt , Florent Revest , Mark Rutland Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Menglong Dong , Song Liu Subject: [PATCHv5 bpf-next 3/9] ftrace: Export some of hash related functions Date: Mon, 15 Dec 2025 22:13:56 +0100 Message-ID: <20251215211402.353056-4-jolsa@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251215211402.353056-1-jolsa@kernel.org> References: <20251215211402.353056-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We are going to use these functions in following changes. Signed-off-by: Jiri Olsa --- include/linux/ftrace.h | 9 +++++++++ kernel/trace/ftrace.c | 7 +++---- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 505b7d3f5641..c0a72fcae1f6 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -82,6 +82,7 @@ static inline void early_trace_init(void) { } =20 struct module; struct ftrace_hash; +struct ftrace_func_entry; =20 #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_MODULES) && \ defined(CONFIG_DYNAMIC_FTRACE) @@ -405,6 +406,14 @@ enum ftrace_ops_cmd { typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cm= d cmd); =20 #ifdef CONFIG_DYNAMIC_FTRACE + +#define FTRACE_HASH_DEFAULT_BITS 10 + +struct ftrace_hash *alloc_ftrace_hash(int size_bits); +void free_ftrace_hash(struct ftrace_hash *hash); +struct ftrace_func_entry *add_hash_entry_direct(struct ftrace_hash *hash, + unsigned long ip, unsigned long direct); + /* The hash used to know what functions callbacks trace */ struct ftrace_ops_hash { struct ftrace_hash __rcu *notrace_hash; diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7e3a81bd6f1e..84aee9096a9e 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -68,7 +68,6 @@ }) =20 /* hash bits for specific function selection */ -#define FTRACE_HASH_DEFAULT_BITS 10 #define FTRACE_HASH_MAX_BITS 12 =20 #ifdef CONFIG_DYNAMIC_FTRACE @@ -1185,7 +1184,7 @@ static void __add_hash_entry(struct ftrace_hash *hash, hash->count++; } =20 -static struct ftrace_func_entry * +struct ftrace_func_entry * add_hash_entry_direct(struct ftrace_hash *hash, unsigned long ip, unsigned= long direct) { struct ftrace_func_entry *entry; @@ -1265,7 +1264,7 @@ static void clear_ftrace_mod_list(struct list_head *h= ead) mutex_unlock(&ftrace_lock); } =20 -static void free_ftrace_hash(struct ftrace_hash *hash) +void free_ftrace_hash(struct ftrace_hash *hash) { if (!hash || hash =3D=3D EMPTY_HASH) return; @@ -1305,7 +1304,7 @@ void ftrace_free_filter(struct ftrace_ops *ops) } EXPORT_SYMBOL_GPL(ftrace_free_filter); =20 -static struct ftrace_hash *alloc_ftrace_hash(int size_bits) +struct ftrace_hash *alloc_ftrace_hash(int size_bits) { struct ftrace_hash *hash; int size; --=20 2.52.0