From nobody Sun Oct 5 23:54:46 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 9BBFD289E1D; Tue, 29 Jul 2025 10:29:12 +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=1753784952; cv=none; b=LG8AjfDXriY+PZbpUTSOGjTJZV+C5ps/LDHF05Hlbwdews5OznWe0/st4dUSD9rpXTRKMmQL0d9zLoHNUf8RbVegLTAvpNh2MT3+N9geKGXmeIHiQI9+Oti/5h8/JMno03/G7MXCdaPyw+gHPgQwGQq6LHIdw3D6JsCq7eTD2wA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753784952; c=relaxed/simple; bh=s36VlYHt7rzpyx/CrkVrQ1GGY7J1e5RhRFc94AGzl2c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=i63VjITmokCN7gPdnE9sQ8SuV4LQWSK2tBGvsII4HkkWXAx/234DfFjdEmHfR3XMYb21uWdg8Q75+rWdewe1LeKZAm5euwd8THhoooVLXT0wnIDkSJXee9EyeYVt9EV3KjgbqqnjCQFsMFMMfmlfFY47rHI3LrufwWix1VWcsUk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fY1iq88j; 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="fY1iq88j" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45FCFC4CEEF; Tue, 29 Jul 2025 10:29:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753784952; bh=s36VlYHt7rzpyx/CrkVrQ1GGY7J1e5RhRFc94AGzl2c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fY1iq88jHx1GrHviGUxlO4tWGmKap18d55ll7NauQ+Mcq2RPpapqthWT85hfQeDn3 7yqEphpl+ThJweK0D03HOUAkr8NU31Gqbssej/nk2Zsc82MCTXIv3d/deV/lfbuzoa Tz+xdweZ5lVOsbnekAAAYcsXeoCPp18xQ5bgVMVGFcWKX6M9mPNlJb3HIMXX/twinF aLhy7gMyHR31gfNdf1ktTYnSgBih1tAgdDvnQESrgyvoNfiKMECvxEpSOtGHgyA+Cz QbNFKR/Ue7Qx3CKCTikYs8xeLbPwg+kXXnlg9fSzmXNB5MV6AXVEp5/OFmFJ1cGTgu aJuPWlhNquGIQ== 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 Subject: [RFC 05/10] ftrace: Export some of hash related functions Date: Tue, 29 Jul 2025 12:28:08 +0200 Message-ID: <20250729102813.1531457-6-jolsa@kernel.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250729102813.1531457-1-jolsa@kernel.org> References: <20250729102813.1531457-1-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 | 16 ++++++++++++++++ kernel/trace/ftrace.c | 7 +++---- kernel/trace/trace.h | 8 -------- 3 files changed, 19 insertions(+), 12 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 8761765d9abc..9a6fcdafeda2 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -397,6 +397,22 @@ 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 { + unsigned long size_bits; + struct hlist_head *buckets; + unsigned long count; + unsigned long flags; + struct rcu_head rcu; +}; + +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 755d5550ac44..fcb8f2d3172b 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 @@ -1189,7 +1188,7 @@ 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; @@ -1269,7 +1268,7 @@ 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; @@ -1309,7 +1308,7 @@ 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; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index bd084953a98b..74ef7755f361 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -899,14 +899,6 @@ enum { FTRACE_HASH_FL_MOD =3D (1 << 0), }; =20 -struct ftrace_hash { - unsigned long size_bits; - struct hlist_head *buckets; - unsigned long count; - unsigned long flags; - struct rcu_head rcu; -}; - struct ftrace_func_entry * ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip); =20 --=20 2.50.1