From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D6E57D5B866 for ; Mon, 15 Dec 2025 21:14:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zbShPAMEpuYk7VP+sBxYakt+kIWwZLISa7/RbIll34U=; b=rZfrZUgJ9bRxZJ6n7H5jiAe4db zs9EGdNh76JumAobMtullOHijzmqcZmoMkEIW60PWVGEqfmmz1kiHdEINIFTGZSZcwoQY8/Mhc3SG r6XDX6csIDnY19wozCvNhi/1kcLhdxyU23ElC30F6bT4t93/DAilkUwSe+Yto1Xo+DgsIKWHGEfHU wst9JUPGWVB6IUxpSSGneMrjBm9bRIllyfVqMeup3y2jvzcx9bbNvqKF9egQejPbLJxeVF3mKzBzp bnXpCkldHLaYQKFikio9aF6TBIce+DUHrQJGZUnLjZvY4/icncqC80ZvoxrGpYfzR+ahDLz4o5Jbm Y+R5tH7Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVFu6-00000004GCv-3WUy; Mon, 15 Dec 2025 21:14:50 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVFu3-00000004GBg-0iP1 for linux-arm-kernel@lists.infradead.org; Mon, 15 Dec 2025 21:14:49 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id D1783433CB; Mon, 15 Dec 2025 21:14:46 +0000 (UTC) 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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251215_131447_256943_C067DF73 X-CRM114-Status: GOOD ( 10.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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) { } struct module; struct ftrace_hash; +struct ftrace_func_entry; #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_cmd cmd); #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 @@ }) /* hash bits for specific function selection */ -#define FTRACE_HASH_DEFAULT_BITS 10 #define FTRACE_HASH_MAX_BITS 12 #ifdef CONFIG_DYNAMIC_FTRACE @@ -1185,7 +1184,7 @@ static void __add_hash_entry(struct ftrace_hash *hash, hash->count++; } -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 *head) mutex_unlock(&ftrace_lock); } -static void free_ftrace_hash(struct ftrace_hash *hash) +void free_ftrace_hash(struct ftrace_hash *hash) { if (!hash || hash == EMPTY_HASH) return; @@ -1305,7 +1304,7 @@ void ftrace_free_filter(struct ftrace_ops *ops) } EXPORT_SYMBOL_GPL(ftrace_free_filter); -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; -- 2.52.0