From nobody Tue Dec 2 00:05:27 2025 Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [160.30.148.34]) (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 38BEECA4E; Wed, 26 Nov 2025 09:36:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=160.30.148.34 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764149772; cv=none; b=PFNCdsRhZ3qmI3qVMF68IjzUC+7VhFoHwG89BhgH/E09gTXt303exOcXnI8ONdYJYgKhtd9vVc/TunjgO3RZD/zcCdCXRhdl4DWMWUZ//6NVeWP6qwLXWrxD3rpOEAepzqutQWEDFONLFasjg0cQOp+Gk/9xGsn6XAFny5KLXk0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764149772; c=relaxed/simple; bh=4LAMaG47gRXDPCLwrq5B6EQpVTnMgHX8SMFuApNYACI=; h=Date:Message-ID:In-Reply-To:References:Mime-Version:From:To:Cc: Subject:Content-Type; b=B4I4LUx3QJCiMK+2IqwhGRdoDkqodSQJ5zDO7ZsqkhBUpDihwS4mlhlVeXHE7DVbb6ZBC3jAMjFTIJnwxuB3r5wXaHEX0mU2XU/xyj16n+sE87AHg0SFd5DWV5yeNOO69QHs1IcuYsszMzzfxbWaH5YI6ORyc3Yeg4MRYK3sTig= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn; spf=pass smtp.mailfrom=zte.com.cn; arc=none smtp.client-ip=160.30.148.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zte.com.cn Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4dGZF317yBz6Fy6K; Wed, 26 Nov 2025 17:36:07 +0800 (CST) Received: from xaxapp01.zte.com.cn ([10.88.99.176]) by mse-fl2.zte.com.cn with SMTP id 5AQ9Znur087149; Wed, 26 Nov 2025 17:35:50 +0800 (+08) (envelope-from wang.yaxin@zte.com.cn) Received: from mapi (xaxapp02[null]) by mapi (Zmail) with MAPI id mid32; Wed, 26 Nov 2025 17:35:52 +0800 (CST) Date: Wed, 26 Nov 2025 17:35:52 +0800 (CST) X-Zmail-TransId: 2afa6926c9f8bf4-1e0f0 X-Mailer: Zmail v1.0 Message-ID: <20251126173552333XoJZN20143fWbsdTEtWoU@zte.com.cn> In-Reply-To: <20251126172445319I7DWJm-KEEuCmqtLupteE@zte.com.cn> References: 20251126172445319I7DWJm-KEEuCmqtLupteE@zte.com.cn Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 From: To: Cc: , , , , , , , , Subject: =?UTF-8?B?W1BBVENIIHYyIDMvM10gZmdyYXBoOiBSZW1vdmUgY29hcnNlIFBJRCBmaWx0ZXJpbmcgZnJvbSBncmFwaF9lbnRyeSgp?= X-MAIL: mse-fl2.zte.com.cn 5AQ9Znur087149 X-TLS: YES X-SPF-DOMAIN: zte.com.cn X-ENVELOPE-SENDER: wang.yaxin@zte.com.cn X-SPF: None X-SOURCE-IP: 10.5.228.133 unknown Wed, 26 Nov 2025 17:36:07 +0800 X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 6926CA07.000/4dGZF317yBz6Fy6K Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Shengming Hu With PID filtering working via ftrace_pids_enabled() and fgraph_pid_func, the coarse-grained ftrace_trace_task() check in graph_entry() is obsolete. It was only a fallback for uninitialized op->private (now fixed), and its removal ensures consistent PID filtering with standard function tracing. Also remove unused ftrace_trace_task() definition from trace.h. Signed-off-by: Shengming Hu --- kernel/trace/trace.h | 9 --------- kernel/trace/trace_functions_graph.c | 3 --- 2 files changed, 12 deletions(-) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 58be6d741..2bc985739 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1159,11 +1159,6 @@ struct ftrace_func_command { char *params, int enable); }; extern bool ftrace_filter_param __initdata; -static inline int ftrace_trace_task(struct trace_array *tr) -{ - return this_cpu_read(tr->array_buffer.data->ftrace_ignore_pid) !=3D - FTRACE_PID_IGNORE; -} extern int ftrace_is_dead(void); int ftrace_create_function_files(struct trace_array *tr, struct dentry *parent); @@ -1181,10 +1176,6 @@ void ftrace_clear_pids(struct trace_array *tr); int init_function_trace(void); void ftrace_pid_follow_fork(struct trace_array *tr, bool enable); #else -static inline int ftrace_trace_task(struct trace_array *tr) -{ - return 1; -} static inline int ftrace_is_dead(void) { return 0; } static inline int ftrace_create_function_files(struct trace_array *tr, diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_func= tions_graph.c index 44d5dc503..cb9aef060 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -233,9 +233,6 @@ static int graph_entry(struct ftrace_graph_ent *trace, return 1; } - if (!ftrace_trace_task(tr)) - return 0; - if (ftrace_graph_ignore_func(gops, trace)) return 0; --=20 2.25.1