From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-5.mta0.migadu.com [91.218.175.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60DE52EEE99 for ; Mon, 14 Sep 2026 03:34:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789356868; cv=none; b=eg9EYNTX3G2jrT9VEzdGn8W0lmUNlL2HPhFtJf/m8JoSkdy4KpIIn7WVZdmEQmHaAe+KRfaIumiZh2jWRUW/EvEn2fJ4M65u+kHYe+cCKaEiYSLKDUmS8fR8K0KgzXQPuQ1fy6W5cUBlgMMLS9pGA7Y5YjurSENRR0hz/ak8UXU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789356868; c=relaxed/simple; bh=GcO7629LLmWdKveTN71W2Hm5N+m1skxoYeOST5aDrko=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=iAGQIva1NBCTNFgP918ifccsXoPVaaiF3EjrJeCaRGByfDvpvUGv697hIzcd8nWk/U3BttJydO9q6zRvjmCtdBaw2CzMHLRB19THJIacEx4duDDnP4i0nAaLhJM4gECUrIGcGlMrr8GL5dHRvK5MnsFi41ZXG3AM73R05zNdlFs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=quOVkhvj; arc=none smtp.client-ip=91.218.175.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="quOVkhvj" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=GcO7629LLmWdKveTN71W2Hm5N+m1skxoYeOST5aDrko=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1789356855; v=1; x=1789961655; b=quOVkhvjkgIAyv+cCaLsZXZhIctFJxSfOV0sKiZ22mIcuMjCDn4z5XNF385jQy85Cwv5IkAW x0DkSZf63o4CgbfK7GXbduRXa089ONgyggIAuRc7T27BW4NM4+MhCzVxO63zp0zRWDmdaJ8rdKa d2Iuk39tME82mh6nv94ZdsQU= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 6ddbd71e14968a1a; Mon, 14 Sep 2026 03:34:15 +0000 X-Mizu-Trace-ID: 6ddbd71e14968a1a X-Migadu-Flow: FLOW_OUT From: Ye Liu Date: Mon, 14 Sep 2026 11:34:02 +0800 Subject: [PATCH 3/3] mm/vmalloc: extract show_busy_info from vmalloc_info_show Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260914-vmalloc_study-v1-3-526f68559706@linux.dev> References: <20260914-vmalloc_study-v1-0-526f68559706@linux.dev> In-Reply-To: <20260914-vmalloc_study-v1-0-526f68559706@linux.dev> To: Andrew Morton , Uladzislau Rezki Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Ye Liu X-Mailer: b4 0.14.3 From: Ye Liu Extract the busy vmap area iteration into show_busy_info, mirroring the existing show_purge_info pattern. Signed-off-by: Ye Liu --- mm/vmalloc.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 797933ba9451..7638845377f5 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -5345,12 +5345,12 @@ static void show_purge_info(struct seq_file *m) } } -static int vmalloc_info_show(struct seq_file *m, void *p) +static void show_busy_info(struct seq_file *m) { struct vmap_node *vn; struct vmap_area *va; struct vm_struct *v; - unsigned int *counters; + unsigned int *counters = NULL; if (IS_ENABLED(CONFIG_NUMA)) counters = kmalloc_array(nr_node_ids, sizeof(unsigned int), GFP_KERNEL); @@ -5415,12 +5415,18 @@ static int vmalloc_info_show(struct seq_file *m, void *p) spin_unlock(&vn->busy.lock); } + if (IS_ENABLED(CONFIG_NUMA)) + kfree(counters); +} + +static int vmalloc_info_show(struct seq_file *m, void *p) +{ + show_busy_info(m); + /* * As a final step, dump "unpurged" areas. */ show_purge_info(m); - if (IS_ENABLED(CONFIG_NUMA)) - kfree(counters); return 0; } -- 2.25.1