From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f51.google.com (mail-ed1-f51.google.com [209.85.208.51]) (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 64D8E15A8 for ; Mon, 8 Jul 2024 01:00:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720400425; cv=none; b=GmLSSTHoNNlJLmlXxh5qYdNPkGYuRy/lNguAUfceVJrvxQ06vC7AGyvsqVaUkMvDER6iuG0KH6sdSAw1ILb+AToDTipe34dSt5EC0qkoI54z2zfIxv0EBnsVHtG5P+nTwZ9hwilLqBOQbp4ybgk6IhPtwrUJ/fUvbBVL/G8yqoU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720400425; c=relaxed/simple; bh=CWHs1RnZQWzXoqsf0MBy+IdSB7HhewCEIVGilfoyOcE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=nRRgHMeDZzcoebJP28C6PRBV+cEOmEC0NbNkWFRQGirceq5FEzKwgkdBZCzRoPAo1YpfSVGkk3CCet1VrIyWaylpziaCW68Ty2rBLTiepe1RrqLBkBQBlxg6T2vIzXXIe7xaLKaiCeTXr0WlEu4rtfkHKxRdA8g81lW9aPgXKLo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=U+V3YwmP; arc=none smtp.client-ip=209.85.208.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="U+V3YwmP" Received: by mail-ed1-f51.google.com with SMTP id 4fb4d7f45d1cf-58ef19aa69dso3394547a12.3 for ; Sun, 07 Jul 2024 18:00:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720400423; x=1721005223; darn=vger.kernel.org; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=d1GfZdw5ohet6O1nYdwlJF2qI1saYkoy2VpOhi2t3L8=; b=U+V3YwmPRqzJLkkmClMF0Sr2nFhobZyaq/N6EhCyVJqxx1b2oHC2v33UNCCafQfLdl FJFetJA9KhTEpnAjTi236mCnfD0+9KyjSftX+SkcUAJtc+OhKGWs2294jrCB5+iGkg1J EWow+CM/kap83MD+f+sAER78PnqRSEaJjZyDrH4jOfTtl6eeyT+hMkFeMKGFK9QsYgNA 4Vg6UqTcqYYbGWDuGrzZBhuyLekL7gfPKOgDF4EwCOwA5UFX5k7bovTGZQZwKtD5Pzd7 tLV90InimRM3Xg+X3FFBhvTA8CCMLXSZjEaGEh8kq/Qm0xLyiGt5Z7y/yxHI7wMDBgLd zE9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720400423; x=1721005223; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=d1GfZdw5ohet6O1nYdwlJF2qI1saYkoy2VpOhi2t3L8=; b=a2Yr5dly3foPfwBHvn7xifHVVpv+dOOcw3q8mlNxjJIIrj1h9OaQ92g296NiCtiMxm vmZIPKUvmHyJwDw+kWDRNCwRTvQg4aEjpXgxYC8XllalF7ztKhj8aoo49RDzN4np5FKw x7wHw4Hb6zp/IoD42lF0Lbwia0PgqyX9AeVhvWuv2aIhd6bmkwBt5FSDinlSNdez+fp6 aWoZqQAYuncJyJxCRivqR2JSws2NrJUkt4yfbu0aRlG1rBypxPfFwAJ68Jfc8Bco7KSu hXgdRtUBfs9TgzqdKpQwLrWHII1vvJDvocIN6gBSiS4jX6z+5ZHzt16CzM9//KAhQlF9 l5jA== X-Forwarded-Encrypted: i=1; AJvYcCUqEoTbBWb6OCIUyz3s2WMjtuE6+rD+qGy3sXjn5vCQf3nOQWXbQYrI/dm5EK4dhuDbJACMmAWGtd8TkWOD3BlsuemwxeioqkbApoza X-Gm-Message-State: AOJu0YyTOHf1itre3fzTOXZsuFsCV3umIusHwCoGMqAThMCKKigudct0 470Bqu9PReZoYte+3idlnDVpHsuJU9csrXcJhpLU3vLpzPO1szr6 X-Google-Smtp-Source: AGHT+IFF/9vfwlHq4uyZ+604i2WZBVekmv9JpXMh9mEhQ568VnjOZHP7nqNEXVDdNyqCqOx53fR5ag== X-Received: by 2002:a17:906:368c:b0:a75:fb2:8bb2 with SMTP id a640c23a62f3a-a77ba44d1a0mr576797666b.13.1720400422931; Sun, 07 Jul 2024 18:00:22 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a77df3d7cb3sm194480366b.100.2024.07.07.18.00.21 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 07 Jul 2024 18:00:21 -0700 (PDT) From: Wei Yang To: rppt@kernel.org, akpm@linux-foundation.org, brauner@kernel.org, oleg@redhat.com, mjguzik@gmail.com, tandersen@netflix.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wei Yang Subject: [PATCH v4 3/3] kernel/fork.c: put set_max_threads()/task_struct_whitelist() in __init section Date: Mon, 8 Jul 2024 01:00:10 +0000 Message-Id: <20240708010010.32347-3-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20240708010010.32347-1-richard.weiyang@gmail.com> References: <20240708010010.32347-1-richard.weiyang@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Function set_max_threads()/task_struct_whitelist() is only used by fork_init() during bootup. Let's add __init tag to them. Signed-off-by: Wei Yang Suggested-by: Oleg Nesterov --- kernel/fork.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/fork.c b/kernel/fork.c index e80e889543f3..da0b4545d380 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -997,7 +997,7 @@ void __init __weak arch_task_cache_init(void) { } /* * set_max_threads */ -static void set_max_threads(unsigned int max_threads_suggested) +static void __init set_max_threads(unsigned int max_threads_suggested) { u64 threads; unsigned long nr_pages = memblock_estimated_nr_pages(); @@ -1023,7 +1023,7 @@ static void set_max_threads(unsigned int max_threads_suggested) int arch_task_struct_size __read_mostly; #endif -static void task_struct_whitelist(unsigned long *offset, unsigned long *size) +static void __init task_struct_whitelist(unsigned long *offset, unsigned long *size) { /* Fetch thread_struct whitelist for the architecture. */ arch_thread_struct_whitelist(offset, size); -- 2.34.1