From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f74.google.com (mail-ej1-f74.google.com [209.85.218.74]) (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 8F590339708 for ; Thu, 25 Jun 2026 16:00:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782403210; cv=none; b=pSgD6dIxLUKp3RT0coSVeK32uyn9uehdOD1isBlxKvTBXTUZTWKlK6NkvTRAwf8FFNL0vpG0iznXqApkkpfa1RdCvymnCOHaXjxuUUzmzGgD1ImTT1e3sSoFoEC+h3DTETR1H7YjDMnUyuqH71KGdVWy6UUSrEdeBhtYpkBSHu0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782403210; c=relaxed/simple; bh=AAs7hDw5Y0zizKctVFFodNfAoXDc4J71TtqxCz2s6xs=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=B9Lcd7839r1BD/LW9TTiz99hRAGhyA/z42dlrBQ95k2wb/Ty3EJCdUoHU96HZqJqzC6zyuPbmf2FWPX5PryfBA04IJwk1vuS7mLCt1WFDM0GUokFvRJJPIYI7SU1LV618rD+Rx35j9hVWOpqg4dN2ANBn0g/z93r35ErGPCe4Y0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--mclapinski.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=gzUqfRX7; arc=none smtp.client-ip=209.85.218.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--mclapinski.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gzUqfRX7" Received: by mail-ej1-f74.google.com with SMTP id a640c23a62f3a-c0cd278cd17so227550266b.0 for ; Thu, 25 Jun 2026 09:00:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782403205; x=1783008005; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=aeIBkMsWRS/DGQcr9sTXzFBrezzm1A4urK40dOoini8=; b=gzUqfRX7FQ/MoTT5PgLY2c0z8sOnwNHsGCtKy3CF1wS/yuk43DdVUTpoamMnIWy7Ks cGSiZ9PKpR0JPOIAVOeixNaKBm8TJgYmZuCuWq105eZPBTfybgxiMKjMpO93aH9O18aJ C4+d0DqHGkw1p2rjU5Z74ajTweeTftQBVC8QWWrDzY89B7/dAMvadasmQ7TaQPhzZsiP CuqTEWsT2nwU6RpR/Gotk9n5LmzSFCXPnq7qQhBJOaTf+k8ddbDnjEHr6zI3fMJHKoUc azywkwy3GqR4m0G88WymdYx/oTdK0t4n/cSmXfKQMHZEFMEQarL7kctBcldQrQJEMa3g 1iVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782403205; x=1783008005; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=aeIBkMsWRS/DGQcr9sTXzFBrezzm1A4urK40dOoini8=; b=tHRYSJ78cPN8IgYwO9dp547JQmpk/+dab0DX53y/Iv5otMgSdnuH+qLhpkFpoHk5+u orNbShcITZu4XHS+7UxIbuKBZmcuCO7/wLVV3IRxb3HxkO0SzXjNfzF4ikaJpzqzhcHh qiYYGJu9YD5N0GQDvAa9tk3DsjJgLXUMZofs/DHXlfXRseeWB0KVXfhApATx1BcN0+Wo rUb8Qm+5K3x9eNUL7z/nmJsqXaJDCVKHX5apSRgXGDkbpz8usm9ab9E3yf8CvIMXtUej PAQ6kvWfDK+WDP6HqqK20iHppsJ+AsMLGHtMUdfa34mxgMdmF4w8EzA/OMG6WB6QGD4k /iPQ== X-Gm-Message-State: AOJu0YyHBhmEvqPPxQzgKevdBIiEM3dpt4TzU7dX1ex64DFIgDppGpmi hNeGzV4guPTP1/g5EZ1dTJo2jOGluNNemNgXYCjlXNLioIxLkJyJy5n7F04QDZKEyi+f8l+V+Vx amRIhcQAL6LxWyf4ENfSbvA== X-Received: from ejzk21.prod.google.com ([2002:a17:906:a395:b0:bf8:57f5:a9d2]) (user=mclapinski job=prod-delivery.src-stubby-dispatcher) by 2002:a17:907:5ce:b0:be1:d908:ce23 with SMTP id a640c23a62f3a-c1205db4d26mr269610766b.21.1782403205261; Thu, 25 Jun 2026 09:00:05 -0700 (PDT) Date: Thu, 25 Jun 2026 17:59:54 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260625155954.1948908-1-mclapinski@google.com> Subject: [PATCH] ipmi:si: Add async init to ipmi_si From: Michal Clapinski To: Corey Minyard , openipmi-developer@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Michal Clapinski Content-Type: text/plain; charset="UTF-8" Added a new config option to allow offloading slow part of init_ipmi_si. Saves 100ms on my system. Signed-off-by: Michal Clapinski --- drivers/char/ipmi/Kconfig | 8 ++++++ drivers/char/ipmi/ipmi_si_intf.c | 48 +++++++++++++++++++++----------- 2 files changed, 40 insertions(+), 16 deletions(-) diff --git a/drivers/char/ipmi/Kconfig b/drivers/char/ipmi/Kconfig index 669f76000197..8419409dc3b9 100644 --- a/drivers/char/ipmi/Kconfig +++ b/drivers/char/ipmi/Kconfig @@ -67,6 +67,14 @@ config IPMI_SI Currently, only KCS and SMIC are supported. If you are using IPMI, you should probably say "y" here. +config IPMI_SI_ASYNC_INIT + bool 'Asynchronous initialization of IPMI System Interface' + depends on IPMI_SI + default n + help + Enables asynchronous init of the IPMI System Interface. + It speeds up the boot time. + config IPMI_SSIF tristate 'IPMI SMBus handler (SSIF)' depends on I2C diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 9a9d12be9bf7..3e422c7df60a 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -39,6 +39,7 @@ #include #include #include +#include #include "ipmi_si.h" #include "ipmi_si_sm.h" #include @@ -2174,25 +2175,10 @@ static bool __init ipmi_smi_info_same(struct smi_info *e1, struct smi_info *e2) e1->io.addr_data == e2->io.addr_data); } -static int __init init_ipmi_si(void) +static int __init smi_init_scan(void) { struct smi_info *e, *e2; - if (initialized) - return 0; - - ipmi_hardcode_init(); - - pr_info("IPMI System Interface driver\n"); - - ipmi_si_platform_init(); - - ipmi_si_pci_init(); - - ipmi_si_ls2k_init(); - - ipmi_si_parisc_init(); - mutex_lock(&smi_infos_lock); /* @@ -2271,6 +2257,36 @@ static int __init init_ipmi_si(void) return 0; } } + +static void __init async_smi_init(void *data, async_cookie_t cookie) +{ + smi_init_scan(); +} + +static int __init init_ipmi_si(void) +{ + if (initialized) + return 0; + + ipmi_hardcode_init(); + + pr_info("IPMI System Interface driver\n"); + + ipmi_si_platform_init(); + + ipmi_si_pci_init(); + + ipmi_si_ls2k_init(); + + ipmi_si_parisc_init(); + + if (IS_ENABLED(CONFIG_IPMI_SI_ASYNC_INIT)) { + async_schedule(async_smi_init, NULL); + return 0; + } + + return smi_init_scan(); +} module_init(init_ipmi_si); static void wait_msg_processed(struct smi_info *smi_info) -- 2.55.0.rc0.799.gd6f94ed593-goog