From: shiva.linuxworks@gmail.com To: rjw@rjwysocki.net, pavel@ucw.cz, len.brown@intel.com, linux-pm@vger.kernel.org, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Shivamurthy Shastri <sshivamurthy@micron.com> Subject: [PATCH v2 2/2] nvme: Add abrupt shutdown support Date: Mon, 26 Jul 2021 13:22:23 +0000 [thread overview] Message-ID: <20210726132223.1661-3-sshivamurthy@micron.com> (raw) In-Reply-To: <20210726132223.1661-1-sshivamurthy@micron.com> From: Shivamurthy Shastri <sshivamurthy@micron.com> Enabling the abrupt shutdown support. In this shutdown type, the host does not need to send Delete I/O Submission Queue and Delete I/O Completion Queue commands to the device. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> --- drivers/nvme/host/core.c | 7 ++++++- drivers/nvme/host/pci.c | 6 ++++-- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 11779be42186..760ffb071c1b 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -20,6 +20,7 @@ #include <linux/ptrace.h> #include <linux/nvme_ioctl.h> #include <linux/pm_qos.h> +#include <linux/suspend.h> #include <asm/unaligned.h> #include "nvme.h" @@ -2159,7 +2160,11 @@ int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl) int ret; ctrl->ctrl_config &= ~NVME_CC_SHN_MASK; - ctrl->ctrl_config |= NVME_CC_SHN_NORMAL; + + if (pm_power_loss_imminent()) + ctrl->ctrl_config |= NVME_CC_SHN_ABRUPT; + else + ctrl->ctrl_config |= NVME_CC_SHN_NORMAL; ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config); if (ret) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 320051f5a3dd..07be319f63d9 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> +#include <linux/suspend.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mutex.h> @@ -2524,13 +2525,14 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) * Give the controller a chance to complete all entered requests if * doing a safe shutdown. */ - if (!dead && shutdown && freeze) + if (!dead && shutdown && !pm_power_loss_imminent() && freeze) nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT); nvme_stop_queues(&dev->ctrl); if (!dead && dev->ctrl.queue_count > 0) { - nvme_disable_io_queues(dev); + if (!pm_power_loss_imminent()) + nvme_disable_io_queues(dev); nvme_disable_admin_queue(dev, shutdown); } nvme_suspend_io_queues(dev); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: shiva.linuxworks@gmail.com To: rjw@rjwysocki.net, pavel@ucw.cz, len.brown@intel.com, linux-pm@vger.kernel.org, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me, linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Shivamurthy Shastri <sshivamurthy@micron.com> Subject: [PATCH v2 2/2] nvme: Add abrupt shutdown support Date: Mon, 26 Jul 2021 13:22:23 +0000 [thread overview] Message-ID: <20210726132223.1661-3-sshivamurthy@micron.com> (raw) In-Reply-To: <20210726132223.1661-1-sshivamurthy@micron.com> From: Shivamurthy Shastri <sshivamurthy@micron.com> Enabling the abrupt shutdown support. In this shutdown type, the host does not need to send Delete I/O Submission Queue and Delete I/O Completion Queue commands to the device. Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com> --- drivers/nvme/host/core.c | 7 ++++++- drivers/nvme/host/pci.c | 6 ++++-- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 11779be42186..760ffb071c1b 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -20,6 +20,7 @@ #include <linux/ptrace.h> #include <linux/nvme_ioctl.h> #include <linux/pm_qos.h> +#include <linux/suspend.h> #include <asm/unaligned.h> #include "nvme.h" @@ -2159,7 +2160,11 @@ int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl) int ret; ctrl->ctrl_config &= ~NVME_CC_SHN_MASK; - ctrl->ctrl_config |= NVME_CC_SHN_NORMAL; + + if (pm_power_loss_imminent()) + ctrl->ctrl_config |= NVME_CC_SHN_ABRUPT; + else + ctrl->ctrl_config |= NVME_CC_SHN_NORMAL; ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config); if (ret) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 320051f5a3dd..07be319f63d9 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> +#include <linux/suspend.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mutex.h> @@ -2524,13 +2525,14 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) * Give the controller a chance to complete all entered requests if * doing a safe shutdown. */ - if (!dead && shutdown && freeze) + if (!dead && shutdown && !pm_power_loss_imminent() && freeze) nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT); nvme_stop_queues(&dev->ctrl); if (!dead && dev->ctrl.queue_count > 0) { - nvme_disable_io_queues(dev); + if (!pm_power_loss_imminent()) + nvme_disable_io_queues(dev); nvme_disable_admin_queue(dev, shutdown); } nvme_suspend_io_queues(dev); -- 2.25.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-07-26 13:23 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-26 13:22 [PATCH v2 0/2] Abrupt Shutdown for NVMe SSD shiva.linuxworks 2021-07-26 13:22 ` shiva.linuxworks 2021-07-26 13:22 ` [PATCH v2 1/2] PM: enable support for imminent power loss shiva.linuxworks 2021-07-26 13:22 ` shiva.linuxworks 2021-07-26 19:41 ` Pavel Machek 2021-07-26 19:41 ` Pavel Machek 2021-07-26 20:16 ` Keith Busch 2021-07-26 20:16 ` Keith Busch 2021-07-26 13:22 ` shiva.linuxworks [this message] 2021-07-26 13:22 ` [PATCH v2 2/2] nvme: Add abrupt shutdown support shiva.linuxworks 2021-07-26 16:07 ` kernel test robot 2021-07-26 16:07 ` kernel test robot 2021-07-26 16:07 ` kernel test robot 2021-07-26 16:43 ` kernel test robot 2021-07-26 16:43 ` kernel test robot 2021-07-26 16:43 ` kernel test robot 2021-07-26 15:24 ` [PATCH v2 0/2] Abrupt Shutdown for NVMe SSD Keith Busch 2021-07-26 15:24 ` Keith Busch 2021-07-29 10:37 ` [EXT] " Shivamurthy Shastri (sshivamurthy) 2021-07-29 10:37 ` Shivamurthy Shastri (sshivamurthy)
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210726132223.1661-3-sshivamurthy@micron.com \ --to=shiva.linuxworks@gmail.com \ --cc=axboe@fb.com \ --cc=hch@lst.de \ --cc=kbusch@kernel.org \ --cc=len.brown@intel.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-nvme@lists.infradead.org \ --cc=linux-pm@vger.kernel.org \ --cc=pavel@ucw.cz \ --cc=rjw@rjwysocki.net \ --cc=sagi@grimberg.me \ --cc=sshivamurthy@micron.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.