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Thu, 20 Feb 2025 10:56:24 -0800 (PST) Received: from sxavier-dev.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-addee79a984sm9572262a12.32.2025.02.20.10.56.20 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Feb 2025 10:56:23 -0800 (PST) From: Selvin Xavier To: leon@kernel.org, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com, kalesh-anakkur.purayil@broadcom.com, netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, abeni@redhat.com, horms@kernel.org, michael.chan@broadcom.com, Selvin Xavier Subject: [PATCH rdma-next 9/9] RDMA/bnxt_re: Add support for changing the snap dump level Date: Thu, 20 Feb 2025 10:34:56 -0800 Message-Id: <1740076496-14227-10-git-send-email-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> References: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Add support for changing the default debug dump level. Reviewed-by: Saravanan Vajravel Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/bnxt_re.h | 2 ++ drivers/infiniband/hw/bnxt_re/debugfs.c | 49 +++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h index 45601635..45d62f6 100644 --- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h +++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h @@ -304,6 +304,8 @@ struct bnxt_re_dev { struct workqueue_struct *dcb_wq; /* Head to track all QP dump */ struct bnxt_re_qdump_head qdump_head; + struct dentry *tunables; + struct dentry *snapdump_dbg; u8 snapdump_dbg_lvl; struct dentry *cc_config; struct bnxt_re_dbg_cc_config_params *cc_config_params; diff --git a/drivers/infiniband/hw/bnxt_re/debugfs.c b/drivers/infiniband/hw/bnxt_re/debugfs.c index af91d16..e3fba53 100644 --- a/drivers/infiniband/hw/bnxt_re/debugfs.c +++ b/drivers/infiniband/hw/bnxt_re/debugfs.c @@ -306,6 +306,52 @@ static const struct file_operations bnxt_re_cc_config_ops = { .write = bnxt_re_cc_config_set, }; +static ssize_t bnxt_re_snapdump_dbg_lvl_set(struct file *filp, const char __user *buffer, + size_t count, loff_t *ppos) +{ + struct bnxt_re_dev *rdev = filp->private_data; + char buf[16]; + u32 val; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, buffer, count)) + return -EFAULT; + + buf[count] = '\0'; + if (kstrtou32(buf, 0, &val)) + return -EINVAL; + + if (val > BNXT_RE_SNAPDUMP_ALL) + return -EINVAL; + + rdev->snapdump_dbg_lvl = val; + + return count; +} + +static ssize_t bnxt_re_snapdump_dbg_lvl_get(struct file *filp, char __user *buffer, + size_t usr_buf_len, loff_t *ppos) +{ + struct bnxt_re_dev *rdev = filp->private_data; + char buf[16]; + int rc; + + rc = snprintf(buf, sizeof(buf), "%d\n", rdev->snapdump_dbg_lvl); + if (rc < 0) + return rc; + + return simple_read_from_buffer(buffer, usr_buf_len, ppos, (u8 *)(buf), rc); +} + +static const struct file_operations bnxt_re_snapdump_dbg_lvl = { + .owner = THIS_MODULE, + .open = simple_open, + .read = bnxt_re_snapdump_dbg_lvl_get, + .write = bnxt_re_snapdump_dbg_lvl_set, +}; + void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) { struct pci_dev *pdev = rdev->en_dev->pdev; @@ -329,6 +375,9 @@ void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) rdev->cc_config, tmp_params, &bnxt_re_cc_config_ops); } + rdev->tunables = debugfs_create_dir("tunables", rdev->dbg_root); + rdev->snapdump_dbg = debugfs_create_file("snapdump_dbg_lvl", 0400, rdev->tunables, rdev, + &bnxt_re_snapdump_dbg_lvl); } void bnxt_re_debugfs_rem_pdev(struct bnxt_re_dev *rdev)