Merge "scsi: ufs: add PM QoS debug info" (06353fcb) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/scsi/ufs/ufs-qcom-debugfs.c

+44 −0

Original line number	Diff line number	Diff line
		@@ -219,6 +219,39 @@ static const struct file_operations ufs_qcom_dbg_dbg_regs_desc = {
		.read = seq_read,
		};

		static int ufs_qcom_dbg_pm_qos_show(struct seq_file file, void data)
		{
		struct ufs_qcom_host host = (struct ufs_qcom_host )file->private;
		unsigned long flags;
		int i;

		spin_lock_irqsave(host->hba->host->host_lock, flags);

		seq_printf(file, "enabled: %d\n", host->pm_qos.is_enabled);
		for (i = 0; i < host->pm_qos.num_groups && host->pm_qos.groups; i++)
		seq_printf(file,
		"CPU Group #%d(mask=0x%lx): active_reqs=%d, state=%d, latency=%d\n",
		i, host->pm_qos.groups[i].mask.bits[0],
		host->pm_qos.groups[i].active_reqs,
		host->pm_qos.groups[i].state,
		host->pm_qos.groups[i].latency_us);

		spin_unlock_irqrestore(host->hba->host->host_lock, flags);

		return 0;
		}

		static int ufs_qcom_dbg_pm_qos_open(struct inode *inode,
		struct file *file)
		{
		return single_open(file, ufs_qcom_dbg_pm_qos_show, inode->i_private);
		}

		static const struct file_operations ufs_qcom_dbg_pm_qos_desc = {
		.open = ufs_qcom_dbg_pm_qos_open,
		.read = seq_read,
		};

		void ufs_qcom_dbg_add_debugfs(struct ufs_hba hba, struct dentry root)
		{
		struct ufs_qcom_host *host;
		@@ -307,6 +340,17 @@ void ufs_qcom_dbg_add_debugfs(struct ufs_hba hba, struct dentry root)
		goto err;
		}

		host->debugfs_files.pm_qos =
		debugfs_create_file("pm_qos", S_IRUSR,
		host->debugfs_files.debugfs_root, host,
		&ufs_qcom_dbg_pm_qos_desc);
		if (!host->debugfs_files.dbg_regs) {
		dev_err(host->hba->dev,
		"%s: failed create dbg_regs debugfs entry\n",
		__func__);
		goto err;
		}

		return;

		err:

drivers/scsi/ufs/ufs-qcom.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -227,6 +227,7 @@ struct qcom_debugfs_files {
		struct dentry *testbus_cfg;
		struct dentry *testbus_bus;
		struct dentry *dbg_regs;
		struct dentry *pm_qos;
		};
		#endif