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Commit 2df4f757 authored by Ram Vepa's avatar Ram Vepa Committed by Roland Dreier
Browse files

IB/qib: Add sysfs interface to read free contexts 



Indicate the number of free user contexts via the sysfs file
/sys/class/infiniband/qib0/nfreectxts as required for PSM.

Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent ac0cae44

drivers/infiniband/hw/qib/qib_sysfs.c

+14 −0
Original line number Original line Diff line number Diff line
@@ -507,6 +507,18 @@ static ssize_t show_nctxts(struct device *device, 
		dd->first_user_ctxt);

		dd->first_user_ctxt);

}

}





static ssize_t show_nfreectxts(struct device *device,

			   struct device_attribute *attr, char *buf)

{

	struct qib_ibdev *dev =

		container_of(device, struct qib_ibdev, ibdev.dev);

	struct qib_devdata *dd = dd_from_dev(dev);



	/* Return the number of free user ports (contexts) available. */

	return scnprintf(buf, PAGE_SIZE, "%u\n", dd->cfgctxts -

		dd->first_user_ctxt - (u32)qib_stats.sps_ctxts);

}



static ssize_t show_serial(struct device *device,

static ssize_t show_serial(struct device *device,

			   struct device_attribute *attr, char *buf)

			   struct device_attribute *attr, char *buf)

{

{
@@ -604,6 +616,7 @@ static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 
static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL);

static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL);

static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);

static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);

static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);

static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);

static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL);

static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);

static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);

static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);

static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);

static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);

static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
@@ -617,6 +630,7 @@ static struct device_attribute *qib_attributes[] = { 
	&dev_attr_board_id,

	&dev_attr_board_id,

	&dev_attr_version,

	&dev_attr_version,

	&dev_attr_nctxts,

	&dev_attr_nctxts,

	&dev_attr_nfreectxts,

	&dev_attr_serial,

	&dev_attr_serial,

	&dev_attr_boardversion,

	&dev_attr_boardversion,

	&dev_attr_logged_errors,

	&dev_attr_logged_errors,