Commit f4ddedf4 authored by Ira Weiny's avatar Ira Weiny Committed by Doug Ledford
Browse files

staging/hfi1: Fix Xmit Wait calculation 



Total XMIT wait needs to sum the xmit wait values of all the VLs not just
those requested in the query.  Also, make the algorithm used for both
PortStatus and PortDataCounters the same.

Reviewed-by: default avatarArthur Kepner <arthur.kepner@intel.com>
Reviewed-by: default avatarBreyer, Scott J <scott.j.breyer@intel.com>
Signed-off-by: default avatarIra Weiny <iweiny@gmail.com>
Signed-off-by: default avatarJubin John <jubin.john@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 624be1db

drivers/staging/rdma/hfi1/mad.c

+20 −13
Original line number Diff line number Diff line
@@ -2279,17 +2279,23 @@ static void a0_portstatus(struct hfi1_pportdata *ppd, 
{

	if (!is_bx(ppd->dd)) {

		unsigned long vl;

		u64 max_vl_xmit_wait = 0, tmp;

		u64 sum_vl_xmit_wait = 0;

		u32 vl_all_mask = VL_MASK_ALL;



		for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),

				 8 * sizeof(vl_all_mask)) {

			tmp = read_port_cntr(ppd, C_TX_WAIT_VL,

			u64 tmp = sum_vl_xmit_wait +

				  read_port_cntr(ppd, C_TX_WAIT_VL,

						 idx_from_vl(vl));

			if (tmp > max_vl_xmit_wait)

				max_vl_xmit_wait = tmp;

			if (tmp < sum_vl_xmit_wait) {

				/* we wrapped */

				sum_vl_xmit_wait = (u64)~0;

				break;

			}

		rsp->port_xmit_wait = cpu_to_be64(max_vl_xmit_wait);

			sum_vl_xmit_wait = tmp;

		}

		if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait)

			rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait);

	}

}
@@ -2491,18 +2497,19 @@ static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port, 
	return error_counter_summary;

}



static void a0_datacounters(struct hfi1_devdata *dd, struct _port_dctrs *rsp,

static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp,

			    u32 vl_select_mask)

{

	if (!is_bx(dd)) {

	if (!is_bx(ppd->dd)) {

		unsigned long vl;

		int vfi = 0;

		u64 sum_vl_xmit_wait = 0;

		u32 vl_all_mask = VL_MASK_ALL;



		for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),

				8 * sizeof(vl_select_mask)) {

		for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),

				 8 * sizeof(vl_all_mask)) {

			u64 tmp = sum_vl_xmit_wait +

				be64_to_cpu(rsp->vls[vfi++].port_vl_xmit_wait);

				  read_port_cntr(ppd, C_TX_WAIT_VL,

						 idx_from_vl(vl));

			if (tmp < sum_vl_xmit_wait) {

				/* we wrapped */

				sum_vl_xmit_wait = (u64) ~0;
@@ -2665,7 +2672,7 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp, 
		vfi++;

	}



	a0_datacounters(dd, rsp, vl_select_mask);

	a0_datacounters(ppd, rsp, vl_select_mask);



	if (resp_len)

		*resp_len += response_data_size;

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