AuxXxilium/linux_dsm_epyc7002
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qed: verify RoCE resource bitmaps are released

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Add mechanism to verify RoCE resources are released prior to freeing the
bitmaps. If this is not the case, print what resources were not released.

Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ram Amrani 2017-04-30 11:49:08 +03:00 committed by David S. Miller
parent 105361943d
commit e015d58b44
2 changed files with 80 additions and 27 deletions
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105
drivers/net/ethernet/qlogic/qed/qed_roce.c
View File

@ -90,7 +90,7 @@ void qed_roce_async_event(struct qed_hwfn *p_hwfn,
}
static int qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
struct qed_bmap *bmap, u32 max_count)
struct qed_bmap *bmap, u32 max_count, char *name)
{
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "max_count = %08x\n", max_count);
@ -104,26 +104,24 @@ static int qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
return -ENOMEM;
}
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocated bitmap %p\n",
bmap->bitmap);
snprintf(bmap->name, QED_RDMA_MAX_BMAP_NAME, "%s", name);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "0\n");
return 0;
}
static int qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn,
struct qed_bmap *bmap, u32 *id_num)
{
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "bmap = %p\n", bmap);
*id_num = find_first_zero_bit(bmap->bitmap, bmap->max_count);
if (*id_num >= bmap->max_count) {
DP_NOTICE(p_hwfn, "no id available max_count=%d\n",
bmap->max_count);
if (*id_num >= bmap->max_count)
return -EINVAL;
}
__set_bit(*id_num, bmap->bitmap);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "%s bitmap: allocated id %d\n",
bmap->name, *id_num);
return 0;
}
@ -141,15 +139,18 @@ static void qed_bmap_release_id(struct qed_hwfn *p_hwfn,
{
bool b_acquired;
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "id_num = %08x", id_num);
if (id_num >= bmap->max_count)
return;
b_acquired = test_and_clear_bit(id_num, bmap->bitmap);
if (!b_acquired) {
DP_NOTICE(p_hwfn, "ID %d already released\n", id_num);
DP_NOTICE(p_hwfn, "%s bitmap: id %d already released\n",
bmap->name, id_num);
return;
}
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "%s bitmap: released id %d\n",
bmap->name, id_num);
}
static int qed_bmap_test_id(struct qed_hwfn *p_hwfn,
@ -224,7 +225,8 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
}
/* Allocate bit map for pd's */
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->pd_map, RDMA_MAX_PDS);
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->pd_map, RDMA_MAX_PDS,
"PD");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate pd_map, rc = %d\n",
@ -234,7 +236,7 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
/* Allocate DPI bitmap */
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->dpi_map,
p_hwfn->dpi_count);
p_hwfn->dpi_count, "DPI");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate DPI bitmap, rc = %d\n", rc);
@ -245,7 +247,7 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
* twice the number of QPs.
*/
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cq_map,
p_rdma_info->num_qps * 2);
p_rdma_info->num_qps * 2, "CQ");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate cq bitmap, rc = %d\n", rc);
@ -257,7 +259,7 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
* The maximum number of CQs is bounded to twice the number of QPs.
*/
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->toggle_bits,
p_rdma_info->num_qps * 2);
p_rdma_info->num_qps * 2, "Toggle");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate toogle bits, rc = %d\n", rc);
@ -266,7 +268,7 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
/* Allocate bitmap for itids */
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->tid_map,
p_rdma_info->num_mrs);
p_rdma_info->num_mrs, "MR");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate itids bitmaps, rc = %d\n", rc);
@ -274,7 +276,8 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
}
/* Allocate bitmap for cids used for qps. */
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cid_map, num_cons);
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cid_map, num_cons,
"CID");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate cid bitmap, rc = %d\n", rc);
@ -282,7 +285,8 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
}
/* Allocate bitmap for cids used for responders/requesters. */
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->real_cid_map, num_cons);
rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->real_cid_map, num_cons,
"REAL_CID");
if (rc) {
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"Failed to allocate real cid bitmap, rc = %d\n", rc);
@ -313,6 +317,54 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
return rc;
}
static void qed_rdma_bmap_free(struct qed_hwfn *p_hwfn,
struct qed_bmap *bmap, bool check)
{
int weight = bitmap_weight(bmap->bitmap, bmap->max_count);
int last_line = bmap->max_count / (64 * 8);
int last_item = last_line * 8 +
DIV_ROUND_UP(bmap->max_count % (64 * 8), 64);
u64 *pmap = (u64 *)bmap->bitmap;
int line, item, offset;
u8 str_last_line[200] = { 0 };
if (!weight || !check)
goto end;
DP_NOTICE(p_hwfn,
"%s bitmap not free - size=%d, weight=%d, 512 bits per line\n",
bmap->name, bmap->max_count, weight);
/* print aligned non-zero lines, if any */
for (item = 0, line = 0; line < last_line; line++, item += 8)
if (bitmap_weight((unsigned long *)&pmap[item], 64 * 8))
DP_NOTICE(p_hwfn,
"line 0x%04x: 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
line,
pmap[item],
pmap[item + 1],
pmap[item + 2],
pmap[item + 3],
pmap[item + 4],
pmap[item + 5],
pmap[item + 6], pmap[item + 7]);
/* print last unaligned non-zero line, if any */
if ((bmap->max_count % (64 * 8)) &&
(bitmap_weight((unsigned long *)&pmap[item],
bmap->max_count - item * 64))) {
offset = sprintf(str_last_line, "line 0x%04x: ", line);
for (; item < last_item; item++)
offset += sprintf(str_last_line + offset,
"0x%016llx ", pmap[item]);
DP_NOTICE(p_hwfn, "%s\n", str_last_line);
}
end:
kfree(bmap->bitmap);
bmap->bitmap = NULL;
}
static void qed_rdma_resc_free(struct qed_hwfn *p_hwfn)
{
struct qed_bmap *rcid_map = &p_hwfn->p_rdma_info->real_cid_map;
@ -332,12 +384,12 @@ static void qed_rdma_resc_free(struct qed_hwfn *p_hwfn)
}
}
kfree(p_rdma_info->cid_map.bitmap);
kfree(p_rdma_info->tid_map.bitmap);
kfree(p_rdma_info->toggle_bits.bitmap);
kfree(p_rdma_info->cq_map.bitmap);
kfree(p_rdma_info->dpi_map.bitmap);
kfree(p_rdma_info->pd_map.bitmap);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->cid_map, 1);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->pd_map, 1);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->dpi_map, 1);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->cq_map, 1);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->toggle_bits, 0);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tid_map, 1);
kfree(p_rdma_info->port);
kfree(p_rdma_info->dev);
@ -954,8 +1006,7 @@ static int qed_rdma_create_cq(void *rdma_cxt,
/* Allocate icid */
spin_lock_bh(&p_info->lock);
rc = qed_rdma_bmap_alloc_id(p_hwfn,
&p_info->cq_map, &returned_id);
rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_info->cq_map, &returned_id);
spin_unlock_bh(&p_info->lock);
if (rc) {

2
drivers/net/ethernet/qlogic/qed/qed_roce.h
View File

@ -67,9 +67,11 @@ enum qed_rdma_toggle_bit {
QED_RDMA_TOGGLE_BIT_SET = 1
};
#define QED_RDMA_MAX_BMAP_NAME (10)
struct qed_bmap {
unsigned long *bitmap;
u32 max_count;
char name[QED_RDMA_MAX_BMAP_NAME];
};
struct qed_rdma_info {