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lpfc: Add lockdep assertions 

Several functions in lpfc have comments stating that the function must
be called with the hbalock (or hostlock, or ringlock) held. Add
lockdep_assert_held() annotations to these functions, so one can
actually verify the locks are held.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Johannes Thumshirn 2016-01-20 16:22:22 +01:00 committed by Martin K. Petersen
parent d04a78f43a
commit 1c2ba475eb
2 changed files with 48 additions and 0 deletions
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5
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -25,6 +25,7 @@
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/lockdep.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
@ -1314,6 +1315,8 @@ __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
{
struct lpfc_fcf_pri *fcf_pri;
lockdep_assert_held(&phba->hbalock);
fcf_pri = &phba->fcf.fcf_pri[fcf_index];
fcf_pri->fcf_rec.fcf_index = fcf_index;
/* FCF record priority */
@ -1398,6 +1401,8 @@ __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
struct fcf_record *new_fcf_record, uint32_t addr_mode,
uint16_t vlan_id, uint32_t flag)
{
lockdep_assert_held(&phba->hbalock);
/* Copy the fields from the HBA's FCF record */
lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
/* Update other fields of driver FCF record */

43
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -24,6 +24,7 @@
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/lockdep.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@ -576,6 +577,8 @@ __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
struct lpfc_iocbq * iocbq = NULL;
lockdep_assert_held(&phba->hbalock);
list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
if (iocbq)
phba->iocb_cnt++;
@ -797,6 +800,7 @@ int
lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
uint16_t xritag)
{
lockdep_assert_held(&phba->hbalock);
if (!ndlp)
return 0;
if (!ndlp->active_rrqs_xri_bitmap)
@ -914,6 +918,8 @@ __lpfc_sli_get_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
struct lpfc_nodelist *ndlp;
int found = 0;
lockdep_assert_held(&phba->hbalock);
if (piocbq->iocb_flag & LPFC_IO_FCP) {
lpfc_cmd = (struct lpfc_scsi_buf *) piocbq->context1;
ndlp = lpfc_cmd->rdata->pnode;
@ -1003,6 +1009,8 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
unsigned long iflag = 0;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
lockdep_assert_held(&phba->hbalock);
if (iocbq->sli4_xritag == NO_XRI)
sglq = NULL;
else
@ -1058,6 +1066,7 @@ __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
lockdep_assert_held(&phba->hbalock);
/*
* Clean all volatile data fields, preserve iotag and node struct.
@ -1080,6 +1089,8 @@ __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
static void
__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
lockdep_assert_held(&phba->hbalock);
phba->__lpfc_sli_release_iocbq(phba, iocbq);
phba->iocb_cnt--;
}
@ -1310,6 +1321,8 @@ static int
lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
lockdep_assert_held(&phba->hbalock);
list_add_tail(&piocb->list, &pring->txcmplq);
piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ;
@ -1344,6 +1357,8 @@ lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_iocbq *cmd_iocb;
lockdep_assert_held(&phba->hbalock);
list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
return cmd_iocb;
}
@ -1367,6 +1382,9 @@ lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
uint32_t max_cmd_idx = pring->sli.sli3.numCiocb;
lockdep_assert_held(&phba->hbalock);
if ((pring->sli.sli3.next_cmdidx == pring->sli.sli3.cmdidx) &&
(++pring->sli.sli3.next_cmdidx >= max_cmd_idx))
pring->sli.sli3.next_cmdidx = 0;
@ -1497,6 +1515,7 @@ static void
lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
{
lockdep_assert_held(&phba->hbalock);
/*
* Set up an iotag
*/
@ -1606,6 +1625,8 @@ lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
IOCB_t *iocb;
struct lpfc_iocbq *nextiocb;
lockdep_assert_held(&phba->hbalock);
/*
* Check to see if:
* (a) there is anything on the txq to send
@ -1647,6 +1668,8 @@ lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
{
struct hbq_s *hbqp = &phba->hbqs[hbqno];
lockdep_assert_held(&phba->hbalock);
if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
++hbqp->next_hbqPutIdx >= hbqp->entry_count)
hbqp->next_hbqPutIdx = 0;
@ -1747,6 +1770,7 @@ static int
lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
struct hbq_dmabuf *hbq_buf)
{
lockdep_assert_held(&phba->hbalock);
return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
}
@ -1768,6 +1792,7 @@ lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
struct lpfc_hbq_entry *hbqe;
dma_addr_t physaddr = hbq_buf->dbuf.phys;
lockdep_assert_held(&phba->hbalock);
/* Get next HBQ entry slot to use */
hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
if (hbqe) {
@ -1808,6 +1833,7 @@ lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
struct lpfc_rqe hrqe;
struct lpfc_rqe drqe;
lockdep_assert_held(&phba->hbalock);
hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
@ -1986,6 +2012,8 @@ lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
struct hbq_dmabuf *hbq_buf;
uint32_t hbqno;
lockdep_assert_held(&phba->hbalock);
hbqno = tag >> 16;
if (hbqno >= LPFC_MAX_HBQS)
return NULL;
@ -2647,6 +2675,7 @@ lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
{
struct lpfc_iocbq *cmd_iocb = NULL;
uint16_t iotag;
lockdep_assert_held(&phba->hbalock);
iotag = prspiocb->iocb.ulpIoTag;
@ -2685,6 +2714,7 @@ lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
{
struct lpfc_iocbq *cmd_iocb;
lockdep_assert_held(&phba->hbalock);
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
@ -3799,6 +3829,8 @@ void lpfc_reset_barrier(struct lpfc_hba *phba)
int i;
uint8_t hdrtype;
lockdep_assert_held(&phba->hbalock);
pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
if (hdrtype != 0x80 ||
(FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
@ -7861,6 +7893,7 @@ void
__lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
lockdep_assert_held(&phba->hbalock);
/* Insert the caller's iocb in the txq tail for later processing. */
list_add_tail(&piocb->list, &pring->txq);
}
@ -7888,6 +7921,8 @@ lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
{
struct lpfc_iocbq * nextiocb;
lockdep_assert_held(&phba->hbalock);
nextiocb = lpfc_sli_ringtx_get(phba, pring);
if (!nextiocb) {
nextiocb = *piocb;
@ -7927,6 +7962,8 @@ __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
IOCB_t *iocb;
struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
lockdep_assert_held(&phba->hbalock);
if (piocb->iocb_cmpl && (!piocb->vport) &&
(piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
(piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
@ -8642,6 +8679,8 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_queue *wq;
struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
lockdep_assert_held(&phba->hbalock);
if (piocb->sli4_xritag == NO_XRI) {
if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
@ -9752,6 +9791,8 @@ lpfc_sli_abort_iotag_issue(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
int retval;
unsigned long iflags;
lockdep_assert_held(&phba->hbalock);
/*
* There are certain command types we don't want to abort. And we
* don't want to abort commands that are already in the process of
@ -9854,6 +9895,8 @@ lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
int retval = IOCB_ERROR;
IOCB_t *icmd = NULL;
lockdep_assert_held(&phba->hbalock);
/*
* There are certain command types we don't want to abort. And we
* don't want to abort commands that are already in the process of