xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Tükrözés 0
Kód Hibajegyek Egyesítési kérések Actions Packages Projektek Kiadások Wiki Tevékenység

scsi: lpfc: Break up IO ctx list into a separate get and put list

Forráskód böngészése 
Since unsol rcv ISR and command cmpl ISR both access/lock this list,
separate get/put lists will reduce contention.

Replaced
struct list_head lpfc_nvmet_ctx_list;
with
struct list_head lpfc_nvmet_ctx_get_list;
struct list_head lpfc_nvmet_ctx_put_list;
and all correpsonding locks and counters.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2017-06-15 22:56:45 -07:00
committed by Martin K. Petersen
szülő 810ffa4789
commit 966bb5b711
5 fájl változott, egészen pontosan 89 új sor hozzáadva és 40 régi sor törölve
Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/scsi/lpfc/lpfc_nvmet.c
Fájl megtekintése

@@ -267,11 +267,11 @@ lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
}
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
spin_lock_irqsave(&phba->sli4_hba.nvmet_io_lock, iflag);
spin_lock_irqsave(&phba->sli4_hba.nvmet_ctx_put_lock, iflag);
list_add_tail(&ctx_buf->list,
&phba->sli4_hba.lpfc_nvmet_ctx_list);
phba->sli4_hba.nvmet_ctx_cnt++;
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_lock, iflag);
&phba->sli4_hba.lpfc_nvmet_ctx_put_list);
phba->sli4_hba.nvmet_ctx_put_cnt++;
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_ctx_put_lock, iflag);
#endif
}
@@ -865,28 +865,46 @@ lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba)
struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf;
unsigned long flags;
list_for_each_entry_safe(
ctx_buf, next_ctx_buf,
&phba->sli4_hba.lpfc_nvmet_ctx_list, list) {
spin_lock_irqsave(
&phba->sli4_hba.abts_nvme_buf_list_lock, flags);
spin_lock_irqsave(&phba->sli4_hba.nvmet_ctx_get_lock, flags);
spin_lock_irq(&phba->sli4_hba.nvmet_ctx_put_lock);
list_for_each_entry_safe(ctx_buf, next_ctx_buf,
&phba->sli4_hba.lpfc_nvmet_ctx_get_list, list) {
spin_lock_irq(&phba->sli4_hba.abts_nvme_buf_list_lock);
list_del_init(&ctx_buf->list);
spin_unlock_irqrestore(
&phba->sli4_hba.abts_nvme_buf_list_lock, flags);
spin_unlock_irq(&phba->sli4_hba.abts_nvme_buf_list_lock);
__lpfc_clear_active_sglq(phba,
ctx_buf->sglq->sli4_lxritag);
ctx_buf->sglq->state = SGL_FREED;
ctx_buf->sglq->ndlp = NULL;
spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, flags);
spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
list_add_tail(&ctx_buf->sglq->list,
&phba->sli4_hba.lpfc_nvmet_sgl_list);
spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
flags);
spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
kfree(ctx_buf->context);
}
list_for_each_entry_safe(ctx_buf, next_ctx_buf,
&phba->sli4_hba.lpfc_nvmet_ctx_put_list, list) {
spin_lock_irq(&phba->sli4_hba.abts_nvme_buf_list_lock);
list_del_init(&ctx_buf->list);
spin_unlock_irq(&phba->sli4_hba.abts_nvme_buf_list_lock);
__lpfc_clear_active_sglq(phba,
ctx_buf->sglq->sli4_lxritag);
ctx_buf->sglq->state = SGL_FREED;
ctx_buf->sglq->ndlp = NULL;
spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
list_add_tail(&ctx_buf->sglq->list,
&phba->sli4_hba.lpfc_nvmet_sgl_list);
spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
kfree(ctx_buf->context);
}
spin_unlock_irq(&phba->sli4_hba.nvmet_ctx_put_lock);
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_ctx_get_lock, flags);
}
static int
@@ -958,12 +976,12 @@ lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
"6407 Ran out of NVMET XRIs\n");
return -ENOMEM;
}
spin_lock(&phba->sli4_hba.nvmet_io_lock);
spin_lock(&phba->sli4_hba.nvmet_ctx_get_lock);
list_add_tail(&ctx_buf->list,
&phba->sli4_hba.lpfc_nvmet_ctx_list);
spin_unlock(&phba->sli4_hba.nvmet_io_lock);
&phba->sli4_hba.lpfc_nvmet_ctx_get_list);
spin_unlock(&phba->sli4_hba.nvmet_ctx_get_lock);
}
phba->sli4_hba.nvmet_ctx_cnt = phba->sli4_hba.nvmet_xri_cnt;
phba->sli4_hba.nvmet_ctx_get_cnt = phba->sli4_hba.nvmet_xri_cnt;
return 0;
}
@@ -1370,13 +1388,31 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
goto dropit;
}
spin_lock_irqsave(&phba->sli4_hba.nvmet_io_lock, iflag);
if (phba->sli4_hba.nvmet_ctx_cnt) {
list_remove_head(&phba->sli4_hba.lpfc_nvmet_ctx_list,
spin_lock_irqsave(&phba->sli4_hba.nvmet_ctx_get_lock, iflag);
if (phba->sli4_hba.nvmet_ctx_get_cnt) {
list_remove_head(&phba->sli4_hba.lpfc_nvmet_ctx_get_list,
ctx_buf, struct lpfc_nvmet_ctxbuf, list);
phba->sli4_hba.nvmet_ctx_cnt--;
phba->sli4_hba.nvmet_ctx_get_cnt--;
} else {
spin_lock(&phba->sli4_hba.nvmet_ctx_put_lock);
if (phba->sli4_hba.nvmet_ctx_put_cnt) {
list_splice(&phba->sli4_hba.lpfc_nvmet_ctx_put_list,
&phba->sli4_hba.lpfc_nvmet_ctx_get_list);
INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_ctx_put_list);
phba->sli4_hba.nvmet_ctx_get_cnt =
phba->sli4_hba.nvmet_ctx_put_cnt;
phba->sli4_hba.nvmet_ctx_put_cnt = 0;
spin_unlock(&phba->sli4_hba.nvmet_ctx_put_lock);
list_remove_head(
&phba->sli4_hba.lpfc_nvmet_ctx_get_list,
ctx_buf, struct lpfc_nvmet_ctxbuf, list);
phba->sli4_hba.nvmet_ctx_get_cnt--;
} else {
spin_unlock(&phba->sli4_hba.nvmet_ctx_put_lock);
}
}
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_lock, iflag);
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_ctx_get_lock, iflag);
fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
oxid = be16_to_cpu(fc_hdr->fh_ox_id);