From 38d8879baeb61b6946052739e7c03fa79b3a57f0 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 23 Jun 2011 14:33:48 -0700 Subject: [PATCH] isci: combine request flags Combine three bools into one unsigned long 'flags'. Doesn't increase the request size due to packing. (to do: optimize the structure layout). Signed-off-by: Dan Williams --- drivers/scsi/isci/request.c | 48 ++++++++++++++++++++------------------------- drivers/scsi/isci/request.h | 12 ++++-------- drivers/scsi/isci/task.c | 23 +++++++++++----------- 3 files changed, 36 insertions(+), 47 deletions(-) diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 55859d5..27376ba 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2183,7 +2183,7 @@ static void isci_request_set_open_reject_status( enum sas_open_rej_reason open_rej_reason) { /* Task in the target is done. */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *response_ptr = SAS_TASK_UNDELIVERED; *status_ptr = SAS_OPEN_REJECT; *complete_to_host_ptr = isci_perform_normal_io_completion; @@ -2248,7 +2248,7 @@ static void isci_request_handle_controller_specific_errors( else *status_ptr = SAS_ABORTED_TASK; - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *complete_to_host_ptr = isci_perform_normal_io_completion; @@ -2261,7 +2261,7 @@ static void isci_request_handle_controller_specific_errors( else *status_ptr = SAM_STAT_TASK_ABORTED; - request->complete_in_target = false; + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *complete_to_host_ptr = isci_perform_error_io_completion; @@ -2292,7 +2292,7 @@ static void isci_request_handle_controller_specific_errors( else *status_ptr = SAS_ABORTED_TASK; - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *complete_to_host_ptr = isci_perform_normal_io_completion; break; @@ -2397,11 +2397,11 @@ static void isci_request_handle_controller_specific_errors( *status_ptr = SAM_STAT_TASK_ABORTED; if (task->task_proto == SAS_PROTOCOL_SMP) { - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *complete_to_host_ptr = isci_perform_normal_io_completion; } else { - request->complete_in_target = false; + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *complete_to_host_ptr = isci_perform_error_io_completion; } @@ -2552,7 +2552,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, * * The target is still there (since the TMF was successful). */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = SAS_TASK_COMPLETE; /* See if the device has been/is being stopped. Note @@ -2579,7 +2579,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, * Aborting also means an external thread is explicitly managing * this request, so that we do not complete it up the stack. */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = SAS_TASK_UNDELIVERED; if (!idev) @@ -2605,7 +2605,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, * the device (reset, tear down, etc.), and the I/O needs * to be completed up the stack. */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = SAS_TASK_UNDELIVERED; /* See if the device has been/is being stopped. Note @@ -2675,7 +2675,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, /* use the task status set in the task struct by the * isci_request_process_response_iu call. */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = task->task_status.resp; status = task->task_status.stat; break; @@ -2685,7 +2685,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, response = SAS_TASK_COMPLETE; status = SAM_STAT_GOOD; - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); if (task->task_proto == SAS_PROTOCOL_SMP) { void *rsp = &request->sci.smp.rsp; @@ -2737,7 +2737,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, /* The request was terminated explicitly. No handling * is needed in the SCSI error handler path. */ - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = SAS_TASK_UNDELIVERED; /* See if the device has been/is being stopped. Note @@ -2777,7 +2777,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, status = SAM_STAT_TASK_ABORTED; complete_to_host = isci_perform_error_io_completion; - request->complete_in_target = false; + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); break; case SCI_FAILURE_RETRY_REQUIRED: @@ -2790,7 +2790,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, status = SAS_ABORTED_TASK; complete_to_host = isci_perform_normal_io_completion; - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); break; @@ -2813,10 +2813,10 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, status = SAS_ABORTED_TASK; if (SAS_PROTOCOL_SMP == task->task_proto) { - request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); complete_to_host = isci_perform_normal_io_completion; } else { - request->complete_in_target = false; + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); complete_to_host = isci_perform_error_io_completion; } break; @@ -2870,7 +2870,7 @@ static void isci_request_io_request_complete(struct isci_host *isci_host, * terminated again, and to cause any calls into abort * task to recognize the already completed case. */ - request->terminated = true; + set_bit(IREQ_TERMINATED, &request->flags); } static void scic_sds_request_started_state_enter(struct sci_base_state_machine *sm) @@ -2919,7 +2919,7 @@ static void scic_sds_request_completed_state_enter(struct sci_base_state_machine struct isci_request *ireq = sci_req_to_ireq(sci_req); /* Tell the SCI_USER that the IO request is complete */ - if (sci_req->is_task_management_request == false) + if (!test_bit(IREQ_TMF, &ireq->flags)) isci_request_io_request_complete(ihost, ireq, sci_req->sci_status); else @@ -3032,8 +3032,6 @@ scic_sds_general_request_construct(struct scic_sds_controller *scic, sci_req->scu_status = 0; sci_req->post_context = 0xFFFFFFFF; sci_req->tc = &scic->task_context_table[ISCI_TAG_TCI(io_tag)]; - - sci_req->is_task_management_request = false; WARN_ONCE(io_tag == SCI_CONTROLLER_INVALID_IO_TAG, "straggling invalid tag usage\n"); } @@ -3077,7 +3075,7 @@ enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { - sci_req->is_task_management_request = true; + set_bit(IREQ_TMF, &sci_req_to_ireq(sci_req)->flags); memset(sci_req->tc, 0, sizeof(struct scu_task_context)); } else status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; @@ -3379,12 +3377,8 @@ static struct isci_request *isci_request_alloc_core(struct isci_host *ihost, ireq->request_daddr = handle; ireq->isci_host = ihost; ireq->io_request_completion = NULL; - ireq->terminated = false; - + ireq->flags = 0; ireq->num_sg_entries = 0; - - ireq->complete_in_target = false; - INIT_LIST_HEAD(&ireq->completed_node); INIT_LIST_HEAD(&ireq->dev_node); @@ -3496,7 +3490,7 @@ int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *ide * hardware, so clear the request handle * here so no terminations will be done. */ - ireq->terminated = true; + set_bit(IREQ_TERMINATED, &ireq->flags); isci_request_change_state(ireq, completed); } spin_unlock_irqrestore(&ihost->scic_lock, flags); diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 8c77c4c..f440e42 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -210,12 +210,6 @@ struct scic_sds_request { struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32))); /* - * This field indicates if this request is a task management request or - * normal IO request. - */ - bool is_task_management_request; - - /* * This field is a pointer to the stored rx frame data. It is used in * STP internal requests and SMP response frames. If this field is * non-NULL the saved frame must be released on IO request completion. @@ -260,8 +254,10 @@ struct isci_request { enum isci_request_status status; enum task_type ttype; unsigned short io_tag; - bool complete_in_target; - bool terminated; + #define IREQ_COMPLETE_IN_TARGET 0 + #define IREQ_TERMINATED 1 + #define IREQ_TMF 2 + unsigned long flags; union ttype_ptr_union { struct sas_task *io_task_ptr; /* When ttype==io_task */ diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 22f6fe1..d1a4671 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -558,15 +558,15 @@ static void isci_terminate_request_core( : NULL; /* Note that we are not going to control - * the target to abort the request. - */ - isci_request->complete_in_target = true; + * the target to abort the request. + */ + set_bit(IREQ_COMPLETE_IN_TARGET, &isci_request->flags); /* Make sure the request wasn't just sitting around signalling * device condition (if the request handle is NULL, then the * request completed but needed additional handling here). */ - if (!isci_request->terminated) { + if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { was_terminated = true; needs_cleanup_handling = true; status = scic_controller_terminate_request( @@ -609,7 +609,7 @@ static void isci_terminate_request_core( flags); /* Check for state changes. */ - if (!isci_request->terminated) { + if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { /* The best we can do is to have the * request die a silent death if it @@ -1098,9 +1098,8 @@ int isci_task_abort_task(struct sas_task *task) ret = TMF_RESP_FUNC_COMPLETE; goto out; } - if ((task->task_proto == SAS_PROTOCOL_SMP) - || old_request->complete_in_target - ) { + if (task->task_proto == SAS_PROTOCOL_SMP || + test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { spin_unlock_irqrestore(&isci_host->scic_lock, flags); @@ -1108,7 +1107,7 @@ int isci_task_abort_task(struct sas_task *task) "%s: SMP request (%d)" " or complete_in_target (%d), thus no TMF\n", __func__, (task->task_proto == SAS_PROTOCOL_SMP), - old_request->complete_in_target); + test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)); /* Set the state on the task. */ isci_task_all_done(task); @@ -1136,7 +1135,7 @@ int isci_task_abort_task(struct sas_task *task) __func__); } if (ret == TMF_RESP_FUNC_COMPLETE) { - old_request->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags); /* Clean up the request on our side, and wait for the aborted * I/O to complete. @@ -1252,7 +1251,7 @@ isci_task_request_complete(struct isci_host *ihost, isci_request_change_state(ireq, completed); tmf->status = completion_status; - ireq->complete_in_target = true; + set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags); if (tmf->proto == SAS_PROTOCOL_SSP) { memcpy(&tmf->resp.resp_iu, @@ -1271,7 +1270,7 @@ isci_task_request_complete(struct isci_host *ihost, /* set the 'terminated' flag handle to make sure it cannot be terminated * or completed again. */ - ireq->terminated = true;; + set_bit(IREQ_TERMINATED, &ireq->flags); isci_request_change_state(ireq, unallocated); list_del_init(&ireq->dev_node); -- 2.7.4