[SCSI] fnic: Fnic Trace Utility

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / scsi / fnic / fnic_main.c

diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c
index fcecbb7..d601ac5 100644 (file)
--- a/drivers/scsi/fnic/fnic_main.c
+++ b/drivers/scsi/fnic/fnic_main.c
@@ -68,6 +68,10 @@ unsigned int fnic_log_level;
 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
 
+unsigned int fnic_trace_max_pages = 16;
+module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
+                                       "for fnic trace buffer");
 
 static struct libfc_function_template fnic_transport_template = {
        .frame_send = fnic_send,
@@ -861,6 +865,14 @@ static int __init fnic_init_module(void)
 
        printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
 
+       /* Allocate memory for trace buffer */
+       err = fnic_trace_buf_init();
+       if (err < 0) {
+               printk(KERN_ERR PFX "Trace buffer initialization Failed "
+                                 "Fnic Tracing utility is disabled\n");
+               fnic_trace_free();
+       }
+
        /* Create a cache for allocation of default size sgls */
        len = sizeof(struct fnic_dflt_sgl_list);
        fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
@@ -931,6 +943,7 @@ err_create_fnic_ioreq_slab:
 err_create_fnic_sgl_slab_max:
        kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 err_create_fnic_sgl_slab_dflt:
+       fnic_trace_free();
        return err;
 }
 
@@ -942,6 +955,7 @@ static void __exit fnic_cleanup_module(void)
        kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
        kmem_cache_destroy(fnic_io_req_cache);
        fc_release_transport(fnic_fc_transport);
+       fnic_trace_free();
 }
 
 module_init(fnic_init_module);