diff options
| -rw-r--r-- | arch/x86/mm/pat.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 60adbe22efa0..1a82f4db8a46 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -42,6 +42,19 @@ static int nopat(char *str) early_param("nopat", nopat); #endif + +static int debug_enable; +static int __init pat_debug_setup(char *str) +{ + debug_enable = 1; + return 0; +} +__setup("debugpat", pat_debug_setup); + +#define dprintk(fmt, arg...) \ + do { if (debug_enable) printk(KERN_INFO fmt, ##arg); } while (0) + + static u64 __read_mostly boot_pat_state; enum { @@ -279,7 +292,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, struct memtype *saved_ptr; if (parse->start >= end) { - pr_debug("New Entry\n"); + dprintk("New Entry\n"); list_add(&new_entry->nd, parse->nd.prev); new_entry = NULL; break; @@ -329,7 +342,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, break; } - pr_debug("Overlap at 0x%Lx-0x%Lx\n", + dprintk("Overlap at 0x%Lx-0x%Lx\n", saved_ptr->start, saved_ptr->end); /* No conflict. Go ahead and add this new entry */ list_add(&new_entry->nd, saved_ptr->nd.prev); @@ -381,7 +394,7 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, break; } - pr_debug(KERN_INFO "Overlap at 0x%Lx-0x%Lx\n", + dprintk("Overlap at 0x%Lx-0x%Lx\n", saved_ptr->start, saved_ptr->end); /* No conflict. Go ahead and add this new entry */ list_add(&new_entry->nd, &saved_ptr->nd); @@ -403,16 +416,16 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, if (new_entry) { /* No conflict. Not yet added to the list. Add to the tail */ list_add_tail(&new_entry->nd, &memtype_list); - pr_debug("New Entry\n"); + dprintk("New Entry\n"); } if (ret_type) { - pr_debug( + dprintk( "reserve_memtype added 0x%Lx-0x%Lx, track %s, req %s, ret %s\n", start, end, cattr_name(actual_type), cattr_name(req_type), cattr_name(*ret_type)); } else { - pr_debug( + dprintk( "reserve_memtype added 0x%Lx-0x%Lx, track %s, req %s\n", start, end, cattr_name(actual_type), cattr_name(req_type)); @@ -453,7 +466,7 @@ int free_memtype(u64 start, u64 end) current->comm, current->pid, start, end); } - pr_debug("free_memtype request 0x%Lx-0x%Lx\n", start, end); + dprintk("free_memtype request 0x%Lx-0x%Lx\n", start, end); return err; } |