diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/iotrace.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/common/iotrace.c b/common/iotrace.c index 83691b1..49bee3c 100644 --- a/common/iotrace.c +++ b/common/iotrace.c @@ -15,7 +15,8 @@ DECLARE_GLOBAL_DATA_PTR; * struct iotrace - current trace status and checksum * * @start: Start address of iotrace buffer - * @size: Size of iotrace buffer in bytes + * @size: Actual size of iotrace buffer in bytes + * @needed_size: Needed of iotrace buffer in bytes * @offset: Current write offset into iotrace buffer * @region_start: Address of IO region to trace * @region_size: Size of region to trace. if 0 will trace all address space @@ -25,6 +26,7 @@ DECLARE_GLOBAL_DATA_PTR; static struct iotrace { ulong start; ulong size; + ulong needed_size; ulong offset; ulong region_start; ulong region_size; @@ -55,7 +57,12 @@ static void add_record(int flags, const void *ptr, ulong value) rec = (struct iotrace_record *)map_sysmem( iotrace.start + iotrace.offset, sizeof(value)); + } else { + WARN_ONCE(1, "WARNING: iotrace buffer exhausted, please check needed length using \"iotrace stats\"\n"); + iotrace.needed_size += sizeof(struct iotrace_record); + return; } + rec->timestamp = timer_get_us(); rec->flags = flags; rec->addr = map_to_sysmem(ptr); @@ -65,6 +72,7 @@ static void add_record(int flags, const void *ptr, ulong value) iotrace.crc32 = crc32(iotrace.crc32, (unsigned char *)rec, sizeof(*rec)); + iotrace.needed_size += sizeof(struct iotrace_record); iotrace.offset += sizeof(struct iotrace_record); } @@ -162,10 +170,11 @@ void iotrace_set_buffer(ulong start, ulong size) iotrace.crc32 = 0; } -void iotrace_get_buffer(ulong *start, ulong *size, ulong *offset, ulong *count) +void iotrace_get_buffer(ulong *start, ulong *size, ulong *needed_size, ulong *offset, ulong *count) { *start = iotrace.start; *size = iotrace.size; + *needed_size = iotrace.needed_size; *offset = iotrace.offset; *count = iotrace.offset / sizeof(struct iotrace_record); } |