@@ -1266,6 +1266,7 @@ static void *allocate_page_map(struct tracecmd_input *handle,
off64_t map_offset;
void *map;
int ret;
+ int fd;
if (handle->read_page) {
map = malloc(handle->page_size);
@@ -1305,12 +1306,15 @@ static void *allocate_page_map(struct tracecmd_input *handle,
map_size -= map_offset + map_size -
(cpu_data->file_offset + cpu_data->file_size);
+ if (cpu_data->compress.fd >= 0)
+ fd = cpu_data->compress.fd;
+ else
+ fd = handle->fd;
again:
page_map->size = map_size;
page_map->offset = map_offset;
- page_map->map = mmap(NULL, map_size, PROT_READ, MAP_PRIVATE,
- handle->fd, map_offset);
+ page_map->map = mmap(NULL, map_size, PROT_READ, MAP_PRIVATE, fd, map_offset);
if (page_map->map == MAP_FAILED) {
/* Try a smaller map */
@@ -2498,16 +2502,76 @@ tracecmd_read_prev(struct tracecmd_input *handle, struct tep_record *record)
/* Not reached */
}
-static int init_cpu(struct tracecmd_input *handle, int cpu)
+static int init_cpu_zfile(struct tracecmd_input *handle, int cpu)
+{
+ struct cpu_data *cpu_data;
+ unsigned long long size;
+ off64_t offset;
+
+ cpu_data = &handle->cpu_data[cpu];
+ offset = lseek64(handle->fd, 0, SEEK_CUR);
+ if (lseek64(handle->fd, cpu_data->file_offset, SEEK_SET) == (off_t)-1)
+ return -1;
+ strcpy(cpu_data->compress.file, COMPR_TEMP_FILE);
+ cpu_data->compress.fd = mkstemp(cpu_data->compress.file);
+ if (cpu_data->compress.fd < 0)
+ return -1;
+ if (tracecmd_uncompress_copy_to(handle->compress, cpu_data->compress.fd, NULL, &size))
+ return -1;
+ if (lseek64(handle->fd, offset, SEEK_SET) == (off_t)-1)
+ return -1;
+ cpu_data->offset = 0;
+ cpu_data->file_offset = 0;
+ cpu_data->file_size = size;
+ cpu_data->size = size;
+ return 0;
+}
+
+static int init_cpu_zpage(struct tracecmd_input *handle, int cpu)
{
struct cpu_data *cpu_data = &handle->cpu_data[cpu];
+ int count;
int i;
+ if (lseek64(handle->fd, cpu_data->file_offset, SEEK_SET) == (off_t)-1)
+ return -1;
+
+ count = tracecmd_load_chunks_info(handle->compress, &cpu_data->compress.chunks);
+ if (count < 0)
+ return -1;
+ cpu_data->compress.count = count;
+ cpu_data->compress.last_chunk = 0;
+
+ cpu_data->file_offset = 0;
+ cpu_data->file_size = 0;
+ for (i = 0; i < count; i++)
+ cpu_data->file_size += cpu_data->compress.chunks[i].size;
cpu_data->offset = cpu_data->file_offset;
cpu_data->size = cpu_data->file_size;
+ return 0;
+}
+
+static int init_cpu(struct tracecmd_input *handle, int cpu)
+{
+ struct cpu_data *cpu_data = &handle->cpu_data[cpu];
+ int ret;
+ int i;
+
+ if (handle->cpu_compressed && cpu_data->file_size > 0) {
+ if (handle->read_zpage)
+ ret = init_cpu_zpage(handle, cpu);
+ else
+ ret = init_cpu_zfile(handle, cpu);
+ if (ret)
+ return ret;
+ } else {
+ cpu_data->offset = cpu_data->file_offset;
+ cpu_data->size = cpu_data->file_size;
+ }
cpu_data->timestamp = 0;
list_head_init(&cpu_data->page_maps);
+ list_head_init(&cpu_data->compress.cache);
if (!cpu_data->size) {
printf("CPU %d is empty\n", cpu);
@@ -3393,6 +3457,8 @@ static int init_buffer_cpu_data(struct tracecmd_input *handle, struct input_buff
return -1;
if (read_section_header(handle, &id, &flags, NULL, NULL))
return -1;
+ if (flags & TRACECMD_SEC_FL_COMPRESS)
+ handle->cpu_compressed = true;
if (buffer->latency) {
handle->file_state = TRACECMD_FILE_CPU_LATENCY;
return init_latency_data(handle) == 0 ? 1 : -1;
On CPU data initialization stage, initialize decompression context for both in-memory and temporary file decompression logics. Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> --- lib/trace-cmd/trace-input.c | 72 +++++++++++++++++++++++++++++++++++-- 1 file changed, 69 insertions(+), 3 deletions(-)