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libdm: enable creation of filemap regions with histograms

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This commit is contained in:
Bryn M. Reeves 2016-07-07 09:47:19 +01:00
parent c3caf4b80b
commit 4bb57341bd
1 changed files with 10 additions and 9 deletions
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19
libdm/libdm-stats.c
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@ -4247,6 +4247,7 @@ static uint64_t *_stats_create_file_regions(struct dm_stats *dms, int fd,
{ {
struct _extent *extents = NULL; struct _extent *extents = NULL;
uint64_t *regions = NULL, i; uint64_t *regions = NULL, i;
char *hist_arg = NULL;
struct statfs fsbuf; struct statfs fsbuf;
struct stat buf; struct stat buf;
@ -4279,6 +4280,12 @@ static uint64_t *_stats_create_file_regions(struct dm_stats *dms, int fd,
if (!(extents = _stats_get_extents_for_file(dms->mem, fd, count))) if (!(extents = _stats_get_extents_for_file(dms->mem, fd, count)))
return_0; return_0;
if (bounds) {
/* _build_histogram_arg enables precise if vals < 1ms. */
if (!(hist_arg = _build_histogram_arg(bounds, &precise)))
goto_out;
}
/* make space for end-of-table marker */ /* make space for end-of-table marker */
if (!(regions = dm_malloc((1 + *count) * sizeof(*regions)))) { if (!(regions = dm_malloc((1 + *count) * sizeof(*regions)))) {
log_error("Could not allocate memory for region IDs."); log_error("Could not allocate memory for region IDs.");
@ -4286,9 +4293,9 @@ static uint64_t *_stats_create_file_regions(struct dm_stats *dms, int fd,
} }
for (i = 0; i < *count; i++) { for (i = 0; i < *count; i++) {
if (!_stats_create_region(dms, regions + i, if (!_stats_create_region(dms, regions + i, extents[i].start,
extents[i].start, extents[i].len, -1, extents[i].len, -1, precise, hist_arg,
precise, NULL, dms->program_id, "")) { dms->program_id, "")) {
log_error("Failed to create region " FMTu64 " of " log_error("Failed to create region " FMTu64 " of "
FMTu64 " at " FMTu64 ".", i, *count, FMTu64 " at " FMTu64 ".", i, *count,
extents[i].start); extents[i].start);
@ -4321,12 +4328,6 @@ uint64_t *dm_stats_create_regions_from_fd(struct dm_stats *dms, int fd,
{ {
uint64_t *regions, count = 0; uint64_t *regions, count = 0;
if (bounds) {
log_error("File mapped groups with histograms are not "
"yet supported.");
return NULL;
}
if (alias && !group) { if (alias && !group) {
log_error("Cannot set alias without grouping regions."); log_error("Cannot set alias without grouping regions.");
return NULL; return NULL;