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Commit Graph

3 Commits

Author SHA1 Message Date
Bryn M. Reeves
567189cc76 libdm: add per region precise timestamps property methods 2015-08-24 20:03:21 +01:00
Bryn M. Reeves
f4262026b6 libdm: add precise timestamps support to libdm-stats
Add support for the kernel precise_timestamps feature. This allows
regions to be created using counters with nanosecond precision.

A new dm_stats method, dm_stats_set_precise_timestamps() causes all
future regions created with this handle to attempt to enable precise
counters.
2015-08-24 20:03:21 +01:00
Bryn M. Reeves
386e91addb libdm: add dm_message_supports_precise_timestamps()
Add a function to test whether the kernel precise_timestamps
feature is available in the current device-mapper driver version.

Presence of precise_timestamps also implies the availability of
latency histograms.
2015-08-20 12:11:23 +01:00