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Diffstat (limited to 'docs/user-guide.md')
| -rw-r--r-- | docs/user-guide.md | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/docs/user-guide.md b/docs/user-guide.md index ebdb5a25..265061c4 100644 --- a/docs/user-guide.md +++ b/docs/user-guide.md @@ -274,8 +274,9 @@ performed. * `ENABLE_PSCI_STAT`: Boolean option to enable support for optional PSCI functions `PSCI_STAT_RESIDENCY` and `PSCI_STAT_COUNT`. Default is 0. - Enabling this option enables the `ENABLE_PMF` build option as well. - The PMF is used for collecting the statistics. + In the absence of an alternate stat collection backend, `ENABLE_PMF` must + be enabled. If `ENABLE_PMF` is set, the residency statistics are tracked in + software. * `ENABLE_RUNTIME_INSTRUMENTATION`: Boolean option to enable runtime instrumentation which injects timestamp collection points into |