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| author | Yatharth Kochar <yatharth.kochar@arm.com> | 2016-03-11 14:20:19 +0000 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2016-06-16 08:31:42 +0100 |
| commit | a31d8983f42153b0448103bdd47e1f4c9c093765 (patch) | |
| tree | 2a2a051ce2179e8dcaf5efe3192bf0981e457c36 /docs | |
| parent | f9455cea8c38f36f12c524226ccfae2ed2dabf87 (diff) | |
Add Performance Measurement Framework(PMF)
This patch adds Performance Measurement Framework(PMF) in the
ARM Trusted Firmware. PMF is implemented as a library and the
SMC interface is provided through ARM SiP service.
The PMF provides capturing, storing, dumping and retrieving the
time-stamps, by enabling the development of services by different
providers, that can be easily integrated into ARM Trusted Firmware.
The PMF capture and retrieval APIs can also do appropriate cache
maintenance operations to the timestamp memory when the caller
indicates so.
`pmf_main.c` consists of core functions that implement service
registration, initialization, storing, dumping and retrieving
the time-stamp.
`pmf_smc.c` consists SMC handling for registered PMF services.
`pmf.h` consists of the macros that can be used by the PMF service
providers to register service and declare time-stamp functions.
`pmf_helpers.h` consists of internal macros that are used by `pmf.h`
By default this feature is disabled in the ARM trusted firmware.
To enable it set the boolean flag `ENABLE_PMF` to 1.
NOTE: The caller is responsible for specifying the appropriate cache
maintenance flags and for acquiring/releasing appropriate locks
before/after capturing/retrieving the time-stamps.
Change-Id: Ib45219ac07c2a81b9726ef6bd9c190cc55e81854
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/user-guide.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/user-guide.md b/docs/user-guide.md index 0bdedf90..f7fcf89b 100644 --- a/docs/user-guide.md +++ b/docs/user-guide.md @@ -408,6 +408,9 @@ performed. * `HANDLE_EA_EL3_FIRST`: When defined External Aborts and SError Interrupts will be always trapped in EL3 i.e. in BL31 at runtime. +* `ENABLE_PMF`: Boolean option to enable support for optional Performance + Measurement Framework(PMF). Default is 0. + #### ARM development platform specific build options * `ARM_TSP_RAM_LOCATION`: location of the TSP binary. Options: |