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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-05-23 14:17:25 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-06-15 13:02:44 +0200 |
| commit | 65f868cac6f7fd5c3ad02046574c19f8f4673255 (patch) | |
| tree | 15103fb87ed2e7161c17006e2c077f35e3506a95 /cpukit/include/rtems/counter.h | |
| parent | Add RTEMS_SYSINIT_CPU_COUNTER (diff) | |
| download | rtems-65f868cac6f7fd5c3ad02046574c19f8f4673255.tar.bz2 | |
Add _CPU_Counter_frequency()
Add rtems_counter_frequency() API function. Use it to initialize the
counter value converter via the new system initialization step
(RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation
and the counter converter. It avoids an unnecessary pull in of the
64-bit integer division from libgcc.
Update #3456.
Diffstat (limited to 'cpukit/include/rtems/counter.h')
| -rw-r--r-- | cpukit/include/rtems/counter.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/cpukit/include/rtems/counter.h b/cpukit/include/rtems/counter.h index 3b428402a8..e770c96eb0 100644 --- a/cpukit/include/rtems/counter.h +++ b/cpukit/include/rtems/counter.h @@ -7,7 +7,7 @@ */ /* - * Copyright (c) 2014 embedded brains GmbH. All rights reserved. + * Copyright (c) 2014, 2018 embedded brains GmbH. All rights reserved. * * embedded brains GmbH * Dornierstr. 4 @@ -62,6 +62,16 @@ extern "C" { typedef CPU_Counter_ticks rtems_counter_ticks; /** + * @brief Returns the current counter frequency in Hz. + * + * @return The current counter frequency in Hz. + */ +static inline uint32_t rtems_counter_frequency( void ) +{ + return _CPU_Counter_frequency(); +} + +/** * @brief Reads the current counter values. * * @return The current counter values. |