diff options
Diffstat (limited to 'cpukit/score/include/rtems/score/percpu.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/percpu.h | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/cpukit/score/include/rtems/score/percpu.h b/cpukit/score/include/rtems/score/percpu.h index 97cb2bea15..00528b5ce3 100644 --- a/cpukit/score/include/rtems/score/percpu.h +++ b/cpukit/score/include/rtems/score/percpu.h @@ -248,20 +248,23 @@ typedef struct { */ typedef enum { /** - * @brief Index for relative per-CPU watchdog header. + * @brief Index for monotonic clock per-CPU watchdog header. * - * The reference time point for this header is current ticks value - * during insert. Time is measured in clock ticks. + * The reference time point for the monotonic clock is the system start. The + * clock resolution is one system clock tick. It is used for the system + * clock tick based time services and the POSIX services using + * CLOCK_MONOTONIC. */ - PER_CPU_WATCHDOG_RELATIVE, + PER_CPU_WATCHDOG_MONOTONIC, /** - * @brief Index for absolute per-CPU watchdog header. + * @brief Index for realtime clock per-CPU watchdog header. * - * The reference time point for this header is the POSIX Epoch. Time is - * measured in nanoseconds since POSIX Epoch. + * The reference time point for the realtime clock is the POSIX Epoch. The + * clock resolution is one nanosecond. It is used for the time of day + * services and the POSIX services using CLOCK_REALTIME. */ - PER_CPU_WATCHDOG_ABSOLUTE, + PER_CPU_WATCHDOG_REALTIME, /** * @brief Count of per-CPU watchdog headers. @@ -395,7 +398,8 @@ typedef struct Per_CPU_Control { ISR_LOCK_MEMBER( Lock ) /** - * @brief Watchdog ticks on this processor used for relative watchdogs. + * @brief Watchdog ticks on this processor used for monotonic clock + * watchdogs. */ uint64_t ticks; |