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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-05-28 10:58:19 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-05-29 11:06:07 +0200 |
| commit | 2f6108f93b3ee4dcc85b236593d4c57c7652bf1b (patch) | |
| tree | 841e4daad0d7f0e1dcd7a6eb91271731662c77e4 /c/src/lib/libbsp/sparc/erc32 | |
| parent | smp: Delete bsp_smp_secondary_cpu_initialize() (diff) | |
| download | rtems-2f6108f93b3ee4dcc85b236593d4c57c7652bf1b.tar.bz2 | |
smp: Simplify SMP initialization sequence
Delete bsp_smp_wait_for(). Other parts of the system work without
timeout, e.g. the spinlocks. Using a timeout here does not make the
system more robust.
Delete bsp_smp_cpu_state and replace it with Per_CPU_State. The
Per_CPU_State follows the Score naming conventions. Add
_Per_CPU_Change_state() and _Per_CPU_Wait_for_state() functions to
change and observe states.
Use Per_CPU_State in Per_CPU_Control instead of the anonymous integer.
Add _CPU_Processor_event_broadcast() and _CPU_Processor_event_receive()
functions provided by the CPU port. Use these functions in
_Per_CPU_Change_state() and _Per_CPU_Wait_for_state().
Add prototype for _SMP_Send_message().
Delete RTEMS_BSP_SMP_FIRST_TASK message. The first context switch is
now performed in rtems_smp_secondary_cpu_initialize(). Issuing the
first context switch in the context of the inter-processor interrupt is
not possible on systems with a modern interrupt controller. Such an
interrupt controler usually requires a handshake protocol with interrupt
acknowledge and end of interrupt signals. A direct context switch in an
interrupt handler circumvents the interrupt processing epilogue and may
leave the system in an inconsistent state.
Release lock in rtems_smp_process_interrupt() even if no message was
delivered. This prevents deadlock of the system.
Simplify and format _SMP_Send_message(),
_SMP_Request_other_cores_to_perform_first_context_switch(),
_SMP_Request_other_cores_to_dispatch() and
_SMP_Request_other_cores_to_shutdown().
Diffstat (limited to 'c/src/lib/libbsp/sparc/erc32')
| -rw-r--r-- | c/src/lib/libbsp/sparc/erc32/Makefile.am | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/c/src/lib/libbsp/sparc/erc32/Makefile.am b/c/src/lib/libbsp/sparc/erc32/Makefile.am index ddb8d94c3b..988f3ec88a 100644 --- a/c/src/lib/libbsp/sparc/erc32/Makefile.am +++ b/c/src/lib/libbsp/sparc/erc32/Makefile.am @@ -66,8 +66,7 @@ libbsp_a_SOURCES += \ ../../shared/src/irq-shell.c if HAS_SMP -libbsp_a_SOURCES += ../../shared/smp/getcpuid.c ../../shared/smp/smp_stub.c \ - ../../shared/smp/bspsmp_wait_for.c +libbsp_a_SOURCES += ../../shared/smp/getcpuid.c ../../shared/smp/smp_stub.c endif if HAS_NETWORKING |