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| author | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-02-15 15:15:22 +0000 |
|---|---|---|
| committer | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-05-29 10:08:18 +0000 |
| commit | 97c33d677f0130116ca40ca2e54a6aec7ad14961 (patch) | |
| tree | d0eb6676ac8e84dcfb236f013899264140f00268 /src/cpu/simple | |
| parent | 89b3397cf0daba4b2a339e26183aa82e1a573ad0 (diff) | |
| download | gem5-97c33d677f0130116ca40ca2e54a6aec7ad14961.tar.xz | |
cpu: Avoid unnecessary dynamic_pointer_cast in atomic model
In the atomic model a dynamic_pointer_cast is performed at every tick to
check if the fault is a SyscallRetryFault. This was happening even when
there was no generated fault.
Change-Id: I7f4afeffffdf4f988230e05286602d8d9a919c6c
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/10101
Reviewed-by: Brandon Potter <Brandon.Potter@amd.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Diffstat (limited to 'src/cpu/simple')
| -rw-r--r-- | src/cpu/simple/atomic.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc index bc7670b23..7a368ab32 100644 --- a/src/cpu/simple/atomic.cc +++ b/src/cpu/simple/atomic.cc @@ -628,7 +628,8 @@ AtomicSimpleCPU::tick() traceData = NULL; } - if (dynamic_pointer_cast<SyscallRetryFault>(fault)) { + if (fault != NoFault && + dynamic_pointer_cast<SyscallRetryFault>(fault)) { // Retry execution of system calls after a delay. // Prevents immediate re-execution since conditions which // caused the retry are unlikely to change every tick. |