diff options
| author | Nathan Lynch <nathanl@linux.ibm.com> | 2023-02-10 12:41:55 -0600 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-02-13 22:35:02 +1100 |
| commit | d6f7fe3b25f26213953066ce8109ea47dbd33cfa (patch) | |
| tree | 46a9f8675480394b1287c641766ebfbb5b96de1b /arch/powerpc/platforms | |
| parent | 836b5b9fcc8e09cea7e8a59a070349a00e818308 (diff) | |
| download | linux-d6f7fe3b25f26213953066ce8109ea47dbd33cfa.tar.gz | |
powerpc/pseries: drop RTAS-based timebase synchronization
The pseries platform has been LPAR-only for several generations, and
the PAPR spec:
* Guarantees that timebase synchronization is performed by
the platform ("The timebase registers are synchronized by the
platform before CPUs are given to the OS" - 7.3.8 SMP Support).
* Completely omits the RTAS freeze-time-base and thaw-time-base RTAS
functions, which are CHRP artifacts.
This code is effectively unused on currently supported models, so drop
it.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-7-26929c8cce78@linux.ibm.com
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/pseries/smp.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index fd2174edfa1d..2bcfee86ff87 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -278,11 +278,5 @@ void __init smp_init_pseries(void) cpumask_clear_cpu(boot_cpuid, of_spin_mask); } - /* Non-lpar has additional take/give timebase */ - if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { - smp_ops->give_timebase = rtas_give_timebase; - smp_ops->take_timebase = rtas_take_timebase; - } - pr_debug(" <- smp_init_pSeries()\n"); } |