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| author | Michael Ellerman <mpe@ellerman.id.au> | 2014-05-23 10:15:27 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-05-28 05:35:35 +0200 |
| commit | 5853aef1ac5c5d83076203e840ca463857a7515d (patch) | |
| tree | 0446a6c5855dd6cf1e7aec37b9ea6f5651c4f579 /arch/powerpc/kernel/smp.c | |
| parent | powerpc/powernv: Make it possible to skip the IRQHAPPENED check in power7_nap() (diff) | |
| download | linux-5853aef1ac5c5d83076203e840ca463857a7515d.tar.xz linux-5853aef1ac5c5d83076203e840ca463857a7515d.zip | |
powerpc: Add threads_per_subcore
On POWER8 we have a new concept of a subcore. This is what happens when
you take a regular core and split it. A subcore is a grouping of two or
four SMT threads, as well as a handfull of SPRs which allows the subcore
to appear as if it were a core from the point of view of a guest.
Unlike threads_per_core which is fixed at boot, threads_per_subcore can
change while the system is running. Most code will not want to use
threads_per_subcore.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
0 files changed, 0 insertions, 0 deletions