|author||Ralf Baechle <email@example.com>||2010-09-16 11:40:41 +0100|
|committer||Ralf Baechle <firstname.lastname@example.org>||2010-10-04 18:33:56 +0100|
MIPS: Kconfig: Fix and clarify kconfig help text for VSMP and SMTC.
Only VSMP was known as SMVP and generally the help text was too short to be helpful. Signed-off-by: Ralf Baechle <email@example.com>
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ec410009e8f..5526faabfc2 100644
@@ -1647,8 +1647,16 @@ config MIPS_MT_SMP
- This is a kernel model which is also known a VSMP or lately
- has been marketesed into SMVP.
+ This is a kernel model which is known a VSMP but lately has been
+ marketesed into SMVP.
+ Virtual SMP uses the processor's VPEs to implement virtual
+ processors. In currently available configuration of the 34K processor
+ this allows for a dual processor. Both processors will share the same
+ primary caches; each will obtain the half of the TLB for it's own
+ exclusive use. For a layman this model can be described as similar to
+ what Intel calls Hyperthreading.
+ For further information see http://www.linux-mips.org/wiki/34K#VSMP
bool "SMTC: Use all TCs on all VPEs for SMP"
@@ -1665,6 +1673,14 @@ config MIPS_MT_SMTC
This is a kernel model which is known a SMTC or lately has been
marketesed into SMVP.
+ is presenting the available TC's of the core as processors to Linux.
+ On currently available 34K processors this means a Linux system will
+ see up to 5 processors. The implementation of the SMTC kernel differs
+ significantly from VSMP and cannot efficiently coexist in the same
+ kernel binary so the choice between VSMP and SMTC is a compile time
+ For further information see http://www.linux-mips.org/wiki/34K#SMTC