MIPS: MT: Remove SMTC support

Nobody is maintaining SMTC anymore and there also seems to be no userbase.
Which is a pity - the SMTC technology primarily developed by Kevin D.
Kissell <kevink@paralogos.com> is an ingenious demonstration for the MT
ASE's power and elegance.

Based on Markos Chandras <Markos.Chandras@imgtec.com> patch
https://patchwork.linux-mips.org/patch/6719/ which while very similar did
no longer apply cleanly when I tried to merge it plus some additional
post-SMTC cleanup - SMTC was a feature as tricky to remove as it was to
merge once upon a time.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug
index 25de29211d76..3a2b775e8458 100644
--- a/arch/mips/Kconfig.debug
+++ b/arch/mips/Kconfig.debug
@@ -79,15 +79,6 @@ config CMDLINE_OVERRIDE
 
           Normally, you will choose 'N' here.
 
-config SMTC_IDLE_HOOK_DEBUG
-        bool "Enable additional debug checks before going into CPU idle loop"
-        depends on DEBUG_KERNEL && MIPS_MT_SMTC
-        help
-          This option enables Enable additional debug checks before going into
-          CPU idle loop.  For details on these checks, see
-          arch/mips/kernel/smtc.c.  This debugging option result in significant
-          overhead so should be disabled in production kernels.
-
 config SB1XXX_CORELIS
         bool "Corelis Debugger"
         depends on SIBYTE_SB1xxx_SOC