This series improves the startup of SMP processors for MIPS. Firstly, replace the use of a bitmask of CPUs to detect secondard CPUs starting with a completion event. This change means that secondary CPUs can fail to start, and this will be detected and handled rather than hanging the kernel. The second patch removes the now redundant CPU bitmask. The third patch improves error handling in the CPS SMP implementation. In an unlikely corner case where no online CPU is available in a core to start a secondary VPE, previously the kernel would BUG(), this patch causes a warning to be printed and the situation handled more gracefully. This series is based on v4.9-rc1 and has been tested on Boston, Malta, SEAD3, Octeon and Pistachio Ci40 platforms. Matt Redfearn (3): MIPS: smp: Use a completion event to signal CPU up MIPS: smp: Remove cpu_callin_map MIPS: smp-cps: Don't BUG if a CPU fails to start arch/mips/cavium-octeon/smp.c | 1 - arch/mips/include/asm/smp.h | 2 -- arch/mips/kernel/process.c | 4 +--- arch/mips/kernel/smp-bmips.c | 1 - arch/mips/kernel/smp-cps.c | 7 +++++-- arch/mips/kernel/smp.c | 17 +++++++++-------- arch/mips/loongson64/loongson-3/smp.c | 1 - 7 files changed, 15 insertions(+), 18 deletions(-) -- 2.7.4
