BMC/Intel-BMC/linux.git/arch/mips/netlogic/common, branch dev

MIPS: SMP: Don't increment irq_count multiple times for call function IPIs

2015-08-03T07:25:12+00:00

The majority of SMP platforms handle their IPIs through do_IRQ() which calls irq_{enter/exit}(). When a call function IPI is received, smp_call_function_interrupt() is called which also calls irq_{enter,exit}(), meaning irq_count is raised twice. When tick broadcasting is used (which is implemented via a call function IPI), this incorrectly causes all CPU idle time on the core receiving broadcast ticks to be accounted as time spent servicing IRQs, as account_process_tick() will account as such if irq_count is greater than 1. This results in 100% CPU usage being reported on a core which receives its ticks via broadcast. This patch removes the SMP smp_call_function_interrupt() wrapper which calls irq_{enter,exit}(). Platforms which handle their IPIs through do_IRQ() now call generic_smp_call_function_interrupt() directly to avoid incrementing irq_count a second time. Platforms which don't (loongson, sgi-ip27, sibyte) call generic_smp_call_function_interrupt() wrapped in irq_{enter,exit}(). Signed-off-by: Alex Smith Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10770/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: Fix double inclusion of .

2015-04-07T23:10:51+00:00

Signed-off-by: Ralf Baechle

MIPS: Netlogic: Do not enable SUE for core

2015-04-01T15:21:53+00:00

Enabling the SUE bit for core can can result in rare cache errors which are difficult to track down, so do not enable it. This can cause a minor performance loss in some tests. Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8894/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: Handle XLP hardware errata

2015-04-01T15:21:52+00:00

Core configuration register IFU_BRUB_RESERVE has to be setup to handle a silicon errata which can result in a CPU hang. Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8902/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: Move cores per node out of multi-node.h

2015-04-01T15:21:50+00:00

Use the current_cpu_data package field to get the node of the current CPU. This allows us to remove xlp_cores_per_node and move nlm_threads_per_node() and nlm_cores_per_node() to netlogic/common.h, which simplifies code. Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8889/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: Use MIPS topology.h

2015-04-01T15:21:50+00:00

commit bda4584cd943 ("MIPS: Support CPU topology files in sysfs") added topology related macros for all MIPS platforms and commit bbbf6d8768f5 ("MIPS: NL: Fix nlm_xlp_defconfig build error") removed most of the contents from mach-netlogic/topology.h. The netlogic specific topology is not needed anymore, we just need to setup the package field in current_cpu_data. Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8888/ Signed-off-by: Ralf Baechle

mips: use %*pb[l] to print bitmaps including cpumasks and nodemasks

2015-02-14T05:21:36+00:00

printk and friends can now format bitmaps using '%*pb[l]'. cpumask and nodemask also provide cpumask_pr_args() and nodemask_pr_args() respectively which can be used to generate the two printf arguments necessary to format the specified cpu/nodemask. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MIPS: Netlogic: Add support for XLP5XX

2014-05-30T14:50:38+00:00

Add support for the XLP5XX processor which is an 8 core variant of the XLP9XX. Add XLP5XX cases to code which earlier handled XLP9XX. Signed-off-by: Yonghong Song Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6871/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: PIC freq calculation for XLP 9XX/2XX

2014-05-30T14:49:41+00:00

Update PIC frequency calculation for XLP9XX and 2XX processors using the correct PLL registers. This should work for all possible board configurations. Signed-off-by: Ganesan Ramalingam Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6876/ Signed-off-by: Ralf Baechle

MIPS: Netlogic: Use PRID_IMP_MASK macro

2014-05-30T14:49:02+00:00

Use PRID_IMP_MASK macro instead of 0xff00 to extract the processor type. Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6868/ Signed-off-by: Ralf Baechle