Messages in this thread | | | Date | Sun, 2 Mar 2003 05:15:06 -0800 | From | William Lee Irwin III <> | Subject | Re: percpu-2.5.63-bk5-1 (properly generated) |
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On Sun, Mar 02, 2003 at 03:07:47AM -0800, William Lee Irwin III wrote: > This patch does 3 different things: > (1) shoves per-cpu areas into node-local memory > (2) creates a new per-node thing analogous to per-cpu > (3) uses (1) and (2) to shove several frequently-accessed things into > node-local memory > Tested, boots, and runs on NUMA-Q. Trims 6s of 41s off kernel compiles. > Compiletested for walmart x86 SMP/UP, and could use runtime testing. > A few non-x86 arches probably need fixups for per_cpu irq_stat[]. > Also available at: > ftp://ftp.kernel.org/pub/linux/kernel/people/wli/percpu/
Okay, I got requests for a more detailed changelog, so here it is: This patch does 19 different things when put under the microscope and/or in an excessively finegrained subdivision of simple concepts.
(1) reuse the arch/i386/discontigmem.c per-node mem_map[] virtual remap to remap node-local memory backing per_cpu and per_node areas (2) make irq_stat[] per_cpu, x86-only (3) make mmu_gathers[] per_cpu, with comcomitant divorce from asm-generic (4) delay discontig zone_sizes_init() to dodge bootstrap order issues (5) add .data.pernode section handling in vmlinux.lds.S (6) per_cpu()/__get_cpu_var() needs to parenthesize the cpu arg (7) introduced asm-generic/pernode.h to do similar things as percpu.h (8) added MAX_NODE_CPUS for pessimistic sizing of virtual remapping arenas (9) fix return type error in NUMA-Q get_zholes_size() (10) #undef asm-i386/per{cpu,node}.h's __GENERIC_PER_{CPU,NODE} (11) declare setup_per_cpu_areas() in asm-i386/percpu.h (12) make an asm-i386/pernode.h stub header like include/asm-generic/pernode.h (13) declare MAX_NODE_CPUS in include/asm-i386/srat.h (14) make zone_table[] per_node (15) call setup_per_node_areas() in init/main.c, with analogous hooks (16) make task_cache per_cpu (17) make runqueues[] per_cpu (18) make node_nr_running[] per_node (19) make reap_timers[] per_cpu
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