From: ZhangPeng <zhangpeng362(a)huawei.com>
This patch set includes two patch sets: Mitigate a vmap lock contention
and mm/vmalloc: lock contention optimization under multi-threading.
In high-concurrency scenarios such as the "/test_vmalloc.sh
run_test_mask=7 nr_threads=64" scenario, the performance is improved by
more than 10x. The run time was reduced from 18m45.268s to 1m45.066s.
Changelog:
v2->v3:
- Fix commit format warning
v1->v2:
- Remove 2 maillist inclusion patches
- Merge patch 21 to resolve the conflict in patch 16
Alexei Starovoitov (3):
mm: Enforce VM_IOREMAP flag and range in ioremap_page_range.
mm: Introduce VM_SPARSE kind and vm_area_[un]map_pages().
mm: Introduce vmap_page_range() to map pages in PCI address space
Baoquan He (2):
mm/vmalloc: fix the unchecked dereference warning in vread_iter()
mm/vmalloc: remove vmap_area_list
Uladzislau Rezki (Sony) (13):
mm: vmalloc: add va_alloc() helper
mm: vmalloc: rename adjust_va_to_fit_type() function
mm: vmalloc: move vmap_init_free_space() down in vmalloc.c
mm: vmalloc: remove global vmap_area_root rb-tree
mm: vmalloc: remove global purge_vmap_area_root rb-tree
mm: vmalloc: offload free_vmap_area_lock lock
mm: vmalloc: add a scan area of VA only once
mm: vmalloc: support multiple nodes in vread_iter
mm: vmalloc: support multiple nodes in vmallocinfo
mm: vmalloc: set nr_nodes based on CPUs in a system
mm: vmalloc: add a shrinker to drain vmap pools
mm: vmalloc: improve description of vmap node layer
mm: vmalloc: refactor vmalloc_dump_obj() function
.../admin-guide/kdump/vmcoreinfo.rst | 8 +-
arch/arm/mm/ioremap.c | 8 +-
arch/arm64/kernel/crash_core.c | 1 -
arch/loongarch/kernel/setup.c | 2 +-
arch/mips/loongson64/init.c | 2 +-
arch/powerpc/kernel/isa-bridge.c | 4 +-
arch/riscv/kernel/crash_core.c | 1 -
drivers/pci/pci.c | 4 +-
include/linux/io.h | 7 +
include/linux/vmalloc.h | 6 +-
kernel/crash_core.c | 4 +-
kernel/kallsyms_selftest.c | 1 -
mm/nommu.c | 2 -
mm/vmalloc.c | 1156 +++++++++++++----
14 files changed, 914 insertions(+), 292 deletions(-)
--
2.25.1