| Message ID | 20230827101128.70931-6-bhe@redhat.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | kdump: use generic functions to simplify crashkernel reservation in architectures | expand |
Hi Baoquan,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/x86/core]
[also build test ERROR on powerpc/next powerpc/fixes linus/master v6.5-rc7]
[cannot apply to arm64/for-next/core next-20230825]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/crash_core-c-remove-unnecessary-parameter-of-function/20230827-181555
base: tip/x86/core
patch link: https://lore.kernel.org/r/20230827101128.70931-6-bhe%40redhat.com
patch subject: [PATCH 5/8] crash_core: add generic function to do reservation
config: csky-defconfig (https://download.01.org/0day-ci/archive/20230827/202308272150.p3kRkMoF-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230827/202308272150.p3kRkMoF-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308272150.p3kRkMoF-lkp@intel.com/
All errors (new ones prefixed by >>):
537 | void __weak arch_crash_save_vmcoreinfo(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:540:20: warning: no previous prototype for 'paddr_vmcoreinfo_note' [-Wmissing-prototypes]
540 | phys_addr_t __weak paddr_vmcoreinfo_note(void)
| ^~~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c: In function 'crash_save_vmcoreinfo_init':
kernel/crash_core.c:554:45: error: 'VMCOREINFO_NOTE_SIZE' undeclared (first use in this function)
554 | vmcoreinfo_note = alloc_pages_exact(VMCOREINFO_NOTE_SIZE,
| ^~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:563:9: error: implicit declaration of function 'VMCOREINFO_OSRELEASE' [-Werror=implicit-function-declaration]
563 | VMCOREINFO_OSRELEASE(init_uts_ns.name.release);
| ^~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:564:9: error: implicit declaration of function 'VMCOREINFO_BUILD_ID' [-Werror=implicit-function-declaration]
564 | VMCOREINFO_BUILD_ID();
| ^~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:565:9: error: implicit declaration of function 'VMCOREINFO_PAGESIZE' [-Werror=implicit-function-declaration]
565 | VMCOREINFO_PAGESIZE(PAGE_SIZE);
| ^~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:567:9: error: implicit declaration of function 'VMCOREINFO_SYMBOL' [-Werror=implicit-function-declaration]
567 | VMCOREINFO_SYMBOL(init_uts_ns);
| ^~~~~~~~~~~~~~~~~
kernel/crash_core.c:568:9: error: implicit declaration of function 'VMCOREINFO_OFFSET' [-Werror=implicit-function-declaration]
568 | VMCOREINFO_OFFSET(uts_namespace, name);
| ^~~~~~~~~~~~~~~~~
kernel/crash_core.c:568:27: error: 'uts_namespace' undeclared (first use in this function)
568 | VMCOREINFO_OFFSET(uts_namespace, name);
| ^~~~~~~~~~~~~
kernel/crash_core.c:568:42: error: 'name' undeclared (first use in this function)
568 | VMCOREINFO_OFFSET(uts_namespace, name);
| ^~~~
kernel/crash_core.c:571:9: error: implicit declaration of function 'VMCOREINFO_SYMBOL_ARRAY' [-Werror=implicit-function-declaration]
571 | VMCOREINFO_SYMBOL_ARRAY(swapper_pg_dir);
| ^~~~~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:588:9: error: implicit declaration of function 'VMCOREINFO_STRUCT_SIZE' [-Werror=implicit-function-declaration]
588 | VMCOREINFO_STRUCT_SIZE(page);
| ^~~~~~~~~~~~~~~~~~~~~~
kernel/crash_core.c:588:32: error: 'page' undeclared (first use in this function)
588 | VMCOREINFO_STRUCT_SIZE(page);
| ^~~~
kernel/crash_core.c:589:32: error: 'pglist_data' undeclared (first use in this function)
589 | VMCOREINFO_STRUCT_SIZE(pglist_data);
| ^~~~~~~~~~~
kernel/crash_core.c:590:32: error: 'zone' undeclared (first use in this function)
590 | VMCOREINFO_STRUCT_SIZE(zone);
| ^~~~
kernel/crash_core.c:591:32: error: 'free_area' undeclared (first use in this function)
591 | VMCOREINFO_STRUCT_SIZE(free_area);
| ^~~~~~~~~
kernel/crash_core.c:592:32: error: 'list_head' undeclared (first use in this function)
592 | VMCOREINFO_STRUCT_SIZE(list_head);
| ^~~~~~~~~
kernel/crash_core.c:593:9: error: implicit declaration of function 'VMCOREINFO_SIZE' [-Werror=implicit-function-declaration]
593 | VMCOREINFO_SIZE(nodemask_t);
| ^~~~~~~~~~~~~~~
kernel/crash_core.c:593:25: error: expected expression before 'nodemask_t'
593 | VMCOREINFO_SIZE(nodemask_t);
| ^~~~~~~~~~
kernel/crash_core.c:594:33: error: 'flags' undeclared (first use in this function); did you mean 'fls'?
594 | VMCOREINFO_OFFSET(page, flags);
| ^~~~~
| fls
kernel/crash_core.c:595:33: error: '_refcount' undeclared (first use in this function); did you mean 'seqcount'?
595 | VMCOREINFO_OFFSET(page, _refcount);
| ^~~~~~~~~
| seqcount
kernel/crash_core.c:596:33: error: 'mapping' undeclared (first use in this function)
596 | VMCOREINFO_OFFSET(page, mapping);
| ^~~~~~~
kernel/crash_core.c:597:33: error: 'lru' undeclared (first use in this function)
597 | VMCOREINFO_OFFSET(page, lru);
| ^~~
kernel/crash_core.c:598:33: error: '_mapcount' undeclared (first use in this function); did you mean 'nmi_count'?
598 | VMCOREINFO_OFFSET(page, _mapcount);
| ^~~~~~~~~
| nmi_count
kernel/crash_core.c:599:33: error: 'private' undeclared (first use in this function); did you mean 'PG_private'?
599 | VMCOREINFO_OFFSET(page, private);
| ^~~~~~~
| PG_private
kernel/crash_core.c:600:27: error: 'folio' undeclared (first use in this function)
600 | VMCOREINFO_OFFSET(folio, _folio_dtor);
| ^~~~~
kernel/crash_core.c:600:34: error: '_folio_dtor' undeclared (first use in this function)
600 | VMCOREINFO_OFFSET(folio, _folio_dtor);
| ^~~~~~~~~~~
kernel/crash_core.c:601:34: error: '_folio_order' undeclared (first use in this function); did you mean 'folio_order'?
601 | VMCOREINFO_OFFSET(folio, _folio_order);
| ^~~~~~~~~~~~
| folio_order
kernel/crash_core.c:602:33: error: 'compound_head' undeclared (first use in this function); did you mean '_compound_head'?
602 | VMCOREINFO_OFFSET(page, compound_head);
| ^~~~~~~~~~~~~
| _compound_head
kernel/crash_core.c:603:40: error: 'node_zones' undeclared (first use in this function); did you mean 'node_zonelist'?
603 | VMCOREINFO_OFFSET(pglist_data, node_zones);
| ^~~~~~~~~~
| node_zonelist
kernel/crash_core.c:604:40: error: 'nr_zones' undeclared (first use in this function)
604 | VMCOREINFO_OFFSET(pglist_data, nr_zones);
| ^~~~~~~~
>> kernel/crash_core.c:606:40: error: 'node_mem_map' undeclared (first use in this function); did you mean 'node_remap'?
606 | VMCOREINFO_OFFSET(pglist_data, node_mem_map);
| ^~~~~~~~~~~~
| node_remap
kernel/crash_core.c:608:40: error: 'node_start_pfn' undeclared (first use in this function)
608 | VMCOREINFO_OFFSET(pglist_data, node_start_pfn);
| ^~~~~~~~~~~~~~
kernel/crash_core.c:609:40: error: 'node_spanned_pages' undeclared (first use in this function); did you mean 'zone_managed_pages'?
609 | VMCOREINFO_OFFSET(pglist_data, node_spanned_pages);
| ^~~~~~~~~~~~~~~~~~
| zone_managed_pages
kernel/crash_core.c:610:40: error: 'node_id' undeclared (first use in this function)
610 | VMCOREINFO_OFFSET(pglist_data, node_id);
| ^~~~~~~
kernel/crash_core.c:612:33: error: 'vm_stat' undeclared (first use in this function); did you mean 'vfs_stat'?
612 | VMCOREINFO_OFFSET(zone, vm_stat);
| ^~~~~~~
| vfs_stat
kernel/crash_core.c:613:33: error: 'spanned_pages' undeclared (first use in this function); did you mean 'shake_page'?
613 | VMCOREINFO_OFFSET(zone, spanned_pages);
| ^~~~~~~~~~~~~
| shake_page
kernel/crash_core.c:614:38: error: 'free_list' undeclared (first use in this function); did you mean 'kfree_link'?
614 | VMCOREINFO_OFFSET(free_area, free_list);
| ^~~~~~~~~
| kfree_link
kernel/crash_core.c:615:38: error: 'next' undeclared (first use in this function); did you mean 'net'?
615 | VMCOREINFO_OFFSET(list_head, next);
| ^~~~
| net
kernel/crash_core.c:616:38: error: 'prev' undeclared (first use in this function)
616 | VMCOREINFO_OFFSET(list_head, prev);
| ^~~~
kernel/crash_core.c:617:27: error: 'vmap_area' undeclared (first use in this function)
617 | VMCOREINFO_OFFSET(vmap_area, va_start);
| ^~~~~~~~~
kernel/crash_core.c:617:38: error: 'va_start' undeclared (first use in this function); did you mean '_start'?
617 | VMCOREINFO_OFFSET(vmap_area, va_start);
| ^~~~~~~~
| _start
kernel/crash_core.c:618:38: error: 'list' undeclared (first use in this function)
618 | VMCOREINFO_OFFSET(vmap_area, list);
| ^~~~
kernel/crash_core.c:619:9: error: implicit declaration of function 'VMCOREINFO_LENGTH' [-Werror=implicit-function-declaration]
619 | VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER + 1);
| ^~~~~~~~~~~~~~~~~
kernel/crash_core.c:622:9: error: implicit declaration of function 'VMCOREINFO_NUMBER' [-Werror=implicit-function-declaration]
622 | VMCOREINFO_NUMBER(NR_FREE_PAGES);
| ^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +606 kernel/crash_core.c
692f66f26a4c19d Hari Bathini 2017-05-08 545
692f66f26a4c19d Hari Bathini 2017-05-08 546 static int __init crash_save_vmcoreinfo_init(void)
692f66f26a4c19d Hari Bathini 2017-05-08 547 {
203e9e41219b4e7 Xunlei Pang 2017-07-12 548 vmcoreinfo_data = (unsigned char *)get_zeroed_page(GFP_KERNEL);
203e9e41219b4e7 Xunlei Pang 2017-07-12 549 if (!vmcoreinfo_data) {
203e9e41219b4e7 Xunlei Pang 2017-07-12 550 pr_warn("Memory allocation for vmcoreinfo_data failed\n");
203e9e41219b4e7 Xunlei Pang 2017-07-12 551 return -ENOMEM;
203e9e41219b4e7 Xunlei Pang 2017-07-12 552 }
203e9e41219b4e7 Xunlei Pang 2017-07-12 553
203e9e41219b4e7 Xunlei Pang 2017-07-12 554 vmcoreinfo_note = alloc_pages_exact(VMCOREINFO_NOTE_SIZE,
203e9e41219b4e7 Xunlei Pang 2017-07-12 555 GFP_KERNEL | __GFP_ZERO);
203e9e41219b4e7 Xunlei Pang 2017-07-12 556 if (!vmcoreinfo_note) {
203e9e41219b4e7 Xunlei Pang 2017-07-12 557 free_page((unsigned long)vmcoreinfo_data);
203e9e41219b4e7 Xunlei Pang 2017-07-12 558 vmcoreinfo_data = NULL;
203e9e41219b4e7 Xunlei Pang 2017-07-12 559 pr_warn("Memory allocation for vmcoreinfo_note failed\n");
203e9e41219b4e7 Xunlei Pang 2017-07-12 560 return -ENOMEM;
203e9e41219b4e7 Xunlei Pang 2017-07-12 561 }
203e9e41219b4e7 Xunlei Pang 2017-07-12 562
692f66f26a4c19d Hari Bathini 2017-05-08 563 VMCOREINFO_OSRELEASE(init_uts_ns.name.release);
44e8a5e9120bf4f Stephen Boyd 2021-07-07 564 VMCOREINFO_BUILD_ID();
692f66f26a4c19d Hari Bathini 2017-05-08 565 VMCOREINFO_PAGESIZE(PAGE_SIZE);
692f66f26a4c19d Hari Bathini 2017-05-08 566
692f66f26a4c19d Hari Bathini 2017-05-08 567 VMCOREINFO_SYMBOL(init_uts_ns);
ca4a9241cc5e718 Alexander Egorenkov 2020-12-15 568 VMCOREINFO_OFFSET(uts_namespace, name);
692f66f26a4c19d Hari Bathini 2017-05-08 569 VMCOREINFO_SYMBOL(node_online_map);
692f66f26a4c19d Hari Bathini 2017-05-08 570 #ifdef CONFIG_MMU
eff4345e7fba0aa Omar Sandoval 2018-08-21 571 VMCOREINFO_SYMBOL_ARRAY(swapper_pg_dir);
692f66f26a4c19d Hari Bathini 2017-05-08 572 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 573 VMCOREINFO_SYMBOL(_stext);
692f66f26a4c19d Hari Bathini 2017-05-08 574 VMCOREINFO_SYMBOL(vmap_area_list);
692f66f26a4c19d Hari Bathini 2017-05-08 575
a9ee6cf5c60ed10 Mike Rapoport 2021-06-28 576 #ifndef CONFIG_NUMA
692f66f26a4c19d Hari Bathini 2017-05-08 577 VMCOREINFO_SYMBOL(mem_map);
692f66f26a4c19d Hari Bathini 2017-05-08 578 VMCOREINFO_SYMBOL(contig_page_data);
692f66f26a4c19d Hari Bathini 2017-05-08 579 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 580 #ifdef CONFIG_SPARSEMEM
a0b1280368d1e91 Kirill A. Shutemov 2018-01-12 581 VMCOREINFO_SYMBOL_ARRAY(mem_section);
692f66f26a4c19d Hari Bathini 2017-05-08 582 VMCOREINFO_LENGTH(mem_section, NR_SECTION_ROOTS);
692f66f26a4c19d Hari Bathini 2017-05-08 583 VMCOREINFO_STRUCT_SIZE(mem_section);
692f66f26a4c19d Hari Bathini 2017-05-08 584 VMCOREINFO_OFFSET(mem_section, section_mem_map);
4f5aecdff25f59f Pingfan Liu 2021-06-15 585 VMCOREINFO_NUMBER(SECTION_SIZE_BITS);
1d50e5d0c505244 Bhupesh Sharma 2020-05-14 586 VMCOREINFO_NUMBER(MAX_PHYSMEM_BITS);
692f66f26a4c19d Hari Bathini 2017-05-08 587 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 588 VMCOREINFO_STRUCT_SIZE(page);
692f66f26a4c19d Hari Bathini 2017-05-08 589 VMCOREINFO_STRUCT_SIZE(pglist_data);
692f66f26a4c19d Hari Bathini 2017-05-08 590 VMCOREINFO_STRUCT_SIZE(zone);
692f66f26a4c19d Hari Bathini 2017-05-08 591 VMCOREINFO_STRUCT_SIZE(free_area);
692f66f26a4c19d Hari Bathini 2017-05-08 592 VMCOREINFO_STRUCT_SIZE(list_head);
692f66f26a4c19d Hari Bathini 2017-05-08 593 VMCOREINFO_SIZE(nodemask_t);
692f66f26a4c19d Hari Bathini 2017-05-08 594 VMCOREINFO_OFFSET(page, flags);
692f66f26a4c19d Hari Bathini 2017-05-08 595 VMCOREINFO_OFFSET(page, _refcount);
692f66f26a4c19d Hari Bathini 2017-05-08 596 VMCOREINFO_OFFSET(page, mapping);
692f66f26a4c19d Hari Bathini 2017-05-08 597 VMCOREINFO_OFFSET(page, lru);
692f66f26a4c19d Hari Bathini 2017-05-08 598 VMCOREINFO_OFFSET(page, _mapcount);
692f66f26a4c19d Hari Bathini 2017-05-08 599 VMCOREINFO_OFFSET(page, private);
1c5509be58f636a Matthew Wilcox (Oracle 2023-01-11 600) VMCOREINFO_OFFSET(folio, _folio_dtor);
1c5509be58f636a Matthew Wilcox (Oracle 2023-01-11 601) VMCOREINFO_OFFSET(folio, _folio_order);
692f66f26a4c19d Hari Bathini 2017-05-08 602 VMCOREINFO_OFFSET(page, compound_head);
692f66f26a4c19d Hari Bathini 2017-05-08 603 VMCOREINFO_OFFSET(pglist_data, node_zones);
692f66f26a4c19d Hari Bathini 2017-05-08 604 VMCOREINFO_OFFSET(pglist_data, nr_zones);
43b02ba93b25b1c Mike Rapoport 2021-06-28 605 #ifdef CONFIG_FLATMEM
692f66f26a4c19d Hari Bathini 2017-05-08 @606 VMCOREINFO_OFFSET(pglist_data, node_mem_map);
692f66f26a4c19d Hari Bathini 2017-05-08 607 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 608 VMCOREINFO_OFFSET(pglist_data, node_start_pfn);
692f66f26a4c19d Hari Bathini 2017-05-08 609 VMCOREINFO_OFFSET(pglist_data, node_spanned_pages);
692f66f26a4c19d Hari Bathini 2017-05-08 610 VMCOREINFO_OFFSET(pglist_data, node_id);
692f66f26a4c19d Hari Bathini 2017-05-08 611 VMCOREINFO_OFFSET(zone, free_area);
692f66f26a4c19d Hari Bathini 2017-05-08 612 VMCOREINFO_OFFSET(zone, vm_stat);
692f66f26a4c19d Hari Bathini 2017-05-08 613 VMCOREINFO_OFFSET(zone, spanned_pages);
692f66f26a4c19d Hari Bathini 2017-05-08 614 VMCOREINFO_OFFSET(free_area, free_list);
692f66f26a4c19d Hari Bathini 2017-05-08 615 VMCOREINFO_OFFSET(list_head, next);
692f66f26a4c19d Hari Bathini 2017-05-08 616 VMCOREINFO_OFFSET(list_head, prev);
692f66f26a4c19d Hari Bathini 2017-05-08 617 VMCOREINFO_OFFSET(vmap_area, va_start);
692f66f26a4c19d Hari Bathini 2017-05-08 618 VMCOREINFO_OFFSET(vmap_area, list);
23baf831a32c04f Kirill A. Shutemov 2023-03-15 619 VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER + 1);
692f66f26a4c19d Hari Bathini 2017-05-08 620 log_buf_vmcoreinfo_setup();
692f66f26a4c19d Hari Bathini 2017-05-08 621 VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES);
692f66f26a4c19d Hari Bathini 2017-05-08 622 VMCOREINFO_NUMBER(NR_FREE_PAGES);
692f66f26a4c19d Hari Bathini 2017-05-08 623 VMCOREINFO_NUMBER(PG_lru);
692f66f26a4c19d Hari Bathini 2017-05-08 624 VMCOREINFO_NUMBER(PG_private);
692f66f26a4c19d Hari Bathini 2017-05-08 625 VMCOREINFO_NUMBER(PG_swapcache);
1cbf29da3628b66 Petr Tesarik 2018-04-13 626 VMCOREINFO_NUMBER(PG_swapbacked);
692f66f26a4c19d Hari Bathini 2017-05-08 627 VMCOREINFO_NUMBER(PG_slab);
692f66f26a4c19d Hari Bathini 2017-05-08 628 #ifdef CONFIG_MEMORY_FAILURE
692f66f26a4c19d Hari Bathini 2017-05-08 629 VMCOREINFO_NUMBER(PG_hwpoison);
692f66f26a4c19d Hari Bathini 2017-05-08 630 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 631 VMCOREINFO_NUMBER(PG_head_mask);
6e292b9be7f4358 Matthew Wilcox 2018-06-07 632 #define PAGE_BUDDY_MAPCOUNT_VALUE (~PG_buddy)
692f66f26a4c19d Hari Bathini 2017-05-08 633 VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE);
692f66f26a4c19d Hari Bathini 2017-05-08 634 #ifdef CONFIG_HUGETLB_PAGE
692f66f26a4c19d Hari Bathini 2017-05-08 635 VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR);
e04b742f74c2362 David Hildenbrand 2019-03-05 636 #define PAGE_OFFLINE_MAPCOUNT_VALUE (~PG_offline)
e04b742f74c2362 David Hildenbrand 2019-03-05 637 VMCOREINFO_NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE);
692f66f26a4c19d Hari Bathini 2017-05-08 638 #endif
692f66f26a4c19d Hari Bathini 2017-05-08 639
On 08/27/23 at 09:53pm, kernel test robot wrote: > Hi Baoquan, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on tip/x86/core] > [also build test ERROR on powerpc/next powerpc/fixes linus/master v6.5-rc7] > [cannot apply to arm64/for-next/core next-20230825] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/crash_core-c-remove-unnecessary-parameter-of-function/20230827-181555 > base: tip/x86/core > patch link: https://lore.kernel.org/r/20230827101128.70931-6-bhe%40redhat.com > patch subject: [PATCH 5/8] crash_core: add generic function to do reservation > config: csky-defconfig (https://download.01.org/0day-ci/archive/20230827/202308272150.p3kRkMoF-lkp@intel.com/config) > compiler: csky-linux-gcc (GCC) 13.2.0 > reproduce: (https://download.01.org/0day-ci/archive/20230827/202308272150.p3kRkMoF-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@intel.com> > | Closes: https://lore.kernel.org/oe-kbuild-all/202308272150.p3kRkMoF-lkp@intel.com/ Thanks for reporting this. The error is caused by patch 3: [PATCH 3/8] include/linux/kexec.h: move down crash_core.h including In this lkp's config, CONFIG_CRASH_CORE=y and CONFIG_KEXEC_CORE=n, the moving down of crash_core.h including will triger the error. I will think of another way to fix this. > > All errors (new ones prefixed by >>): > > 537 | void __weak arch_crash_save_vmcoreinfo(void) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:540:20: warning: no previous prototype for 'paddr_vmcoreinfo_note' [-Wmissing-prototypes] > 540 | phys_addr_t __weak paddr_vmcoreinfo_note(void) > | ^~~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c: In function 'crash_save_vmcoreinfo_init': > kernel/crash_core.c:554:45: error: 'VMCOREINFO_NOTE_SIZE' undeclared (first use in this function) > 554 | vmcoreinfo_note = alloc_pages_exact(VMCOREINFO_NOTE_SIZE, > | ^~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:563:9: error: implicit declaration of function 'VMCOREINFO_OSRELEASE' [-Werror=implicit-function-declaration] > 563 | VMCOREINFO_OSRELEASE(init_uts_ns.name.release); > | ^~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:564:9: error: implicit declaration of function 'VMCOREINFO_BUILD_ID' [-Werror=implicit-function-declaration] > 564 | VMCOREINFO_BUILD_ID(); > | ^~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:565:9: error: implicit declaration of function 'VMCOREINFO_PAGESIZE' [-Werror=implicit-function-declaration] > 565 | VMCOREINFO_PAGESIZE(PAGE_SIZE); > | ^~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:567:9: error: implicit declaration of function 'VMCOREINFO_SYMBOL' [-Werror=implicit-function-declaration] > 567 | VMCOREINFO_SYMBOL(init_uts_ns); > | ^~~~~~~~~~~~~~~~~ > kernel/crash_core.c:568:9: error: implicit declaration of function 'VMCOREINFO_OFFSET' [-Werror=implicit-function-declaration] > 568 | VMCOREINFO_OFFSET(uts_namespace, name); > | ^~~~~~~~~~~~~~~~~ > kernel/crash_core.c:568:27: error: 'uts_namespace' undeclared (first use in this function) > 568 | VMCOREINFO_OFFSET(uts_namespace, name); > | ^~~~~~~~~~~~~ > kernel/crash_core.c:568:42: error: 'name' undeclared (first use in this function) > 568 | VMCOREINFO_OFFSET(uts_namespace, name); > | ^~~~ > kernel/crash_core.c:571:9: error: implicit declaration of function 'VMCOREINFO_SYMBOL_ARRAY' [-Werror=implicit-function-declaration] > 571 | VMCOREINFO_SYMBOL_ARRAY(swapper_pg_dir); > | ^~~~~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:588:9: error: implicit declaration of function 'VMCOREINFO_STRUCT_SIZE' [-Werror=implicit-function-declaration] > 588 | VMCOREINFO_STRUCT_SIZE(page); > | ^~~~~~~~~~~~~~~~~~~~~~ > kernel/crash_core.c:588:32: error: 'page' undeclared (first use in this function) > 588 | VMCOREINFO_STRUCT_SIZE(page); > | ^~~~ > kernel/crash_core.c:589:32: error: 'pglist_data' undeclared (first use in this function) > 589 | VMCOREINFO_STRUCT_SIZE(pglist_data); > | ^~~~~~~~~~~ > kernel/crash_core.c:590:32: error: 'zone' undeclared (first use in this function) > 590 | VMCOREINFO_STRUCT_SIZE(zone); > | ^~~~ > kernel/crash_core.c:591:32: error: 'free_area' undeclared (first use in this function) > 591 | VMCOREINFO_STRUCT_SIZE(free_area); > | ^~~~~~~~~ > kernel/crash_core.c:592:32: error: 'list_head' undeclared (first use in this function) > 592 | VMCOREINFO_STRUCT_SIZE(list_head); > | ^~~~~~~~~ > kernel/crash_core.c:593:9: error: implicit declaration of function 'VMCOREINFO_SIZE' [-Werror=implicit-function-declaration] > 593 | VMCOREINFO_SIZE(nodemask_t); > | ^~~~~~~~~~~~~~~ > kernel/crash_core.c:593:25: error: expected expression before 'nodemask_t' > 593 | VMCOREINFO_SIZE(nodemask_t); > | ^~~~~~~~~~ > kernel/crash_core.c:594:33: error: 'flags' undeclared (first use in this function); did you mean 'fls'? > 594 | VMCOREINFO_OFFSET(page, flags); > | ^~~~~ > | fls > kernel/crash_core.c:595:33: error: '_refcount' undeclared (first use in this function); did you mean 'seqcount'? > 595 | VMCOREINFO_OFFSET(page, _refcount); > | ^~~~~~~~~ > | seqcount > kernel/crash_core.c:596:33: error: 'mapping' undeclared (first use in this function) > 596 | VMCOREINFO_OFFSET(page, mapping); > | ^~~~~~~ > kernel/crash_core.c:597:33: error: 'lru' undeclared (first use in this function) > 597 | VMCOREINFO_OFFSET(page, lru); > | ^~~ > kernel/crash_core.c:598:33: error: '_mapcount' undeclared (first use in this function); did you mean 'nmi_count'? > 598 | VMCOREINFO_OFFSET(page, _mapcount); > | ^~~~~~~~~ > | nmi_count > kernel/crash_core.c:599:33: error: 'private' undeclared (first use in this function); did you mean 'PG_private'? > 599 | VMCOREINFO_OFFSET(page, private); > | ^~~~~~~ > | PG_private > kernel/crash_core.c:600:27: error: 'folio' undeclared (first use in this function) > 600 | VMCOREINFO_OFFSET(folio, _folio_dtor); > | ^~~~~ > kernel/crash_core.c:600:34: error: '_folio_dtor' undeclared (first use in this function) > 600 | VMCOREINFO_OFFSET(folio, _folio_dtor); > | ^~~~~~~~~~~ > kernel/crash_core.c:601:34: error: '_folio_order' undeclared (first use in this function); did you mean 'folio_order'? > 601 | VMCOREINFO_OFFSET(folio, _folio_order); > | ^~~~~~~~~~~~ > | folio_order > kernel/crash_core.c:602:33: error: 'compound_head' undeclared (first use in this function); did you mean '_compound_head'? > 602 | VMCOREINFO_OFFSET(page, compound_head); > | ^~~~~~~~~~~~~ > | _compound_head > kernel/crash_core.c:603:40: error: 'node_zones' undeclared (first use in this function); did you mean 'node_zonelist'? > 603 | VMCOREINFO_OFFSET(pglist_data, node_zones); > | ^~~~~~~~~~ > | node_zonelist > kernel/crash_core.c:604:40: error: 'nr_zones' undeclared (first use in this function) > 604 | VMCOREINFO_OFFSET(pglist_data, nr_zones); > | ^~~~~~~~ > >> kernel/crash_core.c:606:40: error: 'node_mem_map' undeclared (first use in this function); did you mean 'node_remap'? > 606 | VMCOREINFO_OFFSET(pglist_data, node_mem_map); > | ^~~~~~~~~~~~ > | node_remap > kernel/crash_core.c:608:40: error: 'node_start_pfn' undeclared (first use in this function) > 608 | VMCOREINFO_OFFSET(pglist_data, node_start_pfn); > | ^~~~~~~~~~~~~~ > kernel/crash_core.c:609:40: error: 'node_spanned_pages' undeclared (first use in this function); did you mean 'zone_managed_pages'? > 609 | VMCOREINFO_OFFSET(pglist_data, node_spanned_pages); > | ^~~~~~~~~~~~~~~~~~ > | zone_managed_pages > kernel/crash_core.c:610:40: error: 'node_id' undeclared (first use in this function) > 610 | VMCOREINFO_OFFSET(pglist_data, node_id); > | ^~~~~~~ > kernel/crash_core.c:612:33: error: 'vm_stat' undeclared (first use in this function); did you mean 'vfs_stat'? > 612 | VMCOREINFO_OFFSET(zone, vm_stat); > | ^~~~~~~ > | vfs_stat > kernel/crash_core.c:613:33: error: 'spanned_pages' undeclared (first use in this function); did you mean 'shake_page'? > 613 | VMCOREINFO_OFFSET(zone, spanned_pages); > | ^~~~~~~~~~~~~ > | shake_page > kernel/crash_core.c:614:38: error: 'free_list' undeclared (first use in this function); did you mean 'kfree_link'? > 614 | VMCOREINFO_OFFSET(free_area, free_list); > | ^~~~~~~~~ > | kfree_link > kernel/crash_core.c:615:38: error: 'next' undeclared (first use in this function); did you mean 'net'? > 615 | VMCOREINFO_OFFSET(list_head, next); > | ^~~~ > | net > kernel/crash_core.c:616:38: error: 'prev' undeclared (first use in this function) > 616 | VMCOREINFO_OFFSET(list_head, prev); > | ^~~~ > kernel/crash_core.c:617:27: error: 'vmap_area' undeclared (first use in this function) > 617 | VMCOREINFO_OFFSET(vmap_area, va_start); > | ^~~~~~~~~ > kernel/crash_core.c:617:38: error: 'va_start' undeclared (first use in this function); did you mean '_start'? > 617 | VMCOREINFO_OFFSET(vmap_area, va_start); > | ^~~~~~~~ > | _start > kernel/crash_core.c:618:38: error: 'list' undeclared (first use in this function) > 618 | VMCOREINFO_OFFSET(vmap_area, list); > | ^~~~ > kernel/crash_core.c:619:9: error: implicit declaration of function 'VMCOREINFO_LENGTH' [-Werror=implicit-function-declaration] > 619 | VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER + 1); > | ^~~~~~~~~~~~~~~~~ > kernel/crash_core.c:622:9: error: implicit declaration of function 'VMCOREINFO_NUMBER' [-Werror=implicit-function-declaration] > 622 | VMCOREINFO_NUMBER(NR_FREE_PAGES); > | ^~~~~~~~~~~~~~~~~ > cc1: some warnings being treated as errors > > > vim +606 kernel/crash_core.c > > 692f66f26a4c19d Hari Bathini 2017-05-08 545 > 692f66f26a4c19d Hari Bathini 2017-05-08 546 static int __init crash_save_vmcoreinfo_init(void) > 692f66f26a4c19d Hari Bathini 2017-05-08 547 { > 203e9e41219b4e7 Xunlei Pang 2017-07-12 548 vmcoreinfo_data = (unsigned char *)get_zeroed_page(GFP_KERNEL); > 203e9e41219b4e7 Xunlei Pang 2017-07-12 549 if (!vmcoreinfo_data) { > 203e9e41219b4e7 Xunlei Pang 2017-07-12 550 pr_warn("Memory allocation for vmcoreinfo_data failed\n"); > 203e9e41219b4e7 Xunlei Pang 2017-07-12 551 return -ENOMEM; > 203e9e41219b4e7 Xunlei Pang 2017-07-12 552 } > 203e9e41219b4e7 Xunlei Pang 2017-07-12 553 > 203e9e41219b4e7 Xunlei Pang 2017-07-12 554 vmcoreinfo_note = alloc_pages_exact(VMCOREINFO_NOTE_SIZE, > 203e9e41219b4e7 Xunlei Pang 2017-07-12 555 GFP_KERNEL | __GFP_ZERO); > 203e9e41219b4e7 Xunlei Pang 2017-07-12 556 if (!vmcoreinfo_note) { > 203e9e41219b4e7 Xunlei Pang 2017-07-12 557 free_page((unsigned long)vmcoreinfo_data); > 203e9e41219b4e7 Xunlei Pang 2017-07-12 558 vmcoreinfo_data = NULL; > 203e9e41219b4e7 Xunlei Pang 2017-07-12 559 pr_warn("Memory allocation for vmcoreinfo_note failed\n"); > 203e9e41219b4e7 Xunlei Pang 2017-07-12 560 return -ENOMEM; > 203e9e41219b4e7 Xunlei Pang 2017-07-12 561 } > 203e9e41219b4e7 Xunlei Pang 2017-07-12 562 > 692f66f26a4c19d Hari Bathini 2017-05-08 563 VMCOREINFO_OSRELEASE(init_uts_ns.name.release); > 44e8a5e9120bf4f Stephen Boyd 2021-07-07 564 VMCOREINFO_BUILD_ID(); > 692f66f26a4c19d Hari Bathini 2017-05-08 565 VMCOREINFO_PAGESIZE(PAGE_SIZE); > 692f66f26a4c19d Hari Bathini 2017-05-08 566 > 692f66f26a4c19d Hari Bathini 2017-05-08 567 VMCOREINFO_SYMBOL(init_uts_ns); > ca4a9241cc5e718 Alexander Egorenkov 2020-12-15 568 VMCOREINFO_OFFSET(uts_namespace, name); > 692f66f26a4c19d Hari Bathini 2017-05-08 569 VMCOREINFO_SYMBOL(node_online_map); > 692f66f26a4c19d Hari Bathini 2017-05-08 570 #ifdef CONFIG_MMU > eff4345e7fba0aa Omar Sandoval 2018-08-21 571 VMCOREINFO_SYMBOL_ARRAY(swapper_pg_dir); > 692f66f26a4c19d Hari Bathini 2017-05-08 572 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 573 VMCOREINFO_SYMBOL(_stext); > 692f66f26a4c19d Hari Bathini 2017-05-08 574 VMCOREINFO_SYMBOL(vmap_area_list); > 692f66f26a4c19d Hari Bathini 2017-05-08 575 > a9ee6cf5c60ed10 Mike Rapoport 2021-06-28 576 #ifndef CONFIG_NUMA > 692f66f26a4c19d Hari Bathini 2017-05-08 577 VMCOREINFO_SYMBOL(mem_map); > 692f66f26a4c19d Hari Bathini 2017-05-08 578 VMCOREINFO_SYMBOL(contig_page_data); > 692f66f26a4c19d Hari Bathini 2017-05-08 579 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 580 #ifdef CONFIG_SPARSEMEM > a0b1280368d1e91 Kirill A. Shutemov 2018-01-12 581 VMCOREINFO_SYMBOL_ARRAY(mem_section); > 692f66f26a4c19d Hari Bathini 2017-05-08 582 VMCOREINFO_LENGTH(mem_section, NR_SECTION_ROOTS); > 692f66f26a4c19d Hari Bathini 2017-05-08 583 VMCOREINFO_STRUCT_SIZE(mem_section); > 692f66f26a4c19d Hari Bathini 2017-05-08 584 VMCOREINFO_OFFSET(mem_section, section_mem_map); > 4f5aecdff25f59f Pingfan Liu 2021-06-15 585 VMCOREINFO_NUMBER(SECTION_SIZE_BITS); > 1d50e5d0c505244 Bhupesh Sharma 2020-05-14 586 VMCOREINFO_NUMBER(MAX_PHYSMEM_BITS); > 692f66f26a4c19d Hari Bathini 2017-05-08 587 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 588 VMCOREINFO_STRUCT_SIZE(page); > 692f66f26a4c19d Hari Bathini 2017-05-08 589 VMCOREINFO_STRUCT_SIZE(pglist_data); > 692f66f26a4c19d Hari Bathini 2017-05-08 590 VMCOREINFO_STRUCT_SIZE(zone); > 692f66f26a4c19d Hari Bathini 2017-05-08 591 VMCOREINFO_STRUCT_SIZE(free_area); > 692f66f26a4c19d Hari Bathini 2017-05-08 592 VMCOREINFO_STRUCT_SIZE(list_head); > 692f66f26a4c19d Hari Bathini 2017-05-08 593 VMCOREINFO_SIZE(nodemask_t); > 692f66f26a4c19d Hari Bathini 2017-05-08 594 VMCOREINFO_OFFSET(page, flags); > 692f66f26a4c19d Hari Bathini 2017-05-08 595 VMCOREINFO_OFFSET(page, _refcount); > 692f66f26a4c19d Hari Bathini 2017-05-08 596 VMCOREINFO_OFFSET(page, mapping); > 692f66f26a4c19d Hari Bathini 2017-05-08 597 VMCOREINFO_OFFSET(page, lru); > 692f66f26a4c19d Hari Bathini 2017-05-08 598 VMCOREINFO_OFFSET(page, _mapcount); > 692f66f26a4c19d Hari Bathini 2017-05-08 599 VMCOREINFO_OFFSET(page, private); > 1c5509be58f636a Matthew Wilcox (Oracle 2023-01-11 600) VMCOREINFO_OFFSET(folio, _folio_dtor); > 1c5509be58f636a Matthew Wilcox (Oracle 2023-01-11 601) VMCOREINFO_OFFSET(folio, _folio_order); > 692f66f26a4c19d Hari Bathini 2017-05-08 602 VMCOREINFO_OFFSET(page, compound_head); > 692f66f26a4c19d Hari Bathini 2017-05-08 603 VMCOREINFO_OFFSET(pglist_data, node_zones); > 692f66f26a4c19d Hari Bathini 2017-05-08 604 VMCOREINFO_OFFSET(pglist_data, nr_zones); > 43b02ba93b25b1c Mike Rapoport 2021-06-28 605 #ifdef CONFIG_FLATMEM > 692f66f26a4c19d Hari Bathini 2017-05-08 @606 VMCOREINFO_OFFSET(pglist_data, node_mem_map); > 692f66f26a4c19d Hari Bathini 2017-05-08 607 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 608 VMCOREINFO_OFFSET(pglist_data, node_start_pfn); > 692f66f26a4c19d Hari Bathini 2017-05-08 609 VMCOREINFO_OFFSET(pglist_data, node_spanned_pages); > 692f66f26a4c19d Hari Bathini 2017-05-08 610 VMCOREINFO_OFFSET(pglist_data, node_id); > 692f66f26a4c19d Hari Bathini 2017-05-08 611 VMCOREINFO_OFFSET(zone, free_area); > 692f66f26a4c19d Hari Bathini 2017-05-08 612 VMCOREINFO_OFFSET(zone, vm_stat); > 692f66f26a4c19d Hari Bathini 2017-05-08 613 VMCOREINFO_OFFSET(zone, spanned_pages); > 692f66f26a4c19d Hari Bathini 2017-05-08 614 VMCOREINFO_OFFSET(free_area, free_list); > 692f66f26a4c19d Hari Bathini 2017-05-08 615 VMCOREINFO_OFFSET(list_head, next); > 692f66f26a4c19d Hari Bathini 2017-05-08 616 VMCOREINFO_OFFSET(list_head, prev); > 692f66f26a4c19d Hari Bathini 2017-05-08 617 VMCOREINFO_OFFSET(vmap_area, va_start); > 692f66f26a4c19d Hari Bathini 2017-05-08 618 VMCOREINFO_OFFSET(vmap_area, list); > 23baf831a32c04f Kirill A. Shutemov 2023-03-15 619 VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER + 1); > 692f66f26a4c19d Hari Bathini 2017-05-08 620 log_buf_vmcoreinfo_setup(); > 692f66f26a4c19d Hari Bathini 2017-05-08 621 VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES); > 692f66f26a4c19d Hari Bathini 2017-05-08 622 VMCOREINFO_NUMBER(NR_FREE_PAGES); > 692f66f26a4c19d Hari Bathini 2017-05-08 623 VMCOREINFO_NUMBER(PG_lru); > 692f66f26a4c19d Hari Bathini 2017-05-08 624 VMCOREINFO_NUMBER(PG_private); > 692f66f26a4c19d Hari Bathini 2017-05-08 625 VMCOREINFO_NUMBER(PG_swapcache); > 1cbf29da3628b66 Petr Tesarik 2018-04-13 626 VMCOREINFO_NUMBER(PG_swapbacked); > 692f66f26a4c19d Hari Bathini 2017-05-08 627 VMCOREINFO_NUMBER(PG_slab); > 692f66f26a4c19d Hari Bathini 2017-05-08 628 #ifdef CONFIG_MEMORY_FAILURE > 692f66f26a4c19d Hari Bathini 2017-05-08 629 VMCOREINFO_NUMBER(PG_hwpoison); > 692f66f26a4c19d Hari Bathini 2017-05-08 630 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 631 VMCOREINFO_NUMBER(PG_head_mask); > 6e292b9be7f4358 Matthew Wilcox 2018-06-07 632 #define PAGE_BUDDY_MAPCOUNT_VALUE (~PG_buddy) > 692f66f26a4c19d Hari Bathini 2017-05-08 633 VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE); > 692f66f26a4c19d Hari Bathini 2017-05-08 634 #ifdef CONFIG_HUGETLB_PAGE > 692f66f26a4c19d Hari Bathini 2017-05-08 635 VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR); > e04b742f74c2362 David Hildenbrand 2019-03-05 636 #define PAGE_OFFLINE_MAPCOUNT_VALUE (~PG_offline) > e04b742f74c2362 David Hildenbrand 2019-03-05 637 VMCOREINFO_NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE); > 692f66f26a4c19d Hari Bathini 2017-05-08 638 #endif > 692f66f26a4c19d Hari Bathini 2017-05-08 639 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki >
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h index 85260bf4a734..2f732493e922 100644 --- a/include/linux/crash_core.h +++ b/include/linux/crash_core.h @@ -77,12 +77,6 @@ Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, void *data, size_t data_len); void final_note(Elf_Word *buf); -#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION -#ifndef DEFAULT_CRASH_KERNEL_LOW_SIZE -#define DEFAULT_CRASH_KERNEL_LOW_SIZE (128UL << 20) -#endif -#endif - int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base, unsigned long long *low_size, bool *high); @@ -91,4 +85,32 @@ int parse_crashkernel_high(char *cmdline, unsigned long long system_ram, int parse_crashkernel_low(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base); +#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION +#ifndef DEFAULT_CRASH_KERNEL_LOW_SIZE +#define DEFAULT_CRASH_KERNEL_LOW_SIZE (128UL << 20) +#endif +#ifndef CRASH_ALIGN +#define CRASH_ALIGN SZ_2M +#endif +#ifndef CRASH_ADDR_LOW_MAX +#define CRASH_ADDR_LOW_MAX SZ_4G +#endif +#ifndef CRASH_ADDR_HIGH_MAX +#define CRASH_ADDR_HIGH_MAX memblock_end_of_DRAM() +#endif + +void __init reserve_crashkernel_generic(char *cmdline, + unsigned long long crash_size, + unsigned long long crash_base, + unsigned long long crash_low_size, + bool high); +#else +static inline void __init reserve_crashkernel_generic(char *cmdline, + unsigned long long crash_size, + unsigned long long crash_base, + unsigned long long crash_low_size, + bool high) +{} +#endif + #endif /* LINUX_CRASH_CORE_H */ diff --git a/kernel/crash_core.c b/kernel/crash_core.c index 355b0ab5189c..6bc00cc390b5 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -5,11 +5,13 @@ */ #include <linux/buildid.h> -#include <linux/crash_core.h> #include <linux/init.h> #include <linux/utsname.h> #include <linux/vmalloc.h> #include <linux/sizes.h> +#include <linux/memblock.h> +#include <linux/kexec.h> +#include <linux/kmemleak.h> #include <asm/page.h> #include <asm/sections.h> @@ -349,6 +351,111 @@ static int __init parse_crashkernel_dummy(char *arg) } early_param("crashkernel", parse_crashkernel_dummy); +#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION +static int __init reserve_crashkernel_low(unsigned long long low_size) +{ +#ifdef CONFIG_64BIT + unsigned long long low_base; + + low_base = memblock_phys_alloc_range(low_size, CRASH_ALIGN, 0, CRASH_ADDR_LOW_MAX); + if (!low_base) { + pr_err("cannot allocate crashkernel low memory (size:0x%llx).\n", low_size); + return -ENOMEM; + } + + pr_info("crashkernel low memory reserved: 0x%08llx - 0x%08llx (%lld MB)\n", + low_base, low_base + low_size, low_size >> 20); + + crashk_low_res.start = low_base; + crashk_low_res.end = low_base + low_size - 1; + insert_resource(&iomem_resource, &crashk_low_res); +#endif + return 0; +} + +void __init reserve_crashkernel_generic(char *cmdline, + unsigned long long crash_size, + unsigned long long crash_base, + unsigned long long crash_low_size, + bool high) +{ + unsigned long long search_end = CRASH_ADDR_LOW_MAX, search_base = 0; + bool fixed_base = false; + + /* User specifies base address explicitly. */ + if (crash_base) { + fixed_base = true; + search_base = crash_base; + search_end = crash_base + crash_size; + } + + if (high) { + search_base = CRASH_ADDR_LOW_MAX; + search_end = CRASH_ADDR_HIGH_MAX; + } + +retry: + crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, + search_base, search_end); + if (!crash_base) { + /* + * For crashkernel=size[KMG]@offset[KMG], print out failure + * message if can't reserve the specified region. + */ + if (fixed_base) { + pr_warn("crashkernel reservation failed - memory is in use.\n"); + return; + } + + /* + * For crashkernel=size[KMG], if the first attempt was for + * low memory, fall back to high memory, the minimum required + * low memory will be reserved later. + */ + if (!high && search_end == CRASH_ADDR_LOW_MAX) { + search_end = CRASH_ADDR_HIGH_MAX; + search_base = CRASH_ADDR_LOW_MAX; + crash_low_size = DEFAULT_CRASH_KERNEL_LOW_SIZE; + goto retry; + } + + /* + * For crashkernel=size[KMG],high, if the first attempt was + * for high memory, fall back to low memory. + */ + if (high && search_end == CRASH_ADDR_HIGH_MAX) { + search_end = CRASH_ADDR_LOW_MAX; + search_base = 0; + goto retry; + } + pr_warn("cannot allocate crashkernel (size:0x%llx)\n", + crash_size); + return; + } + + if ((crash_base > CRASH_ADDR_LOW_MAX) && + crash_low_size && reserve_crashkernel_low(crash_low_size)) { + memblock_phys_free(crash_base, crash_size); + return; + } + + pr_info("crashkernel reserved: 0x%016llx - 0x%016llx (%lld MB)\n", + crash_base, crash_base + crash_size, crash_size >> 20); + + /* + * The crashkernel memory will be removed from the kernel linear + * map. Inform kmemleak so that it won't try to access it. + */ + kmemleak_ignore_phys(crash_base); + if (crashk_low_res.end) + kmemleak_ignore_phys(crashk_low_res.start); + + crashk_res.start = crash_base; + crashk_res.end = crash_base + crash_size - 1; + insert_resource(&iomem_resource, &crashk_res); +} +#endif + Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, void *data, size_t data_len) {
In architecture like x86_64, arm64 and riscv, they have vast virtual address space and usually have huge physical memory RAM. Their crashkernel reservation doesn't have to be limited under 4G RAM, but can be extended to the whole physical memory via crashkernel=,high support. Now add function reserve_crashkernel_generic() to reserve crashkernel memory if users specify any case of kernel pamameters, like crashkernel=xM[@offset] or crashkernel=,high|low. This is preparation to simplify code of crashkernel=,high support in architecutures. Signed-off-by: Baoquan He <bhe@redhat.com> --- include/linux/crash_core.h | 34 ++++++++++-- kernel/crash_core.c | 109 ++++++++++++++++++++++++++++++++++++- 2 files changed, 136 insertions(+), 7 deletions(-)