----- Original Message ----- > > > ----- Original Message ----- > > From: Masayoshi Mizuma <m.mizuma@xxxxxxxxxxxxxx> > > > > Update for the "kmem -n" option to also dump memory block. > > Currently, "kmem -n" shows the memory section only. This > > patch gets available the memory block as well if 'memory_block' > > structure and 'memory_subsys' symbol exist. > > The memory block information is useful to investigate memory > > hot-plug issue. > > Masa, > > I added some information to the help page for "kmem -n", and queued > the patch for crash-7.2.5: > > https://github.com/crash-utility/crash/commit/e342618cb4fde8cd1fcf2ed39e23addac3540aea > > Thanks, > Dave Actually I was too quick to check the patch in -- it fails to build on most of the other architectures, like here on ppc64: $ make ... [ cut ] ... cc -c -g -DPPC64 -DLZO -DSNAPPY -DGDB_7_6 memory.c -Wall -O2 -Wstrict-prototypes -Wmissing-prototypes -fstack-protector -Wformat-security memory.c: In function ‘pfn_to_phys’: memory.c:17315:16: error: ‘PAGE_SHIFT’ undeclared (first use in this function) return pfn << PAGE_SHIFT; ^ memory.c:17315:16: note: each undeclared identifier is reported only once for each function it appears in memory.c:17316:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ make[4]: *** [memory.o] Error 1 make[3]: *** [gdb] Error 2 make[2]: *** [rebuild] Error 2 make[1]: *** [gdb_merge] Error 2 make: *** [warn] Error 2 $ It looks like PAGE_SHIFT is only #define'd for x86_64, 32-bit PPC, and SPARC64. Can you work on a architecture-neutral solution? Thanks, Dave > > > > > Signed-off-by: Masayoshi Mizuma <m.mizuma@xxxxxxxxxxxxxx> > > --- > > defs.h | 9 ++ > > memory.c | 286 +++++++++++++++++++++++++++++++++++++++++++++++++++--- > > symbols.c | 18 ++++ > > 3 files changed, 299 insertions(+), 14 deletions(-) > > > > diff --git a/defs.h b/defs.h > > index 5b64bb7..20dd6a7 100644 > > --- a/defs.h > > +++ b/defs.h > > @@ -2049,6 +2049,15 @@ struct offset_table { /* stash of > > commonly-used offsets */ > > long pci_bus_self; > > long device_kobj; > > long kobject_name; > > + long memory_block_dev; > > + long memory_block_start_section_nr; > > + long memory_block_end_section_nr; > > + long memory_block_state; > > + long memory_block_nid; > > + long mem_section_pageblock_flags; > > + long bus_type_p; > > + long device_private_device; > > + long device_private_knode_bus; > > }; > > > > struct size_table { /* stash of commonly-used sizes */ > > diff --git a/memory.c b/memory.c > > index ea25047..9657c28 100644 > > --- a/memory.c > > +++ b/memory.c > > @@ -255,13 +255,14 @@ static void PG_slab_flag_init(void); > > static ulong nr_blockdev_pages(void); > > void sparse_mem_init(void); > > void dump_mem_sections(int); > > +void dump_memory_blocks(int); > > void list_mem_sections(void); > > ulong sparse_decode_mem_map(ulong, ulong); > > char *read_mem_section(ulong); > > ulong nr_to_section(ulong); > > int valid_section(ulong); > > int section_has_mem_map(ulong); > > -ulong section_mem_map_addr(ulong); > > +ulong section_mem_map_addr(ulong, int); > > ulong valid_section_nr(ulong); > > ulong pfn_to_map(ulong); > > static int get_nodes_online(void); > > @@ -5528,7 +5529,7 @@ dump_mem_map_SPARSEMEM(struct meminfo *mi) > > pc->curcmd_flags |= HEADER_PRINTED; > > } > > > > - pp = section_mem_map_addr(section); > > + pp = section_mem_map_addr(section, 0); > > pp = sparse_decode_mem_map(pp, section_nr); > > phys = (physaddr_t) section_nr * PAGES_PER_SECTION() * PAGESIZE(); > > section_size = PAGES_PER_SECTION(); > > @@ -13389,7 +13390,7 @@ is_page_ptr(ulong addr, physaddr_t *phys) > > nr_mem_sections = vt->max_mem_section_nr+1; > > for (nr = 0; nr < nr_mem_sections ; nr++) { > > if ((sec_addr = valid_section_nr(nr))) { > > - coded_mem_map = section_mem_map_addr(sec_addr); > > + coded_mem_map = section_mem_map_addr(sec_addr, > > 0); > > mem_map = sparse_decode_mem_map(coded_mem_map, > > nr); > > end_mem_map = mem_map + (PAGES_PER_SECTION() * SIZE(page)); > > > > @@ -16354,8 +16355,10 @@ dump_memory_nodes(int initialize) > > vt->numnodes = n; > > } > > > > - if (IS_SPARSEMEM()) > > + if (IS_SPARSEMEM()) { > > dump_mem_sections(initialize); > > + dump_memory_blocks(initialize); > > + } > > } > > > > /* > > @@ -17140,7 +17143,7 @@ section_has_mem_map(ulong addr) > > } > > > > ulong > > -section_mem_map_addr(ulong addr) > > +section_mem_map_addr(ulong addr, int raw) > > { > > char *mem_section; > > ulong map; > > @@ -17148,7 +17151,8 @@ section_mem_map_addr(ulong addr) > > if ((mem_section = read_mem_section(addr))) { > > map = ULONG(mem_section + > > OFFSET(mem_section_section_mem_map)); > > - map &= SECTION_MAP_MASK; > > + if (!raw) > > + map &= SECTION_MAP_MASK; > > return map; > > } > > return 0; > > @@ -17179,7 +17183,7 @@ pfn_to_map(ulong pfn) > > > > if (section_has_mem_map(section)) { > > page_offset = pfn - section_nr_to_pfn(section_nr); > > - coded_mem_map = section_mem_map_addr(section); > > + coded_mem_map = section_mem_map_addr(section, 0); > > mem_map = sparse_decode_mem_map(coded_mem_map, section_nr) + > > (page_offset * SIZE(page)); > > return mem_map; > > @@ -17188,16 +17192,33 @@ pfn_to_map(ulong pfn) > > return 0; > > } > > > > +static void > > +fill_mem_section_state(ulong state, char *buf) > > +{ > > + int bufidx = 0; > > + > > + memset(buf, 0, sizeof(*buf) * BUFSIZE); > > + > > + if (state & SECTION_MARKED_PRESENT) > > + bufidx += sprintf(buf + bufidx, "%s", "P"); > > + if (state & SECTION_HAS_MEM_MAP) > > + bufidx += sprintf(buf + bufidx, "%s", "M"); > > + if (state & SECTION_IS_ONLINE) > > + bufidx += sprintf(buf + bufidx, "%s", "O"); > > +} > > + > > void > > dump_mem_sections(int initialize) > > { > > ulong nr, max, addr; > > ulong nr_mem_sections; > > ulong coded_mem_map, mem_map, pfn; > > + char statebuf[BUFSIZE]; > > char buf1[BUFSIZE]; > > char buf2[BUFSIZE]; > > char buf3[BUFSIZE]; > > char buf4[BUFSIZE]; > > + char buf5[BUFSIZE]; > > > > nr_mem_sections = NR_MEM_SECTIONS(); > > > > @@ -17212,19 +17233,23 @@ dump_mem_sections(int initialize) > > > > fprintf(fp, "\n"); > > pad_line(fp, BITS32() ? 59 : 67, '-'); > > - fprintf(fp, "\n\nNR %s %s %s PFN\n", > > + fprintf(fp, "\n\nNR %s %s %s %s PFN\n", > > mkstring(buf1, VADDR_PRLEN, CENTER|LJUST, "SECTION"), > > mkstring(buf2, MAX(VADDR_PRLEN,strlen("CODED_MEM_MAP")), > > CENTER|LJUST, "CODED_MEM_MAP"), > > - mkstring(buf3, VADDR_PRLEN, CENTER|LJUST, "MEM_MAP")); > > + mkstring(buf3, VADDR_PRLEN, CENTER|LJUST, "MEM_MAP"), > > + mkstring(buf4, strlen("STATE"), CENTER, "STATE")); > > > > for (nr = 0; nr < nr_mem_sections ; nr++) { > > if ((addr = valid_section_nr(nr))) { > > - coded_mem_map = section_mem_map_addr(addr); > > + coded_mem_map = section_mem_map_addr(addr, 0); > > mem_map = sparse_decode_mem_map(coded_mem_map,nr); > > pfn = section_nr_to_pfn(nr); > > + fill_mem_section_state(section_mem_map_addr(addr, 1), > > + statebuf); > > > > - fprintf(fp, "%2ld %s %s %s %s\n", > > + > > + fprintf(fp, "%2ld %s %s %s %s %s\n", > > nr, > > mkstring(buf1, VADDR_PRLEN, > > CENTER|LONG_HEX, MKSTR(addr)), > > @@ -17233,15 +17258,248 @@ dump_mem_sections(int initialize) > > CENTER|LONG_HEX|RJUST, MKSTR(coded_mem_map)), > > mkstring(buf3, VADDR_PRLEN, > > CENTER|LONG_HEX|RJUST, MKSTR(mem_map)), > > + mkstring(buf4, strlen("STATE"), CENTER, statebuf), > > pc->output_radix == 10 ? > > - mkstring(buf4, VADDR_PRLEN, > > + mkstring(buf5, VADDR_PRLEN, > > LONG_DEC|LJUST, MKSTR(pfn)) : > > - mkstring(buf4, VADDR_PRLEN, > > + mkstring(buf5, VADDR_PRLEN, > > LONG_HEX|LJUST, MKSTR(pfn))); > > } > > } > > } > > > > +#define MEM_ONLINE (1<<0) > > +#define MEM_GOING_OFFLINE (1<<1) > > +#define MEM_OFFLINE (1<<2) > > +#define MEM_GOING_ONLINE (1<<3) > > +#define MEM_CANCEL_ONLINE (1<<4) > > +#define MEM_CANCEL_OFFLINE (1<<5) > > + > > +static void > > +fill_memory_block_state(ulong memblock, char *buf) > > +{ > > + ulong state; > > + > > + memset(buf, 0, sizeof(*buf) * BUFSIZE); > > + > > + readmem(memblock + OFFSET(memory_block_state), KVADDR, &state, > > + sizeof(void *), "memory_block state", FAULT_ON_ERROR); > > + > > + switch (state) { > > + case MEM_ONLINE: > > + sprintf(buf, "%s", "ONLINE"); > > + break; > > + case MEM_GOING_OFFLINE: > > + sprintf(buf, "%s", "GOING_OFFLINE"); > > + break; > > + case MEM_OFFLINE: > > + sprintf(buf, "%s", "OFFLINE"); > > + break; > > + case MEM_GOING_ONLINE: > > + sprintf(buf, "%s", "GOING_ONLINE"); > > + break; > > + case MEM_CANCEL_ONLINE: > > + sprintf(buf, "%s", "CANCEL_ONLINE"); > > + break; > > + case MEM_CANCEL_OFFLINE: > > + sprintf(buf, "%s", "CANCEL_OFFLINE"); > > + break; > > + default: > > + sprintf(buf, "%s", "UNKNOWN"); > > + } > > +} > > + > > +static ulong > > +pfn_to_phys(ulong pfn) > > +{ > > + return pfn << PAGE_SHIFT; > > +} > > + > > +static void > > +fill_memory_block_name(ulong memblock, char *name) > > +{ > > + ulong kobj, value; > > + > > + memset(name, 0, sizeof(*name) * BUFSIZE); > > + > > + kobj = memblock + OFFSET(memory_block_dev) + OFFSET(device_kobj); > > + > > + readmem(kobj + OFFSET(kobject_name), > > + KVADDR, &value, sizeof(void *), "kobject name", > > + FAULT_ON_ERROR); > > + > > + read_string(value, name, BUFSIZE-1); > > +} > > + > > +static void > > +fill_memory_block_srange(ulong start_sec, ulong end_sec, char *srange) > > +{ > > + memset(srange, 0, sizeof(*srange) * BUFSIZE); > > + > > + if (start_sec == end_sec) > > + sprintf(srange, "%lu", start_sec); > > + else > > + sprintf(srange, "%lu-%lu", start_sec, end_sec); > > +} > > + > > +static void > > +print_memory_block(ulong memory_block) > > +{ > > + ulong start_sec, end_sec, start_pfn, end_pfn, nid; > > + char statebuf[BUFSIZE]; > > + char srangebuf[BUFSIZE]; > > + char name[BUFSIZE]; > > + char buf1[BUFSIZE]; > > + char buf2[BUFSIZE]; > > + char buf3[BUFSIZE]; > > + char buf4[BUFSIZE]; > > + char buf5[BUFSIZE]; > > + char buf6[BUFSIZE]; > > + char buf7[BUFSIZE]; > > + > > + readmem(memory_block + OFFSET(memory_block_start_section_nr), KVADDR, > > + &start_sec, sizeof(void *), "memory_block start_section_nr", > > + FAULT_ON_ERROR); > > + readmem(memory_block + OFFSET(memory_block_end_section_nr), KVADDR, > > + &end_sec, sizeof(void *), "memory_block end_section_nr", > > + FAULT_ON_ERROR); > > + > > + start_pfn = section_nr_to_pfn(start_sec); > > + end_pfn = section_nr_to_pfn(end_sec + 1); > > + fill_memory_block_state(memory_block, statebuf); > > + fill_memory_block_name(memory_block, name); > > + fill_memory_block_srange(start_sec, end_sec, srangebuf); > > + > > + if (MEMBER_EXISTS("memory_block", "nid")) { > > + readmem(memory_block + OFFSET(memory_block_nid), KVADDR, &nid, > > + sizeof(void *), "memory_block nid", FAULT_ON_ERROR); > > + fprintf(fp, " %s %s %s - %s %s %s %s\n", > > + mkstring(buf1, VADDR_PRLEN, LJUST|LONG_HEX, > > + MKSTR(memory_block)), > > + mkstring(buf2, 12, CENTER, name), > > + mkstring(buf3, PADDR_PRLEN, RJUST|LONG_HEX, > > + MKSTR(pfn_to_phys(start_pfn))), > > + mkstring(buf4, PADDR_PRLEN, LJUST|LONG_HEX, > > + MKSTR(pfn_to_phys(end_pfn) - 1)), > > + mkstring(buf5, strlen("NODE"), CENTER|LONG_DEC, > > + MKSTR(nid)), > > + mkstring(buf6, strlen("CANCEL_OFFLINE"), LJUST, > > + statebuf), > > + mkstring(buf7, 12, LJUST, srangebuf)); > > + } else > > + fprintf(fp, " %s %s %s - %s %s %s\n", > > + mkstring(buf1, VADDR_PRLEN, LJUST|LONG_HEX, > > + MKSTR(memory_block)), > > + mkstring(buf2, 10, CENTER, name), > > + mkstring(buf3, PADDR_PRLEN, RJUST|LONG_HEX, > > + MKSTR(pfn_to_phys(start_pfn))), > > + mkstring(buf4, PADDR_PRLEN, LJUST|LONG_HEX, > > + MKSTR(pfn_to_phys(end_pfn) - 1)), > > + mkstring(buf5, strlen("CANCEL_OFFLINE"), LJUST, > > + statebuf), > > + mkstring(buf6, 12, LJUST, srangebuf)); > > +} > > + > > +static void > > +init_memory_block_offset(void) > > +{ > > + MEMBER_OFFSET_INIT(bus_type_p, "bus_type", "p"); > > + MEMBER_OFFSET_INIT(subsys_private_klist_devices, > > + "subsys_private", "klist_devices"); > > + MEMBER_OFFSET_INIT(klist_k_list, "klist", "k_list"); > > + MEMBER_OFFSET_INIT(klist_node_n_node, "klist_node", "n_node"); > > + MEMBER_OFFSET_INIT(device_private_knode_bus, > > + "device_private", "knode_bus"); > > + MEMBER_OFFSET_INIT(device_private_device, "device_private", "device"); > > + MEMBER_OFFSET_INIT(memory_block_dev, "memory_block", "dev"); > > + MEMBER_OFFSET_INIT(memory_block_start_section_nr, > > + "memory_block", "start_section_nr"); > > + MEMBER_OFFSET_INIT(memory_block_end_section_nr, > > + "memory_block", "end_section_nr"); > > + MEMBER_OFFSET_INIT(memory_block_state, "memory_block", "state"); > > + if (MEMBER_EXISTS("memory_block", "nid")) > > + MEMBER_OFFSET_INIT(memory_block_nid, "memory_block", "nid"); > > +} > > + > > +static void > > +init_memory_block(struct list_data *ld, int *klistcnt, ulong **klistbuf) > > +{ > > + ulong memory_subsys = symbol_value("memory_subsys"); > > + ulong private, klist, start; > > + > > + init_memory_block_offset(); > > + > > + readmem(memory_subsys + OFFSET(bus_type_p), KVADDR, &private, > > + sizeof(void *), "memory_subsys.private", FAULT_ON_ERROR); > > + klist = private + OFFSET(subsys_private_klist_devices) + > > + OFFSET(klist_k_list); > > + BZERO(ld, sizeof(struct list_data)); > > + > > + readmem(klist, KVADDR, &start, > > + sizeof(void *), "klist klist", FAULT_ON_ERROR); > > + > > + ld->start = start; > > + ld->end = klist; > > + ld->list_head_offset = OFFSET(klist_node_n_node) + > > + OFFSET(device_private_knode_bus); > > + hq_open(); > > + *klistcnt = do_list(ld); > > + *klistbuf = (ulong *)GETBUF(*klistcnt * sizeof(ulong)); > > + *klistcnt = retrieve_list(*klistbuf, *klistcnt); > > + hq_close(); > > +} > > + > > +void > > +dump_memory_blocks(int initialize) > > +{ > > + ulong memory_block, device; > > + ulong *klistbuf; > > + int klistcnt, i; > > + struct list_data list_data; > > + char mb_hdr[BUFSIZE]; > > + char buf1[BUFSIZE]; > > + char buf2[BUFSIZE]; > > + char buf3[BUFSIZE]; > > + char buf4[BUFSIZE]; > > + char buf5[BUFSIZE]; > > + char buf6[BUFSIZE]; > > + > > + if ((!STRUCT_EXISTS("memory_block")) || > > + (!symbol_exists("memory_subsys"))) > > + return; > > + > > + if (initialize) > > + return; > > + > > + init_memory_block(&list_data, &klistcnt, &klistbuf); > > + > > + if (MEMBER_EXISTS("memory_block", "nid")) > > + sprintf(mb_hdr, "\n%s %s %s %s %s %s\n", > > + mkstring(buf1, VADDR_PRLEN, CENTER|LJUST, "MEM_BLOCK"), > > + mkstring(buf2, 10, CENTER, "NAME"), > > + mkstring(buf3, PADDR_PRLEN*2 + 2, CENTER, "PHYSICAL RANGE"), > > + mkstring(buf4, strlen("NODE"), CENTER, "NODE"), > > + mkstring(buf5, strlen("CANCEL_OFFLINE"), LJUST, "STATE"), > > + mkstring(buf6, 12, LJUST, "SECTIONS")); > > + else > > + sprintf(mb_hdr, "\n%s %s %s %s %s\n", > > + mkstring(buf1, VADDR_PRLEN, CENTER|LJUST, "MEM_BLOCK"), > > + mkstring(buf2, 10, CENTER, "NAME"), > > + mkstring(buf3, PADDR_PRLEN*2, CENTER, "PHYSICAL RANGE"), > > + mkstring(buf4, strlen("CANCEL_OFFLINE"), LJUST, "STATE"), > > + mkstring(buf5, 12, LJUST, "SECTIONS")); > > + fprintf(fp, "%s", mb_hdr); > > + > > + for (i = 0; i < klistcnt; i++) { > > + readmem(klistbuf[i] + OFFSET(device_private_device), KVADDR, > > + &device, sizeof(void *), "device_private device", > > + FAULT_ON_ERROR); > > + memory_block = device - OFFSET(memory_block_dev); > > + print_memory_block(memory_block); > > + } > > + FREEBUF(klistbuf); > > +} > > + > > void > > list_mem_sections(void) > > { > > @@ -17251,7 +17509,7 @@ list_mem_sections(void) > > > > for (nr = 0; nr <= nr_mem_sections ; nr++) { > > if ((addr = valid_section_nr(nr))) { > > - coded_mem_map = section_mem_map_addr(addr); > > + coded_mem_map = section_mem_map_addr(addr, 0); > > fprintf(fp, > > "nr=%ld section = %lx coded_mem_map=%lx pfn=%ld mem_map=%lx\n", > > nr, > > diff --git a/symbols.c b/symbols.c > > index cb2174b..c5aab14 100644 > > --- a/symbols.c > > +++ b/symbols.c > > @@ -9938,6 +9938,18 @@ dump_offset_table(char *spec, ulong makestruct) > > OFFSET(tss_struct_ist)); > > fprintf(fp, " mem_section_section_mem_map: %ld\n", > > OFFSET(mem_section_section_mem_map)); > > + fprintf(fp, " mem_section_pageblock_flags: %ld\n", > > + OFFSET(mem_section_pageblock_flags)); > > + fprintf(fp, " memory_block_dev: %ld\n", > > + OFFSET(memory_block_dev)); > > + fprintf(fp, " memory_block_nid: %ld\n", > > + OFFSET(memory_block_nid)); > > + fprintf(fp, " memory_block_start_section_nr: %ld\n", > > + OFFSET(memory_block_start_section_nr)); > > + fprintf(fp, " memory_block_end_section_nr: %ld\n", > > + OFFSET(memory_block_end_section_nr)); > > + fprintf(fp, " memory_block_state: %ld\n", > > + OFFSET(memory_block_state)); > > > > fprintf(fp, " vcpu_guest_context_user_regs: %ld\n", > > OFFSET(vcpu_guest_context_user_regs)); > > @@ -10031,6 +10043,8 @@ dump_offset_table(char *spec, ulong makestruct) > > OFFSET(unwind_idx_addr)); > > fprintf(fp, " unwind_idx_insn: %ld\n", > > OFFSET(unwind_idx_insn)); > > + fprintf(fp, " bus_type_p: %ld\n", > > + OFFSET(bus_type_p)); > > fprintf(fp, " class_devices: %ld\n", > > OFFSET(class_devices)); > > fprintf(fp, " class_p: %ld\n", > > @@ -10041,6 +10055,10 @@ dump_offset_table(char *spec, ulong makestruct) > > OFFSET(device_knode_class)); > > fprintf(fp, " device_node: %ld\n", > > OFFSET(device_node)); > > + fprintf(fp, " device_private_device: %ld\n", > > + OFFSET(device_private_device)); > > + fprintf(fp, " device_private_knode_bus: %ld\n", > > + OFFSET(device_private_knode_bus)); > > fprintf(fp, " gendisk_dev: %ld\n", > > OFFSET(gendisk_dev)); > > fprintf(fp, " gendisk_kobj: %ld\n", > > -- > > 2.19.0 > > > > -- > > Crash-utility mailing list > > Crash-utility@xxxxxxxxxx > > https://www.redhat.com/mailman/listinfo/crash-utility > > > > -- > Crash-utility mailing list > Crash-utility@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/crash-utility > -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
