Lines Matching +full:no +full:- +full:dump +full:- +full:oops
1 // SPDX-License-Identifier: GPL-2.0-only
3 * RAM Oops/Panic logger
34 "size of each dump done on oops/panic");
51 "start of reserved RAM used to store oops/panic logs");
60 "size of reserved RAM used to store oops/panic logs");
65 "memory type: 0=write-combined (default), 1=unbuffered, 2=cached");
67 static int ramoops_max_reason = -1;
70 "maximum reason for kmsg dump (default 2: Oops and Panic) ");
75 "if non-zero, the option enables ECC support and specifies "
79 static int ramoops_dump_oops = -1;
82 "(deprecated: use max_reason instead) set to 1 to dump oopses & panics, 0 to only dump panics");
85 struct persistent_ram_zone **dprzs; /* Oops dump zones */
113 struct ramoops_context *cxt = psi->data; in ramoops_pstore_open()
115 cxt->dump_read_cnt = 0; in ramoops_pstore_open()
116 cxt->console_read_cnt = 0; in ramoops_pstore_open()
117 cxt->ftrace_read_cnt = 0; in ramoops_pstore_open()
118 cxt->pmsg_read_cnt = 0; in ramoops_pstore_open()
137 if (prz->type == PSTORE_TYPE_DMESG) in ramoops_get_next_prz()
143 record->type = prz->type; in ramoops_get_next_prz()
144 record->id = id; in ramoops_get_next_prz()
155 if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lld.%lu-%c\n%n", in ramoops_read_kmsg_hdr()
156 (time64_t *)&time->tv_sec, &time->tv_nsec, &data_type, in ramoops_read_kmsg_hdr()
158 time->tv_nsec *= 1000; in ramoops_read_kmsg_hdr()
164 (time64_t *)&time->tv_sec, &time->tv_nsec, in ramoops_read_kmsg_hdr()
166 time->tv_nsec *= 1000; in ramoops_read_kmsg_hdr()
169 time->tv_sec = 0; in ramoops_read_kmsg_hdr()
170 time->tv_nsec = 0; in ramoops_read_kmsg_hdr()
185 struct ramoops_context *cxt = record->psi->data; in ramoops_pstore_read()
195 record->time.tv_sec = 0; in ramoops_pstore_read()
196 record->time.tv_nsec = 0; in ramoops_pstore_read()
197 record->compressed = false; in ramoops_pstore_read()
200 while (cxt->dump_read_cnt < cxt->max_dump_cnt && !prz) { in ramoops_pstore_read()
201 prz = ramoops_get_next_prz(cxt->dprzs, cxt->dump_read_cnt++, in ramoops_pstore_read()
206 &record->time, in ramoops_pstore_read()
207 &record->compressed); in ramoops_pstore_read()
208 /* Clear and skip this DMESG record if it has no valid header */ in ramoops_pstore_read()
216 if (!prz_ok(prz) && !cxt->console_read_cnt++) in ramoops_pstore_read()
217 prz = ramoops_get_next_prz(&cxt->cprz, 0 /* single */, record); in ramoops_pstore_read()
219 if (!prz_ok(prz) && !cxt->pmsg_read_cnt++) in ramoops_pstore_read()
220 prz = ramoops_get_next_prz(&cxt->mprz, 0 /* single */, record); in ramoops_pstore_read()
224 if (!(cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) && in ramoops_pstore_read()
225 !cxt->ftrace_read_cnt++) { in ramoops_pstore_read()
226 prz = ramoops_get_next_prz(cxt->fprzs, 0 /* single */, in ramoops_pstore_read()
231 * per-cpu records including metadata and ecc info. in ramoops_pstore_read()
238 return -ENOMEM; in ramoops_pstore_read()
242 while (cxt->ftrace_read_cnt < cxt->max_ftrace_cnt) { in ramoops_pstore_read()
243 prz_next = ramoops_get_next_prz(cxt->fprzs, in ramoops_pstore_read()
244 cxt->ftrace_read_cnt++, record); in ramoops_pstore_read()
249 tmp_prz->ecc_info = prz_next->ecc_info; in ramoops_pstore_read()
250 tmp_prz->corrected_bytes += in ramoops_pstore_read()
251 prz_next->corrected_bytes; in ramoops_pstore_read()
252 tmp_prz->bad_blocks += prz_next->bad_blocks; in ramoops_pstore_read()
255 &tmp_prz->old_log, in ramoops_pstore_read()
256 &tmp_prz->old_log_size, in ramoops_pstore_read()
257 prz_next->old_log, in ramoops_pstore_read()
258 prz_next->old_log_size); in ramoops_pstore_read()
262 record->id = 0; in ramoops_pstore_read()
271 size = persistent_ram_old_size(prz) - header_length; in ramoops_pstore_read()
274 record->ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0); in ramoops_pstore_read()
276 record->buf = kvzalloc(size + record->ecc_notice_size + 1, GFP_KERNEL); in ramoops_pstore_read()
277 if (record->buf == NULL) { in ramoops_pstore_read()
278 size = -ENOMEM; in ramoops_pstore_read()
282 memcpy(record->buf, (char *)persistent_ram_old(prz) + header_length, in ramoops_pstore_read()
285 persistent_ram_ecc_string(prz, record->buf + size, in ramoops_pstore_read()
286 record->ecc_notice_size + 1); in ramoops_pstore_read()
290 kvfree(prz->old_log); in ramoops_pstore_read()
300 char hdr[36]; /* "===="(4), %lld(20), "."(1), %06lu(6), "-%c\n"(3) */ in ramoops_write_kmsg_hdr()
304 RAMOOPS_KERNMSG_HDR "%lld.%06lu-%c\n", in ramoops_write_kmsg_hdr()
305 (time64_t)record->time.tv_sec, in ramoops_write_kmsg_hdr()
306 record->time.tv_nsec / 1000, in ramoops_write_kmsg_hdr()
307 record->compressed ? 'C' : 'D'); in ramoops_write_kmsg_hdr()
315 struct ramoops_context *cxt = record->psi->data; in ramoops_pstore_write()
319 if (record->type == PSTORE_TYPE_CONSOLE) { in ramoops_pstore_write()
320 if (!cxt->cprz) in ramoops_pstore_write()
321 return -ENOMEM; in ramoops_pstore_write()
322 persistent_ram_write(cxt->cprz, record->buf, record->size); in ramoops_pstore_write()
324 } else if (record->type == PSTORE_TYPE_FTRACE) { in ramoops_pstore_write()
327 if (!cxt->fprzs) in ramoops_pstore_write()
328 return -ENOMEM; in ramoops_pstore_write()
330 * Choose zone by if we're using per-cpu buffers. in ramoops_pstore_write()
332 if (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) in ramoops_pstore_write()
337 persistent_ram_write(cxt->fprzs[zonenum], record->buf, in ramoops_pstore_write()
338 record->size); in ramoops_pstore_write()
340 } else if (record->type == PSTORE_TYPE_PMSG) { in ramoops_pstore_write()
342 return -EINVAL; in ramoops_pstore_write()
345 if (record->type != PSTORE_TYPE_DMESG) in ramoops_pstore_write()
346 return -EINVAL; in ramoops_pstore_write()
349 * We could filter on record->reason here if we wanted to (which in ramoops_pstore_write()
364 if (record->part != 1) in ramoops_pstore_write()
365 return -ENOSPC; in ramoops_pstore_write()
367 if (!cxt->dprzs) in ramoops_pstore_write()
368 return -ENOSPC; in ramoops_pstore_write()
370 prz = cxt->dprzs[cxt->dump_write_cnt]; in ramoops_pstore_write()
373 * Since this is a new crash dump, we need to reset the buffer in in ramoops_pstore_write()
374 * case it still has an old dump present. Without this, the new dump in ramoops_pstore_write()
376 * to check dump file contents. Specifically, ramoops_read_kmsg_hdr() in ramoops_pstore_write()
377 * expects to find a dump header in the beginning of buffer data, so in ramoops_pstore_write()
386 return -ENOMEM; in ramoops_pstore_write()
388 size = record->size; in ramoops_pstore_write()
389 if (size + hlen > prz->buffer_size) in ramoops_pstore_write()
390 size = prz->buffer_size - hlen; in ramoops_pstore_write()
391 persistent_ram_write(prz, record->buf, size); in ramoops_pstore_write()
393 cxt->dump_write_cnt = (cxt->dump_write_cnt + 1) % cxt->max_dump_cnt; in ramoops_pstore_write()
401 if (record->type == PSTORE_TYPE_PMSG) { in ramoops_pstore_write_user()
402 struct ramoops_context *cxt = record->psi->data; in ramoops_pstore_write_user()
404 if (!cxt->mprz) in ramoops_pstore_write_user()
405 return -ENOMEM; in ramoops_pstore_write_user()
406 return persistent_ram_write_user(cxt->mprz, buf, record->size); in ramoops_pstore_write_user()
409 return -EINVAL; in ramoops_pstore_write_user()
414 struct ramoops_context *cxt = record->psi->data; in ramoops_pstore_erase()
417 switch (record->type) { in ramoops_pstore_erase()
419 if (record->id >= cxt->max_dump_cnt) in ramoops_pstore_erase()
420 return -EINVAL; in ramoops_pstore_erase()
421 prz = cxt->dprzs[record->id]; in ramoops_pstore_erase()
424 prz = cxt->cprz; in ramoops_pstore_erase()
427 if (record->id >= cxt->max_ftrace_cnt) in ramoops_pstore_erase()
428 return -EINVAL; in ramoops_pstore_erase()
429 prz = cxt->fprzs[record->id]; in ramoops_pstore_erase()
432 prz = cxt->mprz; in ramoops_pstore_erase()
435 return -EINVAL; in ramoops_pstore_erase()
461 persistent_ram_free(&cxt->mprz); in ramoops_free_przs()
464 persistent_ram_free(&cxt->cprz); in ramoops_free_przs()
466 /* Free dump PRZs */ in ramoops_free_przs()
467 if (cxt->dprzs) { in ramoops_free_przs()
468 for (i = 0; i < cxt->max_dump_cnt; i++) in ramoops_free_przs()
469 persistent_ram_free(&cxt->dprzs[i]); in ramoops_free_przs()
471 kfree(cxt->dprzs); in ramoops_free_przs()
472 cxt->dprzs = NULL; in ramoops_free_przs()
473 cxt->max_dump_cnt = 0; in ramoops_free_przs()
477 if (cxt->fprzs) { in ramoops_free_przs()
478 for (i = 0; i < cxt->max_ftrace_cnt; i++) in ramoops_free_przs()
479 persistent_ram_free(&cxt->fprzs[i]); in ramoops_free_przs()
480 kfree(cxt->fprzs); in ramoops_free_przs()
481 cxt->fprzs = NULL; in ramoops_free_przs()
482 cxt->max_ftrace_cnt = 0; in ramoops_free_przs()
493 int err = -ENOMEM; in ramoops_init_przs()
527 if (*paddr + mem_sz - cxt->phys_addr > cxt->size) { in ramoops_init_przs()
528 dev_err(dev, "no room for %s mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n", in ramoops_init_przs()
531 cxt->size, (unsigned long long)cxt->phys_addr); in ramoops_init_przs()
553 name, i, *cnt - 1); in ramoops_init_przs()
555 &cxt->ecc_info, in ramoops_init_przs()
556 cxt->memtype, flags, label); in ramoops_init_przs()
565 i--; in ramoops_init_przs()
573 prz_ar[i]->type = pstore_name_to_type(name); in ramoops_init_przs()
594 if (*paddr + sz - cxt->phys_addr > cxt->size) { in ramoops_init_prz()
595 dev_err(dev, "no room for %s mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n", in ramoops_init_prz()
597 cxt->size, (unsigned long long)cxt->phys_addr); in ramoops_init_prz()
598 return -ENOMEM; in ramoops_init_prz()
602 *prz = persistent_ram_new(*paddr, sz, sig, &cxt->ecc_info, in ramoops_init_prz()
603 cxt->memtype, PRZ_FLAG_ZAP_OLD, label); in ramoops_init_prz()
614 (*prz)->type = pstore_name_to_type(name); in ramoops_init_prz()
627 ret = of_property_read_u32(pdev->dev.of_node, propname, &val32); in ramoops_parse_dt_u32()
628 if (ret == -EINVAL) { in ramoops_parse_dt_u32()
632 dev_err(&pdev->dev, "failed to parse property %s: %d\n", in ramoops_parse_dt_u32()
639 dev_err(&pdev->dev, "%s %u > INT_MAX\n", propname, val32); in ramoops_parse_dt_u32()
640 return -EOVERFLOW; in ramoops_parse_dt_u32()
650 struct device_node *of_node = pdev->dev.of_node; in ramoops_parse_dt()
656 dev_dbg(&pdev->dev, "using Device Tree\n"); in ramoops_parse_dt()
660 dev_err(&pdev->dev, in ramoops_parse_dt()
661 "failed to locate DT /reserved-memory resource\n"); in ramoops_parse_dt()
662 return -EINVAL; in ramoops_parse_dt()
665 pdata->mem_size = resource_size(res); in ramoops_parse_dt()
666 pdata->mem_address = res->start; in ramoops_parse_dt()
671 pdata->mem_type = of_property_read_bool(of_node, "unbuffered"); in ramoops_parse_dt()
673 * Setting "no-dump-oops" is deprecated and will be ignored if in ramoops_parse_dt()
676 if (of_property_read_bool(of_node, "no-dump-oops")) in ramoops_parse_dt()
677 pdata->max_reason = KMSG_DUMP_PANIC; in ramoops_parse_dt()
679 pdata->max_reason = KMSG_DUMP_OOPS; in ramoops_parse_dt()
689 parse_u32("mem-type", pdata->mem_type, pdata->mem_type); in ramoops_parse_dt()
690 parse_u32("record-size", pdata->record_size, 0); in ramoops_parse_dt()
691 parse_u32("console-size", pdata->console_size, 0); in ramoops_parse_dt()
692 parse_u32("ftrace-size", pdata->ftrace_size, 0); in ramoops_parse_dt()
693 parse_u32("pmsg-size", pdata->pmsg_size, 0); in ramoops_parse_dt()
694 parse_u32("ecc-size", pdata->ecc_info.ecc_size, 0); in ramoops_parse_dt()
695 parse_u32("flags", pdata->flags, 0); in ramoops_parse_dt()
696 parse_u32("max-reason", pdata->max_reason, pdata->max_reason); in ramoops_parse_dt()
708 * we're not a child of "reserved-memory" and mimicking the in ramoops_parse_dt()
712 if (!of_node_name_eq(parent_node, "reserved-memory") && in ramoops_parse_dt()
713 !pdata->console_size && !pdata->ftrace_size && in ramoops_parse_dt()
714 !pdata->pmsg_size && !pdata->ecc_info.ecc_size) { in ramoops_parse_dt()
715 pdata->console_size = pdata->record_size; in ramoops_parse_dt()
716 pdata->pmsg_size = pdata->record_size; in ramoops_parse_dt()
725 struct device *dev = &pdev->dev; in ramoops_probe()
726 struct ramoops_platform_data *pdata = dev->platform_data; in ramoops_probe()
731 int err = -EINVAL; in ramoops_probe()
737 if (cxt->max_dump_cnt) { in ramoops_probe()
754 err = -EINVAL; in ramoops_probe()
758 if (!pdata->mem_size || (!pdata->record_size && !pdata->console_size && in ramoops_probe()
759 !pdata->ftrace_size && !pdata->pmsg_size)) { in ramoops_probe()
761 "non-zero\n"); in ramoops_probe()
762 err = -EINVAL; in ramoops_probe()
766 if (pdata->record_size && !is_power_of_2(pdata->record_size)) in ramoops_probe()
767 pdata->record_size = rounddown_pow_of_two(pdata->record_size); in ramoops_probe()
768 if (pdata->console_size && !is_power_of_2(pdata->console_size)) in ramoops_probe()
769 pdata->console_size = rounddown_pow_of_two(pdata->console_size); in ramoops_probe()
770 if (pdata->ftrace_size && !is_power_of_2(pdata->ftrace_size)) in ramoops_probe()
771 pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size); in ramoops_probe()
772 if (pdata->pmsg_size && !is_power_of_2(pdata->pmsg_size)) in ramoops_probe()
773 pdata->pmsg_size = rounddown_pow_of_two(pdata->pmsg_size); in ramoops_probe()
775 cxt->size = pdata->mem_size; in ramoops_probe()
776 cxt->phys_addr = pdata->mem_address; in ramoops_probe()
777 cxt->memtype = pdata->mem_type; in ramoops_probe()
778 cxt->record_size = pdata->record_size; in ramoops_probe()
779 cxt->console_size = pdata->console_size; in ramoops_probe()
780 cxt->ftrace_size = pdata->ftrace_size; in ramoops_probe()
781 cxt->pmsg_size = pdata->pmsg_size; in ramoops_probe()
782 cxt->flags = pdata->flags; in ramoops_probe()
783 cxt->ecc_info = pdata->ecc_info; in ramoops_probe()
785 paddr = cxt->phys_addr; in ramoops_probe()
787 dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size in ramoops_probe()
788 - cxt->pmsg_size; in ramoops_probe()
789 err = ramoops_init_przs("dmesg", dev, cxt, &cxt->dprzs, &paddr, in ramoops_probe()
790 dump_mem_sz, cxt->record_size, in ramoops_probe()
791 &cxt->max_dump_cnt, 0, 0); in ramoops_probe()
795 err = ramoops_init_prz("console", dev, cxt, &cxt->cprz, &paddr, in ramoops_probe()
796 cxt->console_size, 0); in ramoops_probe()
800 err = ramoops_init_prz("pmsg", dev, cxt, &cxt->mprz, &paddr, in ramoops_probe()
801 cxt->pmsg_size, 0); in ramoops_probe()
805 cxt->max_ftrace_cnt = (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) in ramoops_probe()
808 err = ramoops_init_przs("ftrace", dev, cxt, &cxt->fprzs, &paddr, in ramoops_probe()
809 cxt->ftrace_size, -1, in ramoops_probe()
810 &cxt->max_ftrace_cnt, LINUX_VERSION_CODE, in ramoops_probe()
811 (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) in ramoops_probe()
816 cxt->pstore.data = cxt; in ramoops_probe()
823 cxt->pstore.flags = 0; in ramoops_probe()
824 if (cxt->max_dump_cnt) { in ramoops_probe()
825 cxt->pstore.flags |= PSTORE_FLAGS_DMESG; in ramoops_probe()
826 cxt->pstore.max_reason = pdata->max_reason; in ramoops_probe()
828 if (cxt->console_size) in ramoops_probe()
829 cxt->pstore.flags |= PSTORE_FLAGS_CONSOLE; in ramoops_probe()
830 if (cxt->max_ftrace_cnt) in ramoops_probe()
831 cxt->pstore.flags |= PSTORE_FLAGS_FTRACE; in ramoops_probe()
832 if (cxt->pmsg_size) in ramoops_probe()
833 cxt->pstore.flags |= PSTORE_FLAGS_PMSG; in ramoops_probe()
840 if (cxt->pstore.flags & PSTORE_FLAGS_DMESG) { in ramoops_probe()
841 cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size; in ramoops_probe()
842 cxt->pstore.buf = kvzalloc(cxt->pstore.bufsize, GFP_KERNEL); in ramoops_probe()
843 if (!cxt->pstore.buf) { in ramoops_probe()
844 pr_err("cannot allocate pstore crash dump buffer\n"); in ramoops_probe()
845 err = -ENOMEM; in ramoops_probe()
850 err = pstore_register(&cxt->pstore); in ramoops_probe()
860 mem_size = pdata->mem_size; in ramoops_probe()
861 mem_address = pdata->mem_address; in ramoops_probe()
862 record_size = pdata->record_size; in ramoops_probe()
863 ramoops_max_reason = pdata->max_reason; in ramoops_probe()
864 ramoops_console_size = pdata->console_size; in ramoops_probe()
865 ramoops_pmsg_size = pdata->pmsg_size; in ramoops_probe()
866 ramoops_ftrace_size = pdata->ftrace_size; in ramoops_probe()
869 cxt->size, (unsigned long long)cxt->phys_addr, in ramoops_probe()
870 cxt->ecc_info.ecc_size); in ramoops_probe()
875 kvfree(cxt->pstore.buf); in ramoops_probe()
877 cxt->pstore.bufsize = 0; in ramoops_probe()
888 pstore_unregister(&cxt->pstore); in ramoops_remove()
890 kvfree(cxt->pstore.buf); in ramoops_remove()
891 cxt->pstore.bufsize = 0; in ramoops_remove()
933 * parameters. If mem_size isn't set, then there are no module in ramoops_register_dummy()
953 else if (ramoops_dump_oops != -1) in ramoops_register_dummy()
967 dummy = platform_device_register_data(NULL, "ramoops", -1, in ramoops_register_dummy()
998 MODULE_DESCRIPTION("RAM Oops/Panic logger/driver");