diff options
Diffstat (limited to 'fs/pstore/ram.c')
| -rw-r--r-- | fs/pstore/ram.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 74f4111bd0da..1dd108e0cc60 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -45,6 +45,10 @@ static ulong ramoops_console_size = MIN_MEM_SIZE; module_param_named(console_size, ramoops_console_size, ulong, 0400); MODULE_PARM_DESC(console_size, "size of kernel console log"); +static ulong ramoops_ftrace_size = MIN_MEM_SIZE; +module_param_named(ftrace_size, ramoops_ftrace_size, ulong, 0400); +MODULE_PARM_DESC(ftrace_size, "size of ftrace log"); + static ulong mem_address; module_param(mem_address, ulong, 0400); MODULE_PARM_DESC(mem_address, @@ -70,16 +74,19 @@ MODULE_PARM_DESC(ramoops_ecc, struct ramoops_context { struct persistent_ram_zone **przs; struct persistent_ram_zone *cprz; + struct persistent_ram_zone *fprz; phys_addr_t phys_addr; unsigned long size; size_t record_size; size_t console_size; + size_t ftrace_size; int dump_oops; int ecc_size; unsigned int max_dump_cnt; unsigned int dump_write_cnt; unsigned int dump_read_cnt; unsigned int console_read_cnt; + unsigned int ftrace_read_cnt; struct pstore_info pstore; }; @@ -138,6 +145,9 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, prz = ramoops_get_next_prz(&cxt->cprz, &cxt->console_read_cnt, 1, id, type, PSTORE_TYPE_CONSOLE, 0); if (!prz) + prz = ramoops_get_next_prz(&cxt->fprz, &cxt->ftrace_read_cnt, + 1, id, type, PSTORE_TYPE_FTRACE, 0); + if (!prz) return 0; /* TODO(kees): Bogus time for the moment. */ @@ -186,6 +196,11 @@ static int ramoops_pstore_write_buf(enum pstore_type_id type, return -ENOMEM; persistent_ram_write(cxt->cprz, buf, size); return 0; + } else if (type == PSTORE_TYPE_FTRACE) { + if (!cxt->fprz) + return -ENOMEM; + persistent_ram_write(cxt->fprz, buf, size); + return 0; } if (type != PSTORE_TYPE_DMESG) @@ -235,6 +250,9 @@ static int ramoops_pstore_erase(enum pstore_type_id type, u64 id, case PSTORE_TYPE_CONSOLE: prz = cxt->cprz; break; + case PSTORE_TYPE_FTRACE: + prz = cxt->fprz; + break; default: return -EINVAL; } @@ -348,7 +366,8 @@ static int __devinit ramoops_probe(struct platform_device *pdev) if (cxt->max_dump_cnt) goto fail_out; - if (!pdata->mem_size || (!pdata->record_size && !pdata->console_size)) { + if (!pdata->mem_size || (!pdata->record_size && !pdata->console_size && + !pdata->ftrace_size)) { pr_err("The memory size and the record/console size must be " "non-zero\n"); goto fail_out; @@ -357,18 +376,20 @@ static int __devinit ramoops_probe(struct platform_device *pdev) pdata->mem_size = rounddown_pow_of_two(pdata->mem_size); pdata->record_size = rounddown_pow_of_two(pdata->record_size); pdata->console_size = rounddown_pow_of_two(pdata->console_size); + pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size); cxt->dump_read_cnt = 0; cxt->size = pdata->mem_size; cxt->phys_addr = pdata->mem_address; cxt->record_size = pdata->record_size; cxt->console_size = pdata->console_size; + cxt->ftrace_size = pdata->ftrace_size; cxt->dump_oops = pdata->dump_oops; cxt->ecc_size = pdata->ecc_size; paddr = cxt->phys_addr; - dump_mem_sz = cxt->size - cxt->console_size; + dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size; err = ramoops_init_przs(dev, cxt, &paddr, dump_mem_sz); if (err) goto fail_out; @@ -377,9 +398,14 @@ static int __devinit ramoops_probe(struct platform_device *pdev) if (err) goto fail_init_cprz; - if (!cxt->przs && !cxt->cprz) { + err = ramoops_init_prz(dev, cxt, &cxt->fprz, &paddr, cxt->ftrace_size); + if (err) + goto fail_init_fprz; + + if (!cxt->przs && !cxt->cprz && !cxt->fprz) { pr_err("memory size too small, minimum is %lu\n", - cxt->console_size + cxt->record_size); + cxt->console_size + cxt->record_size + + cxt->ftrace_size); goto fail_cnt; } @@ -426,6 +452,8 @@ fail_clear: cxt->pstore.bufsize = 0; cxt->max_dump_cnt = 0; fail_cnt: + kfree(cxt->fprz); +fail_init_fprz: kfree(cxt->cprz); fail_init_cprz: ramoops_free_przs(cxt); @@ -480,6 +508,7 @@ static void ramoops_register_dummy(void) dummy_data->mem_address = mem_address; dummy_data->record_size = record_size; dummy_data->console_size = ramoops_console_size; + dummy_data->ftrace_size = ramoops_ftrace_size; dummy_data->dump_oops = dump_oops; /* * For backwards compatibility ramoops.ecc=1 means 16 bytes ECC |