diff options
Diffstat (limited to 'fs/pstore')
-rw-r--r-- | fs/pstore/platform.c | 5 | ||||
-rw-r--r-- | fs/pstore/ram.c | 7 | ||||
-rw-r--r-- | fs/pstore/ram_core.c | 18 |
3 files changed, 26 insertions, 4 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index d963ae7902f9..b9614db48b1d 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -385,6 +385,7 @@ void pstore_record_init(struct pstore_record *record, static void pstore_dump(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason) { + struct kmsg_dump_iter iter; unsigned long total = 0; const char *why; unsigned int part = 1; @@ -405,6 +406,8 @@ static void pstore_dump(struct kmsg_dumper *dumper, } } + kmsg_dump_rewind(&iter); + oopscount++; while (total < kmsg_bytes) { char *dst; @@ -435,7 +438,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, dst_size -= header_size; /* Write dump contents. */ - if (!kmsg_dump_get_buffer(dumper, true, dst + header_size, + if (!kmsg_dump_get_buffer(&iter, true, dst + header_size, dst_size, &dump_size)) break; diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index ca6d8a867285..fefe3d391d3a 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -56,7 +56,7 @@ MODULE_PARM_DESC(mem_size, static unsigned int mem_type; module_param(mem_type, uint, 0400); MODULE_PARM_DESC(mem_type, - "set to 1 to try to use unbuffered memory (default 0)"); + "memory type: 0=write-combined (default), 1=unbuffered, 2=cached"); static int ramoops_max_reason = -1; module_param_named(max_reason, ramoops_max_reason, int, 0400); @@ -648,6 +648,10 @@ static int ramoops_parse_dt(struct platform_device *pdev, pdata->mem_size = resource_size(res); pdata->mem_address = res->start; + /* + * Setting "unbuffered" is deprecated and will be ignored if + * "mem_type" is also specified. + */ pdata->mem_type = of_property_read_bool(of_node, "unbuffered"); /* * Setting "no-dump-oops" is deprecated and will be ignored if @@ -666,6 +670,7 @@ static int ramoops_parse_dt(struct platform_device *pdev, field = value; \ } + parse_u32("mem-type", pdata->record_size, pdata->mem_type); parse_u32("record-size", pdata->record_size, 0); parse_u32("console-size", pdata->console_size, 0); parse_u32("ftrace-size", pdata->ftrace_size, 0); diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index fff363bfd484..fe5305028c6e 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -396,6 +396,10 @@ void persistent_ram_zap(struct persistent_ram_zone *prz) persistent_ram_update_header_ecc(prz); } +#define MEM_TYPE_WCOMBINE 0 +#define MEM_TYPE_NONCACHED 1 +#define MEM_TYPE_NORMAL 2 + static void *persistent_ram_vmap(phys_addr_t start, size_t size, unsigned int memtype) { @@ -409,10 +413,20 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size, page_start = start - offset_in_page(start); page_count = DIV_ROUND_UP(size + offset_in_page(start), PAGE_SIZE); - if (memtype) + switch (memtype) { + case MEM_TYPE_NORMAL: + prot = PAGE_KERNEL; + break; + case MEM_TYPE_NONCACHED: prot = pgprot_noncached(PAGE_KERNEL); - else + break; + case MEM_TYPE_WCOMBINE: prot = pgprot_writecombine(PAGE_KERNEL); + break; + default: + pr_err("invalid mem_type=%d\n", memtype); + return NULL; + } pages = kmalloc_array(page_count, sizeof(struct page *), GFP_KERNEL); if (!pages) { |