diff options
Diffstat (limited to 'lib/test_printf.c')
| -rw-r--r-- | lib/test_printf.c | 108 |
1 files changed, 98 insertions, 10 deletions
diff --git a/lib/test_printf.c b/lib/test_printf.c index 95a2f82427c7..ec0d5976bb69 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -577,24 +577,98 @@ netdev_features(void) { } +struct page_flags_test { + int width; + int shift; + int mask; + unsigned long value; + const char *fmt; + const char *name; +}; + +static struct page_flags_test pft[] = { + {SECTIONS_WIDTH, SECTIONS_PGSHIFT, SECTIONS_MASK, + 0, "%d", "section"}, + {NODES_WIDTH, NODES_PGSHIFT, NODES_MASK, + 0, "%d", "node"}, + {ZONES_WIDTH, ZONES_PGSHIFT, ZONES_MASK, + 0, "%d", "zone"}, + {LAST_CPUPID_WIDTH, LAST_CPUPID_PGSHIFT, LAST_CPUPID_MASK, + 0, "%#x", "lastcpupid"}, + {KASAN_TAG_WIDTH, KASAN_TAG_PGSHIFT, KASAN_TAG_MASK, + 0, "%#x", "kasantag"}, +}; + +static void __init +page_flags_test(int section, int node, int zone, int last_cpupid, + int kasan_tag, int flags, const char *name, char *cmp_buf) +{ + unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag}; + unsigned long page_flags = 0; + unsigned long size = 0; + bool append = false; + int i; + + flags &= BIT(NR_PAGEFLAGS) - 1; + if (flags) { + page_flags |= flags; + snprintf(cmp_buf + size, BUF_SIZE - size, "%s", name); + size = strlen(cmp_buf); +#if SECTIONS_WIDTH || NODES_WIDTH || ZONES_WIDTH || \ + LAST_CPUPID_WIDTH || KASAN_TAG_WIDTH + /* Other information also included in page flags */ + snprintf(cmp_buf + size, BUF_SIZE - size, "|"); + size = strlen(cmp_buf); +#endif + } + + /* Set the test value */ + for (i = 0; i < ARRAY_SIZE(pft); i++) + pft[i].value = values[i]; + + for (i = 0; i < ARRAY_SIZE(pft); i++) { + if (!pft[i].width) + continue; + + if (append) { + snprintf(cmp_buf + size, BUF_SIZE - size, "|"); + size = strlen(cmp_buf); + } + + page_flags |= (pft[i].value & pft[i].mask) << pft[i].shift; + snprintf(cmp_buf + size, BUF_SIZE - size, "%s=", pft[i].name); + size = strlen(cmp_buf); + snprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt, + pft[i].value & pft[i].mask); + size = strlen(cmp_buf); + append = true; + } + + test(cmp_buf, "%pGp", &page_flags); +} + static void __init flags(void) { unsigned long flags; - gfp_t gfp; char *cmp_buffer; + gfp_t gfp; + + cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); + if (!cmp_buffer) + return; flags = 0; - test("", "%pGp", &flags); + page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer); - /* Page flags should filter the zone id */ flags = 1UL << NR_PAGEFLAGS; - test("", "%pGp", &flags); + page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer); flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru | 1UL << PG_active | 1UL << PG_swapbacked; - test("uptodate|dirty|lru|active|swapbacked", "%pGp", &flags); - + page_flags_test(1, 1, 1, 0x1fffff, 1, flags, + "uptodate|dirty|lru|active|swapbacked", + cmp_buffer); flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_DENYWRITE; @@ -609,10 +683,6 @@ flags(void) gfp = __GFP_ATOMIC; test("__GFP_ATOMIC", "%pGg", &gfp); - cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); - if (!cmp_buffer) - return; - /* Any flags not translated by the table should remain numeric */ gfp = ~__GFP_BITS_MASK; snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp); @@ -655,6 +725,23 @@ static void __init fwnode_pointer(void) software_node_unregister_nodes(softnodes); } +static void __init fourcc_pointer(void) +{ + struct { + u32 code; + char *str; + } const try[] = { + { 0x3231564e, "NV12 little-endian (0x3231564e)", }, + { 0xb231564e, "NV12 big-endian (0xb231564e)", }, + { 0x10111213, ".... little-endian (0x10111213)", }, + { 0x20303159, "Y10 little-endian (0x20303159)", }, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(try); i++) + test(try[i].str, "%p4cc", &try[i].code); +} + static void __init errptr(void) { @@ -700,6 +787,7 @@ test_pointer(void) flags(); errptr(); fwnode_pointer(); + fourcc_pointer(); } static void __init selftest(void) |