diff options
| -rw-r--r-- | arch/blackfin/mm/blackfin_sram.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/arch/blackfin/mm/blackfin_sram.c b/arch/blackfin/mm/blackfin_sram.c index 3246f91c7ba..8f6fdc24533 100644 --- a/arch/blackfin/mm/blackfin_sram.c +++ b/arch/blackfin/mm/blackfin_sram.c @@ -549,13 +549,16 @@ EXPORT_SYMBOL(sram_alloc_with_lsl); /* Once we get a real allocator, we'll throw all of this away. * Until then, we need some sort of visibility into the L1 alloc. */ -static void _l1sram_proc_read(char *buf, int *len, const char *desc, +/* Need to keep line of output the same. Currently, that is 44 bytes + * (including newline). + */ +static int _l1sram_proc_read(char *buf, int *len, int count, const char *desc, struct l1_sram_piece *pfree, const int array_size) { int i; - *len += sprintf(&buf[*len], "--- L1 %-14s Size PID State\n", desc); - for (i = 0; i < array_size; ++i) { + *len += sprintf(&buf[*len], "--- L1 %-14s Size PID State \n", desc); + for (i = 0; i < array_size && *len < count; ++i) { const char *alloc_type; switch (pfree[i].flag) { case SRAM_SLT_NULL: alloc_type = "NULL"; break; @@ -563,31 +566,42 @@ static void _l1sram_proc_read(char *buf, int *len, const char *desc, case SRAM_SLT_ALLOCATED: alloc_type = "ALLOCATED"; break; default: alloc_type = "????"; break; } - *len += sprintf(&buf[*len], "%p-%p %8i %4i %s\n", + /* if we've got a lot of space to cover, omit things */ + if ((PAGE_SIZE - 1024) < (CONFIG_L1_MAX_PIECE + 1) * 4 * 44 && + pfree[i].size == 0) + continue; + *len += sprintf(&buf[*len], "%p-%p %8i %5i %-10s\n", pfree[i].paddr, pfree[i].paddr + pfree[i].size, pfree[i].size, pfree[i].pid, alloc_type); } + return (i != array_size); } static int l1sram_proc_read(char *buf, char **start, off_t offset, int count, int *eof, void *data) { int len = 0; - _l1sram_proc_read(buf, &len, "Scratchpad", - l1_ssram, ARRAY_SIZE(l1_ssram)); + if (_l1sram_proc_read(buf, &len, count, "Scratchpad", + l1_ssram, ARRAY_SIZE(l1_ssram))) + goto not_done; #if L1_DATA_A_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Data A", - l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); + if (_l1sram_proc_read(buf, &len, count, "Data A", + l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram))) + goto not_done; #endif #if L1_DATA_B_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Data B", - l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); + if (_l1sram_proc_read(buf, &len, count, "Data B", + l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram))) + goto not_done; #endif #if L1_CODE_LENGTH != 0 - _l1sram_proc_read(buf, &len, "Instruction", - l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); + if (_l1sram_proc_read(buf, &len, count, "Instruction", + l1_inst_sram, ARRAY_SIZE(l1_inst_sram))) + goto not_done; #endif + *eof = 1; + not_done: return len; } |