diff options
Diffstat (limited to 'kernel/printk/printk.c')
| -rw-r--r-- | kernel/printk/printk.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 9a2e23191576..25cfe4fe48af 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -959,11 +959,11 @@ void log_buf_vmcoreinfo_setup(void) VMCOREINFO_STRUCT_SIZE(prb_desc_ring); VMCOREINFO_OFFSET(prb_desc_ring, count_bits); VMCOREINFO_OFFSET(prb_desc_ring, descs); + VMCOREINFO_OFFSET(prb_desc_ring, infos); VMCOREINFO_OFFSET(prb_desc_ring, head_id); VMCOREINFO_OFFSET(prb_desc_ring, tail_id); VMCOREINFO_STRUCT_SIZE(prb_desc); - VMCOREINFO_OFFSET(prb_desc, info); VMCOREINFO_OFFSET(prb_desc, state_var); VMCOREINFO_OFFSET(prb_desc, text_blk_lpos); VMCOREINFO_OFFSET(prb_desc, dict_blk_lpos); @@ -1097,11 +1097,13 @@ static char setup_dict_buf[CONSOLE_EXT_LOG_MAX] __initdata; void __init setup_log_buf(int early) { + struct printk_info *new_infos; unsigned int new_descs_count; struct prb_desc *new_descs; struct printk_info info; struct printk_record r; size_t new_descs_size; + size_t new_infos_size; unsigned long flags; char *new_dict_buf; char *new_log_buf; @@ -1142,8 +1144,7 @@ void __init setup_log_buf(int early) if (unlikely(!new_dict_buf)) { pr_err("log_buf_len: %lu dict bytes not available\n", new_log_buf_len); - memblock_free(__pa(new_log_buf), new_log_buf_len); - return; + goto err_free_log_buf; } new_descs_size = new_descs_count * sizeof(struct prb_desc); @@ -1151,9 +1152,15 @@ void __init setup_log_buf(int early) if (unlikely(!new_descs)) { pr_err("log_buf_len: %zu desc bytes not available\n", new_descs_size); - memblock_free(__pa(new_dict_buf), new_log_buf_len); - memblock_free(__pa(new_log_buf), new_log_buf_len); - return; + goto err_free_dict_buf; + } + + new_infos_size = new_descs_count * sizeof(struct printk_info); + new_infos = memblock_alloc(new_infos_size, LOG_ALIGN); + if (unlikely(!new_infos)) { + pr_err("log_buf_len: %zu info bytes not available\n", + new_infos_size); + goto err_free_descs; } prb_rec_init_rd(&r, &info, @@ -1163,7 +1170,8 @@ void __init setup_log_buf(int early) prb_init(&printk_rb_dynamic, new_log_buf, ilog2(new_log_buf_len), new_dict_buf, ilog2(new_log_buf_len), - new_descs, ilog2(new_descs_count)); + new_descs, ilog2(new_descs_count), + new_infos); logbuf_lock_irqsave(flags); @@ -1192,6 +1200,14 @@ void __init setup_log_buf(int early) pr_info("log_buf_len: %u bytes\n", log_buf_len); pr_info("early log buf free: %u(%u%%)\n", free, (free * 100) / __LOG_BUF_LEN); + return; + +err_free_descs: + memblock_free(__pa(new_descs), new_descs_size); +err_free_dict_buf: + memblock_free(__pa(new_dict_buf), new_log_buf_len); +err_free_log_buf: + memblock_free(__pa(new_log_buf), new_log_buf_len); } static bool __read_mostly ignore_loglevel; |