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soc: qcom: minidump: Change the way to locate log_buf

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Use the exported function instead of kallsyms_lookup to get
log_buf location, this can save a lot of time during boot up.

Change-Id: I9ec242ad6edfc3ba101198a5c1ed15bb5ad085a0
Signed-off-by: Huang Yiwei <hyiwei@codeaurora.org>
This commit is contained in:
Huang Yiwei 2020-11-11 16:31:18 +08:00
commit 2e6e946cef
1 changed files with 10 additions and 9 deletions
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19
drivers/soc/qcom/minidump_log.c
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@ -145,21 +145,22 @@ static DEFINE_SPINLOCK(md_modules_lock);
static void __init register_log_buf(void)
{
char **log_bufp;
uint32_t *log_buf_lenp;
char *log_bufp;
uint32_t log_buf_len;
struct md_region md_entry;
log_bufp = (char **)kallsyms_lookup_name("log_buf");
log_buf_lenp = (uint32_t *)kallsyms_lookup_name("log_buf_len");
if (!log_bufp || !log_buf_lenp) {
pr_err("Unable to find log_buf by kallsyms!\n");
log_bufp = log_buf_addr_get();
log_buf_len = log_buf_len_get();
if (!log_bufp || !log_buf_len) {
pr_err("Unable to locate log_buf!\n");
return;
}
/*Register logbuf to minidump, first idx would be from bss section */
strlcpy(md_entry.name, "KLOGBUF", sizeof(md_entry.name));
md_entry.virt_addr = (uintptr_t) (*log_bufp);
md_entry.phys_addr = virt_to_phys(*log_bufp);
md_entry.size = *log_buf_lenp;
md_entry.virt_addr = (uintptr_t) log_bufp;
md_entry.phys_addr = virt_to_phys(log_bufp);
md_entry.size = log_buf_len;
if (msm_minidump_add_region(&md_entry) < 0)
pr_err("Failed to add logbuf in Minidump\n");
}