diff options
Diffstat (limited to 'arch/x86/kernel/check.c')
| -rw-r--r-- | arch/x86/kernel/check.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c index 33399426793e..1979a76bfadd 100644 --- a/arch/x86/kernel/check.c +++ b/arch/x86/kernel/check.c @@ -1,4 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/init.h> #include <linux/sched.h> #include <linux/kthread.h> @@ -31,11 +34,17 @@ static __init int set_corruption_check(char *arg) ssize_t ret; unsigned long val; + if (!arg) { + pr_err("memory_corruption_check config string not provided\n"); + return -EINVAL; + } + ret = kstrtoul(arg, 10, &val); if (ret) return ret; memory_corruption_check = val; + return 0; } early_param("memory_corruption_check", set_corruption_check); @@ -45,6 +54,11 @@ static __init int set_corruption_check_period(char *arg) ssize_t ret; unsigned long val; + if (!arg) { + pr_err("memory_corruption_check_period config string not provided\n"); + return -EINVAL; + } + ret = kstrtoul(arg, 10, &val); if (ret) return ret; @@ -59,6 +73,11 @@ static __init int set_corruption_check_size(char *arg) char *end; unsigned size; + if (!arg) { + pr_err("memory_corruption_check_size config string not provided\n"); + return -EINVAL; + } + size = memparse(arg, &end); if (*end == '\0') @@ -113,7 +132,7 @@ void __init setup_bios_corruption_check(void) } if (num_scan_areas) - printk(KERN_INFO "Scanning %d areas for low memory corruption\n", num_scan_areas); + pr_info("Scanning %d areas for low memory corruption\n", num_scan_areas); } @@ -132,8 +151,7 @@ void check_for_bios_corruption(void) for (; size; addr++, size -= sizeof(unsigned long)) { if (!*addr) continue; - printk(KERN_ERR "Corrupted low memory at %p (%lx phys) = %08lx\n", - addr, __pa(addr), *addr); + pr_err("Corrupted low memory at %p (%lx phys) = %08lx\n", addr, __pa(addr), *addr); corruption = 1; *addr = 0; } @@ -157,11 +175,11 @@ static int start_periodic_check_for_corruption(void) if (!num_scan_areas || !memory_corruption_check || corruption_check_period == 0) return 0; - printk(KERN_INFO "Scanning for low memory corruption every %d seconds\n", - corruption_check_period); + pr_info("Scanning for low memory corruption every %d seconds\n", corruption_check_period); /* First time we run the checks right away */ schedule_delayed_work(&bios_check_work, 0); + return 0; } device_initcall(start_periodic_check_for_corruption); |