This reverts commit ad394f66fa57ae66014cb74f337e2820bac4c417.
No architectures ever implemented `enable_nmi` since the later patches
in the series adding it never landed. It's been a long time. Drop it.
NOTE: this is not a clean revert due to changes in the file in the
meantime.
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
kernel/debug/kdb/kdb_main.c | 37 -------------------------------------
1 file changed, 37 deletions(-)
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 5f4be507d79f..3a5408b54570 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -25,7 +25,6 @@
#include <linux/smp.h>
#include <linux/utsname.h>
#include <linux/vmalloc.h>
-#include <linux/atomic.h>
#include <linux/moduleparam.h>
#include <linux/mm.h>
#include <linux/init.h>
@@ -2119,32 +2118,6 @@ static int kdb_dmesg(int argc, const char **argv)
return 0;
}
#endif /* CONFIG_PRINTK */
-
-/* Make sure we balance enable/disable calls, must disable first. */
-static atomic_t kdb_nmi_disabled;
-
-static int kdb_disable_nmi(int argc, const char *argv[])
-{
- if (atomic_read(&kdb_nmi_disabled))
- return 0;
- atomic_set(&kdb_nmi_disabled, 1);
- arch_kgdb_ops.enable_nmi(0);
- return 0;
-}
-
-static int kdb_param_enable_nmi(const char *val, const struct kernel_param *kp)
-{
- if (!atomic_add_unless(&kdb_nmi_disabled, -1, 0))
- return -EINVAL;
- arch_kgdb_ops.enable_nmi(1);
- return 0;
-}
-
-static const struct kernel_param_ops kdb_param_ops_enable_nmi = {
- .set = kdb_param_enable_nmi,
-};
-module_param_cb(enable_nmi, &kdb_param_ops_enable_nmi, NULL, 0600);
-
/*
* kdb_cpu - This function implements the 'cpu' command.
* cpu [<cpunum>]
@@ -2836,20 +2809,10 @@ static kdbtab_t maintab[] = {
},
};
-static kdbtab_t nmicmd = {
- .name = "disable_nmi",
- .func = kdb_disable_nmi,
- .usage = "",
- .help = "Disable NMI entry to KDB",
- .flags = KDB_ENABLE_ALWAYS_SAFE,
-};
-
/* Initialize the kdb command table. */
static void __init kdb_inittab(void)
{
kdb_register_table(maintab, ARRAY_SIZE(maintab));
- if (arch_kgdb_ops.enable_nmi)
- kdb_register_table(&nmicmd, 1);
}
/* Execute any commands defined in kdb_cmds. */
--
2.48.1.262.g85cc9f2d1e-goog
