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Subject[Patch] sysrq-show-output, kernel 2.4.17
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Sysrq-m didnt show memory information on the serial console.

This patch sets the console_loglevel to 7 before it calls show_mem,
show_regs and show_state, to get the output.

Harald Holzer

--- linux-2.4.17/drivers/char/sysrq.c Fri Dec 21 18:41:54 2001
+++ linux/drivers/char/sysrq.c Tue Jan 1 21:18:24 2002
@@ -246,8 +246,14 @@

static void sysrq_handle_showregs(int key, struct pt_regs *pt_regs,
struct kbd_struct *kbd, struct tty_struct *tty) {
+ int orig_loglevel;
+
if (pt_regs)
+ orig_loglevel = console_loglevel;
+ console_loglevel = 7;
show_regs(pt_regs);
+ console_loglevel = orig_loglevel;
+
}
static struct sysrq_key_op sysrq_showregs_op = {
handler: sysrq_handle_showregs,
@@ -258,7 +264,12 @@

static void sysrq_handle_showstate(int key, struct pt_regs *pt_regs,
struct kbd_struct *kbd, struct tty_struct *tty) {
+ int orig_loglevel;
+
+ orig_loglevel = console_loglevel;
+ console_loglevel = 7;
show_state();
+ console_loglevel = orig_loglevel;
}
static struct sysrq_key_op sysrq_showstate_op = {
handler: sysrq_handle_showstate,
@@ -269,7 +280,12 @@

static void sysrq_handle_showmem(int key, struct pt_regs *pt_regs,
struct kbd_struct *kbd, struct tty_struct *tty) {
+ int orig_loglevel;
+
+ orig_loglevel = console_loglevel;
+ console_loglevel = 7;
show_mem();
+ console_loglevel = orig_loglevel;
}
static struct sysrq_key_op sysrq_showmem_op = {
handler: sysrq_handle_showmem,
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