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path: root/drivers/char/sysrq.c
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Diffstat (limited to 'drivers/char/sysrq.c')
-rw-r--r--drivers/char/sysrq.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 13935235e066..7fd3cd5ddf21 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -215,7 +215,7 @@ static void sysrq_handle_showstate_blocked(int key, struct tty_struct *tty)
}
static struct sysrq_key_op sysrq_showstate_blocked_op = {
.handler = sysrq_handle_showstate_blocked,
- .help_msg = "showBlockedTasks",
+ .help_msg = "shoW-blocked-tasks",
.action_msg = "Show Blocked State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -315,15 +315,16 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
&sysrq_loglevel_op, /* 9 */
/*
- * Don't use for system provided sysrqs, it is handled specially on
- * sparc and will never arrive
+ * a: Don't use for system provided sysrqs, it is handled specially on
+ * sparc and will never arrive.
*/
NULL, /* a */
&sysrq_reboot_op, /* b */
- &sysrq_crashdump_op, /* c */
+ &sysrq_crashdump_op, /* c & ibm_emac driver debug */
&sysrq_showlocks_op, /* d */
&sysrq_term_op, /* e */
&sysrq_moom_op, /* f */
+ /* g: May be registered by ppc for kgdb */
NULL, /* g */
NULL, /* h */
&sysrq_kill_op, /* i */
@@ -332,18 +333,19 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
NULL, /* l */
&sysrq_showmem_op, /* m */
&sysrq_unrt_op, /* n */
- /* This will often be registered as 'Off' at init time */
+ /* o: This will often be registered as 'Off' at init time */
NULL, /* o */
&sysrq_showregs_op, /* p */
NULL, /* q */
- &sysrq_unraw_op, /* r */
+ &sysrq_unraw_op, /* r */
&sysrq_sync_op, /* s */
&sysrq_showstate_op, /* t */
&sysrq_mountro_op, /* u */
- /* May be assigned at init time by SMP VOYAGER */
+ /* v: May be registered at init time by SMP VOYAGER */
NULL, /* v */
- NULL, /* w */
- &sysrq_showstate_blocked_op, /* x */
+ &sysrq_showstate_blocked_op, /* w */
+ /* x: May be registered on ppc/powerpc for xmon */
+ NULL, /* x */
NULL, /* y */
NULL /* z */
};