sysrq: fix inconstistent help message of sysrq key
Currently help message of /proc/sysrq-trigger highlight its
upper-case characters, like below:
SysRq : HELP : loglevel(0-9) reBoot Crash terminate-all-tasks(E)
memory-full-oom-kill(F) kill-all-tasks(I) ...
this would confuse user trigger sysrq by upper-case character, which is
inconsistent with the real lower-case character registed key.
This inconsistent help message will also lead more confused when
26 upper-case letters put into use in future.
This patch fix it.
Thanks the comments from Andrew and Randy.
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 3687f0c..0a0de33 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -101,7 +101,7 @@
}
static struct sysrq_key_op sysrq_SAK_op = {
.handler = sysrq_handle_SAK,
- .help_msg = "saK",
+ .help_msg = "sak(k)",
.action_msg = "SAK",
.enable_mask = SYSRQ_ENABLE_KEYBOARD,
};
@@ -117,7 +117,7 @@
static struct sysrq_key_op sysrq_unraw_op = {
.handler = sysrq_handle_unraw,
- .help_msg = "unRaw",
+ .help_msg = "unraw(r)",
.action_msg = "Keyboard mode set to system default",
.enable_mask = SYSRQ_ENABLE_KEYBOARD,
};
@@ -135,7 +135,7 @@
}
static struct sysrq_key_op sysrq_crash_op = {
.handler = sysrq_handle_crash,
- .help_msg = "Crash",
+ .help_msg = "crash(c)",
.action_msg = "Trigger a crash",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -148,7 +148,7 @@
}
static struct sysrq_key_op sysrq_reboot_op = {
.handler = sysrq_handle_reboot,
- .help_msg = "reBoot",
+ .help_msg = "reboot(b)",
.action_msg = "Resetting",
.enable_mask = SYSRQ_ENABLE_BOOT,
};
@@ -159,7 +159,7 @@
}
static struct sysrq_key_op sysrq_sync_op = {
.handler = sysrq_handle_sync,
- .help_msg = "Sync",
+ .help_msg = "sync(s)",
.action_msg = "Emergency Sync",
.enable_mask = SYSRQ_ENABLE_SYNC,
};
@@ -171,7 +171,7 @@
static struct sysrq_key_op sysrq_show_timers_op = {
.handler = sysrq_handle_show_timers,
- .help_msg = "show-all-timers(Q)",
+ .help_msg = "show-all-timers(q)",
.action_msg = "Show clockevent devices & pending hrtimers (no others)",
};
@@ -181,7 +181,7 @@
}
static struct sysrq_key_op sysrq_mountro_op = {
.handler = sysrq_handle_mountro,
- .help_msg = "Unmount",
+ .help_msg = "unmount(u)",
.action_msg = "Emergency Remount R/O",
.enable_mask = SYSRQ_ENABLE_REMOUNT,
};
@@ -194,7 +194,7 @@
static struct sysrq_key_op sysrq_showlocks_op = {
.handler = sysrq_handle_showlocks,
- .help_msg = "show-all-locks(D)",
+ .help_msg = "show-all-locks(d)",
.action_msg = "Show Locks Held",
};
#else
@@ -245,7 +245,7 @@
static struct sysrq_key_op sysrq_showallcpus_op = {
.handler = sysrq_handle_showallcpus,
- .help_msg = "show-backtrace-all-active-cpus(L)",
+ .help_msg = "show-backtrace-all-active-cpus(l)",
.action_msg = "Show backtrace of all active CPUs",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -260,7 +260,7 @@
}
static struct sysrq_key_op sysrq_showregs_op = {
.handler = sysrq_handle_showregs,
- .help_msg = "show-registers(P)",
+ .help_msg = "show-registers(p)",
.action_msg = "Show Regs",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -271,7 +271,7 @@
}
static struct sysrq_key_op sysrq_showstate_op = {
.handler = sysrq_handle_showstate,
- .help_msg = "show-task-states(T)",
+ .help_msg = "show-task-states(t)",
.action_msg = "Show State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -282,7 +282,7 @@
}
static struct sysrq_key_op sysrq_showstate_blocked_op = {
.handler = sysrq_handle_showstate_blocked,
- .help_msg = "show-blocked-tasks(W)",
+ .help_msg = "show-blocked-tasks(w)",
.action_msg = "Show Blocked State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -296,7 +296,7 @@
}
static struct sysrq_key_op sysrq_ftrace_dump_op = {
.handler = sysrq_ftrace_dump,
- .help_msg = "dump-ftrace-buffer(Z)",
+ .help_msg = "dump-ftrace-buffer(z)",
.action_msg = "Dump ftrace buffer",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -310,7 +310,7 @@
}
static struct sysrq_key_op sysrq_showmem_op = {
.handler = sysrq_handle_showmem,
- .help_msg = "show-memory-usage(M)",
+ .help_msg = "show-memory-usage(m)",
.action_msg = "Show Memory",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
@@ -341,7 +341,7 @@
}
static struct sysrq_key_op sysrq_term_op = {
.handler = sysrq_handle_term,
- .help_msg = "terminate-all-tasks(E)",
+ .help_msg = "terminate-all-tasks(e)",
.action_msg = "Terminate All Tasks",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -360,7 +360,7 @@
}
static struct sysrq_key_op sysrq_moom_op = {
.handler = sysrq_handle_moom,
- .help_msg = "memory-full-oom-kill(F)",
+ .help_msg = "memory-full-oom-kill(f)",
.action_msg = "Manual OOM execution",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -372,7 +372,7 @@
}
static struct sysrq_key_op sysrq_thaw_op = {
.handler = sysrq_handle_thaw,
- .help_msg = "thaw-filesystems(J)",
+ .help_msg = "thaw-filesystems(j)",
.action_msg = "Emergency Thaw of all frozen filesystems",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -385,7 +385,7 @@
}
static struct sysrq_key_op sysrq_kill_op = {
.handler = sysrq_handle_kill,
- .help_msg = "kill-all-tasks(I)",
+ .help_msg = "kill-all-tasks(i)",
.action_msg = "Kill All Tasks",
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
@@ -396,7 +396,7 @@
}
static struct sysrq_key_op sysrq_unrt_op = {
.handler = sysrq_handle_unrt,
- .help_msg = "nice-all-RT-tasks(N)",
+ .help_msg = "nice-all-RT-tasks(n)",
.action_msg = "Nice All RT Tasks",
.enable_mask = SYSRQ_ENABLE_RTNICE,
};