ext3: Fix duplicate entries returned from getdents() system call

[linux-2.6-omap-h63xx.git] / Documentation / sysrq.txt

diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt
index 61613166981b9139a5961fe0c3344cbd03286688..10a0263ebb3f01e832c7827cc75d7fe54b341a6f 100644 (file)
--- a/Documentation/sysrq.txt
+++ b/Documentation/sysrq.txt
@@ -1,6 +1,6 @@
 Linux Magic System Request Key Hacks
 Documentation for sysrq.c
-Last update: 2007-JAN-06
+Last update: 2007-AUG-04
 
 *  What is the magic SysRq key?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -43,7 +43,7 @@ On x86   - You press the key combo 'ALT-SysRq-<command key>'. Note - Some
            keyboards may not have a key labeled 'SysRq'. The 'SysRq' key is
            also known as the 'Print Screen' key. Also some keyboards cannot
           handle so many keys being pressed at the same time, so you might
-          have better luck with "press Alt", "press SysRq", "release Alt",
+          have better luck with "press Alt", "press SysRq", "release SysRq",
           "press <command key>", release everything.
 
 On SPARC - You press 'ALT-STOP-<command key>', I believe.
@@ -64,11 +64,6 @@ On all -  write a character to /proc/sysrq-trigger.  e.g.:
 
 *  What are the 'command' keys?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-'r'     - Turns off keyboard raw mode and sets it to XLATE.
-
-'k'     - Secure Access Key (SAK) Kills all programs on the current virtual
-          console. NOTE: See important comments below in SAK section.
-
 'b'     - Will immediately reboot the system without syncing or unmounting
           your disks.
 
@@ -76,21 +71,43 @@ On all -  write a character to /proc/sysrq-trigger.  e.g.:
 
 'd'    - Shows all locks that are held.
 
-'o'     - Will shut your system off (if configured and supported).
+'e'     - Send a SIGTERM to all processes, except for init.
 
-'s'     - Will attempt to sync all mounted filesystems.
+'f'    - Will call oom_kill to kill a memory hog process.
 
-'u'     - Will attempt to remount all mounted filesystems read-only.
+'g'    - Used by kgdb on ppc and sh platforms.
 
-'p'     - Will dump the current registers and flags to your console.
+'h'     - Will display help (actually any other key than those listed
+          here will display help. but 'h' is easy to remember :-)
 
-'t'     - Will dump a list of current tasks and their information to your
-          console.
+'i'     - Send a SIGKILL to all processes, except for init.
+
+'k'     - Secure Access Key (SAK) Kills all programs on the current virtual
+          console. NOTE: See important comments below in SAK section.
+
+'l'     - Shows a stack backtrace for all active CPUs.
 
 'm'     - Will dump current memory info to your console.
 
 'n'    - Used to make RT tasks nice-able
 
+'o'     - Will shut your system off (if configured and supported).
+
+'p'     - Will dump the current registers and flags to your console.
+
+'q'     - Will dump per CPU lists of all armed hrtimers (but NOT regular
+          timer_list timers) and detailed information about all
+          clockevent devices.
+
+'r'     - Turns off keyboard raw mode and sets it to XLATE.
+
+'s'     - Will attempt to sync all mounted filesystems.
+
+'t'     - Will dump a list of current tasks and their information to your
+          console.
+
+'u'     - Will attempt to remount all mounted filesystems read-only.
+
 'v'    - Dumps Voyager SMP processor info to your console.
 
 'w'    - Dumps tasks that are in uninterruptable (blocked) state.
@@ -102,17 +119,6 @@ On all -  write a character to /proc/sysrq-trigger.  e.g.:
           it so that only emergency messages like PANICs or OOPSes would
           make it to your console.)
 
-'f'    - Will call oom_kill to kill a memory hog process.
-
-'e'     - Send a SIGTERM to all processes, except for init.
-
-'g'    - Used by kgdb on ppc platforms.
-
-'i'     - Send a SIGKILL to all processes, except for init.
-
-'h'     - Will display help (actually any other key than those listed
-          above will display help. but 'h' is easy to remember :-)
-
 *  Okay, so what can I use them for?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Well, un'R'aw is very handy when your X server or a svgalib program crashes.