vserver 1.9.3

[linux-2.6.git] / Documentation / filesystems / proc.txt

diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 9d62659..0dad0f2 100644 (file)
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -55,7 +55,7 @@ This work is  based on the 2.2.*  kernel version and the  upcoming 2.4.*. I'm
 afraid it's still far from complete, but we  hope it will be useful. As far as
 we know, it is the first 'all-in-one' document about the /proc file system. It
 is focused  on the Intel  x86 hardware,  so if you  are looking for  PPC, ARM,
-SPARC, APX, etc., features, you probably  won't find what you are looking for.
+SPARC, AXP, etc., features, you probably  won't find what you are looking for.
 It also only covers IPv4 networking, not IPv6 nor other protocols - sorry. But
 additions and patches  are welcome and will  be added to this  document if you
 mail them to Bodo.
@@ -169,16 +169,18 @@ information. The  statm  file  contains  more  detailed  information about the
 process memory usage. Its seven fields are explained in Table 1-2.
 
 
-Table 1-2: Contents of the statm files 
+Table 1-2: Contents of the statm files (as of 2.6.8-rc3)
 ..............................................................................
- File     Content                         
- size     total program size              
- resident size of memory portions         
- shared   number of pages that are shared 
- trs      number of pages that are 'code' 
- drs      number of pages of data/stack   
- lrs      number of pages of library      
- dt       number of dirty pages           
+ Field    Content
+ size     total program size (pages)           (same as VmSize in status)
+ resident size of memory portions (pages)      (same as VmRSS in status)
+ shared   number of pages that are shared      (i.e. backed by a file)
+ trs      number of pages that are 'code'      (not including libs; broken,
+                                                       includes data segment)
+ lrs      number of pages of library           (always 0 on 2.6)
+ drs      number of pages of data/stack                (including libs; broken,
+                                                       includes library text)
+ dt       number of dirty pages                        (always 0 on 2.6)
 ..............................................................................
 
 1.2 Kernel data
@@ -1109,6 +1111,23 @@ modprobe
 The location  where  the  modprobe  binary  is  located.  The kernel uses this
 program to load modules on demand.
 
+unknown_nmi_panic
+-----------------
+
+The value in this file affects behavior of handling NMI. When the value is
+non-zero, unknown NMI is trapped and then panic occurs. At that time, kernel
+debugging information is displayed on console.
+
+NMI switch that most IA32 servers have fires unknown NMI up, for example.
+If a system hangs up, try pressing the NMI switch.
+
+[NOTE]
+   This function and oprofile share a NMI callback. Therefore this function
+   cannot be enabled when oprofile is activated.
+   And NMI watchdog will be disabled when the value in this file is set to
+   non-zero.
+
+
 2.4 /proc/sys/vm - The virtual memory subsystem
 -----------------------------------------------
 
@@ -1157,6 +1176,12 @@ for writeout by the pdflush daemons.  It is expressed in 100'ths of a second.
 Data which has been dirty in-memory for longer than this interval will be
 written out next time a pdflush daemon wakes up.
 
+legacy_va_layout
+----------------
+
+If non-zero, this sysctl disables the new 32-bit mmap mmap layout - the kernel
+will use the legacy (2.4) layout for all processes.
+
 lower_zone_protection
 ---------------------