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-rw-r--r--Documentation/filesystems/proc.txt15
1 files changed, 12 insertions, 3 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index a07ba61662ed..8e36c7e3c345 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -200,12 +200,12 @@ contains details information about the process itself. Its fields are
explained in Table 1-4.
(for SMP CONFIG users)
-For making accounting scalable, RSS related information are handled in
-asynchronous manner and the vaule may not be very precise. To see a precise
+For making accounting scalable, RSS related information are handled in an
+asynchronous manner and the value may not be very precise. To see a precise
snapshot of a moment, you can see /proc/<pid>/smaps file and scan page table.
It's slow but very precise.
-Table 1-2: Contents of the status files (as of 2.6.30-rc7)
+Table 1-2: Contents of the status files (as of 3.20.0)
..............................................................................
Field Content
Name filename of the executable
@@ -213,6 +213,7 @@ Table 1-2: Contents of the status files (as of 2.6.30-rc7)
in an uninterruptible wait, Z is zombie,
T is traced or stopped)
Tgid thread group ID
+ Ngid NUMA group ID (0 if none)
Pid process id
PPid process id of the parent process
TracerPid PID of process tracing this process (0 if not)
@@ -220,6 +221,10 @@ Table 1-2: Contents of the status files (as of 2.6.30-rc7)
Gid Real, effective, saved set, and file system GIDs
FDSize number of file descriptor slots currently allocated
Groups supplementary group list
+ NStgid descendant namespace thread group ID hierarchy
+ NSpid descendant namespace process ID hierarchy
+ NSpgid descendant namespace process group ID hierarchy
+ NSsid descendant namespace session ID hierarchy
VmPeak peak virtual memory size
VmSize total program size
VmLck locked memory size
@@ -1704,6 +1709,10 @@ A typical output is
flags: 0100002
mnt_id: 19
+All locks associated with a file descriptor are shown in its fdinfo too.
+
+lock: 1: FLOCK ADVISORY WRITE 359 00:13:11691 0 EOF
+
The files such as eventfd, fsnotify, signalfd, epoll among the regular pos/flags
pair provide additional information particular to the objects they represent.