Commit f8d0dc21 authored by Waiman Long's avatar Waiman Long Committed by Jonathan Corbet
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Documentation/proc.txt: Add 2 missing fields for /proc/<pid>/status 



It was found that two of the fields in the /proc/<pid>/status file were
missing - CapAmb & Speculation_Store_Bypass. They are now added to the
proc.txt documentation file.

v2: Update the example as well.

Signed-off-by: default avatarWaiman Long <longman@redhat.com>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 1afc5fb5

Documentation/filesystems/proc.txt

+5 −1
Original line number Diff line number Diff line
@@ -193,8 +193,10 @@ read the file /proc/PID/status: 
  CapPrm: 0000000000000000

  CapEff: 0000000000000000

  CapBnd: ffffffffffffffff

  CapAmb: 0000000000000000

  NoNewPrivs:     0

  Seccomp:        0

  Speculation_Store_Bypass:       thread vulnerable

  voluntary_ctxt_switches:        0

  nonvoluntary_ctxt_switches:     1
@@ -214,7 +216,7 @@ 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 4.8)

Table 1-2: Contents of the status files (as of 4.19)

..............................................................................

 Field                       Content

 Name                        filename of the executable
@@ -267,8 +269,10 @@ Table 1-2: Contents of the status files (as of 4.8) 
 CapPrm                      bitmap of permitted capabilities

 CapEff                      bitmap of effective capabilities

 CapBnd                      bitmap of capabilities bounding set

 CapAmb                      bitmap of ambient capabilities

 NoNewPrivs                  no_new_privs, like prctl(PR_GET_NO_NEW_PRIV, ...)

 Seccomp                     seccomp mode, like prctl(PR_GET_SECCOMP, ...)

 Speculation_Store_Bypass    speculative store bypass mitigation status

 Cpus_allowed                mask of CPUs on which this process may run

 Cpus_allowed_list           Same as previous, but in "list format"

 Mems_allowed                mask of memory nodes allowed to this process

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