nuttx

History

chao an 4c8d244fae sched/getpid: replace syscall getpid/tid/ppid() to kernel version NuttX kernel should not use the syscall functions, especially after enabling CONFIG_SCHED_INSTRUMENTATION_SYSCALL, all system functions will be traced to backend, which will impact system performance. Signed-off-by: chao an <anchao@xiaomi.com>		2023-02-02 10:33:01 +08:00
..
fs_procfs.c	fs/procfs: sort level0 process id	2023-01-30 14:57:43 +08:00
fs_procfscpuload.c	fs/procfs: Remove the unnecessary strcmp	2022-01-12 07:19:40 +01:00
fs_procfscritmon.c	arch: Decouple up_critmon_[gettime\|convert] from critmon	2022-01-25 14:43:34 +08:00
fs_procfsiobinfo.c	iob: Remove iob_user_e enum and related code	2022-08-15 08:41:20 +03:00
fs_procfsmeminfo.c	procmeminfo:support memdump can show specific task	2022-12-19 20:43:33 +08:00
fs_procfsproc.c	sched/getpid: replace syscall getpid/tid/ppid() to kernel version	2023-02-02 10:33:01 +08:00
fs_procfstcbinfo.c	fs/procfstcbinfo: minor bug about print address	2022-04-01 12:14:52 +03:00
fs_procfsuptime.c	fs/procfs: Avoid the cast in uptime_read	2022-12-24 11:26:48 -03:00
fs_procfsutil.c	nuttx: Use MIN/MAX definitions from "sys/param.h"	2023-02-01 23:47:44 +08:00
fs_procfsversion.c	fs/procfs: Remove the unnecessary strcmp	2022-01-12 07:19:40 +01:00
fs_skeleton.c	fs/directory: move private directory information to filesystem	2022-08-09 23:30:01 +08:00
Kconfig	fs/procfs: Change FS_PROCFS_EXCLUDE_xxx default value to DEFAULT_SMALL	2022-10-18 15:10:26 +09:00
Make.defs	fs:procfs: add tcbinfo procfs interface	2021-11-10 14:31:10 -03:00
README.txt

README.txt

fs/procfs README
================

  This is a tiny procfs file system that allows read-only access to a few
  attributes of a task or thread.  This tiny procfs fs file system can be
  built into the system by enabling:

    CONFIG_FS_PROCFS=y

  It can then be mounted from the NSH command like like:

    nsh> mount -t procfs /proc

Example
=======

  NuttShell (NSH) NuttX-6.31
  nsh> mount -t procfs /proc

  nsh> ls /proc
  /proc:
   0/
   1/

  nsh> ls /proc/1
  /proc/1:
   status
   cmdline

  nsh> cat /proc/1/status
  Name:       init
  Type:       Task
  State:      Running
  Priority:   100
  Scheduler:  SCHED_FIFO
  SigMask:    00000000

  nsh> cat /proc/1/cmdline
  init

  nsh> sleep 100 &
  sleep [2:100]
  nsh> ls /proc
  ls /proc
  /proc:
   0/
   1/
   2/

  nsh> cat /proc/2/cmdline
  <pthread> 0x527420