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fs/procfs: Supports any number of thread displays

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After the number of threads exceeds the array size, it will not be displayed.
Any number of threads can be displayed using dynamic adaptation

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai 2024-03-05 10:44:31 +08:00 committed by Xiang Xiao
parent efbf43cdfa
commit 263f8955da
3 changed files with 16 additions and 12 deletions
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1
boards/arm/stm32f7/nucleo-144/configs/f746-pysim/defconfig
View File

@ -34,7 +34,6 @@ CONFIG_DEV_GPIO=y
CONFIG_ETH0_PHY_LAN8742A=y
CONFIG_FS_PROCFS=y
CONFIG_FS_PROCFS_EXCLUDE_ENVIRON=y
CONFIG_FS_PROCFS_MAX_TASKS=16
CONFIG_FS_PROCFS_REGISTER=y
CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y

6
fs/procfs/Kconfig
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@ -21,12 +21,6 @@ config FS_PROCFS_REGISTER
Support run-time registration of the new entries in the procfs file
system.
config FS_PROCFS_MAX_TASKS
int "The maximum number of active tasks for procfs snapshot"
default 128
---help---
The maximum number of active tasks for procfs snapshot.
menu "Exclude individual procfs entries"
config FS_PROCFS_EXCLUDE_BLOCKS

21
fs/procfs/fs_procfs.c
View File

@ -47,6 +47,7 @@
#include <nuttx/fs/procfs.h>
#include "mount/mount.h"
#include "sched/sched.h"
/****************************************************************************
* External Definitions
@ -315,8 +316,8 @@ struct procfs_level0_s
/* Our private data */
uint8_t lastlen; /* length of last reported static dir */
pid_t pid[CONFIG_FS_PROCFS_MAX_TASKS]; /* Snapshot of all active task IDs */
FAR const char *lastread; /* Pointer to last static dir read */
pid_t pid[1]; /* Snapshot of all active task IDs */
};
/* Level 1 is an internal virtual directory (such as /proc/fs) which
@ -355,14 +356,14 @@ static void procfs_enum(FAR struct tcb_s *tcb, FAR void *arg)
/* Add the PID to the list */
index = dir->base.nentries;
if (index >= CONFIG_FS_PROCFS_MAX_TASKS)
if (dir->base.index >= dir->base.nentries)
{
return;
}
index = dir->base.index;
dir->pid[index] = tcb->pid;
dir->base.nentries = index + 1;
dir->base.index = index + 1;
}
/****************************************************************************
@ -633,12 +634,18 @@ static int procfs_opendir(FAR struct inode *mountpt, FAR const char *relpath,
if (!relpath || relpath[0] == '\0')
{
size_t num = 0;
/* The path refers to the top level directory. Allocate the level0
* dirent structure.
*/
#ifndef CONFIG_FS_PROCFS_EXCLUDE_PROCESS
num = g_npidhash;
#endif
level0 = (FAR struct procfs_level0_s *)
kmm_zalloc(sizeof(struct procfs_level0_s));
kmm_zalloc(sizeof(struct procfs_level0_s) + sizeof(pid_t) * num) ;
if (!level0)
{
ferr("ERROR: Failed to allocate the level0 directory structure\n");
@ -653,7 +660,11 @@ static int procfs_opendir(FAR struct inode *mountpt, FAR const char *relpath,
*/
#ifndef CONFIG_FS_PROCFS_EXCLUDE_PROCESS
level0->base.index = 0;
level0->base.nentries = num;
nxsched_foreach(procfs_enum, level0);
level0->base.nentries = level0->base.index;
level0->base.index = 0;
procfs_sort_pid(level0);
#else
level0->base.index = 0;