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fs/procfs: Add logic to show the state of the page allocator in /proc/meminfo.

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This commit is contained in:
Gregory Nutt
2017-11-14 14:59:51 -06:00
parent 54fad8d04f
commit d720711807
2 changed files with 618 additions and 20 deletions
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fs/procfs/fs_procfsmeminfo.c
+60 -20
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@@ -53,6 +53,7 @@
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/pgalloc.h>
#include <nuttx/mm/mm.h>
#include <nuttx/fs/fs.h>
#include <nuttx/fs/procfs.h>
@@ -304,21 +305,23 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
#ifdef CONFIG_MM_KERNEL_HEAP
if (totalsize < buflen)
{
buffer += copysize;
buflen -= copysize;
buffer += copysize;
buflen -= copysize;
/* The second line is the memory data */
/* Show kernel heap information */
#ifdef CONFIG_CAN_PASS_STRUCTS
mem = kmm_mallinfo();
mem = kmm_mallinfo();
#else
(void)kmm_mallinfo(&mem);
#endif
linesize = snprintf(procfile->line, MEMINFO_LINELEN,
"Kmem: %11d%11d%11d%11d\n",
mem.arena, mem.uordblks, mem.fordblks,
mem.mxordblk);
"Kmem: %11ul%11ul%11ul%11ul\n",
(unsigned long)mem.arena,
(unsigned long)mem.uordblks,
(unsigned long)mem.fordblks,
(unsigned long)mem.mxordblk);
copysize = procfs_memcpy(procfile->line, linesize, buffer, buflen,
&offset);
totalsize += copysize;
@@ -328,21 +331,54 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
#if !defined(CONFIG_BUILD_KERNEL)
if (totalsize < buflen)
{
buffer += copysize;
buflen -= copysize;
buffer += copysize;
buflen -= copysize;
/* The second line is the memory data */
/* Show user heap information */
#ifdef CONFIG_CAN_PASS_STRUCTS
mem = kumm_mallinfo();
mem = kumm_mallinfo();
#else
(void)kumm_mallinfo(&mem);
#endif
linesize = snprintf(procfile->line, MEMINFO_LINELEN,
"Umem: %11d%11d%11d%11d\n",
mem.arena, mem.uordblks, mem.fordblks,
mem.mxordblk);
"Umem: %11ul%11ul%11ul%11ul\n",
(unsigned long)mem.arena,
(unsigned long)mem.uordblks,
(unsigned long)mem.fordblks,
(unsigned long)mem.mxordblk);
copysize = procfs_memcpy(procfile->line, linesize, buffer, buflen,
&offset);
totalsize += copysize;
}
#endif
#ifdef CONFIG_MM_PGALLOC
if (totalsize < buflen)
{
struct pginfo_s pginfo;
unsigned long total;
unsigned long available;
unsigned long allocated;
unsigned long max;
buffer += copysize;
buflen -= copysize;
/* Show page allocator information */
mm_pginfo(&pginfo);
total = (unsigned long)pginfo.ntotal << MM_PGSHIFT;
available = (unsigned long)pginfo.nfree << MM_PGSHIFT;
allocated = total - available;
max = (unsigned long)pginfo.mxfree << MM_PGSHIFT;
linesize = snprintf(procfile->line, MEMINFO_LINELEN,
"Page: %11ul%11ul%11ul%11ul\n",
total, allocated, available, max);
copysize = procfs_memcpy(procfile->line, linesize, buffer, buflen,
&offset);
totalsize += copysize;
@@ -352,17 +388,21 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
#if defined(CONFIG_ARCH_HAVE_PROGMEM) && defined(CONFIG_FS_PROCFS_INCLUDE_PROGMEM)
if (totalsize < buflen)
{
buffer += copysize;
buflen -= copysize;
struct progmem_info_s progmem;
buffer += copysize;
buflen -= copysize;
/* The second line is the memory data */
meminfo_progmem(&progmem);
linesize = snprintf(procfile->line, PROGMEM_LINELEN,
"Prog: %11d%11d%11d%11d\n",
progmem.arena, progmem.uordblks, progmem.fordblks,
progmem.mxordblk);
linesize = snprintf(procfile->line, MEMINFO_LINELEN,
"Prog: %11ul%11ul%11ul%11ul\n",
(unsigned long)progmem.arena,
(unsigned long)progmem.uordblks,
(unsigned long)progmem.fordblks,
(unsigned long)progmem.mxordblk);
copysize = procfs_memcpy(procfile->line, linesize, buffer, buflen,
&offset);
totalsize += copysize;
mm/mm_gran/mm_graninfo.c
+558
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