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smp: add a procfs entry to see what other cores are up to

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This commit is contained in:
K. Lange 2021-06-01 19:37:03 +09:00
parent aa52db5018
commit 01070fb2d0
1 changed files with 24 additions and 3 deletions
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27
kernel/vfs/procfs.c
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@ -659,6 +659,26 @@ static uint64_t pci_func(fs_node_t *node, uint64_t offset, uint64_t size, uint8_
}
#endif
static uint64_t smp_func(fs_node_t *node, uint64_t offset, uint64_t size, uint8_t *buffer) {
char * buf = malloc(4096);
unsigned int soffset = 0;
for (int i = 0; i < processor_count; ++i) {
soffset += snprintf(&buf[soffset], 100, "%d: %s [%d]\n", i, processor_local_data[i].current_process->name, processor_local_data[i].current_process->id);
}
size_t _bsize = strlen(buf);
if (offset > _bsize) {
free(buf);
return 0;
}
if (size > _bsize - offset) size = _bsize - offset;
memcpy(buffer, buf + offset, size);
free(buf);
return size;
}
static struct procfs_entry std_entries[] = {
{-1, "cpuinfo", cpuinfo_func},
{-2, "meminfo", meminfo_func},
@ -670,10 +690,11 @@ static struct procfs_entry std_entries[] = {
{-8, "modules", modules_func},
{-9, "filesystems", filesystems_func},
{-10,"loader", loader_func},
{-11,"smp", smp_func},
#ifdef __x86_64__
{-11,"irq", irq_func},
{-12,"pat", pat_func},
{-13,"pci", pci_func},
{-12,"irq", irq_func},
{-13,"pat", pat_func},
{-14,"pci", pci_func},
#endif
};