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nova: use in core one pager per CPU

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Fixes #1394
This commit is contained in:
Alexander Boettcher
2014-09-05 17:00:31 +02:00
committed by Christian Helmuth
parent 0f47ac958b
commit a31378476d
21 changed files with 750 additions and 308 deletions
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20
repos/base-nova/include/nova/syscall-generic.h
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@@ -129,16 +129,24 @@ namespace Nova {
unsigned cpus() const {
unsigned cpu_num = 0;
const char * cpu_desc =
reinterpret_cast<const char *>(this) + cpu_desc_offset;
for (unsigned i = 0; i < cpu_max(); i++) {
if ((*cpu_desc) & 0x1) cpu_num++;
cpu_desc += cpu_desc_size;
}
for (unsigned i = 0; i < cpu_max(); i++)
if (is_cpu_enabled(i))
cpu_num++;
return cpu_num;
}
bool is_cpu_enabled(unsigned i) const {
if (i >= cpu_max())
return false;
const char * cpu_desc = reinterpret_cast<const char *>(this) +
cpu_desc_offset + i * cpu_desc_size;
return (*cpu_desc) & 0x1;
}
} __attribute__((packed));