Imbus/xv6-riscv-kernel
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This commit is contained in:
Frans Kaashoek 2017-02-01 19:18:47 -05:00
parent ed396c068b
commit 7c00ce8110
1 changed files with 2 additions and 6 deletions
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8
proc.c
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@ -36,13 +36,9 @@ cpuid() {
struct cpu* struct cpu*
mycpu(void) mycpu(void)
{ {
// Would prefer to panic but even printing is chancy here: almost everything,
// including cprintf and panic, calls mycpu(), often indirectly through
// acquire and release.
if(readeflags()&FL_IF){ if(readeflags()&FL_IF){
static int n; // Would prefer to panic but panic calls mycpu().
if(n++ == 0) cprintf("mycpu called from %x with interrupts enabled\n",
cprintf("mycpu called from %x with interrupts enabled\n",
__builtin_return_address(0)); __builtin_return_address(0));
} }