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migrate: Don't migrate on in-kernel interrupt

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Change-Id: I9c07e0d633687ce232ec3cd0c80439ca2e856293
Refs: #1555
This commit is contained in:
Ken Sato
2020-12-11 13:25:57 +09:00
committed by Masamichi Takagi
parent 583319125a
commit 93dafc5f79
10 changed files with 555 additions and 8 deletions
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12
arch/x86_64/kernel/cpu.c
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@@ -932,11 +932,12 @@ void handle_interrupt(int vector, struct x86_user_context *regs)
{
struct ihk_mc_interrupt_handler *h;
struct cpu_local_var *v = get_this_cpu_local_var();
int from_user = interrupt_from_user(regs);
lapic_ack();
++v->in_interrupt;
set_cputime(interrupt_from_user(regs) ?
set_cputime(from_user ?
CPUTIME_MODE_U2K : CPUTIME_MODE_K2K_IN);
dkprintf("CPU[%d] got interrupt, vector: %d, RIP: 0x%lX\n",
@@ -1054,15 +1055,18 @@ void handle_interrupt(int vector, struct x86_user_context *regs)
}
interrupt_exit(regs);
set_cputime(interrupt_from_user(regs) ?
set_cputime(from_user ?
CPUTIME_MODE_K2U : CPUTIME_MODE_K2K_OUT);
--v->in_interrupt;
/* for migration by IPI */
if (v->flags & CPU_FLAG_NEED_MIGRATE) {
schedule();
check_signal(0, regs, 0);
// Don't migrate on K2K schedule
if (from_user) {
schedule();
check_signal(0, regs, 0);
}
}
}