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support to utility thread offloading

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This commit is contained in:
Tomoki Shirasawa
2017-06-27 13:27:09 +09:00
parent 2afc9d37d1
commit 07efb3ab9a
19 changed files with 2077 additions and 134 deletions
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69
arch/x86/kernel/syscall.c
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@ -259,7 +259,7 @@ SYSCALL_DECLARE(rt_sigreturn)
extern struct cpu_local_var *clv;
extern unsigned long do_kill(struct thread *thread, int pid, int tid, int sig, struct siginfo *info, int ptracecont);
extern void interrupt_syscall(int pid, int tid);
extern void interrupt_syscall(struct thread *, int sig);
extern int num_processors;
#define RFLAGS_MASK (RFLAGS_CF | RFLAGS_PF | RFLAGS_AF | RFLAGS_ZF | \
@ -1230,6 +1230,12 @@ done:
return 0;
}
if (tthread->thread_offloaded) {
interrupt_syscall(tthread, sig);
release_thread(tthread);
return 0;
}
doint = 0;
mcs_rwlock_writer_lock_noirq(savelock, &mcs_rw_node);
@ -1275,8 +1281,6 @@ done:
cpu_restore_interrupt(irqstate);
if (doint && !(mask & tthread->sigmask.__val[0])) {
int tid = tthread->tid;
int pid = tproc->pid;
int status = tthread->status;
if (thread != tthread) {
@ -1286,7 +1290,7 @@ done:
}
if(!tthread->proc->nohost)
interrupt_syscall(pid, tid);
interrupt_syscall(tthread, 0);
if (status != PS_RUNNING) {
if(sig == SIGKILL){
@ -1826,4 +1830,61 @@ out:
return error;
} /* arch_map_vdso() */
void
save_uctx(void *uctx, struct x86_user_context *regs)
{
struct trans_uctx {
volatile int cond;
int fregsize;
unsigned long rax;
unsigned long rbx;
unsigned long rcx;
unsigned long rdx;
unsigned long rsi;
unsigned long rdi;
unsigned long rbp;
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r12;
unsigned long r13;
unsigned long r14;
unsigned long r15;
unsigned long rflags;
unsigned long rip;
unsigned long rsp;
unsigned long fs;
} *ctx = uctx;
if (!regs) {
asm ("movq %%gs:(%1),%0" : "=r"(regs) :
"r"(offsetof(struct x86_cpu_local_variables, tss.rsp0)));
regs--;
}
ctx->cond = 0;
ctx->rax = regs->gpr.rax;
ctx->rbx = regs->gpr.rbx;
ctx->rcx = regs->gpr.rcx;
ctx->rdx = regs->gpr.rdx;
ctx->rsi = regs->gpr.rsi;
ctx->rdi = regs->gpr.rdi;
ctx->rbp = regs->gpr.rbp;
ctx->r8 = regs->gpr.r8;
ctx->r9 = regs->gpr.r9;
ctx->r10 = regs->gpr.r10;
ctx->r11 = regs->gpr.r11;
ctx->r12 = regs->gpr.r12;
ctx->r13 = regs->gpr.r13;
ctx->r14 = regs->gpr.r14;
ctx->r15 = regs->gpr.r15;
ctx->rflags = regs->gpr.rflags;
ctx->rsp = regs->gpr.rsp;
ctx->rip = regs->gpr.rip;
ihk_mc_arch_get_special_register(IHK_ASR_X86_FS, &ctx->fs);
ctx->fregsize = 0;
}
/*** End of File ***/