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Linux_SDK_V1.1.2

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This commit is contained in:
thead_admin
2023-03-05 22:36:24 +08:00
parent 221913b496
commit ada47f394b
43 changed files with 3105 additions and 1822 deletions
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5
arch/riscv/kernel/machine_kexec.c
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@@ -179,9 +179,10 @@ machine_crash_shutdown(struct pt_regs *regs)
{
local_irq_disable();
#ifdef CONFIG_SMP
/* shutdown non-crashing cpus */
crash_smp_send_stop();
#endif
crash_save_cpu(regs, smp_processor_id());
machine_kexec_mask_interrupts();
@@ -211,8 +212,10 @@ machine_kexec(struct kimage *image)
void *control_code_buffer = page_address(image->control_code_page);
riscv_kexec_method kexec_method = NULL;
#ifdef CONFIG_SMP
WARN(smp_crash_stop_failed(),
"Some CPUs may be stale, kdump will be unreliable.\n");
#endif
if (image->type != KEXEC_TYPE_CRASH)
kexec_method = control_code_buffer;

4
arch/riscv/kernel/perf_callchain.c
View File

@@ -75,13 +75,13 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry,
fp = user_backtrace(entry, fp, 0);
}
bool fill_callchain(unsigned long pc, void *entry)
bool fill_callchain(unsigned long pc, unsigned long regs, void *entry)
{
return perf_callchain_store(entry, pc) == 0;
}
void notrace walk_stackframe(struct task_struct *task,
struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg);
struct pt_regs *regs, bool (*fn)(unsigned long, unsigned long, void *), void *arg);
void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry,
struct pt_regs *regs)
{

18
arch/riscv/kernel/probes/kprobes.c
View File

@@ -46,6 +46,21 @@ static void __kprobes arch_simulate_insn(struct kprobe *p, struct pt_regs *regs)
post_kprobe_handler(kcb, regs);
}
static bool __kprobes arch_check_kprobe(struct kprobe *p)
{
unsigned long tmp = (unsigned long)p->addr - p->offset;
unsigned long addr = (unsigned long)p->addr;
while (tmp <= addr) {
if (tmp == addr)
return true;
tmp += GET_INSN_LENGTH(*(u16 *)tmp);
}
return false;
}
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
unsigned long probe_addr = (unsigned long)p->addr;
@@ -56,6 +71,9 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
return -EINVAL;
}
if (!arch_check_kprobe(p))
return -EILSEQ;
/* copy instruction */
p->opcode = le32_to_cpu(*p->addr);