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Optimize the latency of lmbench-signal-prot

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This commit is contained in:
Jianfeng Jiang
2024-08-27 06:37:02 +00:00
committed by Tate, Hongliang Tian
parent 7b58d97aa2
commit a72c7dadf3
11 changed files with 137 additions and 87 deletions
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12
kernel/src/thread/exception.rs
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@ -19,12 +19,12 @@ pub fn handle_exception(ctx: &Context, context: &UserContext) {
match *exception {
PAGE_FAULT => {
if handle_page_fault(root_vmar.vm_space(), trap_info).is_err() {
generate_fault_signal(trap_info);
generate_fault_signal(trap_info, ctx);
}
}
_ => {
// We current do nothing about other exceptions
generate_fault_signal(trap_info);
generate_fault_signal(trap_info, ctx);
}
}
}
@ -42,13 +42,14 @@ pub(crate) fn handle_page_fault(
trap_info.error_code,
page_fault_addr
);
let not_present = trap_info.error_code & PAGE_NOT_PRESENT_ERROR_MASK == 0;
let write = trap_info.error_code & WRITE_ACCESS_MASK != 0;
if not_present || write {
// If page is not present or due to write access, we should ask the vmar try to commit this page
let current = current!();
let root_vmar = current.root_vmar();
// If page is not present or due to write access, we should ask the vmar try to commit this page
debug_assert_eq!(
Arc::as_ptr(root_vmar.vm_space()),
vm_space as *const VmSpace
@ -69,10 +70,9 @@ pub(crate) fn handle_page_fault(
}
/// generate a fault signal for current process.
fn generate_fault_signal(trap_info: &CpuExceptionInfo) {
let current = current!();
fn generate_fault_signal(trap_info: &CpuExceptionInfo, ctx: &Context) {
let signal = FaultSignal::new(trap_info);
current.enqueue_signal(signal);
ctx.posix_thread.enqueue_signal(Box::new(signal));
}
macro_rules! log_trap_common {