From be0b569caa0eab1a7f30edf64e550bbf5f6ff235 Mon Sep 17 00:00:00 2001 From: Rhys Hiltner Date: Mon, 13 May 2024 12:23:58 -0700 Subject: runtime: prepare for extensions to waiting M list Move the nextwaitm field into a small struct, in preparation for additional metadata to track how long Ms need to wait for locks. For #66999 Change-Id: Ib40e43c15cde22f7e35922641107973d99439ecd Reviewed-on: https://go-review.googlesource.com/c/go/+/585635 Reviewed-by: Michael Pratt LUCI-TryBot-Result: Go LUCI Auto-Submit: Rhys Hiltner Reviewed-by: Dmitri Shuralyov --- src/runtime/runtime2.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/runtime/runtime2.go') diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index ff11414e3e..470b829912 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -596,8 +596,8 @@ type m struct { createstack [32]uintptr // stack that created this thread, it's used for StackRecord.Stack0, so it must align with it. lockedExt uint32 // tracking for external LockOSThread lockedInt uint32 // tracking for internal lockOSThread - nextwaitm muintptr // next m waiting for lock + mWaitList mWaitList // list of runtime lock waiters mLockProfile mLockProfile // fields relating to runtime.lock contention profStack []uintptr // used for memory/block/mutex stack traces -- cgit v1.3-5-g9baa