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runtime: delete dead code in the tracer

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This code was just missed during the cleanup. There's maybe some merit
to keeping OneNewExtraM, but it would still be fairly optimistic. It's
trivial to bring back, so delete it for now.

Change-Id: I2d033c6daae787e0e8d6b92524f3e59610e2599f
Reviewed-on: https://go-review.googlesource.com/c/go/+/583375
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Michael Anthony Knyszek 2024-04-23 19:17:46 +00:00 committed by Michael Knyszek
parent 5a181c5042
commit be29a02161
2 changed files with 0 additions and 26 deletions
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6
src/runtime/proc.go
View File

@ -2343,11 +2343,6 @@ func oneNewExtraM() {
if raceenabled {
gp.racectx = racegostart(abi.FuncPCABIInternal(newextram) + sys.PCQuantum)
}
trace := traceAcquire()
if trace.ok() {
trace.OneNewExtraM(gp)
traceRelease(trace)
}
// put on allg for garbage collector
allgadd(gp)
@ -5489,7 +5484,6 @@ func (pp *p) destroy() {
freemcache(pp.mcache)
pp.mcache = nil
gfpurge(pp)
traceProcFree(pp)
if raceenabled {
if pp.timers.raceCtx != 0 {
// The race detector code uses a callback to fetch

20
src/runtime/traceruntime.go
View File

@ -560,11 +560,6 @@ func (tl traceLocker) HeapGoal() {
tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvHeapGoal, traceArg(heapGoal))
}
// OneNewExtraM is a no-op in the new tracer. This is worth keeping around though because
// it's a good place to insert a thread-level event about the new extra M.
func (tl traceLocker) OneNewExtraM(_ *g) {
}
// GoCreateSyscall indicates that a goroutine has transitioned from dead to GoSyscall.
//
// Unlike GoCreate, the caller must be running on gp.
@ -657,14 +652,6 @@ func trace_userLog(id uint64, category, message string) {
traceRelease(tl)
}
// traceProcFree is called when a P is destroyed.
//
// This must run on the system stack to match the old tracer.
//
//go:systemstack
func traceProcFree(_ *p) {
}
// traceThreadDestroy is called when a thread is removed from
// sched.freem.
//
@ -703,10 +690,3 @@ func traceThreadDestroy(mp *m) {
throw("bad use of trace.seqlock")
}
}
// Not used in the new tracer; solely for compatibility with the old tracer.
// nosplit because it's called from exitsyscall without a P.
//
//go:nosplit
func (_ traceLocker) RecordSyscallExitedTime(_ *g, _ *p) {
}