Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

runtime: add page tracer

Browse source 
This change adds a new GODEBUG flag called pagetrace that writes a
low-overhead trace of how pages of memory are managed by the Go runtime.

The page tracer is kept behind a GOEXPERIMENT flag due to a potential
security risk for setuid binaries.

Change-Id: I6f4a2447d02693c25214400846a5d2832ad6e5c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/444157
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Michael Knyszek 2022-10-19 14:51:15 -04:00
parent 0613418c98
commit e4435cb844
51 changed files with 636 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/runtime/runtime2.go
View file

@ -754,6 +754,11 @@ type p struct {
// scheduler ASAP (regardless of what G is running on it).
preempt bool
// pageTraceBuf is a buffer for writing out page allocation/free/scavenge traces.
//
// Used only if GOEXPERIMENT=pagetrace.
pageTraceBuf pageTraceBuf
// Padding is no longer needed. False sharing is now not a worry because p is large enough
// that its size class is an integer multiple of the cache line size (for any of our architectures).
}