Re: PHP performance on Xen domU with mulitple vcpu
Taylor R Campbell <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.kernel |
|---|---|
| Message-ID | <[email protected]> |
> Date: Sun, 6 Apr 2025 00:03:25 +0000 > From: Emmanuel Dreyfus <[email protected]> > > I was not able to load dtrace: > kobj_checksyms, 1013: [dtrace]: linker error: symbol `dtrace_smap_enable' not found Try the attached patch? (It would be good to have dtrace working, though it might not help in this case -- all of the dtrace probes, except sdt:xen:hardclock:jump, have corresponding event counters which would have gone up if the probes would have fired.)
xensmap.patch
(text/plain, 370 B)
--- a/sys/arch/amd64/amd64/cpufunc.S +++ b/sys/arch/amd64/amd64/cpufunc.S @@ -83,7 +83,17 @@ END(xen_mb) #endif /* XEN */ -#ifndef XENPV +#ifdef XENPV +#ifdef KDTRACE_HOOKS +ENTRY(dtrace_smap_enable) + ret +END(dtrace_smap_enable) + +ENTRY(dtrace_smap_disable) + ret +END(dtrace_smap_disable) +#endif +#else ENTRY(invlpg) #ifdef SVS movb _C_LABEL(svs_pcid),%al