Messages in this thread Patch in this message | | | Date | Wed, 9 Dec 2020 23:23:28 +0100 | From | Borislav Petkov <> | Subject | Re: [tip: x86/cache] x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled |
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On Wed, Dec 09, 2020 at 07:06:58PM -0000, tip-bot2 for Xiaochen Shen wrote: > diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c > index 622073f..93a33b7 100644 > --- a/arch/x86/kernel/cpu/resctrl/monitor.c > +++ b/arch/x86/kernel/cpu/resctrl/monitor.c > @@ -320,7 +320,6 @@ static int __mon_event_count(u32 rmid, struct rmid_read *rr) > } > > chunks = mbm_overflow_count(m->prev_msr, tval, rr->r->mbm_width); > - m->chunks += chunks; > m->prev_msr = tval; > > rr->val += get_corrected_mbm_count(rmid, m->chunks);
Hmm, zapping this one. First, there's an unused variable warning:
https://lkml.kernel.org/r/202012100516.H7sTNehL-lkp@intel.com
and you should remove the chunks assignment too.
And then it didn't apply cleanly:
$ test-apply.sh /tmp/xiaochen.01 checking file arch/x86/kernel/cpu/resctrl/monitor.c Hunk #1 FAILED at 279. Hunk #2 succeeded at 514 (offset 64 lines). 1 out of 2 hunks FAILED
I wiggled it in but it ended up removing the wrong chunks inc line - not the one in mbm_bw_count() but in __mon_event_count() - which I just realized. So please redo this patch against:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=x86/cache
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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