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Groups > linux.kernel > #1589414 > unrolled thread
| Started by | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| First post | 2017-02-28 13:50 +0100 |
| Last post | 2017-02-28 14:50 +0100 |
| Articles | 2 — 1 participant |
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Re: [PATCH v5 06/13] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-02-28 13:50 +0100
Re: [PATCH v5 06/13] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-02-28 14:50 +0100
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Date | 2017-02-28 13:50 +0100 |
| Subject | Re: [PATCH v5 06/13] lockdep: Implement crossrelease feature |
| Message-ID | <tfPo6-4t2-11@gated-at.bofh.it> |
On Wed, Jan 18, 2017 at 10:17:32PM +0900, Byungchul Park wrote: > + /* > + * struct held_lock does not have an indicator whether in nmi. > + */ > + int nmi; Do we really need this? Lockdep doesn't really know about NMI context, so its weird to now partially introduce it.
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| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Date | 2017-02-28 14:50 +0100 |
| Message-ID | <tfQka-56u-23@gated-at.bofh.it> |
| In reply to | #1589414 |
On Tue, Feb 28, 2017 at 01:45:07PM +0100, Peter Zijlstra wrote: > On Wed, Jan 18, 2017 at 10:17:32PM +0900, Byungchul Park wrote: > > + /* > > + * struct held_lock does not have an indicator whether in nmi. > > + */ > > + int nmi; > > Do we really need this? Lockdep doesn't really know about NMI context, > so its weird to now partially introduce it. That is, see how nmi_enter() includes lockdep_off().
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