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runtime: make traceClockNow nosplit
It's called from exitsyscall, which is nosplit. Change-Id: I3f5f92e044497a88a72c1870beb2bdd15c4263c4 Reviewed-on: https://go-review.googlesource.com/c/go/+/496517 Auto-Submit: Michael Knyszek <mknyszek@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Michael Knyszek <mknyszek@google.com> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: David Chase <drchase@google.com>
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@ -1786,6 +1786,10 @@ type traceTime uint64
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// traceClockNow returns a monotonic timestamp. The clock this function gets
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// traceClockNow returns a monotonic timestamp. The clock this function gets
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// the timestamp from is specific to tracing, and shouldn't be mixed with other
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// the timestamp from is specific to tracing, and shouldn't be mixed with other
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// clock sources.
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// clock sources.
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//
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// nosplit because it's called from exitsyscall, which is nosplit.
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//
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//go:nosplit
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func traceClockNow() traceTime {
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func traceClockNow() traceTime {
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return traceTime(cputicks() / traceTimeDiv)
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return traceTime(cputicks() / traceTimeDiv)
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}
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}
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