sched/clock: Provide !HAVE_UNSTABLE_SCHED_CLOCK stub for sched_clock_stable()

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When CONFIG_HAVE_UNSTABLE_SCHED_CLOCK is disabled, sched_clock() is
already assumed to provide stable semantics, but the public header
doesn't provide a sched_clock_stable() stub for that case.

Add a header stub that always returns true and clean up the duplicate
local stub in ring_buffer.c, so callers can use sched_clock_stable()
unconditionally.

Signed-off-by: Yiyang Chen <cyyzero16@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://patch.msgid.link/56e45338858946cd9581b75c8bd45dd37dba52c5.1778773587.git.cyyzero16@gmail.com

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Yiyang Chen 2026-05-15 00:05:05 +08:00 • committed by Peter Zijlstra

parent 95f44886af

commit ea19506013

2 changed files with 5 additions and 7 deletions

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5

include/linux/sched/clock.h

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7

kernel/trace/ring_buffer.c

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