perf/x86/intel/pt: Factor out pt_config_enable()

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pt_config() enables tracing by allowing NMIs and pause/resume, issuing
the necessary barriers, and calling pt_config_start().  A later change
needs to re-enable tracing on a (re-)start path without repeating the
full pt_config() setup (filters, RTIT_CTL, buffer configuration).

Factor that enabling sequence out into a new helper, pt_config_enable(),
so it can be called on its own.

No functional change intended.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Yi Lai <yi1.lai@intel.com>
Link: https://patch.msgid.link/20260721070254.13557-2-adrian.hunter@intel.com

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Adrian Hunter 2026-07-21 10:02:52 +03:00 • committed by Peter Zijlstra

parent 36c8b02c3f

commit c6df517796

1 changed files with 24 additions and 17 deletions

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arch/x86/events/intel/pt.c

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