linux-kernel - [PATCH 0/4] KCOV fixes

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Message-ID: <cover.1717506403.git.dvyukov@google.com>
Date: Tue,  4 Jun 2024 15:45:01 +0200
From: Dmitry Vyukov <dvyukov@...gle.com>
To: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, 
	dave.hansen@...ux.intel.com, x86@...nel.org
Cc: linux-kernel@...r.kernel.org, syzkaller@...glegroups.com, elver@...gle.com, 
	glider@...gle.com, nogikh@...gle.com, tarasmadan@...gle.com, 
	Dmitry Vyukov <dvyukov@...gle.com>
Subject: [PATCH 0/4] KCOV fixes

Fix spurious KCOV coverage from interrupts and add a test.
Ignore some additional files that lead to large amounts
of uninteresting coverage.
As a reference point, tracing a simple open system call
produces ~10K PCs with these changes instead of ~45K PCs.

Dmitry Vyukov (4):
  x86/entry: Remove unwanted instrumentation in common_interrupt()
  kcov: add interrupt handling self test
  module: Fix KCOV-ignored file name
  x86: Ignore stack unwinding in KCOV

 arch/x86/include/asm/hardirq.h  |  8 ++++++--
 arch/x86/include/asm/idtentry.h |  6 +++---
 arch/x86/kernel/Makefile        |  8 ++++++++
 kernel/kcov.c                   | 28 ++++++++++++++++++++++++++++
 kernel/module/Makefile          |  2 +-
 lib/Kconfig.debug               |  8 ++++++++
 6 files changed, 54 insertions(+), 6 deletions(-)


base-commit: 2ab79514109578fc4b6df90633d500cf281eb689
-- 
2.45.1.467.gbab1589fc0-goog