[PATCH v2 0/4] KCOV fixes

From: Dmitry Vyukov
Date: Tue Jun 11 2024 - 03:50:52 EST


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 | 31 +++++++++++++++++++++++++++++++
kernel/module/Makefile | 2 +-
lib/Kconfig.debug | 8 ++++++++
6 files changed, 57 insertions(+), 6 deletions(-)


base-commit: 83a7eefedc9b56fe7bfeff13b6c7356688ffa670
--
2.45.2.505.gda0bf45e8d-goog