From: Tobias Klauser <tklauser@distanz.ch>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>
Cc: "Björn Töpel" <bjorn.topel@gmail.com>,
linux-riscv@lists.infradead.org,
"Dmitry Vyukov" <dvyukov@google.com>
Subject: [PATCH] riscv: enable kcov
Date: Thu, 25 Jun 2020 20:39:41 +0200 [thread overview]
Message-ID: <20200625183941.23093-1-tklauser@distanz.ch> (raw)
Add ARCH_HAS_KCOV and HAVE_GCC_PLUGINS to the riscv Kconfig.
Also disable instrumentation of vdso.
Cc: Björn Töpel <bjorn.topel@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
arch/riscv/Kconfig | 2 ++
arch/riscv/kernel/vdso/Makefile | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 089293e4ad46..a7d7f8184f15 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -19,6 +19,7 @@ config RISCV
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_HAS_KCOV
select ARCH_HAS_MMIOWB
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_DIRECT_MAP
@@ -57,6 +58,7 @@ config RISCV
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_EBPF_JIT if MMU
select HAVE_FUTEX_CMPXCHG if FUTEX
+ select HAVE_GCC_PLUGINS
select HAVE_GENERIC_VDSO if MMU && 64BIT
select HAVE_PCI
select HAVE_PERF_EVENTS
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 38ba55b0eb9d..9debbaab393d 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -29,6 +29,7 @@ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
# Disable gcov profiling for VDSO code
GCOV_PROFILE := n
+KCOV_INSTRUMENT := n
# Force dependency
$(obj)/vdso.o: $(obj)/vdso.so
--
2.27.0
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next reply other threads:[~2020-06-26 11:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-25 18:39 Tobias Klauser [this message]
2020-06-25 18:45 ` [PATCH] riscv: enable kcov Dmitry Vyukov
2020-06-26 12:02 ` Tobias Klauser
2020-06-26 12:40 ` [PATCH v2] riscv: Allow building with kcov coverage Tobias Klauser
2020-06-26 14:28 ` Dmitry Vyukov
2020-07-11 4:27 ` Palmer Dabbelt
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