From: Peter Oberparleiter <oberpar@linux.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
Matthieu Baerts <matttbe@kernel.org>,
Peter Oberparleiter <oberpar@linux.ibm.com>
Subject: [PATCH] gcov: Add support for GCC 15
Date: Tue, 28 Oct 2025 12:51:25 +0100 [thread overview]
Message-ID: <20251028115125.1319410-1-oberpar@linux.ibm.com> (raw)
Using gcov on kernels compiled with GCC 15 results in truncated 16-byte
long .gcda files with no usable data. To fix this, update GCOV_COUNTERS
to match the value defined by GCC 15.
Tested with GCC 14.3.0 and GCC 15.2.0.
Reported-by: Matthieu Baerts <matttbe@kernel.org>
Closes: https://github.com/linux-test-project/lcov/issues/445
Tested-by: Matthieu Baerts <matttbe@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
---
kernel/gcov/gcc_4_7.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c
index a08cc076f332..ffde93d051a4 100644
--- a/kernel/gcov/gcc_4_7.c
+++ b/kernel/gcov/gcc_4_7.c
@@ -18,7 +18,9 @@
#include <linux/mm.h>
#include "gcov.h"
-#if (__GNUC__ >= 14)
+#if (__GNUC__ >= 15)
+#define GCOV_COUNTERS 10
+#elif (__GNUC__ >= 14)
#define GCOV_COUNTERS 9
#elif (__GNUC__ >= 10)
#define GCOV_COUNTERS 8
--
2.48.1
reply other threads:[~2025-10-28 11:51 UTC|newest]
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