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| author | Peter Oberparleiter <oberpar@linux.ibm.com> | 2020-09-10 14:52:01 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-09-11 09:33:54 -0700 |
| commit | 40249c6962075c040fd071339acae524f18bfac9 (patch) | |
| tree | a8466725d845c44292e8d92e245ac0219e17ab83 /kernel/gcov/Kconfig | |
| parent | 581cb3a26baf846ee9636214afaa5333919875b1 (diff) | |
| download | lwn-40249c6962075c040fd071339acae524f18bfac9.tar.gz lwn-40249c6962075c040fd071339acae524f18bfac9.zip | |
gcov: add support for GCC 10.1
Using gcov to collect coverage data for kernels compiled with GCC 10.1
causes random malfunctions and kernel crashes. This is the result of a
changed GCOV_COUNTERS value in GCC 10.1 that causes a mismatch between
the layout of the gcov_info structure created by GCC profiling code and
the related structure used by the kernel.
Fix this by updating the in-kernel GCOV_COUNTERS value. Also re-enable
config GCOV_KERNEL for use with GCC 10.
Reported-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Tested-by: Leon Romanovsky <leonro@nvidia.com>
Tested-and-Acked-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/gcov/Kconfig')
| -rw-r--r-- | kernel/gcov/Kconfig | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig index bb4b680e8455..3110c77230c7 100644 --- a/kernel/gcov/Kconfig +++ b/kernel/gcov/Kconfig @@ -4,7 +4,6 @@ menu "GCOV-based kernel profiling" config GCOV_KERNEL bool "Enable gcov-based kernel profiling" depends on DEBUG_FS - depends on !CC_IS_GCC || GCC_VERSION < 100000 select CONSTRUCTORS if !UML default n help |