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| author | Arnd Bergmann <arnd@arndb.de> | 2016-04-25 17:35:31 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.com> | 2016-05-10 17:12:50 +0200 |
| commit | e72e2dfe7c16ffbfbabf9cb24adc6d9f93a4fe37 (patch) | |
| tree | 5b7d4cf20cf35b6b3ae036f603ee71e81d313e12 /Makefile | |
| parent | gcov: disable tree-loop-im to reduce stack usage (diff) | |
| download | linux-e72e2dfe7c16ffbfbabf9cb24adc6d9f93a4fe37.tar.xz linux-e72e2dfe7c16ffbfbabf9cb24adc6d9f93a4fe37.zip | |
gcov: disable -Wmaybe-uninitialized warning
When gcov profiling is enabled, we see a lot of spurious warnings about
possibly uninitialized variables being used:
arch/arm/mm/dma-mapping.c: In function 'arm_coherent_iommu_map_page':
arch/arm/mm/dma-mapping.c:1085:16: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
drivers/clk/st/clk-flexgen.c: In function 'st_of_flexgen_setup':
drivers/clk/st/clk-flexgen.c:323:9: warning: 'num_parents' may be used uninitialized in this function [-Wmaybe-uninitialized]
kernel/cgroup.c: In function 'cgroup_mount':
kernel/cgroup.c:2119:11: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
All of these are false positives, so it seems better to just disable
the warnings whenever GCOV is enabled. Most users don't enable GCOV,
and based on a prior patch, it is now also disabled for 'allmodconfig'
builds, so there should be no downsides of doing this.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -368,7 +368,7 @@ AFLAGS_MODULE = LDFLAGS_MODULE = CFLAGS_KERNEL = AFLAGS_KERNEL = -CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im +CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im -Wno-maybe-uninitialized CFLAGS_KCOV = -fsanitize-coverage=trace-pc |