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| author | Tiwei Bie <tiwei.btw@antgroup.com> | 2025-06-23 19:08:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 18:44:01 +0200 |
| commit | 78949b91a300bb19124e3c3eddd0d1d9976ca2fc (patch) | |
| tree | 6c5a87487685ca31a8af24d0c6579a91cbec8d6b /tools/perf/scripts/python/stackcollapse.py | |
| parent | 177be43ad18afcd08e99031ac66317f7f0a8b8c4 (diff) | |
um: vector: Reduce stack usage in vector_eth_configure()
[ Upstream commit 2d65fc13be85c336c56af7077f08ccd3a3a15a4a ]
When compiling with clang (19.1.7), initializing *vp using a compound
literal may result in excessive stack usage. Fix it by initializing the
required fields of *vp individually.
Without this patch:
$ objdump -d arch/um/drivers/vector_kern.o | ./scripts/checkstack.pl x86_64 0
...
0x0000000000000540 vector_eth_configure [vector_kern.o]:1472
...
With this patch:
$ objdump -d arch/um/drivers/vector_kern.o | ./scripts/checkstack.pl x86_64 0
...
0x0000000000000540 vector_eth_configure [vector_kern.o]:208
...
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202506221017.WtB7Usua-lkp@intel.com/
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20250623110829.314864-1-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions