# git rev-parse -q --verify 1a288d0d920dfb9747bbefc8d601a971885f470f^{commit}
1a288d0d920dfb9747bbefc8d601a971885f470f
already have revision, skipping fetch
# git checkout -q -f -B kisskb 1a288d0d920dfb9747bbefc8d601a971885f470f
# git clean -qxdf
# < git log -1
# commit 1a288d0d920dfb9747bbefc8d601a971885f470f
# Author: Denis Efremov <efremov@linux.com>
# Date:   Sun Jul 28 13:09:06 2019 +0300
# 
#     modpost: check for static EXPORT_SYMBOL* functions
#     
#     This patch adds a check to warn about static EXPORT_SYMBOL* functions
#     during the modpost. In most of the cases, a static symbol marked for
#     exporting is an odd combination that should be fixed either by deleting
#     the exporting mark or by removing the static attribute and adding the
#     appropriate declaration to headers.
#     
#     This check could help to detect the following problems:
#     1. 550113d4e9f5 ("i2c: add newly exported functions to the header, too")
#     2. 54638c6eaf44 ("net: phy: make exported variables non-static")
#     3. 98ef2046f28b ("mm: remove the exporting of totalram_pages")
#     4. 73df167c819e ("s390/zcrypt: remove the exporting of ap_query_configuration")
#     5. a57caf8c527f ("sunrpc/cache: remove the exporting of cache_seq_next")
#     6. e4e4730698c9 ("crypto: skcipher - remove the exporting of skcipher_walk_next")
#     7. 14b4c48bb1ce ("gve: Remove the exporting of gve_probe")
#     8. 9b79ee9773a8 ("scsi: libsas: remove the exporting of sas_wait_eh")
#     9. ...
#     
#     Build time impact, allmodconfig, Dell XPS 15 9570 (measurements 3x):
#     $ make mrproper; make allmodconfig; time make -j12; \
#       git checkout HEAD~1; \
#       make mrproper; make allmodconfig; time make -j12
#     1.
#        (with patch) 17635,94s user 1895,54s system 1085% cpu 29:59,22 total
#        (w/o  patch) 17275,42s user 1803,87s system 1112% cpu 28:35,66 total
#     2.
#        (with patch) 17369,51s user 1763,28s system 1111% cpu 28:41,47 total
#        (w/o  patch) 16880,50s user 1670,93s system 1113% cpu 27:46,56 total
#     3.
#        (with patch) 17937,88s user 1842,53s system 1109% cpu 29:42,26 total
#        (w/o  patch) 17267,55s user 1725,09s system 1111% cpu 28:28,17 total
#     
#     Thus, the current implementation adds approx. 1 min for allmodconfig.
#     
#     Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
#     Signed-off-by: Denis Efremov <efremov@linux.com>
#     Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 1a288d0d920dfb9747bbefc8d601a971885f470f
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/kbuild_ppc64_defconfig+NO_KVM_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64_defconfig
# Added to kconfig CONFIG_KVM_BOOK3S_64=n
# Added to kconfig CONFIG_KVM=n
# yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/kbuild_ppc64_defconfig+NO_KVM_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=powerpc O=/kisskb/build/kbuild_ppc64_defconfig+NO_KVM_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2591:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.28':
/kisskb/src/net/bridge/br_netlink.c:648:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1676:3: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/futex.c:1651:6: note: 'oldval' was declared here
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2065:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/devlink.c: In function 'devlink_fmsg_prepare_skb':
/kisskb/src/net/core/devlink.c:4443:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1744:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
WARNING: "ahci_em_messages" [vmlinux] is the static EXPORT_SYMBOL_GPL
WARNING: "ftrace_set_clr_event" [vmlinux] is the static EXPORT_SYMBOL_GPL
WARNING: "empty_zero_page" [vmlinux] is the static EXPORT_SYMBOL
WARNING: "jiffies" [vmlinux] is the static EXPORT_SYMBOL
WARNING: "ahci_em_messages" [vmlinux] is the static EXPORT_SYMBOL_GPL
WARNING: "ftrace_set_clr_event" [vmlinux] is the static EXPORT_SYMBOL_GPL
WARNING: "empty_zero_page" [vmlinux] is the static EXPORT_SYMBOL
Completed OK
# rm -rf /kisskb/build/kbuild_ppc64_defconfig+NO_KVM_powerpc-gcc4.6
# Build took: 0:01:39.452212