Please ignoe this mail. I send it by mistake. On Sat, Jun 2, 2018 at 8:14 PM, Souptick Joarder <jrdr.linux@xxxxxxxxx> wrote: > On Wed, May 30, 2018 at 4:46 PM, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: >> On Wed, May 30, 2018 at 09:10:47AM +0530, Souptick Joarder wrote: >>> On Tue, May 29, 2018 at 11:04 PM, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: >>> > I see: >>> > >>> > mm/gup.c:817:15: warning: invalid assignment: |= >>> > mm/gup.c:817:15: left side has type int >>> > mm/gup.c:817:15: right side has type restricted vm_fault_t >>> > >>> > are you building with 'c=2' or 'C=2'? >>> >>> Building with C=2. >>> Do I need to enable any separate FLAG ? >> >> Nope. Here's what I have: >> >> willy@bobo:~/kernel/souptick$ make C=2 mm/gup.o >> CHK include/config/kernel.release >> CHK include/generated/uapi/linux/version.h >> CHK include/generated/utsrelease.h >> CHECK arch/x86/purgatory/purgatory.c >> CHECK arch/x86/purgatory/sha256.c >> CHECK arch/x86/purgatory/string.c >> arch/x86/purgatory/../boot/string.c:134:6: warning: symbol 'simple_strtol' was not declared. Should it be static? >> CHK include/generated/bounds.h >> CHK include/generated/timeconst.h >> CHK include/generated/asm-offsets.h >> CALL scripts/checksyscalls.sh >> DESCEND objtool >> CHECK scripts/mod/empty.c >> CHK scripts/mod/devicetable-offsets.h >> CHECK mm/gup.c >> mm/gup.c:817:15: warning: invalid assignment: |= >> mm/gup.c:817:15: left side has type int >> mm/gup.c:817:15: right side has type restricted vm_fault_t >> CC mm/gup.o >> > > Matthew, > > Due to some unidentified error still not able to catch this warning > in (X86_64 + sparse) compilation. It is constantly showing below error. > > Documents/linux-4.17-rc7$ make C=2 -j4 mm/gup.o > CHK include/config/kernel.release > CHK include/generated/uapi/linux/version.h > DESCEND objtool > CHK include/generated/utsrelease.h > CHECK scripts/mod/empty.c > CHK scripts/mod/devicetable-offsets.h > CHK include/generated/bounds.h > CHK include/generated/timeconst.h > CHK include/generated/asm-offsets.h > CALL scripts/checksyscalls.sh > CHECK mm/gup.c > mm/gup.c:394:17: error: undefined identifier '__COUNTER__' > mm/gup.c:439:9: error: undefined identifier '__COUNTER__' > mm/gup.c:441:9: error: undefined identifier '__COUNTER__' > mm/gup.c:443:9: error: undefined identifier '__COUNTER__' > mm/gup.c:508:17: error: undefined identifier '__COUNTER__' > mm/gup.c:716:25: error: undefined identifier '__COUNTER__' > mm/gup.c:826:17: error: undefined identifier '__COUNTER__' > mm/gup.c:863:17: error: undefined identifier '__COUNTER__' > mm/gup.c:865:17: error: undefined identifier '__COUNTER__' > mm/gup.c:882:25: error: undefined identifier '__COUNTER__' > mm/gup.c:883:25: error: undefined identifier '__COUNTER__' > mm/gup.c:920:25: error: undefined identifier '__COUNTER__' > ./include/linux/hugetlb.h:239:9: error: undefined identifier '__COUNTER__' > > > But able to capture it in (powerpc + sparse) compilation. > I will fix it in v2. > > /Documents/linux-4.17-rc7$ make C=2 ARCH=powerpc > CROSS_COMPILE=powerpc-linux-gnu- mm/gup.o > CHK include/config/kernel.release > CHK include/generated/uapi/linux/version.h > CHK include/generated/utsrelease.h > CHK include/generated/bounds.h > CHK include/generated/timeconst.h > CHK include/generated/asm-offsets.h > CALL scripts/checksyscalls.sh > CHECK scripts/mod/empty.c > CHK scripts/mod/devicetable-offsets.h > CHECK mm/gup.c > ./arch/powerpc/include/asm/book3s/64/pgtable.h:669:24: warning: > restricted __be64 degrades to integer > mm/gup.c:820:15: warning: incorrect type in assignment (different base types) > mm/gup.c:820:15: expected int [signed] major > mm/gup.c:820:15: got restricted vm_fault_t > mm/gup.c:1247:24: warning: expression using sizeof bool > mm/gup.c:1247:24: warning: expression using sizeof(void) > mm/gup.c:1247:24: warning: expression using sizeof(void) > ./arch/powerpc/include/asm/book3s/64/pgtable.h:667:20: warning: > incorrect type in initializer (different base types) > ./arch/powerpc/include/asm/book3s/64/pgtable.h:667:20: expected > unsigned long long [unsigned] [usertype] mask > ./arch/powerpc/include/asm/book3s/64/pgtable.h:667:20: got > restricted __be64 [usertype] <noident> > mm/gup.c:1735:6: warning: symbol 'gup_fast_permitted' was not > declared. Should it be static? > CC mm/gup.o > > > Sparse is throwing below warning -> > > /Documents/linux-4.17-rc7$ make C=2 ARCH=powerpc > CROSS_COMPILE=powerpc-linux-gnu- mm/hugetlb.o > CHK include/config/kernel.release > CHK include/generated/uapi/linux/version.h > CHK include/generated/utsrelease.h > CHK include/generated/bounds.h > CHK include/generated/timeconst.h > CHK include/generated/asm-offsets.h > CALL scripts/checksyscalls.sh > CHECK scripts/mod/empty.c > CHK scripts/mod/devicetable-offsets.h > CHECK mm/hugetlb.c > mm/hugetlb.c:3778:33: warning: restricted vm_fault_t degrades to integer > mm/hugetlb.c:3777:31: warning: restricted vm_fault_t degrades to integer > mm/hugetlb.c:3777:29: warning: incorrect type in assignment (different > base types) > mm/hugetlb.c:3777:29: expected restricted vm_fault_t [assigned] > [usertype] ret > mm/hugetlb.c:3777:29: got unsigned int > mm/hugetlb.c:3895:33: warning: restricted vm_fault_t degrades to integer > mm/hugetlb.c:3894:32: warning: restricted vm_fault_t degrades to integer > mm/hugetlb.c:3894:56: warning: incorrect type in return expression > (different base types) > mm/hugetlb.c:3894:56: expected restricted vm_fault_t > mm/hugetlb.c:3894:56: got unsigned int
