From: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx> Date: Mon, 2 Jan 2023 17:14:31 +0100 > On Fri, Jun 24, 2022 at 02:13:06PM +0200, Alexander Lobakin wrote: > > Move generic non-atomic bitops from the asm-generic header which > > gets included only when there are no architecture-specific > > alternatives, to a separate independent file to make them always > > available. > > Almost no actual code changes, only one comment added to > > generic_test_bit() saying that it's an atomic operation itself > > and thus `volatile` must always stay there with no cast-aways. > > > > Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> # comment > > Suggested-by: Marco Elver <elver@xxxxxxxxxx> # reference to kernel-doc > > Signed-off-by: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx> > > Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > > Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > > --- > > .../asm-generic/bitops/generic-non-atomic.h | 130 ++++++++++++++++++ > > include/asm-generic/bitops/non-atomic.h | 110 ++------------- > > 2 files changed, 138 insertions(+), 102 deletions(-) > > create mode 100644 include/asm-generic/bitops/generic-non-atomic.h > > > > Hi, > > this patch gives me a headache when trying to run sparse against a module. > > Olek please help :D It was fixed shortly after the build bots turned on on the original series with [0]. Hovewer, no release tag's been made after the fix. There's also a short discussion regarding packaging Sparse 0.6.4 for Debian with that fix cherry-picked[1], not sure if it led anywhere. > > $ sudo make C=2 -C . M=drivers/net/ethernet/intel/ice/ > make: Entering directory '/home/mfijalko/bpf-next' > CHECK drivers/net/ethernet/intel/ice/ice_main.c > drivers/net/ethernet/intel/ice/ice_main.c: note: in included file (through include/linux/bitops.h, include/linux/kernel.h, drivers/net/ethernet/intel/ice/ice.h): > ./arch/x86/include/asm/bitops.h:66:1: warning: unreplaced symbol 'return' [...] > drivers/net/ethernet/intel/ice/ice_main.c: note: in included file (through arch/x86/include/asm/bitops.h, include/linux/bitops.h, include/linux/kernel.h, drivers/net/ethernet/intel/ice/ice.h): > ./include/asm-generic/bitops/instrumented-non-atomic.h:142:9: warning: unreplaced symbol 'return' > ./include/asm-generic/bitops/instrumented-non-atomic.h:139:1: warning: unreplaced symbol 'return' > > that's for a single file, there's no point in including same output for > every other file being checked. > > Thanks, > Maciej [0] https://git.kernel.org/pub/scm/devel/sparse/sparse.git/commit/?id=0e1aae55e49cad7ea43848af5b58ff0f57e7af99 [1] https://lore.kernel.org/all/Yr7kPM1wLZnOqxOA@xxxxxxxxxxxxxxxxxx Thanks, Olek
