On Tue, Sep 10, 2019 at 08:46:07AM +0100, Will Deacon wrote:
> On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> > On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> > when CONFIG_OPTIMIZE_INLINING is set.
>
> Hmm. Given that CONFIG_OPTIMIZE_INLINING has also bee
On Tue, Sep 10, 2019 at 3:24 PM Will Deacon wrote:
> On Tue, Sep 10, 2019 at 10:04:24AM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 10, 2019 at 9:46 AM Will Deacon wrote:
> > - In theory, CONFIG_OPTIMIZE_INLINING is the right thing to do -- the
> > compilers
> > also make some particularly bad
On Tue, Sep 10, 2019 at 10:04:24AM +0200, Arnd Bergmann wrote:
> On Tue, Sep 10, 2019 at 9:46 AM Will Deacon wrote:
> >
> > On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> > > On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> > > when CONFIG_OPTIMIZE_INLINING
On Tue, Sep 10, 2019 at 11:38:37AM +0200, Arnd Bergmann wrote:
> On Tue, Sep 10, 2019 at 11:23 AM Andrew Murray wrote:
>
> >
> > > arch/arm64/include/asm/cmpxchg.h | 15 ---
> > > 1 file changed, 8 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/arch/arm64/include/asm/cmpxchg.
On Tue, Sep 10, 2019 at 6:38 PM Arnd Bergmann wrote:
>
> On Tue, Sep 10, 2019 at 11:23 AM Andrew Murray wrote:
>
> >
> > > arch/arm64/include/asm/cmpxchg.h | 15 ---
> > > 1 file changed, 8 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/arch/arm64/include/asm/cmpxchg.h
> > >
On Tue, Sep 10, 2019 at 11:23 AM Andrew Murray wrote:
>
> > arch/arm64/include/asm/cmpxchg.h | 15 ---
> > 1 file changed, 8 insertions(+), 7 deletions(-)
> >
> > diff --git a/arch/arm64/include/asm/cmpxchg.h
> > b/arch/arm64/include/asm/cmpxchg.h
> > index a1398f2f9994..fd64dc8a235
On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> when CONFIG_OPTIMIZE_INLINING is set.
> Clang then fails a compile-time assertion, because it cannot tell at
> compile time what the size of the argument is:
>
>
On Tue, Sep 10, 2019 at 9:46 AM Will Deacon wrote:
>
> On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> > On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> > when CONFIG_OPTIMIZE_INLINING is set.
>
> Hmm. Given that CONFIG_OPTIMIZE_INLINING has also been shown
On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> when CONFIG_OPTIMIZE_INLINING is set.
Hmm. Given that CONFIG_OPTIMIZE_INLINING has also been shown to break
assignment of local 'register' variables on GCC, perha
On Mon, Sep 09, 2019 at 10:21:35PM +0200, Arnd Bergmann wrote:
> On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> when CONFIG_OPTIMIZE_INLINING is set.
> Clang then fails a compile-time assertion, because it cannot tell at
> compile time what the size of the argument is:
>
>
On Mon, Sep 9, 2019 at 2:06 PM Nick Desaulniers wrote:
>
> On Mon, Sep 9, 2019 at 1:21 PM Arnd Bergmann wrote:
> >
> > On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> > when CONFIG_OPTIMIZE_INLINING is set.
> > Clang then fails a compile-time assertion, because it cannot te
On Mon, Sep 9, 2019 at 1:21 PM Arnd Bergmann wrote:
>
> On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
> when CONFIG_OPTIMIZE_INLINING is set.
> Clang then fails a compile-time assertion, because it cannot tell at
> compile time what the size of the argument is:
>
> mm/memcon
On arm64 build with clang, sometimes the __cmpxchg_mb is not inlined
when CONFIG_OPTIMIZE_INLINING is set.
Clang then fails a compile-time assertion, because it cannot tell at
compile time what the size of the argument is:
mm/memcontrol.o: In function `__cmpxchg_mb':
memcontrol.c:(.text+0x1a4c): u
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