* Re: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:14 ` [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8 Ilya Maximets
@ 2019-01-14 16:27 ` Thomas Monjalon
2019-01-14 18:49 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2019-01-14 16:46 ` [dpdk-dev] " Richardson, Bruce
2019-01-14 16:50 ` Honnappa Nagarahalli
2 siblings, 1 reply; 8+ messages in thread
From: Thomas Monjalon @ 2019-01-14 16:27 UTC (permalink / raw)
To: Ilya Maximets; +Cc: dev, Pavan Nikhilesh, stable
14/01/2019 17:14, Ilya Maximets:
> In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> But 'rte_atomic.h' is a generic header that included to the
> external apps like OVS while building with DPDK. As a result,
> clang build of OVS fails on ARMv8 if DPDK built using gcc:
>
> include/generic/rte_atomic.h:215:9: error:
> implicit declaration of function '__atomic_exchange_2'
> is invalid in C99
> include/generic/rte_atomic.h:494:9: error:
> implicit declaration of function '__atomic_exchange_4'
> is invalid in C99
> include/generic/rte_atomic.h:772:9: error:
> implicit declaration of function '__atomic_exchange_8'
> is invalid in C99
>
> We need to check for current compiler, not the compiler used for
> DPDK build.
Right, API cannot rely on internal build system configuration.
> Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [dpdk-dev] [dpdk-stable] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:27 ` Thomas Monjalon
@ 2019-01-14 18:49 ` Thomas Monjalon
2019-01-14 19:06 ` Thomas Monjalon
0 siblings, 1 reply; 8+ messages in thread
From: Thomas Monjalon @ 2019-01-14 18:49 UTC (permalink / raw)
To: Ilya Maximets; +Cc: stable, dev, Pavan Nikhilesh, honnappa.nagarahalli
14/01/2019 17:27, Thomas Monjalon:
> 14/01/2019 17:14, Ilya Maximets:
> > In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> > But 'rte_atomic.h' is a generic header that included to the
> > external apps like OVS while building with DPDK. As a result,
> > clang build of OVS fails on ARMv8 if DPDK built using gcc:
> >
> > include/generic/rte_atomic.h:215:9: error:
> > implicit declaration of function '__atomic_exchange_2'
> > is invalid in C99
> > include/generic/rte_atomic.h:494:9: error:
> > implicit declaration of function '__atomic_exchange_4'
> > is invalid in C99
> > include/generic/rte_atomic.h:772:9: error:
> > implicit declaration of function '__atomic_exchange_8'
> > is invalid in C99
> >
> > We need to check for current compiler, not the compiler used for
> > DPDK build.
>
> Right, API cannot rely on internal build system configuration.
>
> > Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
>
> Acked-by: Thomas Monjalon <thomas@monjalon.net>
Applied (if armv8 typo), thanks
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [dpdk-dev] [dpdk-stable] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 18:49 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
@ 2019-01-14 19:06 ` Thomas Monjalon
0 siblings, 0 replies; 8+ messages in thread
From: Thomas Monjalon @ 2019-01-14 19:06 UTC (permalink / raw)
To: dev; +Cc: Ilya Maximets, stable, Pavan Nikhilesh, honnappa.nagarahalli
14/01/2019 19:49, Thomas Monjalon:
> 14/01/2019 17:27, Thomas Monjalon:
> > 14/01/2019 17:14, Ilya Maximets:
> > > In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> > > But 'rte_atomic.h' is a generic header that included to the
> > > external apps like OVS while building with DPDK. As a result,
> > > clang build of OVS fails on ARMv8 if DPDK built using gcc:
> > >
> > > include/generic/rte_atomic.h:215:9: error:
> > > implicit declaration of function '__atomic_exchange_2'
> > > is invalid in C99
> > > include/generic/rte_atomic.h:494:9: error:
> > > implicit declaration of function '__atomic_exchange_4'
> > > is invalid in C99
> > > include/generic/rte_atomic.h:772:9: error:
> > > implicit declaration of function '__atomic_exchange_8'
> > > is invalid in C99
> > >
> > > We need to check for current compiler, not the compiler used for
> > > DPDK build.
> >
> > Right, API cannot rely on internal build system configuration.
> >
> > > Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> > > Cc: stable@dpdk.org
> > >
> > > Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
> >
> > Acked-by: Thomas Monjalon <thomas@monjalon.net>
>
> Applied (if armv8 typo), thanks
correction: with armv8 typo fixed
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:14 ` [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8 Ilya Maximets
2019-01-14 16:27 ` Thomas Monjalon
@ 2019-01-14 16:46 ` Richardson, Bruce
2019-01-15 11:32 ` Ilya Maximets
2019-01-14 16:50 ` Honnappa Nagarahalli
2 siblings, 1 reply; 8+ messages in thread
From: Richardson, Bruce @ 2019-01-14 16:46 UTC (permalink / raw)
To: Ilya Maximets, dev, Thomas Monjalon; +Cc: Pavan Nikhilesh, stable
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ilya Maximets
> Sent: Monday, January 14, 2019 4:15 PM
> To: dev@dpdk.org; Thomas Monjalon <thomas@monjalon.net>
> Cc: Pavan Nikhilesh <pbhagavatula@marvell.com>; Ilya Maximets
> <i.maximets@samsung.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on
> armv8
>
> In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> But 'rte_atomic.h' is a generic header that included to the external apps
> like OVS while building with DPDK. As a result, clang build of OVS fails
> on ARMv8 if DPDK built using gcc:
>
> include/generic/rte_atomic.h:215:9: error:
> implicit declaration of function '__atomic_exchange_2'
> is invalid in C99
> include/generic/rte_atomic.h:494:9: error:
> implicit declaration of function '__atomic_exchange_4'
> is invalid in C99
> include/generic/rte_atomic.h:772:9: error:
> implicit declaration of function '__atomic_exchange_8'
> is invalid in C99
>
> We need to check for current compiler, not the compiler used for DPDK
> build.
>
> Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
> ---
> lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h
> b/lib/librte_eal/common/include/generic/rte_atomic.h
> index b99ba4688..d0c464fb1 100644
> --- a/lib/librte_eal/common/include/generic/rte_atomic.h
> +++ b/lib/librte_eal/common/include/generic/rte_atomic.h
> @@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst, uint16_t
> val); static inline uint16_t rte_atomic16_exchange(volatile uint16_t
> *dst, uint16_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST); @@ -495,7
> +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
> static inline uint32_t rte_atomic32_exchange(volatile uint32_t *dst,
> uint32_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST); @@ -777,7
> +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
> static inline uint64_t rte_atomic64_exchange(volatile uint64_t *dst,
> uint64_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);
> --
> 2.17.1
Is this really architecture-specific? Would the same issue not occur on e.g. x86 or PPC?
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:46 ` [dpdk-dev] " Richardson, Bruce
@ 2019-01-15 11:32 ` Ilya Maximets
0 siblings, 0 replies; 8+ messages in thread
From: Ilya Maximets @ 2019-01-15 11:32 UTC (permalink / raw)
To: Richardson, Bruce, dev, Thomas Monjalon; +Cc: Pavan Nikhilesh, stable
On 14.01.2019 19:46, Richardson, Bruce wrote:
>
>
>> -----Original Message-----
>> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ilya Maximets
>> Sent: Monday, January 14, 2019 4:15 PM
>> To: dev@dpdk.org; Thomas Monjalon <thomas@monjalon.net>
>> Cc: Pavan Nikhilesh <pbhagavatula@marvell.com>; Ilya Maximets
>> <i.maximets@samsung.com>; stable@dpdk.org
>> Subject: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on
>> armv8
>>
>> In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
>> But 'rte_atomic.h' is a generic header that included to the external apps
>> like OVS while building with DPDK. As a result, clang build of OVS fails
>> on ARMv8 if DPDK built using gcc:
>>
>> include/generic/rte_atomic.h:215:9: error:
>> implicit declaration of function '__atomic_exchange_2'
>> is invalid in C99
>> include/generic/rte_atomic.h:494:9: error:
>> implicit declaration of function '__atomic_exchange_4'
>> is invalid in C99
>> include/generic/rte_atomic.h:772:9: error:
>> implicit declaration of function '__atomic_exchange_8'
>> is invalid in C99
>>
>> We need to check for current compiler, not the compiler used for DPDK
>> build.
>>
>> Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
>> ---
>> lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h
>> b/lib/librte_eal/common/include/generic/rte_atomic.h
>> index b99ba4688..d0c464fb1 100644
>> --- a/lib/librte_eal/common/include/generic/rte_atomic.h
>> +++ b/lib/librte_eal/common/include/generic/rte_atomic.h
>> @@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst, uint16_t
>> val); static inline uint16_t rte_atomic16_exchange(volatile uint16_t
>> *dst, uint16_t val) { -#if defined(RTE_ARCH_ARM64) &&
>> defined(RTE_TOOLCHAIN_CLANG)
>> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
>> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
>> return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST); @@ -495,7
>> +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
>> static inline uint32_t rte_atomic32_exchange(volatile uint32_t *dst,
>> uint32_t val) { -#if defined(RTE_ARCH_ARM64) &&
>> defined(RTE_TOOLCHAIN_CLANG)
>> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
>> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
>> return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST); @@ -777,7
>> +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
>> static inline uint64_t rte_atomic64_exchange(volatile uint64_t *dst,
>> uint64_t val) { -#if defined(RTE_ARCH_ARM64) &&
>> defined(RTE_TOOLCHAIN_CLANG)
>> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
>> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
>> return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);
>> --
>> 2.17.1
>
> Is this really architecture-specific? Would the same issue not occur on e.g. x86 or PPC?
>
Yes. I looked a bit deeper and found that x86 build is also broken.
We have not encountered this problem earlier on other platforms because
CONFIG_RTE_FORCE_INTRINSICS enabled by default only for armv8.
I've sent a patch:
http://patches.dpdk.org/patch/49829/
Best regards, Ilya Maximets.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:14 ` [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8 Ilya Maximets
2019-01-14 16:27 ` Thomas Monjalon
2019-01-14 16:46 ` [dpdk-dev] " Richardson, Bruce
@ 2019-01-14 16:50 ` Honnappa Nagarahalli
2019-01-14 18:47 ` Thomas Monjalon
2 siblings, 1 reply; 8+ messages in thread
From: Honnappa Nagarahalli @ 2019-01-14 16:50 UTC (permalink / raw)
To: Ilya Maximets, dev, thomas; +Cc: Pavan Nikhilesh, stable, nd
>
> In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> But 'rte_atomic.h' is a generic header that included to the external apps like
> OVS while building with DPDK. As a result, clang build of OVS fails on ARMv8
^^^^^^
Typo, should be armv8.
Commit '40fd87486799' should have caught the typo issue. I don't want to do this for every patch 😊 Does 'check-git-log.sh' run automatically?
> if DPDK built using gcc:
>
> include/generic/rte_atomic.h:215:9: error:
> implicit declaration of function '__atomic_exchange_2'
> is invalid in C99
> include/generic/rte_atomic.h:494:9: error:
> implicit declaration of function '__atomic_exchange_4'
> is invalid in C99
> include/generic/rte_atomic.h:772:9: error:
> implicit declaration of function '__atomic_exchange_8'
> is invalid in C99
>
> We need to check for current compiler, not the compiler used for DPDK build.
>
> Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
> Cc: stable@dpdk.org
>
> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
> ---
> lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h
> b/lib/librte_eal/common/include/generic/rte_atomic.h
> index b99ba4688..d0c464fb1 100644
> --- a/lib/librte_eal/common/include/generic/rte_atomic.h
> +++ b/lib/librte_eal/common/include/generic/rte_atomic.h
> @@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst,
> uint16_t val); static inline uint16_t rte_atomic16_exchange(volatile uint16_t
> *dst, uint16_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST); @@ -
> 495,7 +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t
> val); static inline uint32_t rte_atomic32_exchange(volatile uint32_t *dst,
> uint32_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST); @@ -
> 777,7 +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t
> val); static inline uint64_t rte_atomic64_exchange(volatile uint64_t *dst,
> uint64_t val) { -#if defined(RTE_ARCH_ARM64) &&
> defined(RTE_TOOLCHAIN_CLANG)
> +#if defined(RTE_ARCH_ARM64) && defined(__clang__)
> return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); #else
> return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);
> --
> 2.17.1
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [dpdk-dev] [PATCH] eal: fix build of external apps with clang on armv8
2019-01-14 16:50 ` Honnappa Nagarahalli
@ 2019-01-14 18:47 ` Thomas Monjalon
0 siblings, 0 replies; 8+ messages in thread
From: Thomas Monjalon @ 2019-01-14 18:47 UTC (permalink / raw)
To: Honnappa Nagarahalli; +Cc: Ilya Maximets, dev, Pavan Nikhilesh, stable, nd
14/01/2019 17:50, Honnappa Nagarahalli:
> >
> > In case DPDK built using GCC, RTE_TOOLCHAIN_CLANG is not defined.
> > But 'rte_atomic.h' is a generic header that included to the external apps like
> > OVS while building with DPDK. As a result, clang build of OVS fails on ARMv8
> ^^^^^^
> Typo, should be armv8.
> Commit '40fd87486799' should have caught the typo issue. I don't want to do this for every patch 😊 Does 'check-git-log.sh' run automatically?
We are supposed to run it before submitting.
And tree maintainers run it before applying.
Anyway, it does check the title but not the message body.
^ permalink raw reply [flat|nested] 8+ messages in thread