> -----Original Message-----
> From: Phil Yang <phil.y...@arm.com>
> Sent: Monday, July 22, 2019 9:53 PM
> To: dev@dpdk.org
> Cc: tho...@monjalon.net; Jerin Jacob Kollanukkaran <jer...@marvell.com>;
> gage.e...@intel.com; hemant.agra...@nxp.com;
> honnappa.nagaraha...@arm.com; gavin...@arm.com; n...@arm.com
> Subject: [EXT] [PATCH v6 1/3] eal/arm64: add 128-bit atomic compare
> exchange
>
> Add 128-bit atomic compare exchange on aarch64.
>
> Suggested-by: Jerin Jacob <jer...@marvell.com>
> Signed-off-by: Phil Yang <phil.y...@arm.com>
> Tested-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
> Reviewed-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
>
> ---
> diff --git a/config/common_base b/config/common_base index
> 8ef75c2..de6d1e0 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -82,6 +82,8 @@ CONFIG_RTE_MAX_LCORE=128
> CONFIG_RTE_MAX_NUMA_NODES=8
> CONFIG_RTE_MAX_HEAPS=32
> CONFIG_RTE_MAX_MEMSEG_LISTS=64
Add new line here.
> +# Use LSE ATOMIC instructions
I think, you can change the comment to "Use ARM LSE ATOMIC instructions"
> +CONFIG_RTE_ARM_FEATURE_ATOMICS=n
This patches series has following check patch warning. Please fix it
With above fixes you can add my acked-by in 1/3 and 3/3 patches in next
revision.
I think, you can ignore following warning.
WARNING:MACRO_WITH_FLOW_CONTROL: Macros with flow control statements should be
avoided
[master]dell[dpdk.org] $ ./devtools/checkpatches.sh
### eal/arm64: add 128-bit atomic compare exchange
WARNING:LONG_LINE: line over 80 characters
#103: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:60:
+ rte_int128_t updated)
\
WARNING:LONG_LINE: line over 80 characters
#108: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:65:
+ */
\
WARNING:LINE_CONTINUATIONS: Avoid unnecessary line continuations
#108: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:65:
+ */
\
WARNING:LONG_LINE: line over 80 characters
#109: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:66:
+ register uint64_t x0 __asm("x0") = (uint64_t)old.val[0];
\
WARNING:LONG_LINE: line over 80 characters
#110: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:67:
+ register uint64_t x1 __asm("x1") = (uint64_t)old.val[1];
\
WARNING:LONG_LINE: line over 80 characters
#111: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:68:
+ register uint64_t x2 __asm("x2") = (uint64_t)updated.val[0];
\
WARNING:LONG_LINE: line over 80 characters
#112: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:69:
+ register uint64_t x3 __asm("x3") = (uint64_t)updated.val[1];
\
WARNING:LONG_LINE: line over 80 characters
#113: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:70:
+ asm volatile(
\
WARNING:LONG_LINE: line over 80 characters
#115: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:72:
+ : [old0] "+r" (x0),
\
WARNING:LONG_LINE: line over 80 characters
#116: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:73:
+ [old1] "+r" (x1)
\
WARNING:LONG_LINE: line over 80 characters
#118: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:75:
+ [upd1] "r" (x3),
\
WARNING:LONG_LINE: line over 80 characters
#119: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:76:
+ [dst] "r" (dst)
\
WARNING:LONG_LINE: line over 80 characters
#120: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:77:
+ : "memory");
\
WARNING:LONG_LINE: line over 80 characters
#121: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:78:
+ old.val[0] = x0;
\
WARNING:LONG_LINE: line over 80 characters
#122: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:79:
+ old.val[1] = x1;
\
WARNING:LONG_LINE: line over 80 characters
#123: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:80:
+ return old;
\
WARNING:LONG_LINE: line over 80 characters
#135: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:92:
+ rte_int128_t ret;
\
WARNING:LONG_LINE: line over 80 characters
#136: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:93:
+ asm volatile(
\
WARNING:LONG_LINE: line over 80 characters
#138: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:95:
+ : "=&r" (ret.val[0]),
\
WARNING:LONG_LINE: line over 80 characters
#139: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:96:
+ "=&r" (ret.val[1])
\
WARNING:LONG_LINE: line over 80 characters
#140: FILE: lib/librte_eal/common/include/arch/arm/rte_atomic_64.h:97:
+ : "Q" (src->val[0])
\
WARNING:LONG_LINE: line over 80 characters
