From: David Marchand <david.marchand@redhat.com>
To: Gavin Hu <gavin.hu@arm.com>
Cc: dev <dev@dpdk.org>, nd <nd@arm.com>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
Thomas Monjalon <thomas@monjalon.net>,
Stephen Hemminger <stephen@networkplumber.org>,
Hemant Agrawal <hemant.agrawal@nxp.com>,
Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
Pavan Nikhilesh <pbhagavatula@marvell.com>,
Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
"Ruifeng Wang (Arm Technology China)" <ruifeng.wang@arm.com>,
Phil Yang <phil.yang@arm.com>,
Steve Capper <steve.capper@arm.com>
Subject: Re: [dpdk-dev] [PATCH v11 2/5] eal: add the APIs to wait until equal
Date: Sun, 27 Oct 2019 21:49:39 +0100 [thread overview]
Message-ID: <CAJFAV8zQ7vv8uawkt5AF0Q5ATcwkHmhOPAUbKFZV_1XPC6kO0Q@mail.gmail.com> (raw)
In-Reply-To: <1572180765-49767-3-git-send-email-gavin.hu@arm.com>
On Sun, Oct 27, 2019 at 1:53 PM Gavin Hu <gavin.hu@arm.com> wrote:
[snip]
> diff --git a/lib/librte_eal/common/include/arch/arm/rte_pause_64.h b/lib/librte_eal/common/include/arch/arm/rte_pause_64.h
> index 93895d3..1680d7a 100644
> --- a/lib/librte_eal/common/include/arch/arm/rte_pause_64.h
> +++ b/lib/librte_eal/common/include/arch/arm/rte_pause_64.h
[snip]
> @@ -17,6 +23,188 @@ static inline void rte_pause(void)
> asm volatile("yield" ::: "memory");
> }
>
> +/**
> + * Send an event to quit WFE.
> + */
> +static inline void rte_sevl(void);
> +
> +/**
> + * Put processor into low power WFE(Wait For Event) state
> + */
> +static inline void rte_wfe(void);
> +
> +#ifdef RTE_ARM_USE_WFE
> +static inline void rte_sevl(void)
> +{
> + asm volatile("sevl" : : : "memory");
> +}
> +
> +static inline void rte_wfe(void)
> +{
> + asm volatile("wfe" : : : "memory");
> +}
> +#else
> +static inline void rte_sevl(void)
> +{
> +}
> +static inline void rte_wfe(void)
> +{
> + rte_pause();
> +}
> +#endif
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
experimental?
Just complaining on the principle, you missed the __rte_experimental
in such a case.
But this API is a no go for me, see below.
> + *
> + * Atomic exclusive load from addr, it returns the 16-bit content of *addr
> + * while making it 'monitored',when it is written by someone else, the
> + * 'monitored' state is cleared and a event is generated implicitly to exit
> + * WFE.
> + *
> + * @param addr
> + * A pointer to the memory location.
> + * @param memorder
> + * The valid memory order variants are __ATOMIC_ACQUIRE and __ATOMIC_RELAXED.
> + * These map to C++11 memory orders with the same names, see the C++11 standard
> + * the GCC wiki on atomic synchronization for detailed definitions.
> + */
> +static __rte_always_inline uint16_t
> +rte_atomic_load_ex_16(volatile uint16_t *addr, int memorder);
This API does not make sense for anything but arm, so this prefix is not good.
On arm, when RTE_ARM_USE_WFE is undefined, why would you need it?
A non exclusive load is enough since you don't want to use wfe.
[snip]
> +
> +static __rte_always_inline uint16_t
> +rte_atomic_load_ex_16(volatile uint16_t *addr, int memorder)
> +{
> + uint16_t tmp;
> + assert((memorder == __ATOMIC_ACQUIRE)
> + || (memorder == __ATOMIC_RELAXED));
> + if (memorder == __ATOMIC_ACQUIRE)
> + asm volatile("ldaxrh %w[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + else if (memorder == __ATOMIC_RELAXED)
> + asm volatile("ldxrh %w[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + return tmp;
> +}
> +
> +static __rte_always_inline uint32_t
> +rte_atomic_load_ex_32(volatile uint32_t *addr, int memorder)
> +{
> + uint32_t tmp;
> + assert((memorder == __ATOMIC_ACQUIRE)
> + || (memorder == __ATOMIC_RELAXED));
> + if (memorder == __ATOMIC_ACQUIRE)
> + asm volatile("ldaxr %w[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + else if (memorder == __ATOMIC_RELAXED)
> + asm volatile("ldxr %w[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + return tmp;
> +}
> +
> +static __rte_always_inline uint64_t
> +rte_atomic_load_ex_64(volatile uint64_t *addr, int memorder)
> +{
> + uint64_t tmp;
> + assert((memorder == __ATOMIC_ACQUIRE)
> + || (memorder == __ATOMIC_RELAXED));
> + if (memorder == __ATOMIC_ACQUIRE)
> + asm volatile("ldaxr %x[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + else if (memorder == __ATOMIC_RELAXED)
> + asm volatile("ldxr %x[tmp], [%x[addr]]"
> + : [tmp] "=&r" (tmp)
> + : [addr] "r"(addr)
> + : "memory");
> + return tmp;
> +}
> +
> +#ifdef RTE_WAIT_UNTIL_EQUAL_ARCH_DEFINED
> +static __rte_always_inline void
> +rte_wait_until_equal_16(volatile uint16_t *addr, uint16_t expected,
> +int memorder)
> +{
> + if (__atomic_load_n(addr, memorder) != expected) {
> + rte_sevl();
> + do {
> + rte_wfe();
We are in the RTE_WAIT_UNTIL_EQUAL_ARCH_DEFINED case.
rte_wfe() is always asm volatile("wfe" : : : "memory");
> + } while (rte_atomic_load_ex_16(addr, memorder) != expected);
> + }
> +}
> +
> +static __rte_always_inline void
> +rte_wait_until_equal_32(volatile uint32_t *addr, uint32_t expected,
> +int memorder)
> +{
> + if (__atomic_load_n(addr, memorder) != expected) {
> + rte_sevl();
> + do {
> + rte_wfe();
> + } while (__atomic_load_n(addr, memorder) != expected);
> + }
> +}
The while() should be with an exclusive load.
I will submit a v12 with those comments addressed so that we move
forward for rc2.
But it won't make it in rc1, sorry.
--
David Marchand
next prev parent reply other threads:[~2019-10-27 20:49 UTC|newest]
Thread overview: 168+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-30 16:21 [dpdk-dev] [RFC 0/5] use WFE for locks and ring on aarch64 Gavin Hu
2019-06-30 16:21 ` [dpdk-dev] [RFC 1/5] eal: add the APIs to wait until equal Gavin Hu
2019-06-30 20:27 ` Stephen Hemminger
2019-07-01 7:16 ` Gavin Hu (Arm Technology China)
2019-07-01 7:43 ` Thomas Monjalon
2019-07-02 14:07 ` Gavin Hu (Arm Technology China)
2019-07-01 9:58 ` Pavan Nikhilesh Bhagavatula
2019-07-02 14:08 ` Gavin Hu (Arm Technology China)
2019-06-30 16:21 ` [dpdk-dev] [RFC 2/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-06-30 16:21 ` [dpdk-dev] [RFC 3/5] ring: use wfe to wait for ring tail update " Gavin Hu
2019-06-30 16:21 ` [dpdk-dev] [RFC 4/5] spinlock: use wfe to reduce contention " Gavin Hu
2019-06-30 16:21 ` [dpdk-dev] [RFC 5/5] config: add WFE config entry for aarch64 Gavin Hu
2019-06-30 20:29 ` [dpdk-dev] [RFC 0/5] use WFE for locks and ring on aarch64 Stephen Hemminger
2019-07-01 9:12 ` Gavin Hu (Arm Technology China)
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 " Gavin Hu
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 1/5] eal: add the APIs to wait until equal Gavin Hu
2019-07-20 6:46 ` [dpdk-dev] [EXT] " Pavan Nikhilesh Bhagavatula
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 2/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-07-20 6:57 ` Pavan Nikhilesh Bhagavatula
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 3/5] ring: use wfe to wait for ring tail update " Gavin Hu
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 4/5] spinlock: use wfe to reduce contention " Gavin Hu
2019-07-20 6:59 ` Pavan Nikhilesh Bhagavatula
2019-07-03 8:58 ` [dpdk-dev] [RFC v2 5/5] config: add WFE config entry for aarch64 Gavin Hu
2019-07-20 7:03 ` Pavan Nikhilesh Bhagavatula
2019-07-23 15:47 ` Gavin Hu (Arm Technology China)
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 0/5] use WFE for locks and ring on aarch64 Gavin Hu
2019-07-23 19:15 ` Honnappa Nagarahalli
2019-07-23 21:27 ` Thomas Monjalon
2019-07-24 2:44 ` Honnappa Nagarahalli
2019-07-24 7:43 ` Thomas Monjalon
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 1/5] eal: add the APIs to wait until equal Gavin Hu
2019-07-24 11:52 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-24 18:10 ` Gavin Hu (Arm Technology China)
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 2/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 3/5] ring: use wfe to wait for ring tail update " Gavin Hu
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 4/5] spinlock: use wfe to reduce contention " Gavin Hu
2019-07-24 12:17 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-07-23 15:43 ` [dpdk-dev] [PATCH v3 5/5] config: add WFE config entry for aarch64 Gavin Hu
2019-07-23 18:05 ` Stephen Hemminger
2019-07-23 19:10 ` Honnappa Nagarahalli
2019-07-24 17:59 ` Gavin Hu (Arm Technology China)
2019-07-24 12:25 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 0/6] use WFE for locks and ring on aarch64 Gavin Hu
2019-10-16 8:08 ` David Marchand
2019-10-24 20:26 ` David Christensen
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 1/6] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 2/6] eal: add the APIs to wait until equal Gavin Hu
2019-09-11 12:26 ` Jerin Jacob
2019-09-12 8:25 ` Gavin Hu (Arm Technology China)
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 3/6] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 4/6] ring: use wfe to wait for ring tail update " Gavin Hu
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 5/6] spinlock: use wfe to reduce contention " Gavin Hu
[not found] ` <CY4PR1801MB1863AF9695BB10930E817D78DEB00@CY4PR1801MB1863.namprd18.prod.outlook.com>
[not found] ` <VI1PR08MB5376BEBCC1FD1E03F0B8A8848FB00@VI1PR08MB5376.eurprd08.prod.outlook.com>
2019-09-14 15:21 ` [dpdk-dev] [EXT] " Gavin Hu (Arm Technology China)
2019-08-22 6:12 ` [dpdk-dev] [PATCH v4 6/6] config: add WFE config entry for aarch64 Gavin Hu
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 0/8] use WFE " Gavin Hu
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 1/8] config: add WFE config entry " Gavin Hu
2019-09-12 15:48 ` Jerin Jacob
2019-09-13 16:01 ` Gavin Hu (Arm Technology China)
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 2/8] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 3/8] eal: add the APIs to wait until equal Gavin Hu
2019-09-12 16:11 ` Jerin Jacob
2019-09-13 17:05 ` Gavin Hu (Arm Technology China)
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 4/8] spinlock: use wfe to reduce contention on aarch64 Gavin Hu
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 5/8] ticketlock: use new API " Gavin Hu
2019-09-12 16:14 ` Jerin Jacob
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 6/8] ring: use wfe to wait for ring tail update " Gavin Hu
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 7/8] net/thunderx: use new API to save cycles " Gavin Hu
2019-09-12 16:15 ` Jerin Jacob
2019-09-12 11:24 ` [dpdk-dev] [PATCH v5 8/8] event/opdl: " Gavin Hu
2019-09-12 16:16 ` Jerin Jacob
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 0/7] use WFE for aarch64 Gavin Hu
2019-09-26 13:41 ` Jerin Jacob
2019-09-27 5:45 ` Gavin Hu (Arm Technology China)
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 1/7] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 2/7] eal: add the APIs to wait until equal Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 3/7] spinlock: use wfe to reduce contention on aarch64 Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 4/7] ticketlock: use new API " Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 5/7] ring: use wfe to wait for ring tail update " Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 6/7] net/thunderx: use new API to save cycles " Gavin Hu
2019-09-14 14:59 ` [dpdk-dev] [PATCH v6 7/7] event/opdl: " Gavin Hu
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 0/7] use WFE for aarch64 Gavin Hu
2019-10-17 18:37 ` David Marchand
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 1/7] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-09-27 8:24 ` Hemant Agrawal
2019-10-17 15:06 ` David Marchand
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 2/7] eal: add the APIs to wait until equal Gavin Hu
2019-09-27 11:03 ` Jerin Jacob
2019-10-17 13:14 ` Ananyev, Konstantin
2019-10-21 7:21 ` Gavin Hu (Arm Technology China)
2019-10-17 15:45 ` David Marchand
2019-10-21 7:38 ` Gavin Hu (Arm Technology China)
2019-10-21 19:17 ` David Marchand
2019-10-17 16:44 ` Ananyev, Konstantin
2019-10-23 16:20 ` Gavin Hu (Arm Technology China)
2019-10-23 16:29 ` Gavin Hu (Arm Technology China)
2019-10-24 10:21 ` Ananyev, Konstantin
2019-10-24 10:52 ` Gavin Hu (Arm Technology China)
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 3/7] spinlock: use wfe to reduce contention on aarch64 Gavin Hu
2019-10-17 18:27 ` David Marchand
2019-10-18 5:45 ` Gavin Hu (Arm Technology China)
2019-10-21 7:27 ` Gavin Hu (Arm Technology China)
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 4/7] ticketlock: use new API " Gavin Hu
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 5/7] ring: use wfe to wait for ring tail update " Gavin Hu
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 6/7] net/thunderx: use new API to save cycles " Gavin Hu
2019-09-27 5:41 ` [dpdk-dev] [PATCH v7 7/7] event/opdl: " Gavin Hu
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 0/6] use WFE for aarch64 Gavin Hu
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 1/6] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-10-21 19:00 ` David Marchand
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 2/6] eal: add the APIs to wait until equal Gavin Hu
2019-10-21 19:19 ` David Marchand
2019-10-22 9:36 ` Ananyev, Konstantin
2019-10-22 10:17 ` David Marchand
2019-10-22 16:05 ` Gavin Hu (Arm Technology China)
2019-10-22 16:03 ` Gavin Hu (Arm Technology China)
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 3/6] spinlock: use wfe to reduce contention on aarch64 Gavin Hu
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 4/6] ticketlock: use new API " Gavin Hu
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 5/6] net/thunderx: use new API to save cycles " Gavin Hu
2019-10-21 9:47 ` [dpdk-dev] [PATCH v8 6/6] event/opdl: " Gavin Hu
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 0/5] use WFE for aarch64 Gavin Hu
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 1/5] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 2/5] eal: add the APIs to wait until equal Gavin Hu
2019-10-24 13:52 ` Ananyev, Konstantin
2019-10-24 13:57 ` Ananyev, Konstantin
2019-10-24 17:00 ` Gavin Hu (Arm Technology China)
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 3/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 4/5] net/thunderx: use new API to save cycles " Gavin Hu
2019-10-24 10:42 ` [dpdk-dev] [PATCH v9 5/5] event/opdl: " Gavin Hu
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 0/5] use WFE for aarch64 Gavin Hu
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 1/5] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 2/5] eal: add the APIs to wait until equal Gavin Hu
2019-10-25 17:27 ` Ananyev, Konstantin
2019-10-27 13:03 ` Gavin Hu (Arm Technology China)
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 3/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 4/5] net/thunderx: use new API to save cycles " Gavin Hu
2019-10-25 15:39 ` [dpdk-dev] [PATCH v10 5/5] event/opdl: " Gavin Hu
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 0/5] use WFE for aarch64 Gavin Hu
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 1/5] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 2/5] eal: add the APIs to wait until equal Gavin Hu
2019-10-27 20:49 ` David Marchand [this message]
2019-10-28 5:08 ` Gavin Hu (Arm Technology China)
2019-10-27 22:19 ` Ananyev, Konstantin
2019-10-28 5:04 ` Gavin Hu (Arm Technology China)
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 3/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 4/5] net/thunderx: use new API to save cycles " Gavin Hu
2019-10-27 12:52 ` [dpdk-dev] [PATCH v11 5/5] event/opdl: " Gavin Hu
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 0/5] use WFE for aarch64 Gavin Hu
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 1/5] bus/fslmc: fix the conflicting dmb function Gavin Hu
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 2/5] eal: add the APIs to wait until equal Gavin Hu
2019-11-07 15:03 ` Ananyev, Konstantin
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 3/5] ticketlock: use new API to reduce contention on aarch64 Gavin Hu
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 4/5] net/thunderx: use new API to save cycles " Gavin Hu
2019-11-04 15:32 ` [dpdk-dev] [PATCH v12 5/5] event/opdl: " Gavin Hu
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 0/5] use WFE for aarch64 David Marchand
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 1/5] bus/fslmc: fix the conflicting dmb function David Marchand
2019-12-10 6:13 ` Honnappa Nagarahalli
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 2/5] eal: add the APIs to wait until equal David Marchand
2019-11-08 16:38 ` Ananyev, Konstantin
2019-11-08 17:00 ` Thomas Monjalon
2019-11-08 18:36 ` Ananyev, Konstantin
2019-11-11 5:11 ` Jerin Jacob
2019-11-11 5:51 ` Gavin Hu (Arm Technology China)
2019-12-10 7:51 ` Honnappa Nagarahalli
2020-01-16 21:38 ` David Marchand
2020-01-17 2:46 ` Gavin Hu
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 3/5] ticketlock: use new API to reduce contention on aarch64 David Marchand
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 4/5] net/thunderx: use new API to save cycles " David Marchand
2019-11-07 21:35 ` [dpdk-dev] [PATCH v13 5/5] event/opdl: " David Marchand
2020-01-17 11:15 ` [dpdk-dev] [PATCH v13 0/5] use WFE for aarch64 David Marchand
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