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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: dev@dpdk.org, tiwei.bie@intel.com, ray.kinsella@intel.com,
	zhihong.wang@intel.com, maxime.coquelin@redhat.com,
	kuralamudhan.ramakrishnan@intel.com
Subject: Re: [dpdk-dev] [PATCH 8/8] mem: support using memfd segments for in-memory mode
Date: Fri, 24 Aug 2018 10:09:01 +0530	[thread overview]
Message-ID: <20180824043900.GA9021@jerin> (raw)
In-Reply-To: <4e780007ecfc3c1c5e8a249f69236b407d2e98d0.1535041359.git.anatoly.burakov@intel.com>

-----Original Message-----
> Date: Thu, 23 Aug 2018 17:59:55 +0100
> From: Anatoly Burakov <anatoly.burakov@intel.com>
> To: dev@dpdk.org
> CC: tiwei.bie@intel.com, ray.kinsella@intel.com, zhihong.wang@intel.com,
>  maxime.coquelin@redhat.com, kuralamudhan.ramakrishnan@intel.com
> Subject: [dpdk-dev] [PATCH 8/8] mem: support using memfd segments for
>  in-memory mode
> X-Mailer: git-send-email 1.7.0.7
> 
> 
> Enable using memfd-created segments if supported by the system.
> 
> This will allow having real fd's for pages but without hugetlbfs
> mounts, which will enable in-memory mode to be used with virtio.
> 
> The implementation is mostly piggy-backing on existing real-fd
> code, except that we no longer need to unlink any files or track
> per-page locks in single-file segments mode, because in-memory
> mode does not support secondary processes anyway.
> 
> We move some checks from EAL command-line parsing code to memalloc
> because it is now possible to use single-file segments mode with
> in-memory mode, but only if memfd is supported.
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>  lib/librte_eal/common/eal_common_options.c |   6 +-
>  lib/librte_eal/linuxapp/eal/eal_memalloc.c | 265 ++++++++++++++++++---
>  2 files changed, 235 insertions(+), 36 deletions(-)
> 
> 
> +static inline uint32_t
> +bsf64(uint64_t v)
> +{
> +       return (uint32_t)__builtin_ctzll(v);
> +}
> +
> +static inline uint32_t
> +log2_u64(uint64_t v)
> +{
> +       if (v == 0)
> +               return 0;
> +       v = rte_align64pow2(v);
> +       return bsf64(v);
> +}
> +

Can we move this to lib/librte_eal/common/include/rte_common.h?
It has already rte_log2_u32()

  reply	other threads:[~2018-08-24  4:39 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-23 16:59 [dpdk-dev] [PATCH 0/8] Improve running DPDK without hugetlbfs mounpoint Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 1/8] fbarray: fix detach in noshconf mode Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 2/8] eal: don't allow legacy mode with in-memory mode Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 3/8] mem: raise maximum fd limit unconditionally Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 4/8] memalloc: rename lock list to fd list Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 5/8] memalloc: track page fd's in non-single file mode Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 6/8] memalloc: add EAL-internal API to get and set segment fd's Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 7/8] mem: add external API to retrieve page fd from EAL Anatoly Burakov
2018-08-23 16:59 ` [dpdk-dev] [PATCH 8/8] mem: support using memfd segments for in-memory mode Anatoly Burakov
2018-08-24  4:39   ` Jerin Jacob [this message]
2018-08-24  8:56     ` Burakov, Anatoly
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 0/9] Improve running DPDK without hugetlbfs mounpoint Anatoly Burakov
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 " Anatoly Burakov
2018-09-19 13:04     ` Thomas Monjalon
2018-09-19 13:55       ` Burakov, Anatoly
2018-09-19 14:15         ` Thomas Monjalon
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 1/9] fbarray: fix detach in noshconf mode Anatoly Burakov
2018-09-13 13:00     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 2/9] eal: don't allow legacy mode with in-memory mode Anatoly Burakov
2018-09-13 13:06     ` Maxime Coquelin
2018-09-17  9:49       ` Burakov, Anatoly
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 3/9] mem: raise maximum fd limit unconditionally Anatoly Burakov
2018-09-13 13:12     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 4/9] memalloc: rename lock list to fd list Anatoly Burakov
2018-09-13 15:19     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 5/9] memalloc: track page fd's in non-single file mode Anatoly Burakov
2018-09-13 15:56     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 6/9] memalloc: add EAL-internal API to get and set segment fd's Anatoly Burakov
2018-09-14  7:54     ` Maxime Coquelin
2018-09-17  9:53       ` Burakov, Anatoly
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 7/9] mem: add external API to retrieve page fd from EAL Anatoly Burakov
2018-09-14  8:00     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 8/9] mem: allow querying offset into segment fd Anatoly Burakov
2018-09-14  7:57     ` Maxime Coquelin
2018-09-04 15:15   ` [dpdk-dev] [PATCH v3 9/9] mem: support using memfd segments for in-memory mode Anatoly Burakov
2018-09-14  8:06     ` Maxime Coquelin
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 1/9] fbarray: fix detach in noshconf mode Anatoly Burakov
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 2/9] eal: don't allow legacy mode with in-memory mode Anatoly Burakov
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 3/9] mem: raise maximum fd limit unconditionally Anatoly Burakov
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 4/9] memalloc: rename lock list to fd list Anatoly Burakov
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 5/9] memalloc: track page fd's in non-single file mode Anatoly Burakov
2018-09-04 15:01 ` [dpdk-dev] [PATCH v2 6/9] memalloc: add EAL-internal API to get and set segment fd's Anatoly Burakov
2018-09-04 15:02 ` [dpdk-dev] [PATCH v2 7/9] mem: add external API to retrieve page fd from EAL Anatoly Burakov
2018-09-04 15:02 ` [dpdk-dev] [PATCH v2 8/9] mem: allow querying offset into segment fd Anatoly Burakov
2018-09-04 15:02 ` [dpdk-dev] [PATCH v2 9/9] mem: support using memfd segments for in-memory mode Anatoly Burakov

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