[v2,1/2] eal: introduce rte-init queue for libraries initialization
diff mbox series

Message ID 1586444567-9311-1-git-send-email-xiangxia.m.yue@gmail.com
State Superseded, archived
Delegated to: David Marchand
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Series
  • [v2,1/2] eal: introduce rte-init queue for libraries initialization
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Context Check Description
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ci/iol-testing fail Testing issues
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/checkpatch warning coding style issues

Commit Message

Tonghao Zhang April 9, 2020, 3:02 p.m. UTC
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>

This patch introduces last-init queue, user can register a
callback for theirs initialization. Running rte_last_init_run(),
the almost resource of DPDK are available, such as memzone, ring.
With this way, user don't introduce additional codes in eal layer.

[This patch will be used for next patch.]

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
v2:
* rename rte_last_init_register ->rte_init_register
* rename rte_last_init struct ->rte_init
* rename rte_init_cb ->rte_init_cb_t 
* free the rte_init node when not used.
* remove rte_init and others to eal_private.h
* add comments
* fix checkpatch warning
---
 lib/librte_eal/common/eal_common_init.c | 74 +++++++++++++++++++++++++++++++++
 lib/librte_eal/common/eal_private.h     | 23 ++++++++++
 lib/librte_eal/common/meson.build       |  1 +
 lib/librte_eal/freebsd/Makefile         |  1 +
 lib/librte_eal/freebsd/eal.c            |  6 +++
 lib/librte_eal/include/rte_init.h       | 59 ++++++++++++++++++++++++++
 lib/librte_eal/linux/Makefile           |  1 +
 lib/librte_eal/linux/eal.c              |  6 +++
 8 files changed, 171 insertions(+)
 create mode 100644 lib/librte_eal/common/eal_common_init.c
 create mode 100644 lib/librte_eal/include/rte_init.h

Comments

Jerin Jacob April 10, 2020, 6:18 a.m. UTC | #1
On Thu, Apr 9, 2020 at 8:33 PM <xiangxia.m.yue@gmail.com> wrote:
>
> From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
>
> This patch introduces last-init queue, user can register a
> callback for theirs initialization. Running rte_last_init_run(),

The above section needs to be rewritten wrt v2 changes.

> the almost resource of DPDK are available, such as memzone, ring.
> With this way, user don't introduce additional codes in eal layer.
>
> [This patch will be used for next patch.]

See below


>
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> ---
See above

Move [This patch will be used for next patch.] here to avoid
unnecessary information in the git commit.

> v2:
> * rename rte_last_init_register ->rte_init_register
> * rename rte_last_init struct ->rte_init
> * rename rte_init_cb ->rte_init_cb_t
> * free the rte_init node when not used.
> * remove rte_init and others to eal_private.h
> * add comments
> * fix checkpatch warning
> ---
> diff --git a/lib/librte_eal/include/rte_init.h b/lib/librte_eal/include/rte_init.h
> new file mode 100644
> index 0000000..636efff
> --- /dev/null
> +++ b/lib/librte_eal/include/rte_init.h
> @@ -0,0 +1,59 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright 2020 DPDK Community
> + */
> +
> +#ifndef _RTE_INIT_H_
> +#define _RTE_INIT_H_

@file section is missing. See
lib/librte_eal/common/include/rte_errno.h as example.


> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +#include <stdio.h>
> +#include <sys/queue.h>

<sys/queue.h> is not required in public API header file.

> +
> +/**
> + * Implementation specific callback function which is
> + * responsible for specificed initialization.
> + *
> + * This is called when almost resources are available.
> + *
> + * @return
> + *     0 for successful callback
> + *     Negative for unsuccessful callback with error value
> + */
> +typedef int (*rte_init_cb_t)(const void *arg);
> +
> +/**
> + * rte_init type.
> + *
> + * The rte_init of RTE_INIT_PRE are called firstly,
> + * and then RTE_INIT_POST.
> + */
> +enum rte_init_type {
> +       RTE_INIT_PRE,

Type specific comment is missing.

Example as reference for formatting.

/**
 * Enumerate trace mode operation.
 */
enum rte_trace_mode_e {
        /**
         * In this mode, When no space left in trace buffer, the subsequent
         * events overwrite the old events in the trace buffer.
         */
        RTE_TRACE_MODE_OVERWRITE,
        /**
         * In this mode, When no space left on trace buffer, the subsequent
         * events shall not be recorded in the trace buffer.
         */
        RTE_TRACE_MODE_DISCARD,
};

> +       RTE_INIT_POST
> +};


> +
> +/**
> + * Register a rte_init callback.
> + *
> + * @param cb
> + *   A pointer to a rte_init_cb structure, which will be used

s/used/invoked?

> + *   in rte_eal_init().
> + *
> + * @param arg
> + *   The cb will use that as param.
> + *
> + * @param type
> + *   The type of rte_init registered.
> + */
> +
> +void rte_init_register(rte_init_cb_t cb, const void *arg,
> +                      enum rte_init_type type);
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* _RTE_INIT_H_ */
Jerin Jacob April 10, 2020, 1:11 p.m. UTC | #2
On Fri, Apr 10, 2020 at 11:48 AM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>

Three more items are missing in this patch

1) Unit test case for new API
2) Make the new API __rte_experimal
3) Update the .map file


> On Thu, Apr 9, 2020 at 8:33 PM <xiangxia.m.yue@gmail.com> wrote:
> >
> > From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> >
> > This patch introduces last-init queue, user can register a
> > callback for theirs initialization. Running rte_last_init_run(),
>
> The above section needs to be rewritten wrt v2 changes.
>
> > the almost resource of DPDK are available, such as memzone, ring.
> > With this way, user don't introduce additional codes in eal layer.
> >
> > [This patch will be used for next patch.]
>
> See below
>
>
> >
> > Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > ---
> See above
>
> Move [This patch will be used for next patch.] here to avoid
> unnecessary information in the git commit.
>
> > v2:
> > * rename rte_last_init_register ->rte_init_register
> > * rename rte_last_init struct ->rte_init
> > * rename rte_init_cb ->rte_init_cb_t
> > * free the rte_init node when not used.
> > * remove rte_init and others to eal_private.h
> > * add comments
> > * fix checkpatch warning
> > ---
> > diff --git a/lib/librte_eal/include/rte_init.h b/lib/librte_eal/include/rte_init.h
> > new file mode 100644
> > index 0000000..636efff
> > --- /dev/null
> > +++ b/lib/librte_eal/include/rte_init.h
> > @@ -0,0 +1,59 @@
> > +/* SPDX-License-Identifier: BSD-3-Clause
> > + * Copyright 2020 DPDK Community
> > + */
> > +
> > +#ifndef _RTE_INIT_H_
> > +#define _RTE_INIT_H_
>
> @file section is missing. See
> lib/librte_eal/common/include/rte_errno.h as example.
>
>
> > +#ifdef __cplusplus
> > +extern "C" {
> > +#endif
> > +
> > +#include <stdio.h>
> > +#include <sys/queue.h>
>
> <sys/queue.h> is not required in public API header file.
>
> > +
> > +/**
> > + * Implementation specific callback function which is
> > + * responsible for specificed initialization.
> > + *
> > + * This is called when almost resources are available.
> > + *
> > + * @return
> > + *     0 for successful callback
> > + *     Negative for unsuccessful callback with error value
> > + */
> > +typedef int (*rte_init_cb_t)(const void *arg);
> > +
> > +/**
> > + * rte_init type.
> > + *
> > + * The rte_init of RTE_INIT_PRE are called firstly,
> > + * and then RTE_INIT_POST.
> > + */
> > +enum rte_init_type {
> > +       RTE_INIT_PRE,
>
> Type specific comment is missing.
>
> Example as reference for formatting.
>
> /**
>  * Enumerate trace mode operation.
>  */
> enum rte_trace_mode_e {
>         /**
>          * In this mode, When no space left in trace buffer, the subsequent
>          * events overwrite the old events in the trace buffer.
>          */
>         RTE_TRACE_MODE_OVERWRITE,
>         /**
>          * In this mode, When no space left on trace buffer, the subsequent
>          * events shall not be recorded in the trace buffer.
>          */
>         RTE_TRACE_MODE_DISCARD,
> };
>
> > +       RTE_INIT_POST
> > +};
>
>
> > +
> > +/**
> > + * Register a rte_init callback.
> > + *
> > + * @param cb
> > + *   A pointer to a rte_init_cb structure, which will be used
>
> s/used/invoked?
>
> > + *   in rte_eal_init().
> > + *
> > + * @param arg
> > + *   The cb will use that as param.
> > + *
> > + * @param type
> > + *   The type of rte_init registered.
> > + */
> > +
> > +void rte_init_register(rte_init_cb_t cb, const void *arg,
> > +                      enum rte_init_type type);
> > +
> > +#ifdef __cplusplus
> > +}
> > +#endif
> > +
> > +#endif /* _RTE_INIT_H_ */
Tonghao Zhang April 12, 2020, 3:20 a.m. UTC | #3
On Fri, Apr 10, 2020 at 9:11 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>
> On Fri, Apr 10, 2020 at 11:48 AM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> >
>
> Three more items are missing in this patch
>
> 1) Unit test case for new API
> 2) Make the new API __rte_experimal
Hi Jerin
This API will be invoked in mempool, if use that prefix, there is a
compile warning:
include/rte_mempool.h:933:2: error: ‘rte_init_register’ is deprecated
(declared at x86_64-native-linuxapp-gcc/include/rte_init.h:61): Symbol
is not yet part of stable ABI [-Werror=deprecated-declarations]

remove the __rte_experimal in the patch 2?

> 3) Update the .map file
>
>
> > On Thu, Apr 9, 2020 at 8:33 PM <xiangxia.m.yue@gmail.com> wrote:
> > >
> > > From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > >
> > > This patch introduces last-init queue, user can register a
> > > callback for theirs initialization. Running rte_last_init_run(),
> >
> > The above section needs to be rewritten wrt v2 changes.
> >
> > > the almost resource of DPDK are available, such as memzone, ring.
> > > With this way, user don't introduce additional codes in eal layer.
> > >
> > > [This patch will be used for next patch.]
> >
> > See below
> >
> >
> > >
> > > Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > > ---
> > See above
> >
> > Move [This patch will be used for next patch.] here to avoid
> > unnecessary information in the git commit.
> >
> > > v2:
> > > * rename rte_last_init_register ->rte_init_register
> > > * rename rte_last_init struct ->rte_init
> > > * rename rte_init_cb ->rte_init_cb_t
> > > * free the rte_init node when not used.
> > > * remove rte_init and others to eal_private.h
> > > * add comments
> > > * fix checkpatch warning
> > > ---
> > > diff --git a/lib/librte_eal/include/rte_init.h b/lib/librte_eal/include/rte_init.h
> > > new file mode 100644
> > > index 0000000..636efff
> > > --- /dev/null
> > > +++ b/lib/librte_eal/include/rte_init.h
> > > @@ -0,0 +1,59 @@
> > > +/* SPDX-License-Identifier: BSD-3-Clause
> > > + * Copyright 2020 DPDK Community
> > > + */
> > > +
> > > +#ifndef _RTE_INIT_H_
> > > +#define _RTE_INIT_H_
> >
> > @file section is missing. See
> > lib/librte_eal/common/include/rte_errno.h as example.
> >
> >
> > > +#ifdef __cplusplus
> > > +extern "C" {
> > > +#endif
> > > +
> > > +#include <stdio.h>
> > > +#include <sys/queue.h>
> >
> > <sys/queue.h> is not required in public API header file.
> >
> > > +
> > > +/**
> > > + * Implementation specific callback function which is
> > > + * responsible for specificed initialization.
> > > + *
> > > + * This is called when almost resources are available.
> > > + *
> > > + * @return
> > > + *     0 for successful callback
> > > + *     Negative for unsuccessful callback with error value
> > > + */
> > > +typedef int (*rte_init_cb_t)(const void *arg);
> > > +
> > > +/**
> > > + * rte_init type.
> > > + *
> > > + * The rte_init of RTE_INIT_PRE are called firstly,
> > > + * and then RTE_INIT_POST.
> > > + */
> > > +enum rte_init_type {
> > > +       RTE_INIT_PRE,
> >
> > Type specific comment is missing.
> >
> > Example as reference for formatting.
> >
> > /**
> >  * Enumerate trace mode operation.
> >  */
> > enum rte_trace_mode_e {
> >         /**
> >          * In this mode, When no space left in trace buffer, the subsequent
> >          * events overwrite the old events in the trace buffer.
> >          */
> >         RTE_TRACE_MODE_OVERWRITE,
> >         /**
> >          * In this mode, When no space left on trace buffer, the subsequent
> >          * events shall not be recorded in the trace buffer.
> >          */
> >         RTE_TRACE_MODE_DISCARD,
> > };
> >
> > > +       RTE_INIT_POST
> > > +};
> >
> >
> > > +
> > > +/**
> > > + * Register a rte_init callback.
> > > + *
> > > + * @param cb
> > > + *   A pointer to a rte_init_cb structure, which will be used
> >
> > s/used/invoked?
> >
> > > + *   in rte_eal_init().
> > > + *
> > > + * @param arg
> > > + *   The cb will use that as param.
> > > + *
> > > + * @param type
> > > + *   The type of rte_init registered.
> > > + */
> > > +
> > > +void rte_init_register(rte_init_cb_t cb, const void *arg,
> > > +                      enum rte_init_type type);
> > > +
> > > +#ifdef __cplusplus
> > > +}
> > > +#endif
> > > +
> > > +#endif /* _RTE_INIT_H_ */
Tonghao Zhang April 12, 2020, 3:32 a.m. UTC | #4
On Sun, Apr 12, 2020 at 11:20 AM Tonghao Zhang <xiangxia.m.yue@gmail.com> wrote:
>
> On Fri, Apr 10, 2020 at 9:11 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> >
> > On Fri, Apr 10, 2020 at 11:48 AM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> > >
> >
> > Three more items are missing in this patch
Can I add "Co-authored-by" for you ?

> > 1) Unit test case for new API
> > 2) Make the new API __rte_experimal
> Hi Jerin
> This API will be invoked in mempool, if use that prefix, there is a
> compile warning:
> include/rte_mempool.h:933:2: error: ‘rte_init_register’ is deprecated
> (declared at x86_64-native-linuxapp-gcc/include/rte_init.h:61): Symbol
> is not yet part of stable ABI [-Werror=deprecated-declarations]
>
> remove the __rte_experimal in the patch 2?
>
> > 3) Update the .map file
> >
> >
> > > On Thu, Apr 9, 2020 at 8:33 PM <xiangxia.m.yue@gmail.com> wrote:
> > > >
> > > > From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > > >
> > > > This patch introduces last-init queue, user can register a
> > > > callback for theirs initialization. Running rte_last_init_run(),
> > >
> > > The above section needs to be rewritten wrt v2 changes.
> > >
> > > > the almost resource of DPDK are available, such as memzone, ring.
> > > > With this way, user don't introduce additional codes in eal layer.
> > > >
> > > > [This patch will be used for next patch.]
> > >
> > > See below
> > >
> > >
> > > >
> > > > Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > > > ---
> > > See above
> > >
> > > Move [This patch will be used for next patch.] here to avoid
> > > unnecessary information in the git commit.
> > >
> > > > v2:
> > > > * rename rte_last_init_register ->rte_init_register
> > > > * rename rte_last_init struct ->rte_init
> > > > * rename rte_init_cb ->rte_init_cb_t
> > > > * free the rte_init node when not used.
> > > > * remove rte_init and others to eal_private.h
> > > > * add comments
> > > > * fix checkpatch warning
> > > > ---
> > > > diff --git a/lib/librte_eal/include/rte_init.h b/lib/librte_eal/include/rte_init.h
> > > > new file mode 100644
> > > > index 0000000..636efff
> > > > --- /dev/null
> > > > +++ b/lib/librte_eal/include/rte_init.h
> > > > @@ -0,0 +1,59 @@
> > > > +/* SPDX-License-Identifier: BSD-3-Clause
> > > > + * Copyright 2020 DPDK Community
> > > > + */
> > > > +
> > > > +#ifndef _RTE_INIT_H_
> > > > +#define _RTE_INIT_H_
> > >
> > > @file section is missing. See
> > > lib/librte_eal/common/include/rte_errno.h as example.
> > >
> > >
> > > > +#ifdef __cplusplus
> > > > +extern "C" {
> > > > +#endif
> > > > +
> > > > +#include <stdio.h>
> > > > +#include <sys/queue.h>
> > >
> > > <sys/queue.h> is not required in public API header file.
> > >
> > > > +
> > > > +/**
> > > > + * Implementation specific callback function which is
> > > > + * responsible for specificed initialization.
> > > > + *
> > > > + * This is called when almost resources are available.
> > > > + *
> > > > + * @return
> > > > + *     0 for successful callback
> > > > + *     Negative for unsuccessful callback with error value
> > > > + */
> > > > +typedef int (*rte_init_cb_t)(const void *arg);
> > > > +
> > > > +/**
> > > > + * rte_init type.
> > > > + *
> > > > + * The rte_init of RTE_INIT_PRE are called firstly,
> > > > + * and then RTE_INIT_POST.
> > > > + */
> > > > +enum rte_init_type {
> > > > +       RTE_INIT_PRE,
> > >
> > > Type specific comment is missing.
> > >
> > > Example as reference for formatting.
> > >
> > > /**
> > >  * Enumerate trace mode operation.
> > >  */
> > > enum rte_trace_mode_e {
> > >         /**
> > >          * In this mode, When no space left in trace buffer, the subsequent
> > >          * events overwrite the old events in the trace buffer.
> > >          */
> > >         RTE_TRACE_MODE_OVERWRITE,
> > >         /**
> > >          * In this mode, When no space left on trace buffer, the subsequent
> > >          * events shall not be recorded in the trace buffer.
> > >          */
> > >         RTE_TRACE_MODE_DISCARD,
> > > };
> > >
> > > > +       RTE_INIT_POST
> > > > +};
> > >
> > >
> > > > +
> > > > +/**
> > > > + * Register a rte_init callback.
> > > > + *
> > > > + * @param cb
> > > > + *   A pointer to a rte_init_cb structure, which will be used
> > >
> > > s/used/invoked?
> > >
> > > > + *   in rte_eal_init().
> > > > + *
> > > > + * @param arg
> > > > + *   The cb will use that as param.
> > > > + *
> > > > + * @param type
> > > > + *   The type of rte_init registered.
> > > > + */
> > > > +
> > > > +void rte_init_register(rte_init_cb_t cb, const void *arg,
> > > > +                      enum rte_init_type type);
> > > > +
> > > > +#ifdef __cplusplus
> > > > +}
> > > > +#endif
> > > > +
> > > > +#endif /* _RTE_INIT_H_ */
>
>
>
> --
> Best regards, Tonghao
Jerin Jacob April 13, 2020, 11:32 a.m. UTC | #5
On Sun, Apr 12, 2020 at 9:03 AM Tonghao Zhang <xiangxia.m.yue@gmail.com> wrote:
>
> On Sun, Apr 12, 2020 at 11:20 AM Tonghao Zhang <xiangxia.m.yue@gmail.com> wrote:
> >
> > On Fri, Apr 10, 2020 at 9:11 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> > >
> > > On Fri, Apr 10, 2020 at 11:48 AM Jerin Jacob <jerinjacobk@gmail.com> wrote:
> > > >
> > >
> > > Three more items are missing in this patch
> Can I add "Co-authored-by" for you ?

We are not using that tag in DPDK. Feel free to add, Suggested-by:
Jerin Jacob <jerinj@marvell.com>

>
> > > 1) Unit test case for new API
> > > 2) Make the new API __rte_experimal
> > Hi Jerin
> > This API will be invoked in mempool, if use that prefix, there is a
> > compile warning:
> > include/rte_mempool.h:933:2: error: ‘rte_init_register’ is deprecated
> > (declared at x86_64-native-linuxapp-gcc/include/rte_init.h:61): Symbol
> > is not yet part of stable ABI [-Werror=deprecated-declarations]

http://patches.dpdk.org/patch/68119/ will be applied soon. So it will
not a problem,

Patch
diff mbox series

diff --git a/lib/librte_eal/common/eal_common_init.c b/lib/librte_eal/common/eal_common_init.c
new file mode 100644
index 0000000..1d89db3
--- /dev/null
+++ b/lib/librte_eal/common/eal_common_init.c
@@ -0,0 +1,74 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 DPDK Community
+ */
+
+#include <sys/queue.h>
+
+#include <rte_init.h>
+#include <rte_debug.h>
+#include <rte_tailq.h>
+
+#include "eal_private.h"
+
+static struct rte_init_list rte_init_list =
+	TAILQ_HEAD_INITIALIZER(rte_init_list);
+
+void
+rte_init_register(rte_init_cb_t cb, const void *arg, enum rte_init_type type)
+{
+	struct rte_init *last;
+
+	RTE_VERIFY(cb);
+
+	last = malloc(sizeof(*last));
+	if (last == NULL)
+		rte_panic("Alloc memory for rte_init node failed\n");
+
+	last->type = type;
+	last->arg = arg;
+	last->cb = cb;
+
+	TAILQ_INSERT_TAIL(&rte_init_list, last, next);
+}
+
+static int
+eal_rte_init_run_type(enum rte_init_type type)
+{
+	struct rte_init *last;
+	int ret;
+
+	TAILQ_FOREACH(last, &rte_init_list, next) {
+		if (last->type != type)
+			continue;
+
+		ret = last->cb(last->arg);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+int
+eal_rte_init_run(void)
+{
+	struct rte_init *last;
+	struct rte_init *tmp;
+	int ret;
+
+	ret = eal_rte_init_run_type(RTE_INIT_PRE);
+	if (ret < 0)
+		return ret;
+
+	ret = eal_rte_init_run_type(RTE_INIT_POST);
+	if (ret < 0)
+		return ret;
+
+	/* Free rte_init node, not used anymore. */
+	TAILQ_FOREACH_SAFE(last, &rte_init_list, next, tmp) {
+		TAILQ_REMOVE(&rte_init_list, last, next);
+		free(last);
+	}
+
+	return 0;
+}
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index ddcfbe2..f0bcc97 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -11,6 +11,7 @@ 
 
 #include <rte_dev.h>
 #include <rte_lcore.h>
+#include <rte_init.h>
 
 /**
  * Structure storing internal configuration (per-lcore)
@@ -60,6 +61,28 @@  struct rte_config {
 } __attribute__((__packed__));
 
 /**
+ * A structure describing a generic initialization.
+ */
+struct rte_init {
+	TAILQ_ENTRY(rte_init) next;
+	enum rte_init_type type;
+	rte_init_cb_t cb;
+	const void *arg;
+};
+
+/** Double linked list of rte_init. */
+TAILQ_HEAD(rte_init_list, rte_init);
+
+/**
+ * Run the callback registered in the global double linked list.
+ *
+ * @return
+ *   - 0 on success
+ *   - Negative on error
+ */
+int eal_rte_init_run(void);
+
+/**
  * Get the global configuration structure.
  *
  * @return
diff --git a/lib/librte_eal/common/meson.build b/lib/librte_eal/common/meson.build
index 02d9280..ad0ce6a 100644
--- a/lib/librte_eal/common/meson.build
+++ b/lib/librte_eal/common/meson.build
@@ -43,6 +43,7 @@  sources += files(
 	'eal_common_thread.c',
 	'eal_common_timer.c',
 	'eal_common_uuid.c',
+	'eal_common_init.c',
 	'hotplug_mp.c',
 	'malloc_elem.c',
 	'malloc_heap.c',
diff --git a/lib/librte_eal/freebsd/Makefile b/lib/librte_eal/freebsd/Makefile
index e5d4d8f..89c5649 100644
--- a/lib/librte_eal/freebsd/Makefile
+++ b/lib/librte_eal/freebsd/Makefile
@@ -60,6 +60,7 @@  SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += eal_common_proc.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += eal_common_fbarray.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += eal_common_uuid.c
+SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += eal_common_init.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += rte_malloc.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += hotplug_mp.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_FREEBSD) += malloc_elem.c
diff --git a/lib/librte_eal/freebsd/eal.c b/lib/librte_eal/freebsd/eal.c
index 6ae37e7..63af98c 100644
--- a/lib/librte_eal/freebsd/eal.c
+++ b/lib/librte_eal/freebsd/eal.c
@@ -874,6 +874,12 @@  static void rte_eal_init_alert(const char *msg)
 
 	eal_check_mem_on_local_socket();
 
+	if (eal_rte_init_run() < 0) {
+		rte_eal_init_alert("Cannot init objects in rte-init queue");
+		rte_errno = EFAULT;
+		return -1;
+	}
+
 	eal_thread_init_master(rte_config.master_lcore);
 
 	ret = eal_thread_dump_affinity(cpuset, sizeof(cpuset));
diff --git a/lib/librte_eal/include/rte_init.h b/lib/librte_eal/include/rte_init.h
new file mode 100644
index 0000000..636efff
--- /dev/null
+++ b/lib/librte_eal/include/rte_init.h
@@ -0,0 +1,59 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 DPDK Community
+ */
+
+#ifndef _RTE_INIT_H_
+#define _RTE_INIT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <sys/queue.h>
+
+/**
+ * Implementation specific callback function which is
+ * responsible for specificed initialization.
+ *
+ * This is called when almost resources are available.
+ *
+ * @return
+ *	0 for successful callback
+ *	Negative for unsuccessful callback with error value
+ */
+typedef int (*rte_init_cb_t)(const void *arg);
+
+/**
+ * rte_init type.
+ *
+ * The rte_init of RTE_INIT_PRE are called firstly,
+ * and then RTE_INIT_POST.
+ */
+enum rte_init_type {
+	RTE_INIT_PRE,
+	RTE_INIT_POST
+};
+
+/**
+ * Register a rte_init callback.
+ *
+ * @param cb
+ *   A pointer to a rte_init_cb structure, which will be used
+ *   in rte_eal_init().
+ *
+ * @param arg
+ *   The cb will use that as param.
+ *
+ * @param type
+ *   The type of rte_init registered.
+ */
+
+void rte_init_register(rte_init_cb_t cb, const void *arg,
+		       enum rte_init_type type);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_INIT_H_ */
diff --git a/lib/librte_eal/linux/Makefile b/lib/librte_eal/linux/Makefile
index e5f4495..918d94b 100644
--- a/lib/librte_eal/linux/Makefile
+++ b/lib/librte_eal/linux/Makefile
@@ -67,6 +67,7 @@  SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += eal_common_thread.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += eal_common_proc.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += eal_common_fbarray.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += eal_common_uuid.c
+SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += eal_common_init.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += rte_malloc.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += hotplug_mp.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUX) += malloc_elem.c
diff --git a/lib/librte_eal/linux/eal.c b/lib/librte_eal/linux/eal.c
index 9530ee5..dd0c258 100644
--- a/lib/librte_eal/linux/eal.c
+++ b/lib/librte_eal/linux/eal.c
@@ -1203,6 +1203,12 @@  static void rte_eal_init_alert(const char *msg)
 
 	eal_check_mem_on_local_socket();
 
+	if (eal_rte_init_run() < 0) {
+		rte_eal_init_alert("Cannot init objects in rte-init queue");
+		rte_errno = EFAULT;
+		return -1;
+	}
+
 	eal_thread_init_master(rte_config.master_lcore);
 
 	ret = eal_thread_dump_affinity(cpuset, sizeof(cpuset));