On 1/24/2017 4:19 PM, Ferruh Yigit wrote:

On 1/24/2017 9:12 AM, Shreyansh Jain wrote:

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On Monday 23 January 2017 11:04 PM, Ferruh Yigit wrote:

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On 1/23/2017 11:59 AM, Hemant Agrawal wrote:

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Adding NXP DPAA2 architecture specific mempool support
Each mempool instance is represented by a DPBP object
from the FSL-MC bus.

This patch also registers a dpaa2 type MEMPOOL OPS

Signed-off-by: Hemant Agrawal <redacted>
---

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diff --git a/drivers/common/Makefile b/drivers/common/Makefile
index b52931c..0bb75b5 100644
--- a/drivers/common/Makefile
+++ b/drivers/common/Makefile

@@ -35,7 +35,11 @@ ifeq ($(CONFIG_RTE_LIBRTE_DPAA2_PMD),y)
 CONFIG_RTE_LIBRTE_DPAA2_COMMON = $(CONFIG_RTE_LIBRTE_DPAA2_PMD)
 endif

-ifeq ($(CONFIG_RTE_LIBRTE_FSLMC_BUS),y)
+ifeq ($(CONFIG_RTE_LIBRTE_DPAA2_POOL),y)
+CONFIG_RTE_LIBRTE_DPAA2_COMMON = $(CONFIG_RTE_LIBRTE_DPAA2_POOL)
+endif
+
+ifneq ($(CONFIG_RTE_LIBRTE_FSLMC_BUS),y)

I guess this is a typo, but this prevents DPAA2_COMMON to be compiled !!

It should be 'ifeq' rather than 'ifneq'.

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And it will prevent COMMON
compilation only if CONFIG_RTE_LIBRTE_FSLMC_BUS=n which is not the case
right now.

It was the case for me for x86 config, but you are right it is not the
default case for arm.

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We will fix it.

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 CONFIG_RTE_LIBRTE_DPAA2_COMMON = $(CONFIG_RTE_LIBRTE_FSLMC_BUS)
 endif

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+# library dependencies
+DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_POOL) += lib/librte_eal
+DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_POOL) += lib/librte_mempool
+DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_POOL) += lib/librte_common_dpaa2_qbman

This dependeny doesn not looks correct, there is no folder like that.

This is something even I need to understand. From the DEPDIRS what I
understood was that though it refers to a directory, it essentially
links libraries in build/lib/*.

Further, somehow the development is deploying drivers/bus,
drivers/common and drivers/pool in lib/* under the name specified as
LIB in Makefile. My understanding was that it is expected behavior and
not special because of drivers folder.

Thus, above line only links lib/librte_common_dpaa2_qbman generated by
drivers/common/dpaa2/qbman code.

In fact, I think, this might also one of the issues why a parallel
shared build fails for DPAA2 PMD (added in Cover letter).
The dependency graph cannot create a graph for drivers/common
as dependency for drivers/net or drivers/bus and hence parallel build
fails because of missing libraries which are being parallely compiled.

DEPDIRS-y is mainly to resolve dependencies for compilation order, and
should point to the folder,

Following line will cause "librte_eal" to be compiled before driver:
DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_POOL) += lib/librte_eal

So "lib/librte_common_dpaa2_qbman" does not makes more sense, since
there is no folder like that.


Somewhere in the history, with following commit, DEPDIRS-y gained a side
effect, it has been used to set dynamic linking dependencies, to fix
underlinking issue:
 bf5a46fa5972 ("mk: generate internal library dependencies")

I guess you are having that line to benefit from this side effect, but
this can be done with following more properly:
LDLIBS += lib/librte_common_dpaa2_qbman


To resolve the drivers/net to drivers/common dependency, following line
in this Makefile should work:
DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_PMD) += drivers/common/dpaa2

This adds following, which will cause "drivers/common" compiled before
any "drivers/net":
LOCAL_DEPDIRS-drivers/net += drivers/common

Thanks for your suggestion. This is one thing, I am not yet able to fix.

Based on your suggestions:
e.g.
LDLIBS += -lrte_common_dpaa2_qbman
DEPDIRS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += drivers/common/dpaa2

It does add entry in the ".depdirs"
./arm64-dpaa2-linuxapp-gcc/.depdirs:168:LOCAL_DEPDIRS-drivers/bus += 
drivers/common
./arm64-dpaa2-linuxapp-gcc/.depdirs:170:LOCAL_DEPDIRS-drivers += lib
./arm64-dpaa2-linuxapp-gcc/.depdirs:172:LOCAL_DEPDIRS-drivers += lib
./arm64-dpaa2-linuxapp-gcc/.depdirs:174:LOCAL_DEPDIRS-drivers/pool += 
drivers/common

However,  we keep on getting:
LD librte_bus_fslmc.so.1.1
aarch64-linux-gnu-gcc: error: drivers/common/dpaa2: No such file or 
directory
make[6]: *** [librte_bus_fslmc.so.1.1] Error 1

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+DEPDIRS-$(CONFIG_RTE_LIBRTE_DPAA2_POOL) += lib/librte_bus_fslmc
+
+include $(RTE_SDK)/mk/rte.lib.mk

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