[lttng-dev] is ltt patch required to build lttng module?

[kumar s]

Hi,

I have not patched the linux kernel provided with octeon sdk (kernel
version 2.6.32.27). The Make has been modified with kernel directory path.

#
# Makefile for the LTT objects.
#

ifneq ($(KERNELRELEASE),)
ifneq ($(CONFIG_TRACEPOINTS),)

obj-m += lttng-ring-buffer-client-discard.o
obj-m += lttng-ring-buffer-client-overwrite.o
obj-m += lttng-ring-buffer-metadata-client.o
obj-m += lttng-ring-buffer-client-mmap-discard.o
obj-m += lttng-ring-buffer-client-mmap-overwrite.o
obj-m += lttng-ring-buffer-metadata-mmap-client.o

obj-m += lttng-tracer.o
lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
lttng-probes.o lttng-context.o \
lttng-context-pid.o lttng-context-procname.o \
lttng-context-prio.o lttng-context-nice.o \
lttng-context-vpid.o lttng-context-tid.o \
lttng-context-vtid.o lttng-context-ppid.o \
lttng-context-vppid.o lttng-calibrate.o \
lttng-context-hostname.o wrapper/random.o

obj-m += lttng-statedump.o
lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
wrapper/fdtable.o

ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
lttng-tracer-objs += lttng-syscalls.o probes/lttng-probe-user.o
endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS

ifneq ($(CONFIG_PERF_EVENTS),)
lttng-tracer-objs += $(shell \
if [ $(VERSION) -ge 3 \
-o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ;
then \
echo "lttng-context-perf-counters.o" ; fi;)
endif # CONFIG_PERF_EVENTS

obj-m += probes/
obj-m += lib/

endif # CONFIG_TRACEPOINTS

else # KERNELRELEASE
KERNELDIR ?=*
/home/shkumar/Development_Merge/OCT_no_patch/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux/*
PWD := $(shell pwd)
CFLAGS = $(EXTCFLAGS)

default:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules ARCH=mips
CROSS_COMPILE=mips64-octeon-linux-gnu-

modules_install:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install

clean:
$(MAKE) -C $(KERNELDIR) M=$(PWD) clean

%.i: %.c
$(MAKE) -C $(KERNELDIR) M=$(PWD) $@
endif # KERNELRELEASE



when trying to build

make -C
/home/shkumar/Development_Merge/OCT_no_patch/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux/
M=/home/shkumar/lttng-tools/lttngnew/lttng-modules-f49eb38 modules
ARCH=mips CROSS_COMPILE=mips64-octeon-linux-gnu-
make[1]: Entering directory
`/home/shkumar/Development_Merge/OCT_no_patch/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux'
  Building modules, stage 2.
  MODPOST 0 modules
make[1]: Leaving directory
`/home/shkumar/Development_Merge/OCT_no_patch/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux'

But lttng modules are not compiled. I cannot any modules(.ko or .o) being
generated in lttng directory or in kernel path.


If Octeon sdk is required , it can be obtained from cnusers.org.

Only patches in linux_patch directory has been applied to the kernel.

any suggestions to fix this ?

Thank you
Skumar


On Thu, Dec 5, 2013 at 8:55 PM, Jérémie Galarneau <
jeremie.galarneau at efficios.com> wrote:

> On Thu, Dec 5, 2013 at 2:40 AM, kumar s <skumar.m226 at gmail.com> wrote:
> > Hi,
> >
> > I am using kernel version 2.6.32.27. When building lttng module, do i
> need
> > to build against kernel which is patched using lttng (v0.190) or should i
> > build lttng modules for kernel that is not patched.
> >
>
> You do not need to patch your kernel using the 0.x kernel patch set to
> use the 2.x tracer.
>
> To build lttng-modules on this kernel, you will need to apply the
> patches found under linux-patches in the lttng-modules tree.
>
> Regards,
> Jérémie
>
> > I am trying to build lttng module latest version taken from
> lttng-module.git
> >
> > Thank you
> > Skumar
> >
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> >
>
>
>
> --
> Jérémie Galarneau
> EfficiOS Inc.
> http://www.efficios.com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lttng.org/pipermail/lttng-dev/attachments/20131209/7a7514c2/attachment.html>