[lttng-dev] is ltt patch required to build lttng module?
kumar s
skumar.m226 at gmail.com
Mon Dec 23 00:03:12 EST 2013
Hi
I tried setting CONFIG_TRACEPOINT=y , still not able to build modules.
I will share the sdk access.
Username - skumarm226
password - OCT123SDK
www.cnusers.org. Once logged in , you can download sdk, toolchain from
Downloads/Downloads for registered users/OCTEON cnusers Software
Development kit/ Octeon cnusers sdk 2.3
Thank you
Skumar
On Tue, Dec 10, 2013 at 8:50 PM, Jérémie Galarneau <
jeremie.galarneau at efficios.com> wrote:
> On Tue, Dec 10, 2013 at 6:40 AM, kumar s <skumar.m226 at gmail.com> wrote:
> > Hi,
> >
> > I replaced the makefile with the original makefile. I did not make any
> > changes in Makefile now.
> >
> >
> > KERNELDIR=/opt/MIPS/OCTEON-SDK/linux/kernel_2.6/linux make ARCH=mips
> > CROSS_COMPILE=mips64-octeon-linux-gnu-
> > make -C /opt/MIPS/OCTEON-SDK/linux/kernel_2.6/linux
> > M=/home/shkumar/lttng-tools/lttngnew/lttng-modules-f49eb38 modules
> > make[1]: Entering directory `/opt/MIPS/OCTEON-SDK/linux/kernel_2.6/linux'
> >
> > Building modules, stage 2.
> > MODPOST 0 modules
> > make[1]: Leaving directory `/opt/MIPS/OCTEON-SDK/linux/kernel_2.6/linux'
> >
> >
> > From the Readme File ,
> >
> > I find only CONFIG_MODULES=y, CONFIG_KALLSYMS=y,CONFIG_HIGH_RES_TIMERS=y
> in
> > arch/mips/cavium-octeon_defconfig
> >
> > I dont find CONFIG_TRACEPOINT in cavium-octeon_defconfig.
> >
> > Also optional config mentioned in README is not there in
> >
> arch/mips/cavium-octeon_defconfig.(CONFIG_PERF_EVENTS,CONFIG_HAVE_SYSCALL_TRACEPOINTS,CONFIG_EVENT_TRACING,CONFIG_KPROBES).
> >
> > Is this a reason the lttng modules not getting built?. If so how should i
> > set it or enable.?
>
> Probably. It's hard for me to verify since the SDK is behind a
> registration/pay wall. CONFIG_TRACEPOINT is a boolean config option so
> I guess adding CONFIG_TRACEPOINT=y would do the trick.
>
> Keep in mind that you will have to rebuild your platform's kernel.
>
> Perhaps someone can spot something more obvious?
>
> Jérémie
>
> >
> > Thank you
> > Skumar
> >
> >
> >
> > On Tue, Dec 10, 2013 at 1:01 AM, Jérémie Galarneau
> > <jeremie.galarneau at efficios.com> wrote:
> >>
> >> On Mon, Dec 9, 2013 at 3:13 AM, kumar s <skumar.m226 at gmail.com> wrote:
> >> > 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 ?
> >>
> >> Using the -C option should not be necessary.
> >>
> >> The README in lttng-modules' tree explains how to set a custom kernel
> >> directory. The README also details the required kernel configuration
> >> options. Make sure that your platform's kernel configuration follows
> >> these requirements.
> >>
> >> % KERNELDIR=path_to_kernel_dir make
> >> # KERNELDIR=path_to_kernel_dir make modules_install
> >> # depmod -a kernel_version
> >>
> >> Regards,
> >> Jérémie
> >>
> >> >
> >> > 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
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Jérémie Galarneau
> >> EfficiOS Inc.
> >> http://www.efficios.com
> >
> >
>
>
>
> --
> Jérémie Galarneau
> EfficiOS Inc.
> http://www.efficios.com
>
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