From mboxrd@z Thu Jan 1 00:00:00 1970 From: mathieu.desnoyers@efficios.com (Mathieu Desnoyers) Date: Mon, 3 Feb 2014 15:50:24 +0000 (UTC) Subject: [lttng-dev] lib_ring_buffer_align error bit-field '' width not an integer constant In-Reply-To: References: Message-ID: <2097060417.17951.1391442624499.JavaMail.zimbra@efficios.com> ----- Original Message ----- > From: "kumar s" > To: lttng-dev at lists.lttng.org > Sent: Tuesday, December 3, 2013 3:20:02 AM > Subject: [lttng-dev] lib_ring_buffer_align error bit-field '' > width not an integer constant > Hello, > When trying to build lttng modules i am getting this error. Cross compiler > for mips and Arch = mips is used in makefile. > Linux kernel version 2.6.32.27 > make -C > /home/shkumar/Development_Merge/NewOCT/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux > M=/home/shkumar/lttng-tools/lttngmod/lttng-modules modules ARCH=mips > CROSS_COMPILE=mips64-octeon-linux-gnu- > make[1]: Entering directory > `/home/shkumar/Development_Merge/NewOCT/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux' > CC [M] > /home/shkumar/lttng-tools/lttngmod/lttng-modules/lttng-ring-buffer-client-discard.o > In file included from > /home/shkumar/lttng-tools/lttngmod/lttng-modules/wrapper/ringbuffer/config.h:1, > from /home/shkumar/lttng-tools/lttngmod/lttng-modules/lttng-tracer-core.h:35, > from /home/shkumar/lttng-tools/lttngmod/lttng-modules/lttng-tracer.h:39, > from > /home/shkumar/lttng-tools/lttngmod/lttng-modules/lttng-ring-buffer-client-discard.c:24: > /home/shkumar/lttng-tools/lttngmod/lttng-modules/wrapper/ringbuffer/../../lib/ringbuffer/config.h: > In function 'lib_ring_buffer_align': > /home/shkumar/lttng-tools/lttngmod/lttng-modules/wrapper/ringbuffer/../../lib/ringbuffer/config.h:266: > error: bit-field '' width not an integer constant > make[2]: *** > [/home/shkumar/lttng-tools/lttngmod/lttng-modules/lttng-ring-buffer-client-discard.o] > Error 1 > make[1]: *** [_module_/home/shkumar/lttng-tools/lttngmod/lttng-modules] Error > 2 > make[1]: Leaving directory > `/home/shkumar/Development_Merge/NewOCT/OCTEON_SDK/octeon_sdk/OCTEON-SDK/linux/kernel_2.6/linux' > make: *** [default] Error 2 > How do i fix this? This is caused by the use of offset_align(), passing incorrect parameters, detected by the compiler: see lttng-modules lib/align.h: #define offset_align(align_drift, alignment) \ ({ \ BUILD_RUNTIME_BUG_ON((alignment) == 0 \ || ((alignment) & ((alignment) - 1))); \ (((alignment) - (align_drift)) & ((alignment) - 1)); \ }) See also lttng-modules lib/bug.h So there are two things that are possible: either the compiler you use does not perform the optimisations that are expected, and therefore triggers the BUILD_BUG_ON() without needing to, or there really is an incorrect value passed to offset_align(). Make sure lttng-modules, your compiler toolchain, and your kernel are up to date. Thanks, Mathieu > Skumar. > _______________________________________________ > lttng-dev mailing list > lttng-dev at lists.lttng.org > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com -------------- next part -------------- An HTML attachment was scrubbed... URL: