Vince, On Wed, Sep 1, 2010 at 9:25 PM, Vince Weaver <vweav...@eecs.utk.edu> wrote: > On Tue, 31 Aug 2010, stephane eranian wrote: > >> I have pushed the change to drop pfmlib_getcpuinfo_attr(). >> On ARM, you still have it. Check it out and let me know if >> it works. > > I get the following error, related to your adding the > __NR_perf_event_open value to perf_event.h > > This is really weird, because the same type of declaration doesn't > conflict at all on my x86_64 machine. I must be missing something... > > > cc -O2 -g -Wall -Werror -I. -I/arm/vince/libpfm4.vmw/lib/../include > -DCONFIG_PFMLIB_DEBUG -DCONFIG_PFMLIB_OS_LINUX -D_REENTRANT -I. > -DCONFIG_PFMLIB_ARCH_ARM -I. -c pfmlib_common.c > In file included from > /arm/vince/libpfm4.vmw/lib/../include/perfmon/pfmlib_perf_event.h:26, > from pfmlib_priv.h:29, > from pfmlib_common.c:41: > /arm/vince/libpfm4.vmw/lib/../include/perfmon/perf_event.h:451:1: error: > "__NR_perf_event_open" redefined > In file included from /usr/include/sys/syscall.h:25, > from > /arm/vince/libpfm4.vmw/lib/../include/perfmon/perf_event.h:433, > from > /arm/vince/libpfm4.vmw/lib/../include/perfmon/pfmlib_perf_event.h:26, > from pfmlib_priv.h:29, > from pfmlib_common.c:41: > /usr/include/asm/unistd.h:393:1: error: this is the location of the > previous definition > make[1]: *** [pfmlib_common.o] Error 1 > make[1]: Leaving directory `/arm/vince/libpfm4.vmw/lib' > make: *** [all] Error 2 > That's because on ARM, the _NR_perf_event_open syscall is already defined in some generic header file (I bet /usr/include/asm/unistd.h). That means I need to fix my perf_event.h to check for that before forcing a definition on its own.
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