Messages in this thread | | | Date | Wed, 3 Apr 2024 11:21:17 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf beauty: Fix AT_EACCESS undeclared build error for system with kernel versions lower than v5.8 |
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On Wed, Apr 03, 2024 at 08:25:58PM +0800, Yang Jihong wrote: > In the environment of ubuntu20.04 (the version of kernel headers is 5.4), > there is an error in building perf: > > CC trace/beauty/fs_at_flags.o > trace/beauty/fs_at_flags.c: In function ‘faccessat2__scnprintf_flags’: > trace/beauty/fs_at_flags.c:35:14: error: ‘AT_EACCESS’ undeclared (first use in this function); did you mean ‘DN_ACCESS’? > 35 | if (flags & AT_EACCESS) { > | ^~~~~~~~~~ > | DN_ACCESS > trace/beauty/fs_at_flags.c:35:14: note: each undeclared identifier is reported only once for each function it appears in > > commit 8a1ad4413519 ("tools headers: Remove now unused copies of > uapi/{fcntl,openat2}.h and asm/fcntl.h") removes fcntl.h from tools > headers directory, and fs_at_flags.c uses the 'AT_EACCESS' macro. > This macro was introduced in the kernel version v5.8. > For system with a kernel version older than this version, > it will cause compilation to fail.
Thanks, I test on it, but since I didn't found libtraceevent-devel available there, then I have to build with NO_LIBTRACEEVENT=1 and thus this doesn't get built :-\
Thanks, applying.
- Arnaldo
> Fixes: 8a1ad4413519 ("tools headers: Remove now unused copies of uapi/{fcntl,openat2}.h and asm/fcntl.h") > Signed-off-by: Yang Jihong <yangjihong@bytedance.com> > --- > tools/perf/trace/beauty/fs_at_flags.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/tools/perf/trace/beauty/fs_at_flags.c b/tools/perf/trace/beauty/fs_at_flags.c > index c1365e8f0b96..c200669cb944 100644 > --- a/tools/perf/trace/beauty/fs_at_flags.c > +++ b/tools/perf/trace/beauty/fs_at_flags.c > @@ -10,6 +10,14 @@ > #include <linux/fcntl.h> > #include <linux/log2.h> > > +/* > + * uapi/linux/fcntl.h does not keep a copy in tools headers directory, > + * for system with kernel versions before v5.8, need to sync AT_EACCESS macro. > + */ > +#ifndef AT_EACCESS > +#define AT_EACCESS 0x200 > +#endif > + > #include "trace/beauty/generated/fs_at_flags_array.c" > static DEFINE_STRARRAY(fs_at_flags, "AT_"); > > -- > 2.25.1 >
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