Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [RFC PATCH 08/11] perf: Support for error passed over pointers | Date | Fri, 22 Oct 2010 21:13:09 +0200 |
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Export the linux/err.h that carries the ERR_PTR/PTR_ERR/IS_ERR macros so that they also become usable by perf.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Frank Ch. Eigler <fche@redhat.com> --- tools/perf/Makefile | 1 + tools/perf/util/include/linux/err.h | 24 ++++++++++++++++++++++++ 2 files changed, 25 insertions(+), 0 deletions(-) create mode 100644 tools/perf/util/include/linux/err.h
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 49432e0..addef2f 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -377,6 +377,7 @@ LIB_H += util/include/linux/prefetch.h LIB_H += util/include/linux/rbtree.h LIB_H += util/include/linux/string.h LIB_H += util/include/linux/types.h +LIB_H += util/include/linux/err.h LIB_H += util/include/asm/asm-offsets.h LIB_H += util/include/asm/bug.h LIB_H += util/include/asm/byteorder.h diff --git a/tools/perf/util/include/linux/err.h b/tools/perf/util/include/linux/err.h new file mode 100644 index 0000000..4e6dc36 --- /dev/null +++ b/tools/perf/util/include/linux/err.h @@ -0,0 +1,24 @@ +#ifndef PERF_ERR_H +#define PERF_ERR_H + + +#define MAX_ERRNO 4095 + +#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO) + +static inline void *ERR_PTR(long err) +{ + return (void *) err; +} + +static inline long PTR_ERR(const void *ptr) +{ + return (long) ptr; +} + +static inline long IS_ERR(const void *ptr) +{ + return IS_ERR_VALUE((unsigned long)ptr); +} + +#endif /* PERF_ERR_H */ -- 1.6.2.3
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