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SubjectRe: [PATCH] perf tools: Fix random building error
On 01/09/15 08:56, Wang Nan wrote:
> I hit following building error randomly:

Random presumably because there is a race to use/create the directory by
different make jobs (i.e. -j option).

>
> ...
> /bin/sh: /path/to/kernel/buildperf/util/intel-pt-decoder/inat-tables.c: No such file or directory
> ...
> LINK /path/to/kernel/buildperf/plugin_mac80211.so
> LINK /path/to/kernel/buildperf/plugin_kmem.so
> LINK /path/to/kernel/buildperf/plugin_xen.so
> LINK /path/to/kernel/buildperf/plugin_hrtimer.so
> In file included from util/intel-pt-decoder/intel-pt-insn-decoder.c:25:0:
> util/intel-pt-decoder/inat.c:24:25: fatal error: inat-tables.c: No such file or directory
> #include "inat-tables.c"
> ^
> compilation terminated.
> make[4]: *** [/path/to/kernel/buildperf/util/intel-pt-decoder/intel-pt-insn-decoder.o] Error 1
> make[4]: *** Waiting for unfinished jobs....
> LINK /path/to/kernel/buildperf/plugin_function.so
>
> This is caused by tools/perf/util/intel-pt-decoder/Build that, it tries to
> generate $(OUTPUT)util/intel-pt-decoder/inat-tables.c atomatically but
> forget to ensure the existance of $(OUTPUT)util/intel-pt-decoder directory.
>
> This patch fixes it by adding $(call rule_mkdir) like other similar rules.
>
> Signed-off-by: Wang Nan <wangnan0@huawei.com>
> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Adrian Hunter <adrian.hunter@intel.com>

Looks ok to me. Jiri?

> ---
> tools/perf/util/intel-pt-decoder/Build | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/tools/perf/util/intel-pt-decoder/Build b/tools/perf/util/intel-pt-decoder/Build
> index 240730d..2386322 100644
> --- a/tools/perf/util/intel-pt-decoder/Build
> +++ b/tools/perf/util/intel-pt-decoder/Build
> @@ -4,6 +4,7 @@ inat_tables_script = util/intel-pt-decoder/gen-insn-attr-x86.awk
> inat_tables_maps = util/intel-pt-decoder/x86-opcode-map.txt
>
> $(OUTPUT)util/intel-pt-decoder/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
> + $(call rule_mkdir)
> @$(call echo-cmd,gen)$(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@ || rm -f $@
>
> $(OUTPUT)util/intel-pt-decoder/intel-pt-insn-decoder.o: util/intel-pt-decoder/inat.c $(OUTPUT)util/intel-pt-decoder/inat-tables.c
>



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