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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-17 15:39:16 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-17 15:43:38 -0300
commit1967936d688c475b85d34d84e09858cf514c893c (patch)
treee9788fe79c7d2af4ad1fab0d9cfe4b3822f468ff /tools/perf/util/include
parentc100edbee8dbf033ec4095a976a74c1c75c9fc1d (diff)
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perf options: Check v type in OPT_U?INTEGER
To avoid problems like the one fixed by Stephane Eranian in 3de29ca, now we'll got this instead: bench/sched-messaging.c:259: error: negative width in bit-field ‘<anonymous>’ bench/sched-messaging.c:261: error: negative width in bit-field ‘<anonymous>’ Which is rather cryptic, but is how BUILD_BUG_ON_ZERO works, so kernel hackers should be already used to this. With it in place found some problems, fixed by changing the affected variables to sensible types or changed some OPT_INTEGER to OPT_UINTEGER. Next csets will go thru converting each of the remaining OPT_ so that review can be made easier by grouping changes per type per patch. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/include')
-rw-r--r--tools/perf/util/include/linux/kernel.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/include/linux/kernel.h b/tools/perf/util/include/linux/kernel.h
index 388ab1bfd11..1eb804fd3fb 100644
--- a/tools/perf/util/include/linux/kernel.h
+++ b/tools/perf/util/include/linux/kernel.h
@@ -28,6 +28,8 @@
(type *)((char *)__mptr - offsetof(type, member)); })
#endif
+#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
+
#ifndef max
#define max(x, y) ({ \
typeof(x) _max1 = (x); \