Em Mon, Jan 11, 2016 at 01:48:05PM +0000, Wang Nan escreveu:
Copying perf to old kernel system results:This is really strange, this other test is failing if the above patch is
# perf test bpf
37: Test BPF filter :
37.1: Test basic BPF filtering : FAILED!
37.2: Test BPF prologue generation : Skip
However, in case when kernel doesn't support a test case it should
return 'Skip', 'FAILED!' should be reserved for kernel tests for when
the kernel supports a feature that then fails to work as advertised.
This patch checks environment before real testcase.
present, found by bisecting:
[acme@felicio linux]$ perf test decoder
47: Test x86 instruction decoder - new instructions : FAILED!
[acme@felicio linux]$ git log --oneline -1
91fedd318e3d perf test: Check environment before start real BPF test
[acme@felicio linux]$ git reset --hard HEAD^
HEAD is now at f1f23526d3b6 perf test: Reset err after using it hold
errcode in hist testcases
[acme@felicio linux]$ m
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j4' parallel build
CC /tmp/build/perf/arch/common.o
CC /tmp/build/perf/util/abspath.o
CC /tmp/build/perf/builtin-bench.o
CC /tmp/build/perf/util/alias.o
<SNIP>
[acme@felicio linux]$ git log --oneline -1
f1f23526d3b6 perf test: Reset err after using it hold errcode in hist
testcases
[acme@felicio linux]$ perf test decoder
47: Test x86 instruction decoder - new instructions : Ok
[acme@felicio linux]$