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authorHan Pingtian <phan@redhat.com>2011-01-20 19:47:07 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-01-21 16:44:14 -0200
commitffb5e0fb44d0829021a51f972df90166bc9b700e (patch)
treed0fc058c018522d940aceb56350e83f7a93a0be3 /tools
parentb2f8fb237e9cc407a02aca401369c15babae35dd (diff)
downloadlinux-2.6.38-lt-ux500-ffb5e0fb44d0829021a51f972df90166bc9b700e.tar.gz
perf test: Use cpu_map->[cpu] when setting affinity
When some of CPUs are offline: # cat /sys/devices/system/cpu/online 0,6-31 perf test will fail on #3 testcase: 3: detect open syscall event on all cpus: --- start --- perf_evsel__read_on_cpu: expected to intercept 111 calls on cpu 0, got 681 perf_evsel__read_on_cpu: expected to intercept 112 calls on cpu 1, got 117 perf_evsel__read_on_cpu: expected to intercept 113 calls on cpu 2, got 118 perf_evsel__read_on_cpu: expected to intercept 114 calls on cpu 3, got 119 perf_evsel__read_on_cpu: expected to intercept 115 calls on cpu 4, got 120 perf_evsel__read_on_cpu: expected to intercept 116 calls on cpu 5, got 121 perf_evsel__read_on_cpu: expected to intercept 117 calls on cpu 6, got 122 perf_evsel__read_on_cpu: expected to intercept 118 calls on cpu 7, got 123 perf_evsel__read_on_cpu: expected to intercept 119 calls on cpu 8, got 124 perf_evsel__read_on_cpu: expected to intercept 120 calls on cpu 9, got 125 perf_evsel__read_on_cpu: expected to intercept 121 calls on cpu 10, got 126 .... This patch try to use 'cpus->map[cpu]' when setting cpu affinity, and will check the return code of sched_setaffinity() LKML-Reference: <20110120114707.GA11781@hpt.nay.redhat.com> Signed-off-by: Han Pingtian <phan@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-test.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index ed5696198d3..02958d6a807 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -380,13 +380,18 @@ static int test__open_syscall_event_on_all_cpus(void)
for (cpu = 0; cpu < cpus->nr; ++cpu) {
unsigned int ncalls = nr_open_calls + cpu;
- CPU_SET(cpu, cpu_set);
- sched_setaffinity(0, cpu_set_size, cpu_set);
+ CPU_SET_S(cpus->map[cpu], cpu_set_size, cpu_set);
+ if (sched_setaffinity(0, cpu_set_size, cpu_set) < 0) {
+ pr_debug("sched_setaffinity() failed on CPU %d: %s ",
+ cpus->map[cpu],
+ strerror(errno));
+ goto out_close_fd;
+ }
for (i = 0; i < ncalls; ++i) {
fd = open("/etc/passwd", O_RDONLY);
close(fd);
}
- CPU_CLR(cpu, cpu_set);
+ CPU_CLR_S(cpus->map[cpu], cpu_set_size, cpu_set);
}
/*
@@ -410,7 +415,7 @@ static int test__open_syscall_event_on_all_cpus(void)
expected = nr_open_calls + cpu;
if (evsel->counts->cpu[cpu].val != expected) {
pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls on cpu %d, got %Ld\n",
- expected, cpu, evsel->counts->cpu[cpu].val);
+ expected, cpus->map[cpu], evsel->counts->cpu[cpu].val);
goto out_close_fd;
}
}