diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-01-23 04:14:20 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-01-23 04:14:20 +0300 |
commit | 57b84e53171ce672683faf1cab2e660965a6bdaf (patch) | |
tree | da17c60c30b5adf374b599804d3a28aa5c5280ce /tools | |
parent | 01bb2dc4e47639c8e7eddb1718720a051bcdc955 (diff) | |
download | linux-57b84e53171ce672683faf1cab2e660965a6bdaf.tar.xz |
perf test: Fix build on older glibcs
Where we don't have CPU_ALLOC & friends. As the tools are being used in older
distros where the only allowed change are to replace the kernel, like RHEL4 and
5.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/builtin-test.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 02958d6a807f..0e01834a48d0 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -332,8 +332,7 @@ static int test__open_syscall_event_on_all_cpus(void) struct perf_evsel *evsel; struct perf_event_attr attr; unsigned int nr_open_calls = 111, i; - cpu_set_t *cpu_set; - size_t cpu_set_size; + cpu_set_t cpu_set; int id = trace_event__id("sys_enter_open"); if (id < 0) { @@ -353,13 +352,8 @@ static int test__open_syscall_event_on_all_cpus(void) return -1; } - cpu_set = CPU_ALLOC(cpus->nr); - if (cpu_set == NULL) - goto out_thread_map_delete; - - cpu_set_size = CPU_ALLOC_SIZE(cpus->nr); - CPU_ZERO_S(cpu_set_size, cpu_set); + CPU_ZERO(&cpu_set); memset(&attr, 0, sizeof(attr)); attr.type = PERF_TYPE_TRACEPOINT; @@ -367,7 +361,7 @@ static int test__open_syscall_event_on_all_cpus(void) evsel = perf_evsel__new(&attr, 0); if (evsel == NULL) { pr_debug("perf_evsel__new\n"); - goto out_cpu_free; + goto out_thread_map_delete; } if (perf_evsel__open(evsel, cpus, threads) < 0) { @@ -379,9 +373,19 @@ static int test__open_syscall_event_on_all_cpus(void) for (cpu = 0; cpu < cpus->nr; ++cpu) { unsigned int ncalls = nr_open_calls + cpu; + /* + * XXX eventually lift this restriction in a way that + * keeps perf building on older glibc installations + * without CPU_ALLOC. 1024 cpus in 2010 still seems + * a reasonable upper limit tho :-) + */ + if (cpus->map[cpu] >= CPU_SETSIZE) { + pr_debug("Ignoring CPU %d\n", cpus->map[cpu]); + continue; + } - CPU_SET_S(cpus->map[cpu], cpu_set_size, cpu_set); - if (sched_setaffinity(0, cpu_set_size, cpu_set) < 0) { + CPU_SET(cpus->map[cpu], &cpu_set); + if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { pr_debug("sched_setaffinity() failed on CPU %d: %s ", cpus->map[cpu], strerror(errno)); @@ -391,7 +395,7 @@ static int test__open_syscall_event_on_all_cpus(void) fd = open("/etc/passwd", O_RDONLY); close(fd); } - CPU_CLR_S(cpus->map[cpu], cpu_set_size, cpu_set); + CPU_CLR(cpus->map[cpu], &cpu_set); } /* @@ -407,6 +411,9 @@ static int test__open_syscall_event_on_all_cpus(void) for (cpu = 0; cpu < cpus->nr; ++cpu) { unsigned int expected; + if (cpus->map[cpu] >= CPU_SETSIZE) + continue; + if (perf_evsel__read_on_cpu(evsel, cpu, 0) < 0) { pr_debug("perf_evsel__open_read_on_cpu\n"); goto out_close_fd; @@ -425,8 +432,6 @@ out_close_fd: perf_evsel__close_fd(evsel, 1, threads->nr); out_evsel_delete: perf_evsel__delete(evsel); -out_cpu_free: - CPU_FREE(cpu_set); out_thread_map_delete: thread_map__delete(threads); return err; |