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Date: Fri, 14 Dec 2012 14:26:44 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alan@...rguk.ukuu.org.uk, Vinson Lee <vlee@...tter.com>,
Zheng Liu <wenqing.lz@...bao.com>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Mike Galbraith <efault@....de>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <peterz@...radead.org>,
Stephane Eranian <eranian@...gle.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [ 27/28] perf test: fix a build error on builtin-test
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zheng Liu <gnehzuil.liu@...il.com>
commit 12f8f74b2a4d26c4facfa7ef99487cf0930f6ef7 upstream.
Recently I build perf and get a build error on builtin-test.c. The error is as
following:
$ make
CC perf.o
CC builtin-test.o
cc1: warnings being treated as errors
builtin-test.c: In function ‘sched__get_first_possible_cpu’:
builtin-test.c:977: warning: implicit declaration of function ‘CPU_ALLOC’
builtin-test.c:977: warning: nested extern declaration of ‘CPU_ALLOC’
builtin-test.c:977: warning: assignment makes pointer from integer without a cast
builtin-test.c:978: warning: implicit declaration of function ‘CPU_ALLOC_SIZE’
builtin-test.c:978: warning: nested extern declaration of ‘CPU_ALLOC_SIZE’
builtin-test.c:979: warning: implicit declaration of function ‘CPU_ZERO_S’
builtin-test.c:979: warning: nested extern declaration of ‘CPU_ZERO_S’
builtin-test.c:982: warning: implicit declaration of function ‘CPU_FREE’
builtin-test.c:982: warning: nested extern declaration of ‘CPU_FREE’
builtin-test.c:992: warning: implicit declaration of function ‘CPU_ISSET_S’
builtin-test.c:992: warning: nested extern declaration of ‘CPU_ISSET_S’
builtin-test.c:998: warning: implicit declaration of function ‘CPU_CLR_S’
builtin-test.c:998: warning: nested extern declaration of ‘CPU_CLR_S’
make: *** [builtin-test.o] Error 1
This problem is introduced in 3e7c439a. CPU_ALLOC and related macros are
missing in sched__get_first_possible_cpu function. In 54489c18, commiter
mentioned that CPU_ALLOC has been removed. So CPU_ALLOC calls in this
function are removed to let perf to be built.
Signed-off-by: Vinson Lee <vlee@...tter.com>
Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Vinson Lee <vlee@...tter.com>
Cc: Zheng Liu <wenqing.lz@...bao.com>
Link: http://lkml.kernel.org/r/1352422726-31114-1-git-send-email-vlee@twitter.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
tools/perf/builtin-test.c | 38 ++++++++++++--------------------------
1 file changed, 12 insertions(+), 26 deletions(-)
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -1154,19 +1154,13 @@ static int test__parse_events(void)
return ret;
}
-static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t **maskp,
- size_t *sizep)
+static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t *maskp)
{
- cpu_set_t *mask;
- size_t size;
int i, cpu = -1, nrcpus = 1024;
realloc:
- mask = CPU_ALLOC(nrcpus);
- size = CPU_ALLOC_SIZE(nrcpus);
- CPU_ZERO_S(size, mask);
+ CPU_ZERO(maskp);
- if (sched_getaffinity(pid, size, mask) == -1) {
- CPU_FREE(mask);
+ if (sched_getaffinity(pid, sizeof(*maskp), maskp) == -1) {
if (errno == EINVAL && nrcpus < (1024 << 8)) {
nrcpus = nrcpus << 2;
goto realloc;
@@ -1176,19 +1170,14 @@ realloc:
}
for (i = 0; i < nrcpus; i++) {
- if (CPU_ISSET_S(i, size, mask)) {
- if (cpu == -1) {
+ if (CPU_ISSET(i, maskp)) {
+ if (cpu == -1)
cpu = i;
- *maskp = mask;
- *sizep = size;
- } else
- CPU_CLR_S(i, size, mask);
+ else
+ CPU_CLR(i, maskp);
}
}
- if (cpu == -1)
- CPU_FREE(mask);
-
return cpu;
}
@@ -1199,8 +1188,8 @@ static int test__PERF_RECORD(void)
.freq = 10,
.mmap_pages = 256,
};
- cpu_set_t *cpu_mask = NULL;
- size_t cpu_mask_size = 0;
+ cpu_set_t cpu_mask;
+ size_t cpu_mask_size = sizeof(cpu_mask);
struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
struct perf_evsel *evsel;
struct perf_sample sample;
@@ -1265,8 +1254,7 @@ static int test__PERF_RECORD(void)
evsel->attr.sample_type |= PERF_SAMPLE_TIME;
perf_evlist__config_attrs(evlist, &opts);
- err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask,
- &cpu_mask_size);
+ err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask);
if (err < 0) {
pr_debug("sched__get_first_possible_cpu: %s\n", strerror(errno));
goto out_delete_evlist;
@@ -1277,9 +1265,9 @@ static int test__PERF_RECORD(void)
/*
* So that we can check perf_sample.cpu on all the samples.
*/
- if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, cpu_mask) < 0) {
+ if (sched_setaffinity(evlist->workload.pid, cpu_mask_size, &cpu_mask) < 0) {
pr_debug("sched_setaffinity: %s\n", strerror(errno));
- goto out_free_cpu_mask;
+ goto out_delete_evlist;
}
/*
@@ -1472,8 +1460,6 @@ found_exit:
}
out_err:
perf_evlist__munmap(evlist);
-out_free_cpu_mask:
- CPU_FREE(cpu_mask);
out_delete_evlist:
perf_evlist__delete(evlist);
out:
--
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