Re: [RFC 1/4] rseq/param_test: Convert test_data_entry::count to intptr_t
From: Mathieu Desnoyers <hidden>
Date: 2016-07-28 03:08:01
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----- On Jul 27, 2016, at 11:05 AM, Boqun Feng boqun.feng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:
The current semantics of do_resq() is to do a intptr_t type store in
successful cases, however, in test_percpu_{inc,spinlock}, we use
test_data_entry::count as the location to store, whose type is int.
intptr_t and int have different size on LP64 systems, and despite the
inconsistency of types, having test_data_entry::count as int needs more
care on endian handling.
To make things simpler and more consistent, convert
test_data_entry::count to type intptr_t, which also makes the coming
tests for ppc64le and ppc64 share the same code.Folded into my rseq tests patch for next round, thanks! I also took care of basic_percpu_ops_test.c which had the same issue. Thanks! Mathieu
quoted hunk ↗ jump to hunk
Signed-off-by: Boqun Feng <redacted> --- tools/testing/selftests/rseq/param_test.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)diff --git a/tools/testing/selftests/rseq/param_test.cb/tools/testing/selftests/rseq/param_test.c index f95fba5a1b2a..db25e0a818e5 100644--- a/tools/testing/selftests/rseq/param_test.c +++ b/tools/testing/selftests/rseq/param_test.c@@ -124,7 +124,7 @@ struct percpu_lock {}; struct test_data_entry { - int count; + intptr_t count; } __attribute__((aligned(128))); struct spinlock_test_data {@@ -234,7 +234,8 @@ void *test_percpu_spinlock_thread(void *arg)void test_percpu_spinlock(void) { const int num_threads = opt_threads; - int i, sum, ret; + int i, ret; + intptr_t sum; pthread_t test_threads[num_threads]; struct spinlock_test_data data; struct spinlock_thread_test_data thread_data[num_threads];@@ -308,7 +309,8 @@ void *test_percpu_inc_thread(void *arg)void test_percpu_inc(void) { const int num_threads = opt_threads; - int i, sum, ret; + int i, ret; + intptr_t sum; pthread_t test_threads[num_threads]; struct inc_test_data data; struct inc_thread_test_data thread_data[num_threads]; -- 2.9.0
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com