From: Leo Yan <leo.yan@linaro.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org
Cc: Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v3 07/10] perf: Cleanup for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
Date: Sun, 4 Jul 2021 15:16:41 +0800 [thread overview]
Message-ID: <20210704071644.107397-8-leo.yan@linaro.org> (raw)
In-Reply-To: <20210704071644.107397-1-leo.yan@linaro.org>
Since the __sync functions have been dropped, This patch removes unused
build and checking for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT in perf tool.
Note, there have a test for SYNC_COMPARE_AND_SWAP and the test file is
located in build/feature/test-sync-compare-and-swap.c. Since there
still has several components using the sync functions, it's deliberately
to not be removed.
$ cd linux/tools
$ git grep __sync_val_compare_and_swap | awk '{ printf $1"\n" }'
build/feature/test-sync-compare-and-swap.c:
include/asm-generic/atomic-gcc.h:
testing/selftests/bpf/progs/atomics.c:
testing/selftests/bpf/progs/atomics.c:
testing/selftests/bpf/progs/atomics.c:
testing/selftests/bpf/progs/atomics.c:
testing/selftests/futex/include/atomic.h:
testing/selftests/futex/include/futextest.h:
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
tools/perf/Makefile.config | 4 ----
tools/perf/util/auxtrace.c | 5 -----
2 files changed, 9 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index eb8e487ef90b..4a0d9a6defc7 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -349,10 +349,6 @@ CXXFLAGS += $(INC_FLAGS)
LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
-ifeq ($(feature-sync-compare-and-swap), 1)
- CFLAGS += -DHAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
-endif
-
ifeq ($(feature-pthread-attr-setaffinity-np), 1)
CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
endif
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 44bd04dbb6d6..db6255b55c90 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -130,11 +130,6 @@ int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
return 0;
}
-#if BITS_PER_LONG != 64 && !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
- pr_err("Cannot use AUX area tracing mmaps\n");
- return -1;
-#endif
-
pc->aux_offset = mp->offset;
pc->aux_size = mp->len;
--
2.25.1
next prev parent reply other threads:[~2021-07-04 7:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-04 7:16 [PATCH v3 00/10] perf: Refine barriers for AUX ring buffer Leo Yan
2021-07-04 7:16 ` [PATCH v3 01/10] perf/ring_buffer: Add comment for barriers on " Leo Yan
2021-07-04 7:16 ` [PATCH v3 02/10] coresight: tmc-etr: Add barrier after updating " Leo Yan
2021-07-04 7:16 ` [PATCH v3 03/10] coresight: tmc-etf: Add comment for store ordering Leo Yan
2021-07-04 7:16 ` [PATCH v3 04/10] perf/x86: Add barrier after updating bts Leo Yan
2021-07-04 7:16 ` [PATCH v3 05/10] perf auxtrace: Drop legacy __sync functions Leo Yan
2021-07-10 12:34 ` Adrian Hunter
2021-07-11 7:41 ` Leo Yan
2021-07-04 7:16 ` [PATCH v3 06/10] perf auxtrace: Remove auxtrace_mmap__read_snapshot_head() Leo Yan
2021-07-04 7:16 ` Leo Yan [this message]
2021-07-10 12:36 ` [PATCH v3 07/10] perf: Cleanup for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT Adrian Hunter
2021-07-11 8:08 ` Leo Yan
2021-07-04 7:16 ` [PATCH v3 08/10] perf auxtrace: Use WRITE_ONCE() for updating aux_tail Leo Yan
2021-07-04 7:16 ` [PATCH v3 09/10] perf env: Set kernel bit mode Leo Yan
2021-07-04 7:16 ` [PATCH v3 10/10] perf auxtrace: Add compat_auxtrace_mmap__{read_head|write_tail} Leo Yan
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