From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wang Nan Subject: [PATCH] perf test llvm: Fix f_mode endianness problem Date: Fri, 11 Aug 2017 05:44:44 +0000 (UTC) Message-ID: <20170812134901.30237-1-wangnan0@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from szxga04-in.huawei.com ([45.249.212.190]:3508 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752208AbdHKFon (ORCPT ); Fri, 11 Aug 2017 01:44:43 -0400 Date: Sat, 12 Aug 2017 13:49:01 +0000 Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: acme@kernel.org, tmricht@linux.vnet.ibm.com Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Wang Nan , Alexei Starovoitov , Hendrik Brueckner , Li Zefan Perf BPF prologue generator unconditionally fetches 8 bytes for function parameters. On big endian machine, a casting is resquired if the parameter is not u64. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Thomas Richter Cc: Alexei Starovoitov Cc: Hendrik Brueckner Cc: Li Zefan --- tools/perf/tests/bpf-script-test-prologue.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/bpf-script-test-prologue.c b/tools/perf/tests/bpf-script-test-prologue.c index b4ebc75..43f1e16 100644 --- a/tools/perf/tests/bpf-script-test-prologue.c +++ b/tools/perf/tests/bpf-script-test-prologue.c @@ -26,9 +26,11 @@ static void (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) = (void *) 6; SEC("func=null_lseek file->f_mode offset orig") -int bpf_func__null_lseek(void *ctx, int err, unsigned long f_mode, +int bpf_func__null_lseek(void *ctx, int err, unsigned long _f_mode, unsigned long offset, unsigned long orig) { + fmode_t f_mode = (fmode_t)_f_mode; + if (err) return 0; if (f_mode & FMODE_WRITE) -- 2.10.1