| Message ID | 20170812134901.30237-1-wangnan0@huawei.com |
|---|---|
| State | New |
| Headers | show |
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)
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 <wangnan0@huawei.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Li Zefan <lizefan@huawei.com> --- tools/perf/tests/bpf-script-test-prologue.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.10.1