On Tue, Dec 18, 2018 at 07:07:27PM -0300, Arnaldo Carvalho de Melo wrote:
> From: Arnaldo Carvalho de Melo <[email protected]>
>
> Helps with comparing 'strace' and 'perf trace' output, for mutual
> regression testing.
>
> Cc: Adrian Hunter <[email protected]>
> Cc: Jiri Olsa <[email protected]>
> Cc: Luis Cláudio Gonçalves <[email protected]>
> Cc: Namhyung Kim <[email protected]>
> Cc: Wang Nan <[email protected]>
> Link: https://lkml.kernel.org/n/[email protected]
> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
> ---
> tools/perf/trace/beauty/mmap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/trace/beauty/mmap.c b/tools/perf/trace/beauty/mmap.c
> index 138f36a47fb1..eb31089790e3 100644
> --- a/tools/perf/trace/beauty/mmap.c
> +++ b/tools/perf/trace/beauty/mmap.c
> @@ -17,8 +17,8 @@ static size_t syscall_arg__scnprintf_mmap_prot(char *bf,
> size_t size,
> prot &= ~PROT_##n; \
> }
>
> - P_MMAP_PROT(EXEC);
> P_MMAP_PROT(READ);
> + P_MMAP_PROT(EXEC);
> P_MMAP_PROT(WRITE);
EXEC should be printed after WRITE..
$ cat mmap.c
#include <sys/mman.h>
int main(void)
{
mmap(0, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0);
return 0;
}
$ strace -e mmap ./a.out
...
mmap(NULL, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f4c643ec000
+++ exited with 0 +++
Thanks,
Namhyung
> P_MMAP_PROT(SEM);
> P_MMAP_PROT(GROWSDOWN);
> --
> 2.19.2
>
