From: Leo Yan leo.yan@linaro.org
[ Upstream commit eadcab4c7a66e1df03d32da0db55d89fd9343fcc ]
This patch defines a macro RAW_SYSCALL_ARGS_NUM to replace the open coded number '6'.
Signed-off-by: Leo Yan leo.yan@linaro.org Acked-by: Ian Rogers irogers@google.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Ingo Molnar mingo@redhat.com Cc: Jiri Olsa jolsa@kernel.org Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20221121075237.127706-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Stable-dep-of: 03e9a5d8eb55 ("perf trace: Handle failure when trace point folder is missed") Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/builtin-trace.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 4cb3252623f5..e41b6ffafbd3 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -86,6 +86,8 @@ # define F_LINUX_SPECIFIC_BASE 1024 #endif
+#define RAW_SYSCALL_ARGS_NUM 6 + /* * strtoul: Go from a string to a value, i.e. for msr: MSR_FS_BASE to 0xc0000100 */ @@ -105,7 +107,7 @@ struct syscall_fmt { const char *sys_enter, *sys_exit; } bpf_prog_name; - struct syscall_arg_fmt arg[6]; + struct syscall_arg_fmt arg[RAW_SYSCALL_ARGS_NUM]; u8 nr_args; bool errpid; bool timeout; @@ -1018,7 +1020,7 @@ struct syscall { */ struct bpf_map_syscall_entry { bool enabled; - u16 string_args_len[6]; + u16 string_args_len[RAW_SYSCALL_ARGS_NUM]; };
/* @@ -1443,7 +1445,7 @@ static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args) { int idx;
- if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0) + if (nr_args == RAW_SYSCALL_ARGS_NUM && sc->fmt && sc->fmt->nr_args != 0) nr_args = sc->fmt->nr_args;
sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt)); @@ -1571,7 +1573,8 @@ static int trace__read_syscall_info(struct trace *trace, int id) sc->tp_format = trace_event__tp_format("syscalls", tp_name); }
- if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? 6 : sc->tp_format->format.nr_fields)) + if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? + RAW_SYSCALL_ARGS_NUM : sc->tp_format->format.nr_fields)) return -ENOMEM;
if (IS_ERR(sc->tp_format))