This is a note to let you know that I've just added the patch titled
perf trace: Add the syscall_arg_fmt pointer to syscall_arg
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-trace-add-the-syscall_arg_fmt-pointer-to-syscal.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e6a3c55a4b2d8c87c9871d4346d66a01df804035
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Date: Fri Oct 4 14:52:30 2019 -0300
perf trace: Add the syscall_arg_fmt pointer to syscall_arg
[ Upstream commit 888ca854e275fcfbb13206d32bb01c0576fc5546 ]
So that the scnprintf beautifiers can access it, as will be the case
with the char array one in the following csets, that needs to know
the number of elements in an array.
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Luis Cláudio Gonçalves <lclaudio@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-01qmjqv6cb1nj1qy4khdexce@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Stable-dep-of: 03e9a5d8eb55 ("perf trace: Handle failure when trace point folder is missed")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 175150e90cdc..e01952883cbc 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -86,6 +86,28 @@
# define F_LINUX_SPECIFIC_BASE 1024
#endif
+struct syscall_arg_fmt {
+ size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
+ unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
+ void *parm;
+ const char *name;
+ bool show_zero;
+};
+
+struct syscall_fmt {
+ const char *name;
+ const char *alias;
+ struct {
+ const char *sys_enter,
+ *sys_exit;
+ } bpf_prog_name;
+ struct syscall_arg_fmt arg[6];
+ u8 nr_args;
+ bool errpid;
+ bool timeout;
+ bool hexret;
+};
+
struct trace {
struct perf_tool tool;
struct syscalltbl *sctbl;
@@ -694,28 +716,6 @@ static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
#include "trace/beauty/socket_type.c"
#include "trace/beauty/waitid_options.c"
-struct syscall_arg_fmt {
- size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
- unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
- void *parm;
- const char *name;
- bool show_zero;
-};
-
-struct syscall_fmt {
- const char *name;
- const char *alias;
- struct {
- const char *sys_enter,
- *sys_exit;
- } bpf_prog_name;
- struct syscall_arg_fmt arg[6];
- u8 nr_args;
- bool errpid;
- bool timeout;
- bool hexret;
-};
-
static struct syscall_fmt syscall_fmts[] = {
{ .name = "access",
.arg = { [1] = { .scnprintf = SCA_ACCMODE, /* mode */ }, }, },
@@ -1746,6 +1746,7 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
if (arg.mask & bit)
continue;
+ arg.fmt = &sc->arg_fmt[arg.idx];
val = syscall_arg__val(&arg, arg.idx);
/*
* Some syscall args need some mask, most don't and
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index 7e06605f7c76..4cc4f6b3d4a1 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -78,6 +78,8 @@ struct augmented_arg {
u64 value[];
};
+struct syscall_arg_fmt;
+
/**
* @val: value of syscall argument being formatted
* @args: All the args, use syscall_args__val(arg, nth) to access one
@@ -94,6 +96,7 @@ struct augmented_arg {
struct syscall_arg {
unsigned long val;
unsigned char *args;
+ struct syscall_arg_fmt *fmt;
struct {
struct augmented_arg *args;
int size;
