xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools lib traceevent: Add support for __print_hex()

Browse Source 
Since the __print_hex() function is used in print fmt now, add
corresponding parser routines. This makes the output of perf script on
the kvm_emulate_insn event not to fail any more.

 before:
      kvm_emulate_insn:     [FAILED TO PARSE] rip=3238197797 ...

 after:
      kvm_emulate_insn:     0:c102fa25:89 10 (prot32)

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1340757701-10711-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2012-06-27 09:41:41 +09:00
committed by Arnaldo Carvalho de Melo
parent b700807196
commit e080e6f1c8
4 changed files with 89 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
tools/lib/traceevent/event-parse.c
View File

@@ -697,6 +697,10 @@ static void free_arg(struct print_arg *arg)
free_arg(arg->symbol.field);
free_flag_sym(arg->symbol.symbols);
break;
case PRINT_HEX:
free_arg(arg->hex.field);
free_arg(arg->hex.size);
break;
case PRINT_TYPE:
free(arg->typecast.type);
free_arg(arg->typecast.item);
@@ -2259,6 +2263,45 @@ process_symbols(struct event_format *event, struct print_arg *arg, char **tok)
return EVENT_ERROR;
}
static enum event_type
process_hex(struct event_format *event, struct print_arg *arg, char **tok)
{
struct print_arg *field;
enum event_type type;
char *token;
memset(arg, 0, sizeof(*arg));
arg->type = PRINT_HEX;
field = alloc_arg();
type = process_arg(event, field, &token);
if (test_type_token(type, token, EVENT_DELIM, ","))
goto out_free;
arg->hex.field = field;
free_token(token);
field = alloc_arg();
type = process_arg(event, field, &token);
if (test_type_token(type, token, EVENT_DELIM, ")"))
goto out_free;
arg->hex.size = field;
free_token(token);
type = read_token_item(tok);
return type;
out_free:
free_arg(field);
free_token(token);
*tok = NULL;
return EVENT_ERROR;
}
static enum event_type
process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok)
{
@@ -2488,6 +2531,10 @@ process_function(struct event_format *event, struct print_arg *arg,
is_symbolic_field = 1;
return process_symbols(event, arg, tok);
}
if (strcmp(token, "__print_hex") == 0) {
free_token(token);
return process_hex(event, arg, tok);
}
if (strcmp(token, "__get_str") == 0) {
free_token(token);
return process_str(event, arg, tok);
@@ -2995,6 +3042,7 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg
break;
case PRINT_FLAGS:
case PRINT_SYMBOL:
case PRINT_HEX:
break;
case PRINT_TYPE:
val = eval_num_arg(data, size, event, arg->typecast.item);
@@ -3218,8 +3266,9 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
unsigned long long val, fval;
unsigned long addr;
char *str;
unsigned char *hex;
int print;
int len;
int i, len;
switch (arg->type) {
case PRINT_NULL:
@@ -3284,6 +3333,23 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
}
}
break;
case PRINT_HEX:
field = arg->hex.field->field.field;
if (!field) {
str = arg->hex.field->field.name;
field = pevent_find_any_field(event, str);
if (!field)
die("field %s not found", str);
arg->hex.field->field.field = field;
}
hex = data + field->offset;
len = eval_num_arg(data, size, event, arg->hex.size);
for (i = 0; i < len; i++) {
if (i)
trace_seq_putc(s, ' ');
trace_seq_printf(s, "%02x", hex[i]);
}
break;
case PRINT_TYPE:
break;
@@ -4294,6 +4360,13 @@ static void print_args(struct print_arg *args)
trace_seq_destroy(&s);
printf(")");
break;
case PRINT_HEX:
printf("__print_hex(");
print_args(args->hex.field);
printf(", ");
print_args(args->hex.size);
printf(")");
break;
case PRINT_STRING:
case PRINT_BSTRING:
printf("__get_str(%s)", args->string.string);