mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-11-28 20:44:00 +08:00
tracing: Add simple expression support to hist triggers
Add support for simple addition, subtraction, and unary expressions (-(expr) and expr, where expr = b-a, a+b, a+b+c) to hist triggers, in order to support a minimal set of useful inter-event calculations. These operations are needed for calculating latencies between events (timestamp1-timestamp0) and for combined latencies (latencies over 3 or more events). In the process, factor out some common code from key and value parsing. Link: http://lkml.kernel.org/r/9a9308ead4fe32a433d9c7e95921fb798394f6b2.1516069914.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> [kbuild test robot fix, add static to parse_atom()] Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> [ Replaced '//' comments with normal /* */ comments ] Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Tom Zanussi
Steven Rostedt (VMware)
parent
2ece94fbd2
commit
100719dcef
@ -32,6 +32,13 @@ typedef u64 (*hist_field_fn_t) (struct hist_field *field, void *event,
|
||||
#define HIST_FIELD_OPERANDS_MAX 2
|
||||
#define HIST_FIELDS_MAX (TRACING_MAP_FIELDS_MAX + TRACING_MAP_VARS_MAX)
|
||||
|
||||
enum field_op_id {
|
||||
FIELD_OP_NONE,
|
||||
FIELD_OP_PLUS,
|
||||
FIELD_OP_MINUS,
|
||||
FIELD_OP_UNARY_MINUS,
|
||||
};
|
||||
|
||||
struct hist_var {
|
||||
char *name;
|
||||
struct hist_trigger_data *hist_data;
|
||||
@ -48,6 +55,8 @@ struct hist_field {
|
||||
struct hist_field *operands[HIST_FIELD_OPERANDS_MAX];
|
||||
struct hist_trigger_data *hist_data;
|
||||
struct hist_var var;
|
||||
enum field_op_id operator;
|
||||
char *name;
|
||||
};
|
||||
|
||||
static u64 hist_field_none(struct hist_field *field, void *event,
|
||||
@ -98,6 +107,41 @@ static u64 hist_field_log2(struct hist_field *hist_field, void *event,
|
||||
return (u64) ilog2(roundup_pow_of_two(val));
|
||||
}
|
||||
|
||||
static u64 hist_field_plus(struct hist_field *hist_field, void *event,
|
||||
struct ring_buffer_event *rbe)
|
||||
{
|
||||
struct hist_field *operand1 = hist_field->operands[0];
|
||||
struct hist_field *operand2 = hist_field->operands[1];
|
||||
|
||||
u64 val1 = operand1->fn(operand1, event, rbe);
|
||||
u64 val2 = operand2->fn(operand2, event, rbe);
|
||||
|
||||
return val1 + val2;
|
||||
}
|
||||
|
||||
static u64 hist_field_minus(struct hist_field *hist_field, void *event,
|
||||
struct ring_buffer_event *rbe)
|
||||
{
|
||||
struct hist_field *operand1 = hist_field->operands[0];
|
||||
struct hist_field *operand2 = hist_field->operands[1];
|
||||
|
||||
u64 val1 = operand1->fn(operand1, event, rbe);
|
||||
u64 val2 = operand2->fn(operand2, event, rbe);
|
||||
|
||||
return val1 - val2;
|
||||
}
|
||||
|
||||
static u64 hist_field_unary_minus(struct hist_field *hist_field, void *event,
|
||||
struct ring_buffer_event *rbe)
|
||||
{
|
||||
struct hist_field *operand = hist_field->operands[0];
|
||||
|
||||
s64 sval = (s64)operand->fn(operand, event, rbe);
|
||||
u64 val = (u64)-sval;
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
#define DEFINE_HIST_FIELD_FN(type) \
|
||||
static u64 hist_field_##type(struct hist_field *hist_field, \
|
||||
void *event, \
|
||||
@ -147,6 +191,7 @@ enum hist_field_flags {
|
||||
HIST_FIELD_FL_TIMESTAMP = 1 << 10,
|
||||
HIST_FIELD_FL_TIMESTAMP_USECS = 1 << 11,
|
||||
HIST_FIELD_FL_VAR = 1 << 12,
|
||||
HIST_FIELD_FL_EXPR = 1 << 13,
|
||||
};
|
||||
|
||||
struct var_defs {
|
||||
@ -258,6 +303,8 @@ static const char *hist_field_name(struct hist_field *field,
|
||||
field_name = hist_field_name(field->operands[0], ++level);
|
||||
else if (field->flags & HIST_FIELD_FL_TIMESTAMP)
|
||||
field_name = "common_timestamp";
|
||||
else if (field->flags & HIST_FIELD_FL_EXPR)
|
||||
field_name = field->name;
|
||||
|
||||
if (field_name == NULL)
|
||||
field_name = "";
|
||||
@ -519,12 +566,104 @@ static const char *get_hist_field_flags(struct hist_field *hist_field)
|
||||
return flags_str;
|
||||
}
|
||||
|
||||
static void expr_field_str(struct hist_field *field, char *expr)
|
||||
{
|
||||
strcat(expr, hist_field_name(field, 0));
|
||||
|
||||
if (field->flags) {
|
||||
const char *flags_str = get_hist_field_flags(field);
|
||||
|
||||
if (flags_str) {
|
||||
strcat(expr, ".");
|
||||
strcat(expr, flags_str);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static char *expr_str(struct hist_field *field, unsigned int level)
|
||||
{
|
||||
char *expr;
|
||||
|
||||
if (level > 1)
|
||||
return NULL;
|
||||
|
||||
expr = kzalloc(MAX_FILTER_STR_VAL, GFP_KERNEL);
|
||||
if (!expr)
|
||||
return NULL;
|
||||
|
||||
if (!field->operands[0]) {
|
||||
expr_field_str(field, expr);
|
||||
return expr;
|
||||
}
|
||||
|
||||
if (field->operator == FIELD_OP_UNARY_MINUS) {
|
||||
char *subexpr;
|
||||
|
||||
strcat(expr, "-(");
|
||||
subexpr = expr_str(field->operands[0], ++level);
|
||||
if (!subexpr) {
|
||||
kfree(expr);
|
||||
return NULL;
|
||||
}
|
||||
strcat(expr, subexpr);
|
||||
strcat(expr, ")");
|
||||
|
||||
kfree(subexpr);
|
||||
|
||||
return expr;
|
||||
}
|
||||
|
||||
expr_field_str(field->operands[0], expr);
|
||||
|
||||
switch (field->operator) {
|
||||
case FIELD_OP_MINUS:
|
||||
strcat(expr, "-");
|
||||
break;
|
||||
case FIELD_OP_PLUS:
|
||||
strcat(expr, "+");
|
||||
break;
|
||||
default:
|
||||
kfree(expr);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
expr_field_str(field->operands[1], expr);
|
||||
|
||||
return expr;
|
||||
}
|
||||
|
||||
static int contains_operator(char *str)
|
||||
{
|
||||
enum field_op_id field_op = FIELD_OP_NONE;
|
||||
char *op;
|
||||
|
||||
op = strpbrk(str, "+-");
|
||||
if (!op)
|
||||
return FIELD_OP_NONE;
|
||||
|
||||
switch (*op) {
|
||||
case '-':
|
||||
if (*str == '-')
|
||||
field_op = FIELD_OP_UNARY_MINUS;
|
||||
else
|
||||
field_op = FIELD_OP_MINUS;
|
||||
break;
|
||||
case '+':
|
||||
field_op = FIELD_OP_PLUS;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return field_op;
|
||||
}
|
||||
|
||||
static void destroy_hist_field(struct hist_field *hist_field,
|
||||
unsigned int level)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
if (level > 2)
|
||||
if (level > 3)
|
||||
return;
|
||||
|
||||
if (!hist_field)
|
||||
@ -534,6 +673,7 @@ static void destroy_hist_field(struct hist_field *hist_field,
|
||||
destroy_hist_field(hist_field->operands[i], level + 1);
|
||||
|
||||
kfree(hist_field->var.name);
|
||||
kfree(hist_field->name);
|
||||
|
||||
kfree(hist_field);
|
||||
}
|
||||
@ -554,6 +694,9 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data,
|
||||
|
||||
hist_field->hist_data = hist_data;
|
||||
|
||||
if (flags & HIST_FIELD_FL_EXPR)
|
||||
goto out; /* caller will populate */
|
||||
|
||||
if (flags & HIST_FIELD_FL_HITCOUNT) {
|
||||
hist_field->fn = hist_field_counter;
|
||||
goto out;
|
||||
@ -626,6 +769,257 @@ static void destroy_hist_fields(struct hist_trigger_data *hist_data)
|
||||
}
|
||||
}
|
||||
|
||||
static struct ftrace_event_field *
|
||||
parse_field(struct hist_trigger_data *hist_data, struct trace_event_file *file,
|
||||
char *field_str, unsigned long *flags)
|
||||
{
|
||||
struct ftrace_event_field *field = NULL;
|
||||
char *field_name, *modifier, *str;
|
||||
|
||||
modifier = str = kstrdup(field_str, GFP_KERNEL);
|
||||
if (!modifier)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
field_name = strsep(&modifier, ".");
|
||||
if (modifier) {
|
||||
if (strcmp(modifier, "hex") == 0)
|
||||
*flags |= HIST_FIELD_FL_HEX;
|
||||
else if (strcmp(modifier, "sym") == 0)
|
||||
*flags |= HIST_FIELD_FL_SYM;
|
||||
else if (strcmp(modifier, "sym-offset") == 0)
|
||||
*flags |= HIST_FIELD_FL_SYM_OFFSET;
|
||||
else if ((strcmp(modifier, "execname") == 0) &&
|
||||
(strcmp(field_name, "common_pid") == 0))
|
||||
*flags |= HIST_FIELD_FL_EXECNAME;
|
||||
else if (strcmp(modifier, "syscall") == 0)
|
||||
*flags |= HIST_FIELD_FL_SYSCALL;
|
||||
else if (strcmp(modifier, "log2") == 0)
|
||||
*flags |= HIST_FIELD_FL_LOG2;
|
||||
else if (strcmp(modifier, "usecs") == 0)
|
||||
*flags |= HIST_FIELD_FL_TIMESTAMP_USECS;
|
||||
else {
|
||||
field = ERR_PTR(-EINVAL);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (strcmp(field_name, "common_timestamp") == 0) {
|
||||
*flags |= HIST_FIELD_FL_TIMESTAMP;
|
||||
hist_data->enable_timestamps = true;
|
||||
if (*flags & HIST_FIELD_FL_TIMESTAMP_USECS)
|
||||
hist_data->attrs->ts_in_usecs = true;
|
||||
} else {
|
||||
field = trace_find_event_field(file->event_call, field_name);
|
||||
if (!field || !field->size) {
|
||||
field = ERR_PTR(-EINVAL);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
out:
|
||||
kfree(str);
|
||||
|
||||
return field;
|
||||
}
|
||||
|
||||
static struct hist_field *parse_atom(struct hist_trigger_data *hist_data,
|
||||
struct trace_event_file *file, char *str,
|
||||
unsigned long *flags, char *var_name)
|
||||
{
|
||||
struct ftrace_event_field *field = NULL;
|
||||
struct hist_field *hist_field = NULL;
|
||||
int ret = 0;
|
||||
|
||||
field = parse_field(hist_data, file, str, flags);
|
||||
if (IS_ERR(field)) {
|
||||
ret = PTR_ERR(field);
|
||||
goto out;
|
||||
}
|
||||
|
||||
hist_field = create_hist_field(hist_data, field, *flags, var_name);
|
||||
if (!hist_field) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
return hist_field;
|
||||
out:
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static struct hist_field *parse_expr(struct hist_trigger_data *hist_data,
|
||||
struct trace_event_file *file,
|
||||
char *str, unsigned long flags,
|
||||
char *var_name, unsigned int level);
|
||||
|
||||
static struct hist_field *parse_unary(struct hist_trigger_data *hist_data,
|
||||
struct trace_event_file *file,
|
||||
char *str, unsigned long flags,
|
||||
char *var_name, unsigned int level)
|
||||
{
|
||||
struct hist_field *operand1, *expr = NULL;
|
||||
unsigned long operand_flags;
|
||||
int ret = 0;
|
||||
char *s;
|
||||
|
||||
/* we support only -(xxx) i.e. explicit parens required */
|
||||
|
||||
if (level > 3) {
|
||||
ret = -EINVAL;
|
||||
goto free;
|
||||
}
|
||||
|
||||
str++; /* skip leading '-' */
|
||||
|
||||
s = strchr(str, '(');
|
||||
if (s)
|
||||
str++;
|
||||
else {
|
||||
ret = -EINVAL;
|
||||
goto free;
|
||||
}
|
||||
|
||||
s = strrchr(str, ')');
|
||||
if (s)
|
||||
*s = '\0';
|
||||
else {
|
||||
ret = -EINVAL; /* no closing ')' */
|
||||
goto free;
|
||||
}
|
||||
|
||||
flags |= HIST_FIELD_FL_EXPR;
|
||||
expr = create_hist_field(hist_data, NULL, flags, var_name);
|
||||
if (!expr) {
|
||||
ret = -ENOMEM;
|
||||
goto free;
|
||||
}
|
||||
|
||||
operand_flags = 0;
|
||||
operand1 = parse_expr(hist_data, file, str, operand_flags, NULL, ++level);
|
||||
if (IS_ERR(operand1)) {
|
||||
ret = PTR_ERR(operand1);
|
||||
goto free;
|
||||
}
|
||||
|
||||
expr->flags |= operand1->flags &
|
||||
(HIST_FIELD_FL_TIMESTAMP | HIST_FIELD_FL_TIMESTAMP_USECS);
|
||||
expr->fn = hist_field_unary_minus;
|
||||
expr->operands[0] = operand1;
|
||||
expr->operator = FIELD_OP_UNARY_MINUS;
|
||||
expr->name = expr_str(expr, 0);
|
||||
|
||||
return expr;
|
||||
free:
|
||||
destroy_hist_field(expr, 0);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static int check_expr_operands(struct hist_field *operand1,
|
||||
struct hist_field *operand2)
|
||||
{
|
||||
unsigned long operand1_flags = operand1->flags;
|
||||
unsigned long operand2_flags = operand2->flags;
|
||||
|
||||
if ((operand1_flags & HIST_FIELD_FL_TIMESTAMP_USECS) !=
|
||||
(operand2_flags & HIST_FIELD_FL_TIMESTAMP_USECS))
|
||||
return -EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct hist_field *parse_expr(struct hist_trigger_data *hist_data,
|
||||
struct trace_event_file *file,
|
||||
char *str, unsigned long flags,
|
||||
char *var_name, unsigned int level)
|
||||
{
|
||||
struct hist_field *operand1 = NULL, *operand2 = NULL, *expr = NULL;
|
||||
unsigned long operand_flags;
|
||||
int field_op, ret = -EINVAL;
|
||||
char *sep, *operand1_str;
|
||||
|
||||
if (level > 3)
|
||||
return ERR_PTR(-EINVAL);
|
||||
|
||||
field_op = contains_operator(str);
|
||||
|
||||
if (field_op == FIELD_OP_NONE)
|
||||
return parse_atom(hist_data, file, str, &flags, var_name);
|
||||
|
||||
if (field_op == FIELD_OP_UNARY_MINUS)
|
||||
return parse_unary(hist_data, file, str, flags, var_name, ++level);
|
||||
|
||||
switch (field_op) {
|
||||
case FIELD_OP_MINUS:
|
||||
sep = "-";
|
||||
break;
|
||||
case FIELD_OP_PLUS:
|
||||
sep = "+";
|
||||
break;
|
||||
default:
|
||||
goto free;
|
||||
}
|
||||
|
||||
operand1_str = strsep(&str, sep);
|
||||
if (!operand1_str || !str)
|
||||
goto free;
|
||||
|
||||
operand_flags = 0;
|
||||
operand1 = parse_atom(hist_data, file, operand1_str,
|
||||
&operand_flags, NULL);
|
||||
if (IS_ERR(operand1)) {
|
||||
ret = PTR_ERR(operand1);
|
||||
operand1 = NULL;
|
||||
goto free;
|
||||
}
|
||||
|
||||
/* rest of string could be another expression e.g. b+c in a+b+c */
|
||||
operand_flags = 0;
|
||||
operand2 = parse_expr(hist_data, file, str, operand_flags, NULL, ++level);
|
||||
if (IS_ERR(operand2)) {
|
||||
ret = PTR_ERR(operand2);
|
||||
operand2 = NULL;
|
||||
goto free;
|
||||
}
|
||||
|
||||
ret = check_expr_operands(operand1, operand2);
|
||||
if (ret)
|
||||
goto free;
|
||||
|
||||
flags |= HIST_FIELD_FL_EXPR;
|
||||
|
||||
flags |= operand1->flags &
|
||||
(HIST_FIELD_FL_TIMESTAMP | HIST_FIELD_FL_TIMESTAMP_USECS);
|
||||
|
||||
expr = create_hist_field(hist_data, NULL, flags, var_name);
|
||||
if (!expr) {
|
||||
ret = -ENOMEM;
|
||||
goto free;
|
||||
}
|
||||
|
||||
expr->operands[0] = operand1;
|
||||
expr->operands[1] = operand2;
|
||||
expr->operator = field_op;
|
||||
expr->name = expr_str(expr, 0);
|
||||
|
||||
switch (field_op) {
|
||||
case FIELD_OP_MINUS:
|
||||
expr->fn = hist_field_minus;
|
||||
break;
|
||||
case FIELD_OP_PLUS:
|
||||
expr->fn = hist_field_plus;
|
||||
break;
|
||||
default:
|
||||
goto free;
|
||||
}
|
||||
|
||||
return expr;
|
||||
free:
|
||||
destroy_hist_field(operand1, 0);
|
||||
destroy_hist_field(operand2, 0);
|
||||
destroy_hist_field(expr, 0);
|
||||
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static int create_hitcount_val(struct hist_trigger_data *hist_data)
|
||||
{
|
||||
hist_data->fields[HITCOUNT_IDX] =
|
||||
@ -648,37 +1042,17 @@ static int __create_val_field(struct hist_trigger_data *hist_data,
|
||||
char *var_name, char *field_str,
|
||||
unsigned long flags)
|
||||
{
|
||||
struct ftrace_event_field *field = NULL;
|
||||
char *field_name;
|
||||
struct hist_field *hist_field;
|
||||
int ret = 0;
|
||||
|
||||
field_name = strsep(&field_str, ".");
|
||||
if (field_str) {
|
||||
if (strcmp(field_str, "hex") == 0)
|
||||
flags |= HIST_FIELD_FL_HEX;
|
||||
else {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (strcmp(field_name, "common_timestamp") == 0) {
|
||||
flags |= HIST_FIELD_FL_TIMESTAMP;
|
||||
hist_data->enable_timestamps = true;
|
||||
} else {
|
||||
field = trace_find_event_field(file->event_call, field_name);
|
||||
if (!field || !field->size) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
hist_data->fields[val_idx] = create_hist_field(hist_data, field, flags, var_name);
|
||||
if (!hist_data->fields[val_idx]) {
|
||||
ret = -ENOMEM;
|
||||
hist_field = parse_expr(hist_data, file, field_str, flags, var_name, 0);
|
||||
if (IS_ERR(hist_field)) {
|
||||
ret = PTR_ERR(hist_field);
|
||||
goto out;
|
||||
}
|
||||
|
||||
hist_data->fields[val_idx] = hist_field;
|
||||
|
||||
++hist_data->n_vals;
|
||||
++hist_data->n_fields;
|
||||
|
||||
@ -765,8 +1139,8 @@ static int create_key_field(struct hist_trigger_data *hist_data,
|
||||
struct trace_event_file *file,
|
||||
char *field_str)
|
||||
{
|
||||
struct ftrace_event_field *field = NULL;
|
||||
struct hist_field *hist_field = NULL;
|
||||
|
||||
unsigned long flags = 0;
|
||||
unsigned int key_size;
|
||||
int ret = 0;
|
||||
@ -781,60 +1155,24 @@ static int create_key_field(struct hist_trigger_data *hist_data,
|
||||
key_size = sizeof(unsigned long) * HIST_STACKTRACE_DEPTH;
|
||||
hist_field = create_hist_field(hist_data, NULL, flags, NULL);
|
||||
} else {
|
||||
char *field_name = strsep(&field_str, ".");
|
||||
|
||||
if (field_str) {
|
||||
if (strcmp(field_str, "hex") == 0)
|
||||
flags |= HIST_FIELD_FL_HEX;
|
||||
else if (strcmp(field_str, "sym") == 0)
|
||||
flags |= HIST_FIELD_FL_SYM;
|
||||
else if (strcmp(field_str, "sym-offset") == 0)
|
||||
flags |= HIST_FIELD_FL_SYM_OFFSET;
|
||||
else if ((strcmp(field_str, "execname") == 0) &&
|
||||
(strcmp(field_name, "common_pid") == 0))
|
||||
flags |= HIST_FIELD_FL_EXECNAME;
|
||||
else if (strcmp(field_str, "syscall") == 0)
|
||||
flags |= HIST_FIELD_FL_SYSCALL;
|
||||
else if (strcmp(field_str, "log2") == 0)
|
||||
flags |= HIST_FIELD_FL_LOG2;
|
||||
else if (strcmp(field_str, "usecs") == 0)
|
||||
flags |= HIST_FIELD_FL_TIMESTAMP_USECS;
|
||||
else {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
hist_field = parse_expr(hist_data, file, field_str, flags,
|
||||
NULL, 0);
|
||||
if (IS_ERR(hist_field)) {
|
||||
ret = PTR_ERR(hist_field);
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (strcmp(field_name, "common_timestamp") == 0) {
|
||||
flags |= HIST_FIELD_FL_TIMESTAMP;
|
||||
hist_data->enable_timestamps = true;
|
||||
if (flags & HIST_FIELD_FL_TIMESTAMP_USECS)
|
||||
hist_data->attrs->ts_in_usecs = true;
|
||||
key_size = sizeof(u64);
|
||||
} else {
|
||||
field = trace_find_event_field(file->event_call, field_name);
|
||||
if (!field || !field->size) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (is_string_field(field))
|
||||
key_size = MAX_FILTER_STR_VAL;
|
||||
else
|
||||
key_size = field->size;
|
||||
}
|
||||
key_size = hist_field->size;
|
||||
}
|
||||
|
||||
hist_data->fields[key_idx] = create_hist_field(hist_data, field, flags, NULL);
|
||||
if (!hist_data->fields[key_idx]) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
hist_data->fields[key_idx] = hist_field;
|
||||
|
||||
key_size = ALIGN(key_size, sizeof(u64));
|
||||
hist_data->fields[key_idx]->size = key_size;
|
||||
hist_data->fields[key_idx]->offset = key_offset;
|
||||
|
||||
hist_data->key_size += key_size;
|
||||
|
||||
if (hist_data->key_size > HIST_KEY_SIZE_MAX) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
@ -1419,7 +1757,8 @@ hist_trigger_entry_print(struct seq_file *m,
|
||||
for (i = 1; i < hist_data->n_vals; i++) {
|
||||
field_name = hist_field_name(hist_data->fields[i], 0);
|
||||
|
||||
if (hist_data->fields[i]->flags & HIST_FIELD_FL_VAR)
|
||||
if (hist_data->fields[i]->flags & HIST_FIELD_FL_VAR ||
|
||||
hist_data->fields[i]->flags & HIST_FIELD_FL_EXPR)
|
||||
continue;
|
||||
|
||||
if (hist_data->fields[i]->flags & HIST_FIELD_FL_HEX) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user