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-rw-r--r--kernel/trace/blktrace.c10
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace_branch.c2
-rw-r--r--kernel/trace/trace_events.c45
-rw-r--r--kernel/trace/trace_events_stage_1.h8
-rw-r--r--kernel/trace/trace_events_stage_2.h13
-rw-r--r--kernel/trace/trace_events_stage_3.h98
-rw-r--r--kernel/trace/trace_export.c2
-rw-r--r--kernel/trace/trace_functions_graph.c6
-rw-r--r--kernel/trace/trace_output.c14
-rw-r--r--kernel/trace/trace_workqueue.c6
11 files changed, 116 insertions, 90 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index d24a10b8411a..1f32e4edf490 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -33,7 +33,7 @@ static struct trace_array *blk_tr;
static int __read_mostly blk_tracer_enabled;
/* Select an alternative, minimalistic output than the original one */
-#define TRACE_BLK_OPT_CLASSIC 0x1
+#define TRACE_BLK_OPT_CLASSIC 0x1
static struct tracer_opt blk_tracer_opts[] = {
/* Default disable the minimalistic output */
@@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(blk_trace_startstop);
/**
* blk_trace_ioctl: - handle the ioctls associated with tracing
* @bdev: the block device
- * @cmd: the ioctl cmd
+ * @cmd: the ioctl cmd
* @arg: the argument data, if any
*
**/
@@ -1128,9 +1128,9 @@ static void blk_tracer_reset(struct trace_array *tr)
static struct {
const char *act[2];
- int (*print)(struct trace_seq *s, const struct trace_entry *ent);
+ int (*print)(struct trace_seq *s, const struct trace_entry *ent);
} what2act[] __read_mostly = {
- [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic },
+ [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic },
[__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic },
[__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic },
[__BLK_TA_GETRQ] = {{ "G", "getrq" }, blk_log_generic },
@@ -1229,7 +1229,7 @@ static struct tracer blk_tracer __read_mostly = {
};
static struct trace_event trace_blk_event = {
- .type = TRACE_BLK,
+ .type = TRACE_BLK,
.trace = blk_trace_event_print,
.binary = blk_trace_event_print_binary,
};
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index e5b56199e5e0..a941d257b619 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -799,7 +799,7 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags,
entry->preempt_count = pc & 0xff;
entry->pid = (tsk) ? tsk->pid : 0;
- entry->tgid = (tsk) ? tsk->tgid : 0;
+ entry->tgid = (tsk) ? tsk->tgid : 0;
entry->flags =
#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
(irqs_disabled_flags(flags) ? TRACE_FLAG_IRQS_OFF : 0) |
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index aaa0755268b9..ad8c22efff41 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -157,7 +157,7 @@ static enum print_line_t trace_branch_print(struct trace_iterator *iter,
static struct trace_event trace_branch_event = {
- .type = TRACE_BRANCH,
+ .type = TRACE_BRANCH,
.trace = trace_branch_print,
};
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 1880a6438097..769dfd00fc85 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -102,7 +102,7 @@ static int ftrace_set_clr_event(char *buf, int set)
mutex_lock(&event_mutex);
events_for_each(call) {
- if (!call->name)
+ if (!call->name || !call->regfunc)
continue;
if (match &&
@@ -207,8 +207,20 @@ t_next(struct seq_file *m, void *v, loff_t *pos)
(*pos)++;
- if ((unsigned long)call >= (unsigned long)__stop_ftrace_events)
- return NULL;
+ for (;;) {
+ if ((unsigned long)call >= (unsigned long)__stop_ftrace_events)
+ return NULL;
+
+ /*
+ * The ftrace subsystem is for showing formats only.
+ * They can not be enabled or disabled via the event files.
+ */
+ if (call->regfunc)
+ break;
+
+ call++;
+ next = call;
+ }
m->private = ++next;
@@ -338,8 +350,7 @@ event_enable_write(struct file *filp, const char __user *ubuf, size_t cnt,
#undef FIELD
#define FIELD(type, name) \
- #type, #name, (unsigned int)offsetof(typeof(field), name), \
- (unsigned int)sizeof(field.name)
+ #type, #name, offsetof(typeof(field), name), sizeof(field.name)
static int trace_write_header(struct trace_seq *s)
{
@@ -347,11 +358,11 @@ static int trace_write_header(struct trace_seq *s)
/* struct trace_entry */
return trace_seq_printf(s,
- "\tfield:%s %s;\toffset:%u;\tsize:%u;\n"
- "\tfield:%s %s;\toffset:%u;\tsize:%u;\n"
- "\tfield:%s %s;\toffset:%u;\tsize:%u;\n"
- "\tfield:%s %s;\toffset:%u;\tsize:%u;\n"
- "\tfield:%s %s;\toffset:%u;\tsize:%u;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
+ "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
"\n",
FIELD(unsigned char, type),
FIELD(unsigned char, flags),
@@ -417,6 +428,13 @@ static const struct seq_operations show_set_event_seq_ops = {
.stop = t_stop,
};
+static const struct file_operations ftrace_avail_fops = {
+ .open = ftrace_event_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static const struct file_operations ftrace_set_event_fops = {
.open = ftrace_event_seq_open,
.read = seq_read,
@@ -558,6 +576,13 @@ static __init int event_trace_init(void)
if (!d_tracer)
return 0;
+ entry = debugfs_create_file("available_events", 0444, d_tracer,
+ (void *)&show_event_seq_ops,
+ &ftrace_avail_fops);
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'available_events' entry\n");
+
entry = debugfs_create_file("set_event", 0644, d_tracer,
(void *)&show_set_event_seq_ops,
&ftrace_set_event_fops);
diff --git a/kernel/trace/trace_events_stage_1.h b/kernel/trace/trace_events_stage_1.h
index 15e9bf965a18..38985f9b379c 100644
--- a/kernel/trace/trace_events_stage_1.h
+++ b/kernel/trace/trace_events_stage_1.h
@@ -6,11 +6,13 @@
* struct ftrace_raw_<call> {
* struct trace_entry ent;
* <type> <item>;
+ * <type2> <item2>[<len>];
* [...]
* };
*
- * The <type> <item> is created by the TRACE_FIELD(type, item, assign)
- * macro. We simply do "type item;", and that will create the fields
+ * The <type> <item> is created by the __field(type, item) macro or
+ * the __array(type2, item2, len) macro.
+ * We simply do "type item;", and that will create the fields
* in the structure.
*/
@@ -27,7 +29,7 @@
#define TP_STRUCT__entry(args...) args
#undef TRACE_EVENT
-#define TRACE_EVENT(name, proto, args, tstruct, print, assign) \
+#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
struct ftrace_raw_##name { \
struct trace_entry ent; \
tstruct \
diff --git a/kernel/trace/trace_events_stage_2.h b/kernel/trace/trace_events_stage_2.h
index d91bf4c56661..ca347afd6aa0 100644
--- a/kernel/trace/trace_events_stage_2.h
+++ b/kernel/trace/trace_events_stage_2.h
@@ -20,7 +20,7 @@
*
* field = (typeof(field))entry;
*
- * ret = trace_seq_printf(s, <TP_RAW_FMT> "%s", <ARGS> "\n");
+ * ret = trace_seq_printf(s, <TP_printk> "\n");
* if (!ret)
* return TRACE_TYPE_PARTIAL_LINE;
*
@@ -39,7 +39,7 @@
#define TP_printk(fmt, args...) fmt "\n", args
#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, print, assign) \
+#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
enum print_line_t \
ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
{ \
@@ -76,10 +76,9 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
* int ret;
*
* ret = trace_seq_printf(s, #type " " #item ";"
- * " size:%d; offset:%d;\n",
- * sizeof(field.type),
- * offsetof(struct ftrace_raw_##call,
- * item));
+ * " offset:%u; size:%u;\n",
+ * offsetof(struct ftrace_raw_##call, item),
+ * sizeof(field.type));
*
* }
*/
@@ -115,7 +114,7 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#define TP_fast_assign(args...) args
#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, print, func) \
+#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
static int \
ftrace_format_##call(struct trace_seq *s) \
{ \
diff --git a/kernel/trace/trace_events_stage_3.h b/kernel/trace/trace_events_stage_3.h
index 3ba55d4ab073..ae2e323df0c7 100644
--- a/kernel/trace/trace_events_stage_3.h
+++ b/kernel/trace/trace_events_stage_3.h
@@ -5,23 +5,23 @@
*
* static void ftrace_event_<call>(proto)
* {
- * event_trace_printk(_RET_IP_, "<call>: " <fmt>);
+ * event_trace_printk(_RET_IP_, "<call>: " <fmt>);
* }
*
* static int ftrace_reg_event_<call>(void)
* {
- * int ret;
+ * int ret;
*
- * ret = register_trace_<call>(ftrace_event_<call>);
- * if (!ret)
- * pr_info("event trace: Could not activate trace point "
- * "probe to <call>");
- * return ret;
+ * ret = register_trace_<call>(ftrace_event_<call>);
+ * if (!ret)
+ * pr_info("event trace: Could not activate trace point "
+ * "probe to <call>");
+ * return ret;
* }
*
* static void ftrace_unreg_event_<call>(void)
* {
- * unregister_trace_<call>(ftrace_event_<call>);
+ * unregister_trace_<call>(ftrace_event_<call>);
* }
*
* For those macros defined with TRACE_FORMAT:
@@ -29,9 +29,9 @@
* static struct ftrace_event_call __used
* __attribute__((__aligned__(4)))
* __attribute__((section("_ftrace_events"))) event_<call> = {
- * .name = "<call>",
- * .regfunc = ftrace_reg_event_<call>,
- * .unregfunc = ftrace_unreg_event_<call>,
+ * .name = "<call>",
+ * .regfunc = ftrace_reg_event_<call>,
+ * .unregfunc = ftrace_unreg_event_<call>,
* }
*
*
@@ -41,66 +41,66 @@
*
* static void ftrace_raw_event_<call>(proto)
* {
- * struct ring_buffer_event *event;
- * struct ftrace_raw_<call> *entry; <-- defined in stage 1
- * unsigned long irq_flags;
- * int pc;
+ * struct ring_buffer_event *event;
+ * struct ftrace_raw_<call> *entry; <-- defined in stage 1
+ * unsigned long irq_flags;
+ * int pc;
*
- * local_save_flags(irq_flags);
- * pc = preempt_count();
+ * local_save_flags(irq_flags);
+ * pc = preempt_count();
*
- * event = trace_current_buffer_lock_reserve(event_<call>.id,
- * sizeof(struct ftrace_raw_<call>),
- * irq_flags, pc);
- * if (!event)
- * return;
- * entry = ring_buffer_event_data(event);
+ * event = trace_current_buffer_lock_reserve(event_<call>.id,
+ * sizeof(struct ftrace_raw_<call>),
+ * irq_flags, pc);
+ * if (!event)
+ * return;
+ * entry = ring_buffer_event_data(event);
*
- * <tstruct>; <-- Here we assign the entries by the TRACE_FIELD.
+ * <assign>; <-- Here we assign the entries by the __field and
+ * __array macros.
*
- * trace_current_buffer_unlock_commit(event, irq_flags, pc);
+ * trace_current_buffer_unlock_commit(event, irq_flags, pc);
* }
*
* static int ftrace_raw_reg_event_<call>(void)
* {
- * int ret;
+ * int ret;
*
- * ret = register_trace_<call>(ftrace_raw_event_<call>);
- * if (!ret)
- * pr_info("event trace: Could not activate trace point "
- * "probe to <call>");
- * return ret;
+ * ret = register_trace_<call>(ftrace_raw_event_<call>);
+ * if (!ret)
+ * pr_info("event trace: Could not activate trace point "
+ * "probe to <call>");
+ * return ret;
* }
*
* static void ftrace_unreg_event_<call>(void)
* {
- * unregister_trace_<call>(ftrace_raw_event_<call>);
+ * unregister_trace_<call>(ftrace_raw_event_<call>);
* }
*
* static struct trace_event ftrace_event_type_<call> = {
- * .trace = ftrace_raw_output_<call>, <-- stage 2
+ * .trace = ftrace_raw_output_<call>, <-- stage 2
* };
*
* static int ftrace_raw_init_event_<call>(void)
* {
- * int id;
+ * int id;
*
- * id = register_ftrace_event(&ftrace_event_type_<call>);
- * if (!id)
- * return -ENODEV;
- * event_<call>.id = id;
- * return 0;
+ * id = register_ftrace_event(&ftrace_event_type_<call>);
+ * if (!id)
+ * return -ENODEV;
+ * event_<call>.id = id;
+ * return 0;
* }
*
* static struct ftrace_event_call __used
* __attribute__((__aligned__(4)))
* __attribute__((section("_ftrace_events"))) event_<call> = {
- * .name = "<call>",
- * .regfunc = ftrace_reg_event_<call>,
- * .unregfunc = ftrace_unreg_event_<call>,
- * .raw_init = ftrace_raw_init_event_<call>,
- * .raw_reg = ftrace_raw_reg_event_<call>,
- * .raw_unreg = ftrace_raw_unreg_event_<call>,
+ * .name = "<call>",
+ * .system = "<system>",
+ * .raw_init = ftrace_raw_init_event_<call>,
+ * .regfunc = ftrace_reg_event_<call>,
+ * .unregfunc = ftrace_unreg_event_<call>,
* .show_format = ftrace_format_<call>,
* }
*
@@ -138,7 +138,7 @@ _TRACE_FORMAT(call, PARAMS(proto), PARAMS(args), PARAMS(fmt)) \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
+ .name = #call, \
.system = __stringify(TRACE_SYSTEM), \
.regfunc = ftrace_reg_event_##call, \
.unregfunc = ftrace_unreg_event_##call, \
@@ -148,7 +148,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#define __entry entry
#undef TRACE_EVENT
-#define TRACE_EVENT(call, proto, args, tstruct, print, assign) \
+#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
\
static struct ftrace_event_call event_##call; \
\
@@ -163,7 +163,7 @@ static void ftrace_raw_event_##call(proto) \
pc = preempt_count(); \
\
event = trace_current_buffer_lock_reserve(event_##call.id, \
- sizeof(struct ftrace_raw_##call), \
+ sizeof(struct ftrace_raw_##call), \
irq_flags, pc); \
if (!event) \
return; \
@@ -208,7 +208,7 @@ static int ftrace_raw_init_event_##call(void) \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
+ .name = #call, \
.system = __stringify(TRACE_SYSTEM), \
.raw_init = ftrace_raw_init_event_##call, \
.regfunc = ftrace_raw_reg_event_##call, \
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 23ae78430d58..4d9952d3df50 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -94,7 +94,7 @@ ftrace_format_##call(struct trace_seq *s) \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
- .name = #call, \
+ .name = #call, \
.id = proto, \
.system = __stringify(TRACE_SYSTEM), \
.show_format = ftrace_format_##call, \
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 35257be6a9d6..8566c14b3e9a 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -841,12 +841,12 @@ static void graph_trace_close(struct trace_iterator *iter)
}
static struct tracer graph_trace __read_mostly = {
- .name = "function_graph",
+ .name = "function_graph",
.open = graph_trace_open,
.close = graph_trace_close,
.wait_pipe = poll_wait_pipe,
- .init = graph_trace_init,
- .reset = graph_trace_reset,
+ .init = graph_trace_init,
+ .reset = graph_trace_reset,
.print_line = print_graph_function,
.print_header = print_graph_headers,
.flags = &tracer_flags,
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ef8fd661b217..491832af9ba1 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -565,7 +565,7 @@ static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags)
}
static struct trace_event trace_fn_event = {
- .type = TRACE_FN,
+ .type = TRACE_FN,
.trace = trace_fn_trace,
.raw = trace_fn_raw,
.hex = trace_fn_hex,
@@ -696,7 +696,7 @@ static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter,
}
static struct trace_event trace_ctx_event = {
- .type = TRACE_CTX,
+ .type = TRACE_CTX,
.trace = trace_ctx_print,
.raw = trace_ctx_raw,
.hex = trace_ctx_hex,
@@ -704,7 +704,7 @@ static struct trace_event trace_ctx_event = {
};
static struct trace_event trace_wake_event = {
- .type = TRACE_WAKE,
+ .type = TRACE_WAKE,
.trace = trace_wake_print,
.raw = trace_wake_raw,
.hex = trace_wake_hex,
@@ -759,7 +759,7 @@ static enum print_line_t trace_special_bin(struct trace_iterator *iter,
}
static struct trace_event trace_special_event = {
- .type = TRACE_SPECIAL,
+ .type = TRACE_SPECIAL,
.trace = trace_special_print,
.raw = trace_special_print,
.hex = trace_special_hex,
@@ -796,7 +796,7 @@ static enum print_line_t trace_stack_print(struct trace_iterator *iter,
}
static struct trace_event trace_stack_event = {
- .type = TRACE_STACK,
+ .type = TRACE_STACK,
.trace = trace_stack_print,
.raw = trace_special_print,
.hex = trace_special_hex,
@@ -825,7 +825,7 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
}
static struct trace_event trace_user_stack_event = {
- .type = TRACE_USER_STACK,
+ .type = TRACE_USER_STACK,
.trace = trace_user_stack_print,
.raw = trace_special_print,
.hex = trace_special_hex,
@@ -879,7 +879,7 @@ static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags)
static struct trace_event trace_print_event = {
- .type = TRACE_PRINT,
+ .type = TRACE_PRINT,
.trace = trace_print_print,
.raw = trace_print_raw,
};
diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 739fdacf873b..fb5ccac8bbc0 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -19,14 +19,14 @@ struct cpu_workqueue_stats {
/* Useful to know if we print the cpu headers */
bool first_entry;
int cpu;
- pid_t pid;
+ pid_t pid;
/* Can be inserted from interrupt or user context, need to be atomic */
- atomic_t inserted;
+ atomic_t inserted;
/*
* Don't need to be atomic, works are serialized in a single workqueue thread
* on a single CPU.
*/
- unsigned int executed;
+ unsigned int executed;
};
/* List of workqueue threads on one cpu */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-12 13:41:16 +0200