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Diffstat (limited to 'include/linux/trace_events.h')
-rw-r--r--include/linux/trace_events.h87
1 files changed, 49 insertions, 38 deletions
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index d68ff9b1247f..5caea596fef0 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -17,6 +17,9 @@ struct dentry;
struct bpf_prog;
union bpf_attr;
+/* Used for event string fields when they are NULL */
+#define EVENT_NULL_STR "(null)"
+
const char *trace_print_flags_seq(struct trace_seq *p, const char *delim,
unsigned long flags,
const struct trace_print_flags *flag_array);
@@ -103,13 +106,16 @@ struct trace_iterator {
unsigned int temp_size;
char *fmt; /* modified format holder */
unsigned int fmt_size;
- long wait_index;
+ atomic_t wait_index;
/* trace_seq for __print_flags() and __print_symbolic() etc. */
struct trace_seq tmp_seq;
cpumask_var_t started;
+ /* Set when the file is closed to prevent new waiters */
+ bool closed;
+
/* it's true when current open file is snapshot */
bool snapshot;
@@ -178,7 +184,7 @@ unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status);
enum trace_flag_type {
TRACE_FLAG_IRQS_OFF = 0x01,
- TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
+ TRACE_FLAG_NEED_RESCHED_LAZY = 0x02,
TRACE_FLAG_NEED_RESCHED = 0x04,
TRACE_FLAG_HARDIRQ = 0x08,
TRACE_FLAG_SOFTIRQ = 0x10,
@@ -187,7 +193,6 @@ enum trace_flag_type {
TRACE_FLAG_BH_OFF = 0x80,
};
-#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags)
{
unsigned int irq_status = irqs_disabled_flags(irqflags) ?
@@ -201,17 +206,6 @@ static inline unsigned int tracing_gen_ctx(void)
local_save_flags(irqflags);
return tracing_gen_ctx_flags(irqflags);
}
-#else
-
-static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags)
-{
- return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT);
-}
-static inline unsigned int tracing_gen_ctx(void)
-{
- return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT);
-}
-#endif
static inline unsigned int tracing_gen_ctx_dec(void)
{
@@ -279,7 +273,8 @@ struct trace_event_fields {
const char *name;
const int size;
const int align;
- const int is_signed;
+ const unsigned int is_signed:1;
+ unsigned int needs_test:1;
const int filter_type;
const int len;
};
@@ -320,7 +315,6 @@ void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer,
void trace_event_buffer_commit(struct trace_event_buffer *fbuffer);
enum {
- TRACE_EVENT_FL_FILTERED_BIT,
TRACE_EVENT_FL_CAP_ANY_BIT,
TRACE_EVENT_FL_NO_SET_FILTER_BIT,
TRACE_EVENT_FL_IGNORE_ENABLE_BIT,
@@ -331,11 +325,11 @@ enum {
TRACE_EVENT_FL_EPROBE_BIT,
TRACE_EVENT_FL_FPROBE_BIT,
TRACE_EVENT_FL_CUSTOM_BIT,
+ TRACE_EVENT_FL_TEST_STR_BIT,
};
/*
* Event flags:
- * FILTERED - The event has a filter attached
* CAP_ANY - Any user can enable for perf
* NO_SET_FILTER - Set when filter has error and is to be ignored
* IGNORE_ENABLE - For trace internal events, do not enable with debugfs file
@@ -348,9 +342,9 @@ enum {
* CUSTOM - Event is a custom event (to be attached to an exsiting tracepoint)
* This is set when the custom event has not been attached
* to a tracepoint yet, then it is cleared when it is.
+ * TEST_STR - The event has a "%s" that points to a string outside the event
*/
enum {
- TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT),
TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT),
TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT),
TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT),
@@ -361,6 +355,7 @@ enum {
TRACE_EVENT_FL_EPROBE = (1 << TRACE_EVENT_FL_EPROBE_BIT),
TRACE_EVENT_FL_FPROBE = (1 << TRACE_EVENT_FL_FPROBE_BIT),
TRACE_EVENT_FL_CUSTOM = (1 << TRACE_EVENT_FL_CUSTOM_BIT),
+ TRACE_EVENT_FL_TEST_STR = (1 << TRACE_EVENT_FL_TEST_STR_BIT),
};
#define TRACE_EVENT_FL_UKPROBE (TRACE_EVENT_FL_KPROBE | TRACE_EVENT_FL_UPROBE)
@@ -369,13 +364,12 @@ struct trace_event_call {
struct list_head list;
struct trace_event_class *class;
union {
- char *name;
+ const char *name;
/* Set TRACE_EVENT_FL_TRACEPOINT flag when using "tp" */
struct tracepoint *tp;
};
struct trace_event event;
char *print_fmt;
- struct event_filter *filter;
/*
* Static events can disappear with modules,
* where as dynamic ones need their own ref count.
@@ -674,11 +668,25 @@ struct trace_event_file {
* caching and such. Which is mostly OK ;-)
*/
unsigned long flags;
- atomic_t ref; /* ref count for opened files */
+ refcount_t ref; /* ref count for opened files */
atomic_t sm_ref; /* soft-mode reference counter */
atomic_t tm_ref; /* trigger-mode reference counter */
};
+#ifdef CONFIG_HIST_TRIGGERS
+extern struct irq_work hist_poll_work;
+extern wait_queue_head_t hist_poll_wq;
+
+static inline void hist_poll_wakeup(void)
+{
+ if (wq_has_sleeper(&hist_poll_wq))
+ irq_work_queue(&hist_poll_work);
+}
+
+#define hist_poll_wait(file, wait) \
+ poll_wait(file, &hist_poll_wq, wait)
+#endif
+
#define __TRACE_EVENT_FLAGS(name, value) \
static int __init trace_init_flags_##name(void) \
{ \
@@ -759,8 +767,11 @@ unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx);
int perf_event_attach_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);
void perf_event_detach_bpf_prog(struct perf_event *event);
int perf_event_query_prog_array(struct perf_event *event, void __user *info);
-int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *prog);
-int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *prog);
+
+struct bpf_raw_tp_link;
+int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link);
+int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link);
+
struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name);
void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp);
int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
@@ -788,11 +799,12 @@ perf_event_query_prog_array(struct perf_event *event, void __user *info)
{
return -EOPNOTSUPP;
}
-static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *p)
+struct bpf_raw_tp_link;
+static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link)
{
return -EOPNOTSUPP;
}
-static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *p)
+static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_raw_tp_link *link)
{
return -EOPNOTSUPP;
}
@@ -870,7 +882,6 @@ do { \
struct perf_event;
DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
-DECLARE_PER_CPU(int, bpf_kprobe_override);
extern int perf_trace_init(struct perf_event *event);
extern void perf_trace_destroy(struct perf_event *event);
@@ -903,31 +914,31 @@ void *perf_trace_buf_alloc(int size, struct pt_regs **regs, int *rctxp);
int perf_event_set_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie);
void perf_event_free_bpf_prog(struct perf_event *event);
-void bpf_trace_run1(struct bpf_prog *prog, u64 arg1);
-void bpf_trace_run2(struct bpf_prog *prog, u64 arg1, u64 arg2);
-void bpf_trace_run3(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run1(struct bpf_raw_tp_link *link, u64 arg1);
+void bpf_trace_run2(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2);
+void bpf_trace_run3(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3);
-void bpf_trace_run4(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run4(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4);
-void bpf_trace_run5(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run5(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5);
-void bpf_trace_run6(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run6(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6);
-void bpf_trace_run7(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run7(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7);
-void bpf_trace_run8(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run8(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
u64 arg8);
-void bpf_trace_run9(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run9(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
u64 arg8, u64 arg9);
-void bpf_trace_run10(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run10(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
u64 arg8, u64 arg9, u64 arg10);
-void bpf_trace_run11(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run11(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
u64 arg8, u64 arg9, u64 arg10, u64 arg11);
-void bpf_trace_run12(struct bpf_prog *prog, u64 arg1, u64 arg2,
+void bpf_trace_run12(struct bpf_raw_tp_link *link, u64 arg1, u64 arg2,
u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7,
u64 arg8, u64 arg9, u64 arg10, u64 arg11, u64 arg12);
void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx,
generated by cgit (git 2.34.1) at 2025-07-24 07:18:46 +0000