From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/include/linux/trace_events.h | 258 +++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 239 insertions(+), 19 deletions(-)
diff --git a/kernel/include/linux/trace_events.h b/kernel/include/linux/trace_events.h
index e26a85c..3b3c9de 100644
--- a/kernel/include/linux/trace_events.h
+++ b/kernel/include/linux/trace_events.h
@@ -11,7 +11,7 @@
#include <linux/tracepoint.h>
struct trace_array;
-struct trace_buffer;
+struct array_buffer;
struct tracer;
struct dentry;
struct bpf_prog;
@@ -45,6 +45,11 @@
const void *buf, int count,
size_t el_size);
+const char *
+trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str,
+ int prefix_type, int rowsize, int groupsize,
+ const void *buf, size_t len, bool ascii);
+
struct trace_iterator;
struct trace_event;
@@ -76,12 +81,14 @@
struct trace_iterator {
struct trace_array *tr;
struct tracer *trace;
- struct trace_buffer *trace_buffer;
+ struct array_buffer *array_buffer;
void *private;
int cpu_file;
struct mutex mutex;
struct ring_buffer_iter **buffer_iter;
unsigned long iter_flags;
+ void *temp; /* temp holder */
+ unsigned int temp_size;
/* trace_seq for __print_flags() and __print_symbolic() etc. */
struct trace_seq tmp_seq;
@@ -143,16 +150,78 @@
enum print_line_t trace_handle_return(struct trace_seq *s);
-void tracing_generic_entry_update(struct trace_entry *entry,
- unsigned long flags,
- int pc);
+static inline void tracing_generic_entry_update(struct trace_entry *entry,
+ unsigned short type,
+ unsigned int trace_ctx)
+{
+ entry->preempt_count = trace_ctx & 0xff;
+ entry->migrate_disable = (trace_ctx >> 8) & 0xff;
+ entry->preempt_lazy_count = (trace_ctx >> 16) & 0xff;
+ entry->pid = current->pid;
+ entry->type = type;
+ entry->flags = trace_ctx >> 24;
+}
+
+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 = 0x04,
+ TRACE_FLAG_HARDIRQ = 0x08,
+ TRACE_FLAG_SOFTIRQ = 0x10,
+ TRACE_FLAG_PREEMPT_RESCHED = 0x20,
+ TRACE_FLAG_NMI = 0x40,
+ TRACE_FLAG_NEED_RESCHED_LAZY = 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) ?
+ TRACE_FLAG_IRQS_OFF : 0;
+ return tracing_gen_ctx_irq_test(irq_status);
+}
+static inline unsigned int tracing_gen_ctx(void)
+{
+ unsigned long irqflags;
+
+ 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)
+{
+ unsigned int trace_ctx;
+
+ trace_ctx = tracing_gen_ctx();
+ /*
+ * Subtract one from the preeption counter if preemption is enabled,
+ * see trace_event_buffer_reserve()for details.
+ */
+ if (IS_ENABLED(CONFIG_PREEMPTION))
+ trace_ctx--;
+ return trace_ctx;
+}
+
struct trace_event_file;
struct ring_buffer_event *
-trace_event_buffer_lock_reserve(struct ring_buffer **current_buffer,
+trace_event_buffer_lock_reserve(struct trace_buffer **current_buffer,
struct trace_event_file *trace_file,
int type, unsigned long len,
- unsigned long flags, int pc);
+ unsigned int trace_ctx);
#define TRACE_RECORD_CMDLINE BIT(0)
#define TRACE_RECORD_TGID BIT(1)
@@ -188,6 +257,22 @@
struct trace_event_call;
+#define TRACE_FUNCTION_TYPE ((const char *)~0UL)
+
+struct trace_event_fields {
+ const char *type;
+ union {
+ struct {
+ const char *name;
+ const int size;
+ const int align;
+ const int is_signed;
+ const int filter_type;
+ };
+ int (*define_fields)(struct trace_event_call *);
+ };
+};
+
struct trace_event_class {
const char *system;
void *probe;
@@ -196,7 +281,7 @@
#endif
int (*reg)(struct trace_event_call *event,
enum trace_reg type, void *data);
- int (*define_fields)(struct trace_event_call *);
+ struct trace_event_fields *fields_array;
struct list_head *(*get_fields)(struct trace_event_call *);
struct list_head fields;
int (*raw_init)(struct trace_event_call *);
@@ -206,12 +291,12 @@
enum trace_reg type, void *data);
struct trace_event_buffer {
- struct ring_buffer *buffer;
+ struct trace_buffer *buffer;
struct ring_buffer_event *event;
struct trace_event_file *trace_file;
void *entry;
- unsigned long flags;
- int pc;
+ unsigned int trace_ctx;
+ struct pt_regs *regs;
};
void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer,
@@ -319,6 +404,14 @@
return call->name;
}
+static inline struct list_head *
+trace_get_fields(struct trace_event_call *event_call)
+{
+ if (!event_call->class->get_fields)
+ return &event_call->class->fields;
+ return event_call->class->get_fields(event_call);
+}
+
struct trace_array;
struct trace_subsystem_dir;
@@ -335,6 +428,128 @@
EVENT_FILE_FL_PID_FILTER_BIT,
EVENT_FILE_FL_WAS_ENABLED_BIT,
};
+
+extern struct trace_event_file *trace_get_event_file(const char *instance,
+ const char *system,
+ const char *event);
+extern void trace_put_event_file(struct trace_event_file *file);
+
+#define MAX_DYNEVENT_CMD_LEN (2048)
+
+enum dynevent_type {
+ DYNEVENT_TYPE_SYNTH = 1,
+ DYNEVENT_TYPE_KPROBE,
+ DYNEVENT_TYPE_NONE,
+};
+
+struct dynevent_cmd;
+
+typedef int (*dynevent_create_fn_t)(struct dynevent_cmd *cmd);
+
+struct dynevent_cmd {
+ struct seq_buf seq;
+ const char *event_name;
+ unsigned int n_fields;
+ enum dynevent_type type;
+ dynevent_create_fn_t run_command;
+ void *private_data;
+};
+
+extern int dynevent_create(struct dynevent_cmd *cmd);
+
+extern int synth_event_delete(const char *name);
+
+extern void synth_event_cmd_init(struct dynevent_cmd *cmd,
+ char *buf, int maxlen);
+
+extern int __synth_event_gen_cmd_start(struct dynevent_cmd *cmd,
+ const char *name,
+ struct module *mod, ...);
+
+#define synth_event_gen_cmd_start(cmd, name, mod, ...) \
+ __synth_event_gen_cmd_start(cmd, name, mod, ## __VA_ARGS__, NULL)
+
+struct synth_field_desc {
+ const char *type;
+ const char *name;
+};
+
+extern int synth_event_gen_cmd_array_start(struct dynevent_cmd *cmd,
+ const char *name,
+ struct module *mod,
+ struct synth_field_desc *fields,
+ unsigned int n_fields);
+extern int synth_event_create(const char *name,
+ struct synth_field_desc *fields,
+ unsigned int n_fields, struct module *mod);
+
+extern int synth_event_add_field(struct dynevent_cmd *cmd,
+ const char *type,
+ const char *name);
+extern int synth_event_add_field_str(struct dynevent_cmd *cmd,
+ const char *type_name);
+extern int synth_event_add_fields(struct dynevent_cmd *cmd,
+ struct synth_field_desc *fields,
+ unsigned int n_fields);
+
+#define synth_event_gen_cmd_end(cmd) \
+ dynevent_create(cmd)
+
+struct synth_event;
+
+struct synth_event_trace_state {
+ struct trace_event_buffer fbuffer;
+ struct synth_trace_event *entry;
+ struct trace_buffer *buffer;
+ struct synth_event *event;
+ unsigned int cur_field;
+ unsigned int n_u64;
+ bool disabled;
+ bool add_next;
+ bool add_name;
+};
+
+extern int synth_event_trace(struct trace_event_file *file,
+ unsigned int n_vals, ...);
+extern int synth_event_trace_array(struct trace_event_file *file, u64 *vals,
+ unsigned int n_vals);
+extern int synth_event_trace_start(struct trace_event_file *file,
+ struct synth_event_trace_state *trace_state);
+extern int synth_event_add_next_val(u64 val,
+ struct synth_event_trace_state *trace_state);
+extern int synth_event_add_val(const char *field_name, u64 val,
+ struct synth_event_trace_state *trace_state);
+extern int synth_event_trace_end(struct synth_event_trace_state *trace_state);
+
+extern int kprobe_event_delete(const char *name);
+
+extern void kprobe_event_cmd_init(struct dynevent_cmd *cmd,
+ char *buf, int maxlen);
+
+#define kprobe_event_gen_cmd_start(cmd, name, loc, ...) \
+ __kprobe_event_gen_cmd_start(cmd, false, name, loc, ## __VA_ARGS__, NULL)
+
+#define kretprobe_event_gen_cmd_start(cmd, name, loc, ...) \
+ __kprobe_event_gen_cmd_start(cmd, true, name, loc, ## __VA_ARGS__, NULL)
+
+extern int __kprobe_event_gen_cmd_start(struct dynevent_cmd *cmd,
+ bool kretprobe,
+ const char *name,
+ const char *loc, ...);
+
+#define kprobe_event_add_fields(cmd, ...) \
+ __kprobe_event_add_fields(cmd, ## __VA_ARGS__, NULL)
+
+#define kprobe_event_add_field(cmd, field) \
+ __kprobe_event_add_fields(cmd, field, NULL)
+
+extern int __kprobe_event_add_fields(struct dynevent_cmd *cmd, ...);
+
+#define kprobe_event_gen_cmd_end(cmd) \
+ dynevent_create(cmd)
+
+#define kretprobe_event_gen_cmd_end(cmd) \
+ dynevent_create(cmd)
/*
* Event file flags:
@@ -418,7 +633,7 @@
#define PERF_MAX_TRACE_SIZE 2048
-#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */
+#define MAX_FILTER_STR_VAL 256U /* Should handle KSYM_SYMBOL_LEN */
enum event_trigger_type {
ETT_NONE = (0),
@@ -473,7 +688,8 @@
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_event_map *bpf_find_raw_tracepoint(const char *name);
+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,
u32 *fd_type, const char **buf,
u64 *probe_offset, u64 *probe_addr);
@@ -504,9 +720,12 @@
{
return -EOPNOTSUPP;
}
-static inline struct bpf_raw_event_map *bpf_find_raw_tracepoint(const char *name)
+static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name)
{
return NULL;
+}
+static inline void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp)
+{
}
static inline int bpf_get_perf_event_info(const struct perf_event *event,
u32 *prog_id, u32 *fd_type,
@@ -531,16 +750,16 @@
extern int trace_define_field(struct trace_event_call *call, const char *type,
const char *name, int offset, int size,
int is_signed, int filter_type);
-extern int trace_add_event_call_nolock(struct trace_event_call *call);
-extern int trace_remove_event_call_nolock(struct trace_event_call *call);
extern int trace_add_event_call(struct trace_event_call *call);
extern int trace_remove_event_call(struct trace_event_call *call);
extern int trace_event_get_offsets(struct trace_event_call *call);
#define is_signed_type(type) (((type)(-1)) < (type)1)
+int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set);
int trace_set_clr_event(const char *system, const char *event, int set);
-
+int trace_array_set_clr_event(struct trace_array *tr, const char *system,
+ const char *event, bool enable);
/*
* The double __builtin_constant_p is because gcc will give us an error
* if we try to allocate the static variable to fmt if it is not a
@@ -552,7 +771,7 @@
tracing_record_cmdline(current); \
if (__builtin_constant_p(fmt)) { \
static const char *trace_printk_fmt \
- __attribute__((section("__trace_printk_fmt"))) = \
+ __section("__trace_printk_fmt") = \
__builtin_constant_p(fmt) ? fmt : NULL; \
\
__trace_bprintk(ip, trace_printk_fmt, ##args); \
@@ -579,7 +798,8 @@
bool perf_type_tracepoint);
#endif
#ifdef CONFIG_UPROBE_EVENTS
-extern int perf_uprobe_init(struct perf_event *event, bool is_retprobe);
+extern int perf_uprobe_init(struct perf_event *event,
+ unsigned long ref_ctr_offset, bool is_retprobe);
extern void perf_uprobe_destroy(struct perf_event *event);
extern int bpf_get_uprobe_info(const struct perf_event *event,
u32 *fd_type, const char **filename,
--
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