aboutsummaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/Makefile1
-rw-r--r--kernel/trace/ftrace.c10
-rw-r--r--kernel/trace/ring_buffer.c2
-rw-r--r--kernel/trace/trace.c24
-rw-r--r--kernel/trace/trace_event_types.h165
-rw-r--r--kernel/trace/trace_events.c12
-rw-r--r--kernel/trace/trace_events_stage_2.h53
-rw-r--r--kernel/trace/trace_export.c81
-rw-r--r--kernel/trace/trace_format.h55
-rw-r--r--kernel/trace/trace_sysprof.c2
10 files changed, 329 insertions, 76 deletions
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index c931fe0560c..f44736c7574 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -41,5 +41,6 @@ obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
obj-$(CONFIG_EVENT_TRACER) += trace_events.o
obj-$(CONFIG_EVENT_TRACER) += events.o
+obj-$(CONFIG_EVENT_TRACER) += trace_export.o
libftrace-y := ftrace.o
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5a3a06b21ee..d7a06a0d944 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1869,21 +1869,21 @@ ftrace_notrace_release(struct inode *inode, struct file *file)
return ftrace_regex_release(inode, file, 0);
}
-static struct file_operations ftrace_avail_fops = {
+static const struct file_operations ftrace_avail_fops = {
.open = ftrace_avail_open,
.read = seq_read,
.llseek = seq_lseek,
.release = ftrace_avail_release,
};
-static struct file_operations ftrace_failures_fops = {
+static const struct file_operations ftrace_failures_fops = {
.open = ftrace_failures_open,
.read = seq_read,
.llseek = seq_lseek,
.release = ftrace_avail_release,
};
-static struct file_operations ftrace_filter_fops = {
+static const struct file_operations ftrace_filter_fops = {
.open = ftrace_filter_open,
.read = ftrace_regex_read,
.write = ftrace_filter_write,
@@ -1891,7 +1891,7 @@ static struct file_operations ftrace_filter_fops = {
.release = ftrace_filter_release,
};
-static struct file_operations ftrace_notrace_fops = {
+static const struct file_operations ftrace_notrace_fops = {
.open = ftrace_notrace_open,
.read = ftrace_regex_read,
.write = ftrace_notrace_write,
@@ -2423,7 +2423,7 @@ ftrace_pid_write(struct file *filp, const char __user *ubuf,
return cnt;
}
-static struct file_operations ftrace_pid_fops = {
+static const struct file_operations ftrace_pid_fops = {
.read = ftrace_pid_read,
.write = ftrace_pid_write,
};
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index f7473645b9c..178858492a8 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2606,7 +2606,7 @@ rb_simple_write(struct file *filp, const char __user *ubuf,
return cnt;
}
-static struct file_operations rb_simple_fops = {
+static const struct file_operations rb_simple_fops = {
.open = tracing_open_generic,
.read = rb_simple_read,
.write = rb_simple_write,
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c0e9c126339..e6144acf2b7 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1882,14 +1882,14 @@ static int show_traces_open(struct inode *inode, struct file *file)
return ret;
}
-static struct file_operations tracing_fops = {
+static const struct file_operations tracing_fops = {
.open = tracing_open,
.read = seq_read,
.llseek = seq_lseek,
.release = tracing_release,
};
-static struct file_operations show_traces_fops = {
+static const struct file_operations show_traces_fops = {
.open = show_traces_open,
.read = seq_read,
.release = seq_release,
@@ -1982,7 +1982,7 @@ err_unlock:
return err;
}
-static struct file_operations tracing_cpumask_fops = {
+static const struct file_operations tracing_cpumask_fops = {
.open = tracing_open_generic,
.read = tracing_cpumask_read,
.write = tracing_cpumask_write,
@@ -2134,7 +2134,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
return cnt;
}
-static struct file_operations tracing_iter_fops = {
+static const struct file_operations tracing_iter_fops = {
.open = tracing_open_generic,
.read = tracing_trace_options_read,
.write = tracing_trace_options_write,
@@ -2167,7 +2167,7 @@ tracing_readme_read(struct file *filp, char __user *ubuf,
readme_msg, strlen(readme_msg));
}
-static struct file_operations tracing_readme_fops = {
+static const struct file_operations tracing_readme_fops = {
.open = tracing_open_generic,
.read = tracing_readme_read,
};
@@ -2927,25 +2927,25 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
return cnt;
}
-static struct file_operations tracing_max_lat_fops = {
+static const struct file_operations tracing_max_lat_fops = {
.open = tracing_open_generic,
.read = tracing_max_lat_read,
.write = tracing_max_lat_write,
};
-static struct file_operations tracing_ctrl_fops = {
+static const struct file_operations tracing_ctrl_fops = {
.open = tracing_open_generic,
.read = tracing_ctrl_read,
.write = tracing_ctrl_write,
};
-static struct file_operations set_tracer_fops = {
+static const struct file_operations set_tracer_fops = {
.open = tracing_open_generic,
.read = tracing_set_trace_read,
.write = tracing_set_trace_write,
};
-static struct file_operations tracing_pipe_fops = {
+static const struct file_operations tracing_pipe_fops = {
.open = tracing_open_pipe,
.poll = tracing_poll_pipe,
.read = tracing_read_pipe,
@@ -2953,13 +2953,13 @@ static struct file_operations tracing_pipe_fops = {
.release = tracing_release_pipe,
};
-static struct file_operations tracing_entries_fops = {
+static const struct file_operations tracing_entries_fops = {
.open = tracing_open_generic,
.read = tracing_entries_read,
.write = tracing_entries_write,
};
-static struct file_operations tracing_mark_fops = {
+static const struct file_operations tracing_mark_fops = {
.open = tracing_open_generic,
.write = tracing_mark_write,
};
@@ -3240,7 +3240,7 @@ tracing_read_dyn_info(struct file *filp, char __user *ubuf,
return r;
}
-static struct file_operations tracing_dyn_info_fops = {
+static const struct file_operations tracing_dyn_info_fops = {
.open = tracing_open_generic,
.read = tracing_read_dyn_info,
};
diff --git a/kernel/trace/trace_event_types.h b/kernel/trace/trace_event_types.h
new file mode 100644
index 00000000000..fb4eba16643
--- /dev/null
+++ b/kernel/trace/trace_event_types.h
@@ -0,0 +1,165 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM ftrace
+
+/*
+ * We cheat and use the proto type field as the ID
+ * and args as the entry type (minus 'struct')
+ */
+TRACE_EVENT_FORMAT(function, TRACE_FN, ftrace_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, ip, ip)
+ TRACE_FIELD(unsigned long, parent_ip, parent_ip)
+ ),
+ TPRAWFMT(" %lx <-- %lx")
+);
+
+TRACE_EVENT_FORMAT(funcgraph_entry, TRACE_GRAPH_ENT,
+ ftrace_graph_ent_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, graph_ent.func, func)
+ TRACE_FIELD(int, graph_ent.depth, depth)
+ ),
+ TPRAWFMT("--> %lx (%d)")
+);
+
+TRACE_EVENT_FORMAT(funcgraph_exit, TRACE_GRAPH_RET,
+ ftrace_graph_ret_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, ret.func, func)
+ TRACE_FIELD(int, ret.depth, depth)
+ ),
+ TPRAWFMT("<-- %lx (%d)")
+);
+
+TRACE_EVENT_FORMAT(wakeup, TRACE_WAKE, ctx_switch_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned int, prev_pid, prev_pid)
+ TRACE_FIELD(unsigned char, prev_prio, prev_prio)
+ TRACE_FIELD(unsigned char, prev_state, prev_state)
+ TRACE_FIELD(unsigned int, next_pid, next_pid)
+ TRACE_FIELD(unsigned char, next_prio, next_prio)
+ TRACE_FIELD(unsigned char, next_state, next_state)
+ TRACE_FIELD(unsigned int, next_cpu, next_cpu)
+ ),
+ TPRAWFMT("%u:%u:%u ==+ %u:%u:%u [%03u]")
+);
+
+TRACE_EVENT_FORMAT(context_switch, TRACE_CTX, ctx_switch_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned int, prev_pid, prev_pid)
+ TRACE_FIELD(unsigned char, prev_prio, prev_prio)
+ TRACE_FIELD(unsigned char, prev_state, prev_state)
+ TRACE_FIELD(unsigned int, next_pid, next_pid)
+ TRACE_FIELD(unsigned char, next_prio, next_prio)
+ TRACE_FIELD(unsigned char, next_state, next_state)
+ TRACE_FIELD(unsigned int, next_cpu, next_cpu)
+ ),
+ TPRAWFMT("%u:%u:%u ==+ %u:%u:%u [%03u]")
+);
+
+TRACE_EVENT_FORMAT(special, TRACE_SPECIAL, special_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, arg1, arg1)
+ TRACE_FIELD(unsigned long, arg2, arg2)
+ TRACE_FIELD(unsigned long, arg3, arg3)
+ ),
+ TPRAWFMT("(%08lx) (%08lx) (%08lx)")
+);
+
+/*
+ * Stack-trace entry:
+ */
+
+/* #define FTRACE_STACK_ENTRIES 8 */
+
+TRACE_EVENT_FORMAT(kernel_stack, TRACE_STACK, stack_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, caller[0], stack0)
+ TRACE_FIELD(unsigned long, caller[1], stack1)
+ TRACE_FIELD(unsigned long, caller[2], stack2)
+ TRACE_FIELD(unsigned long, caller[3], stack3)
+ TRACE_FIELD(unsigned long, caller[4], stack4)
+ TRACE_FIELD(unsigned long, caller[5], stack5)
+ TRACE_FIELD(unsigned long, caller[6], stack6)
+ TRACE_FIELD(unsigned long, caller[7], stack7)
+ ),
+ TPRAWFMT("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
+ "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n")
+);
+
+TRACE_EVENT_FORMAT(user_stack, TRACE_USER_STACK, userstack_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, caller[0], stack0)
+ TRACE_FIELD(unsigned long, caller[1], stack1)
+ TRACE_FIELD(unsigned long, caller[2], stack2)
+ TRACE_FIELD(unsigned long, caller[3], stack3)
+ TRACE_FIELD(unsigned long, caller[4], stack4)
+ TRACE_FIELD(unsigned long, caller[5], stack5)
+ TRACE_FIELD(unsigned long, caller[6], stack6)
+ TRACE_FIELD(unsigned long, caller[7], stack7)
+ ),
+ TPRAWFMT("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
+ "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n")
+);
+
+TRACE_EVENT_FORMAT(print, TRACE_PRINT, print_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned long, ip, ip)
+ TRACE_FIELD(unsigned int, depth, depth)
+ TRACE_FIELD_ZERO_CHAR(buf)
+ ),
+ TPRAWFMT("%08lx (%d) %s")
+);
+
+TRACE_EVENT_FORMAT(branch, TRACE_BRANCH, trace_branch, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(unsigned int, line, line)
+ TRACE_FIELD_SPECIAL(char func[TRACE_FUNC_SIZE+1], func, func)
+ TRACE_FIELD_SPECIAL(char file[TRACE_FUNC_SIZE+1], file, file)
+ TRACE_FIELD(char, correct, correct)
+ ),
+ TPRAWFMT("%u:%s:%s (%u)")
+);
+
+TRACE_EVENT_FORMAT(hw_branch, TRACE_HW_BRANCHES, hw_branch_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(u64, from, from)
+ TRACE_FIELD(u64, to, to)
+ ),
+ TPRAWFMT("from: %llx to: %llx")
+);
+
+TRACE_EVENT_FORMAT(power, TRACE_POWER, trace_power, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(ktime_t, state_data.stamp, stamp)
+ TRACE_FIELD(ktime_t, state_data.end, end)
+ TRACE_FIELD(int, state_data.type, type)
+ TRACE_FIELD(int, state_data.state, state)
+ ),
+ TPRAWFMT("%llx->%llx type:%u state:%u")
+);
+
+TRACE_EVENT_FORMAT(kmem_alloc, TRACE_KMEM_ALLOC, kmemtrace_alloc_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(enum kmemtrace_type_id, type_id, type_id)
+ TRACE_FIELD(unsigned long, call_site, call_site)
+ TRACE_FIELD(const void *, ptr, ptr)
+ TRACE_FIELD(size_t, bytes_req, bytes_req)
+ TRACE_FIELD(size_t, bytes_alloc, bytes_alloc)
+ TRACE_FIELD(gfp_t, gfp_flags, gfp_flags)
+ TRACE_FIELD(int, node, node)
+ ),
+ TPRAWFMT("type:%u call_site:%lx ptr:%p req:%lu alloc:%lu"
+ " flags:%x node:%d")
+);
+
+TRACE_EVENT_FORMAT(kmem_free, TRACE_KMEM_FREE, kmemtrace_free_entry, ignore,
+ TRACE_STRUCT(
+ TRACE_FIELD(enum kmemtrace_type_id, type_id, type_id)
+ TRACE_FIELD(unsigned long, call_site, call_site)
+ TRACE_FIELD(const void *, ptr, ptr)
+ ),
+ TPRAWFMT("type:%u call_site:%lx ptr:%p")
+);
+
+#undef TRACE_SYSTEM
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 210e71ff82d..4488d90e75e 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -656,11 +656,13 @@ event_create_dir(struct ftrace_event_call *call, struct dentry *d_events)
return -1;
}
- entry = debugfs_create_file("enable", 0644, call->dir, call,
- &ftrace_enable_fops);
- if (!entry)
- pr_warning("Could not create debugfs "
- "'%s/enable' entry\n", call->name);
+ if (call->regfunc) {
+ entry = debugfs_create_file("enable", 0644, call->dir, call,
+ &ftrace_enable_fops);
+ if (!entry)
+ pr_warning("Could not create debugfs "
+ "'%s/enable' entry\n", call->name);
+ }
/* Only let type be writable, if we can change it */
entry = debugfs_create_file("type",
diff --git a/kernel/trace/trace_events_stage_2.h b/kernel/trace/trace_events_stage_2.h
index b1cebba1d9b..d24a97e74ae 100644
--- a/kernel/trace/trace_events_stage_2.h
+++ b/kernel/trace/trace_events_stage_2.h
@@ -75,56 +75,5 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#include <trace/trace_event_types.h>
-/*
- * Setup the showing format of trace point.
- *
- * int
- * ftrace_format_##call(struct trace_seq *s)
- * {
- * struct ftrace_raw_##call field;
- * int ret;
- *
- * ret = trace_seq_printf(s, #type " " #item ";"
- * " size:%d; offset:%d;\n",
- * sizeof(field.type),
- * offsetof(struct ftrace_raw_##call,
- * item));
- *
- * }
- */
-
-#undef TRACE_FIELD
-#define TRACE_FIELD(type, item, assign) \
- ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%lu;\tsize:%lu;\n", \
- offsetof(typeof(field), item), \
- sizeof(field.item)); \
- if (!ret) \
- return 0;
-
-
-#undef TRACE_FIELD_SPECIAL
-#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
- ret = trace_seq_printf(s, "\tfield special:" #type_item ";\t" \
- "offset:%lu;\tsize:%lu;\n", \
- offsetof(typeof(field), item), \
- sizeof(field.item)); \
- if (!ret) \
- return 0;
-
-#undef TRACE_EVENT_FORMAT
-#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
-int \
-ftrace_format_##call(struct trace_seq *s) \
-{ \
- struct ftrace_raw_##call field; \
- int ret; \
- \
- tstruct; \
- \
- trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
- \
- return ret; \
-}
-
+#include "trace_format.h"
#include <trace/trace_event_types.h>
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
new file mode 100644
index 00000000000..0fb7be73e31
--- /dev/null
+++ b/kernel/trace/trace_export.c
@@ -0,0 +1,81 @@
+/*
+ * trace_export.c - export basic ftrace utilities to user space
+ *
+ * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
+ */
+#include <linux/stringify.h>
+#include <linux/kallsyms.h>
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+#include <linux/ftrace.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+
+#include "trace_output.h"
+
+#include "trace_format.h"
+
+#undef TRACE_FIELD_ZERO_CHAR
+#define TRACE_FIELD_ZERO_CHAR(item) \
+ ret = trace_seq_printf(s, "\tfield: char " #item ";\t" \
+ "offset:%lu;\tsize:0;\n", \
+ offsetof(typeof(field), item)); \
+ if (!ret) \
+ return 0;
+
+
+#undef TPRAWFMT
+#define TPRAWFMT(args...) args
+
+#undef TRACE_EVENT_FORMAT
+#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
+static int \
+ftrace_format_##call(struct trace_seq *s) \
+{ \
+ struct args field; \
+ int ret; \
+ \
+ tstruct; \
+ \
+ trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
+ \
+ return ret; \
+}
+
+#include "trace_event_types.h"
+
+#undef TRACE_ZERO_CHAR
+#define TRACE_ZERO_CHAR(arg)
+
+#undef TRACE_FIELD
+#define TRACE_FIELD(type, item, assign)\
+ entry->item = assign;
+
+#undef TRACE_FIELD
+#define TRACE_FIELD(type, item, assign)\
+ entry->item = assign;
+
+#undef TPCMD
+#define TPCMD(cmd...) cmd
+
+#undef TRACE_ENTRY
+#define TRACE_ENTRY entry
+
+#undef TRACE_FIELD_SPECIAL
+#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
+ cmd;
+
+#undef TRACE_EVENT_FORMAT
+#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
+ \
+static struct ftrace_event_call __used \
+__attribute__((__aligned__(4))) \
+__attribute__((section("_ftrace_events"))) event_##call = { \
+ .name = #call, \
+ .id = proto, \
+ .system = __stringify(TRACE_SYSTEM), \
+ .show_format = ftrace_format_##call, \
+}
+#include "trace_event_types.h"
diff --git a/kernel/trace/trace_format.h b/kernel/trace/trace_format.h
new file mode 100644
index 00000000000..03f9a4c165c
--- /dev/null
+++ b/kernel/trace/trace_format.h
@@ -0,0 +1,55 @@
+/*
+ * Setup the showing format of trace point.
+ *
+ * int
+ * ftrace_format_##call(struct trace_seq *s)
+ * {
+ * struct ftrace_raw_##call field;
+ * int ret;
+ *
+ * ret = trace_seq_printf(s, #type " " #item ";"
+ * " size:%d; offset:%d;\n",
+ * sizeof(field.type),
+ * offsetof(struct ftrace_raw_##call,
+ * item));
+ *
+ * }
+ */
+
+#undef TRACE_STRUCT
+#define TRACE_STRUCT(args...) args
+
+#undef TRACE_FIELD
+#define TRACE_FIELD(type, item, assign) \
+ ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
+ "offset:%lu;\tsize:%lu;\n", \
+ offsetof(typeof(field), item), \
+ sizeof(field.item)); \
+ if (!ret) \
+ return 0;
+
+
+#undef TRACE_FIELD_SPECIAL
+#define TRACE_FIELD_SPECIAL(type_item, item, cmd) \
+ ret = trace_seq_printf(s, "\tfield special:" #type_item ";\t" \
+ "offset:%lu;\tsize:%lu;\n", \
+ offsetof(typeof(field), item), \
+ sizeof(field.item)); \
+ if (!ret) \
+ return 0;
+
+#undef TRACE_EVENT_FORMAT
+#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
+static int \
+ftrace_format_##call(struct trace_seq *s) \
+{ \
+ struct ftrace_raw_##call field; \
+ int ret; \
+ \
+ tstruct; \
+ \
+ trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
+ \
+ return ret; \
+}
+
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index c771af4e8f1..91fd19c2149 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -314,7 +314,7 @@ sysprof_sample_write(struct file *filp, const char __user *ubuf,
return cnt;
}
-static struct file_operations sysprof_sample_fops = {
+static const struct file_operations sysprof_sample_fops = {
.read = sysprof_sample_read,
.write = sysprof_sample_write,
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 09:23:31 +0000