A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-24 05:29:04 -04:00
Code Issues Projects Releases Packages Wiki Activity

tracing: Allow events to share their print functions

Browse source 
Multiple events may use the same method to print their data.
Instead of having all events have a pointer to their print funtions,
the trace_event structure now points to a trace_event_functions structure
that will hold the way to print ouf the event.

The event itself is now passed to the print function to let the print
function know what kind of event it should print.

This opens the door to consolidating the way several events print
their output.

   text	   data	    bss	    dec	    hex	filename
4913961	1088356	 861512	6863829	 68bbd5	vmlinux.orig
4900382	1048964	 861512	6810858	 67ecea	vmlinux.init
4900446	1049028	 861512	6810986	 67ed6a	vmlinux.preprint

This change slightly increases the size but is needed for the next change.

v3: Fix the branch tracer events to handle this change.

v2: Fix the new function graph tracer event calls to handle this change.

Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2010-04-22 18:46:14 -04:00 • committed by Steven Rostedt
commit a9a5776380
13 changed files with 192 additions and 92 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/linux/ftrace_event.h
View file

@ -70,18 +70,25 @@ struct trace_iterator {
};
struct trace_event;
typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
int flags);
struct trace_event {
struct hlist_node node;
struct list_head list;
int type;
int flags, struct trace_event *event);
struct trace_event_functions {
trace_print_func trace;
trace_print_func raw;
trace_print_func hex;
trace_print_func binary;
};
struct trace_event {
struct hlist_node node;
struct list_head list;
int type;
struct trace_event_functions *funcs;
};
extern int register_ftrace_event(struct trace_event *event);
extern int unregister_ftrace_event(struct trace_event *event);

10
include/linux/syscalls.h
View file

@ -125,9 +125,12 @@ extern struct ftrace_event_class event_class_syscall_exit;
static struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call \
__attribute__((__aligned__(4))) event_enter_##sname; \
static struct trace_event enter_syscall_print_##sname = { \
static struct trace_event_functions enter_syscall_print_funcs_##sname = { \
.trace = print_syscall_enter, \
}; \
static struct trace_event enter_syscall_print_##sname = { \
.funcs = &enter_syscall_print_funcs_##sname, \
}; \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
@ -142,9 +145,12 @@ extern struct ftrace_event_class event_class_syscall_exit;
static struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call \
__attribute__((__aligned__(4))) event_exit_##sname; \
static struct trace_event exit_syscall_print_##sname = { \
static struct trace_event_functions exit_syscall_print_funcs_##sname = { \
.trace = print_syscall_exit, \
}; \
static struct trace_event exit_syscall_print_##sname = { \
.funcs = &exit_syscall_print_funcs_##sname, \
}; \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \