renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-18 02:04:05 +08:00
Code

tracing/kprobes: Pass trace_probe directly from dispatcher

Browse Source 
Pass the pointer of struct trace_probe directly from probe
dispatcher to handlers. This removes redundant container_of
macro uses. Same thing has already done in trace_uprobe.

Link: http://lkml.kernel.org/r/20130509054441.30398.69112.stgit@mhiramat-M0-7522

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <tom.zanussi@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2013-05-09 14:44:41 +09:00 committed by Steven Rostedt
parent 48182bd226
commit 2b106aabe6
1 changed files with 16 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
kernel/trace/trace_kprobe.c
View File

@ -723,9 +723,9 @@ static __kprobes void store_trace_args(int ent_size, struct trace_probe *tp,
}
/* Kprobe handler */
static __kprobes void kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
static __kprobes void
kprobe_trace_func(struct trace_probe *tp, struct pt_regs *regs)
{
struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
struct kprobe_trace_entry_head *entry;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
@ -745,7 +745,7 @@ static __kprobes void kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
return;
entry = ring_buffer_event_data(event);
entry->ip = (unsigned long)kp->addr;
entry->ip = (unsigned long)tp->rp.kp.addr;
store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
if (!filter_current_check_discard(buffer, call, entry, event))
@ -754,10 +754,10 @@ static __kprobes void kprobe_trace_func(struct kprobe *kp, struct pt_regs *regs)
}
/* Kretprobe handler */
static __kprobes void kretprobe_trace_func(struct kretprobe_instance *ri,
static __kprobes void
kretprobe_trace_func(struct trace_probe *tp, struct kretprobe_instance *ri,
struct pt_regs *regs)
{
struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
struct kretprobe_trace_entry_head *entry;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
@ -973,10 +973,9 @@ static int set_print_fmt(struct trace_probe *tp)
#ifdef CONFIG_PERF_EVENTS
/* Kprobe profile handler */
static __kprobes void kprobe_perf_func(struct kprobe *kp,
struct pt_regs *regs)
static __kprobes void
kprobe_perf_func(struct trace_probe *tp, struct pt_regs *regs)
{
struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
struct ftrace_event_call *call = &tp->call;
struct kprobe_trace_entry_head *entry;
struct hlist_head *head;
@ -995,7 +994,7 @@ static __kprobes void kprobe_perf_func(struct kprobe *kp,
if (!entry)
return;
entry->ip = (unsigned long)kp->addr;
entry->ip = (unsigned long)tp->rp.kp.addr;
memset(&entry[1], 0, dsize);
store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
@ -1005,10 +1004,10 @@ static __kprobes void kprobe_perf_func(struct kprobe *kp,
}
/* Kretprobe profile handler */
static __kprobes void kretprobe_perf_func(struct kretprobe_instance *ri,
static __kprobes void
kretprobe_perf_func(struct trace_probe *tp, struct kretprobe_instance *ri,
struct pt_regs *regs)
{
struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
struct ftrace_event_call *call = &tp->call;
struct kretprobe_trace_entry_head *entry;
struct hlist_head *head;
@ -1074,10 +1073,10 @@ int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs)
tp->nhit++;
if (tp->flags & TP_FLAG_TRACE)
kprobe_trace_func(kp, regs);
kprobe_trace_func(tp, regs);
#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kprobe_perf_func(kp, regs);
kprobe_perf_func(tp, regs);
#endif
return 0; /* We don't tweek kernel, so just return 0 */
}
@ -1090,10 +1089,10 @@ int kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs)
tp->nhit++;
if (tp->flags & TP_FLAG_TRACE)
kretprobe_trace_func(ri, regs);
kretprobe_trace_func(tp, ri, regs);
#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kretprobe_perf_func(ri, regs);
kretprobe_perf_func(tp, ri, regs);
#endif
return 0; /* We don't tweek kernel, so just return 0 */
}