Function report |
Source Code:kernel\trace\trace_kprobe.c |
Create Date:2022-07-28 12:39:02 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Allocate new trace_probe and initialize it (including kprobes).
Proto:static struct trace_kprobe *alloc_trace_kprobe(const char *group, const char *event, void *addr, const char *symbol, unsigned long offs, int maxactive, int nargs, bool is_return)
Type:struct trace_kprobe
Parameter:
Type | Parameter | Name |
---|---|---|
const char * | group | |
const char * | event | |
void * | addr | |
const char * | symbol | |
unsigned long | offs | |
int | maxactive | |
int | nargs | |
bool | is_return |
267 | tk = kzalloc - allocate memory. The memory is set to zero.*@size: how many bytes of memory are required.*@flags: the type of memory to allocate (see kmalloc). |
271 | nhit = alloc_percpu(unsignedlong) |
275 | If symbol Then |
276 | symbol name = kstrdup(symbol, GFP_KERNEL) |
277 | If Not symbol name Then Go to error |
280 | Offset into the symbol = offs |
281 | Else location of the probe point = addr |
284 | If is_return Then handler = kretprobe_dispatcher |
286 | Else Called before addr is executed. = kprobe_dispatcher |
290 | INIT_HLIST_NODE( & hlist) |
293 | ret = trace_probe_init( & tp, event, group, false) |
297 | dyn_event_init( & devent, & trace_kprobe_ops) |
298 | Return tk |
299 | error : |
300 | free_trace_kprobe(tk) |
Name | Describe |
---|---|
trace_kprobe_create |
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