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tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs

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[ Upstream commit 8565a45d0858078b63c7d84074a21a42ba9ebf01 ]

In preparation to allow event probes to use the process_fetch_insn()
callback in trace_probe_tmpl.h, change the data passed to it from a
pointer to pt_regs, as the event probe will not be using regs, and make it
a void pointer instead.

Update the process_fetch_insn() callers for kprobe and uprobe events to
have the regs defined in the function and just typecast the void pointer
parameter.

Link: https://lkml.kernel.org/r/20210819041842.291622924@goodmis.org

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Stable-dep-of: e38e2c6a9efc ("tracing/probes: Fix to update dynamic data counter if fetcharg uses it")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Steven Rostedt (VMware)
2021-08-19 00:13:28 -04:00
committed by Greg Kroah-Hartman
parent a890545353
commit 265a979ded
3 changed files with 7 additions and 5 deletions
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3
kernel/trace/trace_kprobe.c
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@@ -1332,9 +1332,10 @@ probe_mem_read(void *dest, void *src, size_t size)
/* Note that we don't verify it, since the code does not come from user space */
static int
process_fetch_insn(struct fetch_insn *code, struct pt_regs *regs, void *dest,
process_fetch_insn(struct fetch_insn *code, void *rec, void *dest,
void *base)
{
struct pt_regs *regs = rec;
unsigned long val;
retry: