Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Paul Mundt |
119 |
92.97% |
1 |
20.00% |
| Frédéric Weisbecker |
5 |
3.91% |
2 |
40.00% |
| Arnaldo Carvalho de Melo |
2 |
1.56% |
1 |
20.00% |
| Kuninori Morimoto |
2 |
1.56% |
1 |
20.00% |
| Total |
128 |
|
5 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Performance event callchain support - SuperH architecture code
*
* Copyright (C) 2009 Paul Mundt
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/perf_event.h>
#include <linux/percpu.h>
#include <asm/unwinder.h>
#include <asm/ptrace.h>
static int callchain_stack(void *data, char *name)
{
return 0;
}
static void callchain_address(void *data, unsigned long addr, int reliable)
{
struct perf_callchain_entry_ctx *entry = data;
if (reliable)
perf_callchain_store(entry, addr);
}
static const struct stacktrace_ops callchain_ops = {
.stack = callchain_stack,
.address = callchain_address,
};
void
perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
{
perf_callchain_store(entry, regs->pc);
unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
}