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Diffstat (limited to 'arch/sh/kernel/perf_callchain.c')
-rw-r--r--arch/sh/kernel/perf_callchain.c50
1 files changed, 4 insertions, 46 deletions
diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c
index a9dd3abde28e..d5ca1ef50fa9 100644
--- a/arch/sh/kernel/perf_callchain.c
+++ b/arch/sh/kernel/perf_callchain.c
@@ -14,11 +14,6 @@
#include <asm/unwinder.h>
#include <asm/ptrace.h>
-static inline void callchain_store(struct perf_callchain_entry *entry, u64 ip)
-{
- if (entry->nr < PERF_MAX_STACK_DEPTH)
- entry->ip[entry->nr++] = ip;
-}
static void callchain_warning(void *data, char *msg)
{
@@ -39,7 +34,7 @@ static void callchain_address(void *data, unsigned long addr, int reliable)
struct perf_callchain_entry *entry = data;
if (reliable)
- callchain_store(entry, addr);
+ perf_callchain_store(entry, addr);
}
static const struct stacktrace_ops callchain_ops = {
@@ -49,47 +44,10 @@ static const struct stacktrace_ops callchain_ops = {
.address = callchain_address,
};
-static void
-perf_callchain_kernel(struct pt_regs *regs, struct perf_callchain_entry *entry)
+void
+perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
- callchain_store(entry, PERF_CONTEXT_KERNEL);
- callchain_store(entry, regs->pc);
+ perf_callchain_store(entry, regs->pc);
unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
}
-
-static void
-perf_do_callchain(struct pt_regs *regs, struct perf_callchain_entry *entry)
-{
- int is_user;
-
- if (!regs)
- return;
-
- is_user = user_mode(regs);
-
- if (is_user && current->state != TASK_RUNNING)
- return;
-
- /*
- * Only the kernel side is implemented for now.
- */
- if (!is_user)
- perf_callchain_kernel(regs, entry);
-}
-
-/*
- * No need for separate IRQ and NMI entries.
- */
-static DEFINE_PER_CPU(struct perf_callchain_entry, callchain);
-
-struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
-{
- struct perf_callchain_entry *entry = &__get_cpu_var(callchain);
-
- entry->nr = 0;
-
- perf_do_callchain(regs, entry);
-
- return entry;
-}