Commit f72c1a93 authored by Frederic Weisbecker's avatar Frederic Weisbecker

perf: Factorize callchain context handling

Store the kernel and user contexts from the generic layer instead
of archs, this gathers some repetitive code.
Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Acked-by: default avatarPaul Mackerras <paulus@samba.org>
Tested-by: default avatarWill Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Borislav Petkov <bp@amd64.org>
parent 56962b44
......@@ -3049,7 +3049,6 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
struct frame_tail *tail;
perf_callchain_store(entry, PERF_CONTEXT_USER);
tail = (struct frame_tail *)regs->ARM_fp - 1;
......@@ -3076,7 +3075,6 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
struct stackframe fr;
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
fr.fp = regs->ARM_fp;
fr.sp = regs->ARM_sp;
fr.lr = regs->ARM_lr;
......
......@@ -57,7 +57,6 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
lr = regs->link;
sp = regs->gpr[1];
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->nip);
if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
......@@ -234,7 +233,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
next_ip = regs->nip;
lr = regs->link;
sp = regs->gpr[1];
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, next_ip);
for (;;) {
......@@ -435,7 +433,6 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
next_ip = regs->nip;
lr = regs->link;
sp = regs->gpr[1];
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, next_ip);
while (entry->nr < PERF_MAX_STACK_DEPTH) {
......
......@@ -47,7 +47,6 @@ static const struct stacktrace_ops callchain_ops = {
void
perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->pc);
unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
......
......@@ -1293,7 +1293,6 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
stack_trace_flush();
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->tpc);
ksp = regs->u_regs[UREG_I6];
......@@ -1337,7 +1336,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
{
unsigned long ufp;
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->tpc);
ufp = regs->u_regs[UREG_I6] + STACK_BIAS;
......@@ -1360,7 +1358,6 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
{
unsigned long ufp;
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->tpc);
ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
......
......@@ -1608,7 +1608,6 @@ static const struct stacktrace_ops backtrace_ops = {
void
perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->ip);
dump_trace(NULL, regs, NULL, regs->bp, &backtrace_ops, entry);
......@@ -1660,7 +1659,6 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
fp = (void __user *)regs->bp;
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->ip);
if (perf_callchain_user32(regs, entry))
......
......@@ -2969,6 +2969,7 @@ static struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
entry->nr = 0;
if (!user_mode(regs)) {
perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_kernel(entry, regs);
if (current->mm)
regs = task_pt_regs(current);
......@@ -2976,8 +2977,10 @@ static struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
regs = NULL;
}
if (regs)
if (regs) {
perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_user(entry, regs);
}
return entry;
}
......
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