evie/android_kernel_oneplus_msm8998
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sparc64: Add save_stack_trace_tsk().

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And this allows us to indicate HAVE_LATENCYTOP_SUPPORT.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-11-28 01:19:41 -08:00
parent 3a29db3222
commit 6a5726dd6f
2 changed files with 27 additions and 9 deletions
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4
arch/sparc/Kconfig
View file

@ -72,6 +72,10 @@ config LOCKDEP_SUPPORT
bool bool
default y if SPARC64 default y if SPARC64
config HAVE_LATENCYTOP_SUPPORT
bool
default y if SPARC64
config AUDIT_ARCH config AUDIT_ARCH
bool bool
default y if SPARC64 default y if SPARC64

30
arch/sparc64/kernel/stacktrace.c
View file

@ -7,17 +7,18 @@
#include "kstack.h" #include "kstack.h"
void save_stack_trace(struct stack_trace *trace) static void __save_stack_trace(struct thread_info *tp,
struct stack_trace *trace,
bool skip_sched)
{ {
struct thread_info *tp = task_thread_info(current);
unsigned long ksp, fp; unsigned long ksp, fp;
if (tp == current_thread_info()) {
stack_trace_flush(); stack_trace_flush();
__asm__ __volatile__("mov %%fp, %0" : "=r" (ksp));
__asm__ __volatile__( } else {
"mov %%fp, %0" ksp = tp->ksp;
: "=r" (ksp) }
);
fp = ksp + STACK_BIAS; fp = ksp + STACK_BIAS;
do { do {
@ -43,8 +44,21 @@ void save_stack_trace(struct stack_trace *trace)
if (trace->skip > 0) if (trace->skip > 0)
trace->skip--; trace->skip--;
else else if (!skip_sched || !in_sched_functions(pc))
trace->entries[trace->nr_entries++] = pc; trace->entries[trace->nr_entries++] = pc;
} while (trace->nr_entries < trace->max_entries); } while (trace->nr_entries < trace->max_entries);
} }
void save_stack_trace(struct stack_trace *trace)
{
__save_stack_trace(current_thread_info(), trace, false);
}
EXPORT_SYMBOL_GPL(save_stack_trace); EXPORT_SYMBOL_GPL(save_stack_trace);
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
struct thread_info *tp = task_thread_info(tsk);
__save_stack_trace(tp, trace, true);
}
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);