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powerpc: Rename 'tsk' parameter into 'task' 

To better match generic code, rename 'tsk' to 'task' in
some stacktrace functions in preparation of following
patch which converts powerpc to generic ARCH_STACKWALK.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/117f0200e11961af6c0fdf85c98373e5dcf96a47.1615881400.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-03-16 07:57:14 +00:00 committed by Michael Ellerman
parent accdd093f2
commit 826a307b0a
1 changed files with 8 additions and 8 deletions
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16
arch/powerpc/kernel/stacktrace.c
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@ -27,13 +27,13 @@
* Save stack-backtrace addresses into a stack_trace buffer.
*/
static void save_context_stack(struct stack_trace *trace, unsigned long sp,
struct task_struct *tsk, int savesched)
struct task_struct *task, int savesched)
{
for (;;) {
unsigned long *stack = (unsigned long *) sp;
unsigned long newsp, ip;
if (!validate_sp(sp, tsk, STACK_FRAME_OVERHEAD))
if (!validate_sp(sp, task, STACK_FRAME_OVERHEAD))
return;
newsp = stack[0];
@ -94,18 +94,18 @@ EXPORT_SYMBOL_GPL(save_stack_trace_regs);
*
* If the task is not 'current', the caller *must* ensure the task is inactive.
*/
static int __save_stack_trace_tsk_reliable(struct task_struct *tsk,
static int __save_stack_trace_tsk_reliable(struct task_struct *task,
struct stack_trace *trace)
{
unsigned long sp;
unsigned long newsp;
unsigned long stack_page = (unsigned long)task_stack_page(tsk);
unsigned long stack_page = (unsigned long)task_stack_page(task);
unsigned long stack_end;
int graph_idx = 0;
bool firstframe;
stack_end = stack_page + THREAD_SIZE;
if (!is_idle_task(tsk)) {
if (!is_idle_task(task)) {
/*
* For user tasks, this is the SP value loaded on
* kernel entry, see "PACAKSAVE(r13)" in _switch() and
@ -129,10 +129,10 @@ static int __save_stack_trace_tsk_reliable(struct task_struct *tsk,
stack_end -= STACK_FRAME_OVERHEAD;
}
if (tsk == current)
if (task == current)
sp = current_stack_frame();
else
sp = tsk->thread.ksp;
sp = task->thread.ksp;
if (sp < stack_page + sizeof(struct thread_struct) ||
sp > stack_end - STACK_FRAME_MIN_SIZE) {
@ -181,7 +181,7 @@ static int __save_stack_trace_tsk_reliable(struct task_struct *tsk,
* FIXME: IMHO these tests do not belong in
* arch-dependent code, they are generic.
*/
ip = ftrace_graph_ret_addr(tsk, &graph_idx, ip, stack);
ip = ftrace_graph_ret_addr(task, &graph_idx, ip, stack);
#ifdef CONFIG_KPROBES
/*
* Mark stacktraces with kretprobed functions on them