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

diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c
index a2a0505..5b93650 100644 (file)
--- a/arch/powerpc/kernel/stacktrace.c
+++ b/arch/powerpc/kernel/stacktrace.c
@@ -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