The patch titled
mips: implement save_stack_trace_tsk()
has been removed from the -mm tree. Its filename was
mips-implement-save_stack_trace_tsk.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mips: implement save_stack_trace_tsk()
From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
fs/built-in.o(.text.proc_pid_stack+0xc8): In function `proc_pid_stack':
: undefined reference to `save_stack_trace_tsk'
Partially revert ab1b6f03a10ba1f5638188ab06bf46e33ac3a160 aka "simplify
the stacktrace code" for /proc/*/stack et al.
Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/mips/kernel/stacktrace.c | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff -puN arch/mips/kernel/stacktrace.c~mips-implement-save_stack_trace_tsk arch/mips/kernel/stacktrace.c
--- a/arch/mips/kernel/stacktrace.c~mips-implement-save_stack_trace_tsk
+++ a/arch/mips/kernel/stacktrace.c
@@ -32,7 +32,8 @@ static void save_raw_context_stack(struc
}
}
-static void save_context_stack(struct stack_trace *trace, struct pt_regs *regs)
+static void save_context_stack(struct stack_trace *trace,
+ struct task_struct *tsk, struct pt_regs *regs)
{
unsigned long sp = regs->regs[29];
#ifdef CONFIG_KALLSYMS
@@ -41,7 +42,7 @@ static void save_context_stack(struct st
if (raw_show_trace || !__kernel_text_address(pc)) {
unsigned long stack_page =
- (unsigned long)task_stack_page(current);
+ (unsigned long)task_stack_page(tsk);
if (stack_page && sp >= stack_page &&
sp <= stack_page + THREAD_SIZE - 32)
save_raw_context_stack(trace, sp);
@@ -54,7 +55,7 @@ static void save_context_stack(struct st
trace->entries[trace->nr_entries++] = pc;
if (trace->nr_entries >= trace->max_entries)
break;
- pc = unwind_stack(current, &sp, pc, &ra);
+ pc = unwind_stack(tsk, &sp, pc, &ra);
} while (pc);
#else
save_raw_context_stack(trace, sp);
@@ -66,12 +67,23 @@ static void save_context_stack(struct st
*/
void save_stack_trace(struct stack_trace *trace)
{
+ save_stack_trace_tsk(current, trace);
+}
+EXPORT_SYMBOL_GPL(save_stack_trace);
+
+void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
+{
struct pt_regs dummyregs;
struct pt_regs *regs = &dummyregs;
WARN_ON(trace->nr_entries || !trace->max_entries);
- prepare_frametrace(regs);
- save_context_stack(trace, regs);
+ if (tsk != current) {
+ regs->regs[29] = tsk->thread.reg29;
+ regs->regs[31] = 0;
+ regs->cp0_epc = tsk->thread.reg31;
+ } else
+ prepare_frametrace(regs);
+ save_context_stack(trace, tsk, regs);
}
-EXPORT_SYMBOL_GPL(save_stack_trace);
+EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxx are
linux-next.patch
tags-skip-in-filenames.patch
kconfig-add-module_name-shortcut.patch
tags-link-from-config_x-to-config-x-as-well.patch
mpt-remove-unused-struct-mpt_proc_entry_t.patch
vfs-fix-switch_names-breakage-in-short-to-short-case.patch
mm-report-the-pagesize-backing-a-vma-in-proc-pid-smaps.patch
mm-report-the-mmu-pagesize-in-proc-pid-smaps.patch
remove-remaining-unwinder-code.patch
ipc-ipc_sysctlc-move-the-definition-of-ipc_auto_callback.patch
profile-likely-unlikely-macros.patch
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