The patch titled
Subject: stacktrace: introduce snprint_stack_trace for buffer output
has been removed from the -mm tree. Its filename was
stacktrace-introduce-snprint_stack_trace-for-buffer-output.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Subject: stacktrace: introduce snprint_stack_trace for buffer output
Current stacktrace only have the function for console output. page_owner
that will be introduced in following patch needs to print the output of
stacktrace into the buffer for our own output format so so new function,
snprint_stack_trace(), is needed.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Dave Hansen <dave@xxxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Jungsoo Son <jungsoo.son@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/stacktrace.h | 5 +++++
kernel/stacktrace.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
diff -puN include/linux/stacktrace.h~stacktrace-introduce-snprint_stack_trace-for-buffer-output include/linux/stacktrace.h
--- a/include/linux/stacktrace.h~stacktrace-introduce-snprint_stack_trace-for-buffer-output
+++ a/include/linux/stacktrace.h
@@ -1,6 +1,8 @@
#ifndef __LINUX_STACKTRACE_H
#define __LINUX_STACKTRACE_H
+#include <linux/types.h>
+
struct task_struct;
struct pt_regs;
@@ -20,6 +22,8 @@ extern void save_stack_trace_tsk(struct
struct stack_trace *trace);
extern void print_stack_trace(struct stack_trace *trace, int spaces);
+extern int snprint_stack_trace(char *buf, size_t size,
+ struct stack_trace *trace, int spaces);
#ifdef CONFIG_USER_STACKTRACE_SUPPORT
extern void save_stack_trace_user(struct stack_trace *trace);
@@ -32,6 +36,7 @@ extern void save_stack_trace_user(struct
# define save_stack_trace_tsk(tsk, trace) do { } while (0)
# define save_stack_trace_user(trace) do { } while (0)
# define print_stack_trace(trace, spaces) do { } while (0)
+# define snprint_stack_trace(buf, size, trace, spaces) do { } while (0)
#endif
#endif
diff -puN kernel/stacktrace.c~stacktrace-introduce-snprint_stack_trace-for-buffer-output kernel/stacktrace.c
--- a/kernel/stacktrace.c~stacktrace-introduce-snprint_stack_trace-for-buffer-output
+++ a/kernel/stacktrace.c
@@ -25,6 +25,38 @@ void print_stack_trace(struct stack_trac
}
EXPORT_SYMBOL_GPL(print_stack_trace);
+int snprint_stack_trace(char *buf, size_t size,
+ struct stack_trace *trace, int spaces)
+{
+ int i;
+ unsigned long ip;
+ int generated;
+ int total = 0;
+
+ if (WARN_ON(!trace->entries))
+ return 0;
+
+ for (i = 0; i < trace->nr_entries; i++) {
+ ip = trace->entries[i];
+ generated = snprintf(buf, size, "%*c[<%p>] %pS\n",
+ 1 + spaces, ' ', (void *) ip, (void *) ip);
+
+ total += generated;
+
+ /* Assume that generated isn't a negative number */
+ if (generated >= size) {
+ buf += size;
+ size = 0;
+ } else {
+ buf += generated;
+ size -= generated;
+ }
+ }
+
+ return total;
+}
+EXPORT_SYMBOL_GPL(snprint_stack_trace);
+
/*
* Architectures that do not implement save_stack_trace_tsk or
* save_stack_trace_regs get this weak alias and a once-per-bootup warning
_
Patches currently in -mm which might be from iamjoonsoo.kim@xxxxxxx are
origin.patch
mm-cma-split-cma-reserved-in-dmesg-log.patch
fs-proc-include-cma-info-in-proc-meminfo.patch
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