7856369dc2
Add a command interface for the malloc-traffic log:
- malloc log start: Start recording allocations
- malloc log stop: Stop recording
- malloc log: Dump the recorded entries
Example output:
=> malloc log
Malloc log: 29 entries (max 524288, total 29)
Seq Type Ptr Size Caller
---- -------- ---------------- -------- ------
0 free 16a016e0 0 free_pipe_list:2001
<-parse_stream_outer:3208 <-parse_file_outer:3300
1 alloc 16a01b90 20 hush_file_init:3277
<-parse_file_outer:3295 <-run_pipe_real:1986
Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* malloc command - show malloc information
|
|
*
|
|
* Copyright 2025 Canonical Ltd
|
|
* Written by Simon Glass <simon.glass@canonical.com>
|
|
*/
|
|
|
|
#include <command.h>
|
|
#include <display_options.h>
|
|
#include <malloc.h>
|
|
|
|
static int do_malloc_info(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
struct malloc_info info;
|
|
char buf[12];
|
|
int ret;
|
|
|
|
ret = malloc_get_info(&info);
|
|
if (ret)
|
|
return CMD_RET_FAILURE;
|
|
|
|
printf("total bytes = %s\n", format_size(buf, info.total_bytes));
|
|
printf("in use bytes = %s\n", format_size(buf, info.in_use_bytes));
|
|
printf("malloc count = %lu\n", info.malloc_count);
|
|
printf("free count = %lu\n", info.free_count);
|
|
printf("realloc count = %lu\n", info.realloc_count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int do_malloc_dump(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
malloc_dump();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused do_malloc_log(struct cmd_tbl *cmdtp, int flag,
|
|
int argc, char *const argv[])
|
|
{
|
|
if (argc < 2) {
|
|
malloc_log_dump();
|
|
return 0;
|
|
}
|
|
|
|
if (!strcmp(argv[1], "start")) {
|
|
malloc_log_start();
|
|
printf("Malloc logging started\n");
|
|
} else if (!strcmp(argv[1], "stop")) {
|
|
malloc_log_stop();
|
|
printf("Malloc logging stopped\n");
|
|
} else if (!strcmp(argv[1], "dump")) {
|
|
malloc_log_dump();
|
|
} else {
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(CMD_MALLOC_LOG)
|
|
#define MALLOC_LOG_HELP \
|
|
"malloc log [start|stop|dump] - log malloc traffic\n" \
|
|
" start - start recording malloc/free calls\n" \
|
|
" stop - stop recording\n" \
|
|
" dump - print the log (or just 'malloc log')\n"
|
|
#define MALLOC_LOG_SUBCMD , U_BOOT_SUBCMD_MKENT(log, 3, 1, do_malloc_log)
|
|
#else
|
|
#define MALLOC_LOG_HELP
|
|
#define MALLOC_LOG_SUBCMD
|
|
#endif
|
|
|
|
U_BOOT_LONGHELP(malloc,
|
|
"info - display malloc statistics\n"
|
|
"malloc dump - dump heap chunks (address, size, status)\n"
|
|
MALLOC_LOG_HELP);
|
|
|
|
U_BOOT_CMD_WITH_SUBCMDS(malloc, "malloc information", malloc_help_text,
|
|
U_BOOT_SUBCMD_MKENT(info, 1, 1, do_malloc_info),
|
|
U_BOOT_SUBCMD_MKENT(dump, 1, 1, do_malloc_dump)
|
|
MALLOC_LOG_SUBCMD);
|