Date: Wed, 19 Nov 2025 16:23:46 +0530
From: Shivang Upadhyay <[email protected]>
Subject: [Crash-utility] [PATCH] make the MAX_MALLOC_BUFS customizable
To: [email protected], [email protected]
Cc: [email protected], [email protected]
Message-ID: <[email protected]>
default value is kept to 2000, but can be changed with
command line with flag `--max-malloc-bufs`.
Signed-off-by: Shivang Upadhyay <[email protected]>
---
defs.h | 1 +
main.c | 4 ++++
tools.c | 9 ++++++---
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/defs.h b/defs.h
index ab4aee8..863baf9 100644
--- a/defs.h
+++ b/defs.h
@@ -5608,6 +5608,7 @@ void exec_args_input_file(struct command_table_entry
*, struct args_input_file *
/*
* tools.c
*/
+extern int MAX_MALLOC_BUFS;
FILE *set_error(char *);
int __error(int, char *, ...);
#define error __error /* avoid conflict with gdb error() */
diff --git a/main.c b/main.c
index 71bcc15..e986792 100644
--- a/main.c
+++ b/main.c
@@ -46,6 +46,7 @@ static struct option long_options[] = {
{"version", 0, 0, 0},
{"buildinfo", 0, 0, 0},
{"cpus", required_argument, 0, 0},
+ {"max-malloc-bufs", required_argument, 0, 0},
{"no_ikconfig", 0, 0, 0},
{"hyper", 0, 0, 0},
{"p2m_mfn", required_argument, 0, 0},
@@ -163,6 +164,9 @@ main(int argc, char **argv)
else if (STREQ(long_options[option_index].name,
"cpus"))
kt->cpus_override = optarg;
+ else if (STREQ(long_options[option_index].name,
"max-malloc-bufs"))
+ MAX_MALLOC_BUFS = atoi(optarg);
+
else if (STREQ(long_options[option_index].name,
"hyper"))
pc->flags |= XEN_HYPER;
diff --git a/tools.c b/tools.c
index a9ad18d..c9867e1 100644
--- a/tools.c
+++ b/tools.c
@@ -5698,7 +5698,7 @@ ll_power(long long base, long long exp)
#define B32K (4)
#define SHARED_BUF_SIZES (B32K+1)
-#define MAX_MALLOC_BUFS (2000)
+int MAX_MALLOC_BUFS = 2000; /* can be changed from command line args */
