+++ /dev/null
-From f839de283c44ffe46a2d14bfdf854c145abd8ed6 Mon Sep 17 00:00:00 2001
-From: Colin Ian King <colin.king@canonical.com>
-Date: Mon, 19 Jul 2021 20:49:34 +0100
-Subject: [PATCH] Detemine minimal stack size via sysconf, then PTHREAD_STACK_MIN then guess
-
-Don't rely on PTHREAD_STACK_MIN being defined, use sysconf, then
-PTHREAD_STACK_MIN if it is defined, then 8K default.
-
-Upstream-Status: Backport [https://kernel.ubuntu.com/git/cking/stress-ng.git/commit/?id=f839de283c44ffe46a2d14bfdf854c145abd8ed6]
-Signed-off-by: Colin Ian King <colin.king@canonical.com>
----
- core-helper.c | 31 +++++++++++++++++++++++++++++++
- stress-ng.h | 1 +
- stress-pthread.c | 13 ++-----------
- 3 files changed, 34 insertions(+), 11 deletions(-)
-
-diff --git a/core-helper.c b/core-helper.c
-index 508627f2..97a3b869 100644
---- a/core-helper.c
-+++ b/core-helper.c
-@@ -2494,6 +2494,37 @@ size_t stress_min_sig_stack_size(void)
- return (size_t)sz;
- }
-
-+size_t stress_min_pthread_stack_size(void)
-+{
-+ static long sz = -1, min;
-+
-+ /* return cached copy */
-+ if (sz > 0)
-+ return sz;
-+
-+ min = stress_min_aux_sig_stack_size();
-+#if defined(__SC_THREAD_STACK_MIN_VALUE)
-+ sz = sysconf(__SC_THREAD_STACK_MIN_VALUE);
-+ if (sz > min)
-+ min = sz;
-+#endif
-+#if defined(_SC_THREAD_STACK_MIN_VALUE)
-+ sz = sysconf(_SC_THREAD_STACK_MIN_VALUE);
-+ if (sz > min)
-+ min = sz;
-+#endif
-+#if defined(PTHREAD_STACK_MIN)
-+ if (PTHREAD_STACK_MIN > min)
-+ min = PTHREAD_STACK_MIN;
-+#endif
-+ if (8192 > min)
-+ min = 8192;
-+
-+ sz = min;
-+
-+ return (size_t)sz;
-+}
-+
- /*
- * stress_sig_handler_exit()
- * signal handler that exits a process via _exit(0) for
-diff --git a/stress-ng.h b/stress-ng.h
-index 8a8b17ae..cd744756 100644
---- a/stress-ng.h
-+++ b/stress-ng.h
-@@ -4056,6 +4056,7 @@ extern WARN_UNUSED int32_t stress_get_opt_ionice_class(const char *const str);
- /* Misc helper funcs */
- extern WARN_UNUSED size_t stress_sig_stack_size(void);
- extern WARN_UNUSED size_t stress_min_sig_stack_size(void);
-+extern WARN_UNUSED size_t stress_min_pthread_stack_size(void);
-
- #define STRESS_SIGSTKSZ (stress_sig_stack_size())
- #define STRESS_MINSIGSTKSZ (stress_min_sig_stack_size())
-diff --git a/stress-pthread.c b/stress-pthread.c
-index 0da3aeec..27777af8 100644
---- a/stress-pthread.c
-+++ b/stress-pthread.c
-@@ -69,12 +69,7 @@ static const stress_opt_set_func_t opt_set_funcs[] = {
-
- #if defined(HAVE_LIB_PTHREAD)
-
--/* Some systems such as GNU/HURD don't define PTHREAD_STACK_MIN */
--#if !defined(PTHREAD_STACK_MIN)
--#define PTHREAD_STACK_MIN (16 * KB)
--#endif
--
--#define DEFAULT_STACK_MIN (16 * KB)
-+#define DEFAULT_STACK_MIN (8 * KB)
-
- #if defined(HAVE_GET_ROBUST_LIST) && \
- defined(HAVE_LINUX_FUTEX_H)
-@@ -404,11 +399,7 @@ static int stress_pthread(const stress_args_t *args)
- stress_pthread_args_t pargs = { args, NULL, 0 };
- sigset_t set;
- #if defined(HAVE_PTHREAD_ATTR_SETSTACK)
--#if DEFAULT_STACK_MIN == PTHREAD_STACK_MIN
-- const size_t stack_size = PTHREAD_STACK_MIN;
--#else
-- const size_t stack_size = STRESS_MAXIMUM(DEFAULT_STACK_MIN, PTHREAD_STACK_MIN);
--#endif
-+ const size_t stack_size = STRESS_MAXIMUM(DEFAULT_STACK_MIN, stress_min_pthread_stack_size());
- #endif
-
- keep_running_flag = true;
---
-2.32.0
