Patchwork [1/6,v2] linux-user: bigger default stack

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Submitter Riku Voipio
Date April 18, 2011, 5:28 p.m.
Message ID <2e9076fbc1e96e17640c5a46f105cc1974f25192.1303146624.git.riku.voipio@iki.fi>
Download mbox | patch
Permalink /patch/91814/
State New
Headers show

Comments

Riku Voipio - April 18, 2011, 5:28 p.m.
From: Riku Voipio <riku.voipio@nokia.com>

PTHREAD_STACK_MIN (16KB) is somewhat inadequate for a new stack for new
QEMU threads. Set new limit to 256K which should be enough, yet doesn't
increase memory pressure significantly.

Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
---
 linux-user/syscall.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index bb0999d..732f71a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -3690,9 +3690,9 @@  static abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
 
 #endif /* defined(TARGET_I386) */
 
-#if defined(CONFIG_USE_NPTL)
+#define NEW_STACK_SIZE 0x40000
 
-#define NEW_STACK_SIZE PTHREAD_STACK_MIN
+#if defined(CONFIG_USE_NPTL)
 
 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
 typedef struct {
@@ -3736,9 +3736,6 @@  static void *clone_func(void *arg)
     return NULL;
 }
 #else
-/* this stack is the equivalent of the kernel stack associated with a
-   thread/process */
-#define NEW_STACK_SIZE 8192
 
 static int clone_func(void *arg)
 {