From b63162939cd797c8269964ce856ed1f2fec5f70e Mon Sep 17 00:00:00 2001 From: Paolo 'Blaisorblade' Giarrusso Date: Wed, 18 Jan 2006 17:42:58 -0800 Subject: [PATCH] uml: avoid malloc to sleep in atomic sections Ugly trick to help make malloc not sleeping - we can't do anything else. But this is not yet optimal, since spinlock don't trigger in_atomic() when preemption is disabled. Also, even if ugly, this was already used in one place, and was even more bogus. Fix it. Signed-off-by: Paolo 'Blaisorblade' Giarrusso Cc: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/include/kern_util.h | 4 +++- arch/um/include/user.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'arch/um/include') diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index 8f4e46d677a..c649108a9e9 100644 --- a/arch/um/include/kern_util.h +++ b/arch/um/include/kern_util.h @@ -120,8 +120,10 @@ extern void machine_halt(void); extern int is_syscall(unsigned long addr); extern void arch_switch(void); extern void free_irq(unsigned int, void *); -extern int um_in_interrupt(void); extern int cpu(void); + +/* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ +extern int __cant_sleep(void); extern void segv_handler(int sig, union uml_pt_regs *regs); extern void sigio_handler(int sig, union uml_pt_regs *regs); diff --git a/arch/um/include/user.h b/arch/um/include/user.h index 0f865ef4691..91b0ac4ad88 100644 --- a/arch/um/include/user.h +++ b/arch/um/include/user.h @@ -18,6 +18,7 @@ extern int open_gdb_chan(void); extern unsigned long strlcpy(char *, const char *, unsigned long); extern unsigned long strlcat(char *, const char *, unsigned long); extern void *um_vmalloc(int size); +extern void *um_vmalloc_atomic(int size); extern void vfree(void *ptr); #endif -- cgit v1.2.3