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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2006-01-18 17:42:58 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-18 19:20:21 -0800
commitb63162939cd797c8269964ce856ed1f2fec5f70e (patch)
tree666dd2919bd156aa183a87576224d0fad3c4cf72 /arch/um/include
parentb6a2b13778873bd9edd0b4a7d24a7bd730369021 (diff)
[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 <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/include')
-rw-r--r--arch/um/include/kern_util.h4
-rw-r--r--arch/um/include/user.h1
2 files changed, 4 insertions, 1 deletions
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