diff options
| author |   Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-01-18 17:42:58 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-18 19:20:21 -0800 |
| commit | b63162939cd797c8269964ce856ed1f2fec5f70e (patch) | |
| tree | 666dd2919bd156aa183a87576224d0fad3c4cf72 /arch/um/include | |
| parent | [PATCH] uml: sigio code - reduce spinlock hold time (diff) | |
| download | linux-dev-b63162939cd797c8269964ce856ed1f2fec5f70e.tar.xz linux-dev-b63162939cd797c8269964ce856ed1f2fec5f70e.zip | |
[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.h | 4 | ||||
| -rw-r--r-- | arch/um/include/user.h | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index 8f4e46d677ab..c649108a9e9f 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 0f865ef46918..91b0ac4ad88c 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 |