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| author | Jeremy Fitzhardinge <jeremy@xensource.com> | 2007-07-17 18:37:07 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-07-18 08:47:45 -0700 |
| commit | 6487673b8a858f99a5348e1078b3f5aec700f9e0 (patch) | |
| tree | 2c96da8fde879561f36678691ef997f3fdb7b3f0 /arch/i386/xen/xen-ops.h | |
| parent | 60223a326fc8fa6e90e2c3fd28ae6de4a311d731 (diff) | |
| download | lwn-6487673b8a858f99a5348e1078b3f5aec700f9e0.tar.gz lwn-6487673b8a858f99a5348e1078b3f5aec700f9e0.zip | |
xen: Attempt to patch inline versions of common operations
This patchs adds the mechanism to allow us to patch inline versions of
common operations.
The implementations of the direct-access versions save_fl, restore_fl,
irq_enable and irq_disable are now in assembler, and the same code is
used for both out of line and inline uses.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'arch/i386/xen/xen-ops.h')
| -rw-r--r-- | arch/i386/xen/xen-ops.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/i386/xen/xen-ops.h b/arch/i386/xen/xen-ops.h index 5b56f7fecd19..33e4c8a16289 100644 --- a/arch/i386/xen/xen-ops.h +++ b/arch/i386/xen/xen-ops.h @@ -54,4 +54,17 @@ int xen_smp_call_function_single(int cpu, void (*func) (void *info), void *info, int xen_smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info, int wait); + +/* Declare an asm function, along with symbols needed to make it + inlineable */ +#define DECL_ASM(ret, name, ...) \ + ret name(__VA_ARGS__); \ + extern char name##_end[]; \ + extern char name##_reloc[] \ + +DECL_ASM(void, xen_irq_enable_direct, void); +DECL_ASM(void, xen_irq_disable_direct, void); +DECL_ASM(unsigned long, xen_save_fl_direct, void); +DECL_ASM(void, xen_restore_fl_direct, unsigned long); + #endif /* XEN_OPS_H */ |