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| author | Michael Ellerman <michael@ellerman.id.au> | 2009-01-19 11:31:00 +1100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@hobbes.lan> | 2009-03-19 19:29:26 -0700 |
| commit | 11df1f05514beaf0269484191007dbc8d47e0e6f (patch) | |
| tree | d4fce7438e5513d86b866c4890a38c0d437df76f /arch/x86 | |
| parent | b43d451385ef833e0696032aac2629da04d46c59 (diff) | |
| download | linux-stable-11df1f05514beaf0269484191007dbc8d47e0e6f.tar.gz linux-stable-11df1f05514beaf0269484191007dbc8d47e0e6f.tar.bz2 linux-stable-11df1f05514beaf0269484191007dbc8d47e0e6f.zip | |
PCI/MSI: Use #ifdefs instead of weak functions
Weak functions aren't all they're cracked up to be. They lead to
incorrect binaries with some toolchains, they require us to have empty
functions we otherwise wouldn't, and the unused code is not elided
(as of gcc 4.3.2 anyway).
So replace the weak MSI arch hooks with the #define foo foo idiom. We no
longer need empty versions of arch_setup/teardown_msi_irq().
This is less source (by 1 line!), and results in smaller binaries too:
text data bss dec hex filename
9354300 1693916 678424 11726640 b2ef30 build/powerpc/vmlinux-before
9354052 1693852 678424 11726328 b2edf8 build/powerpc/vmlinux-after
Also smaller on x86_64 and arm (iop13xx).
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index a977de23cb4d..a0301bfeb954 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -86,6 +86,9 @@ static inline void early_quirks(void) { } extern void pci_iommu_alloc(void); +/* MSI arch hook */ +#define arch_setup_msi_irqs arch_setup_msi_irqs + #endif /* __KERNEL__ */ #ifdef CONFIG_X86_32 |