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| author | Jan Beulich <jbeulich@novell.com> | 2008-01-30 13:31:21 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:21 +0100 |
| commit | d88879b2d0225da3ba460bbdb8361bb049653671 (patch) | |
| tree | d9a0b8a215434eab6f29df389780dd73b427b8dd | |
| parent | bdb4f156064e5f627213af82292eb8b5cf2dc5aa (diff) | |
| download | blackbird-op-linux-d88879b2d0225da3ba460bbdb8361bb049653671.tar.gz blackbird-op-linux-d88879b2d0225da3ba460bbdb8361bb049653671.zip | |
x86-64: make pda's cpunumber and nodenumber unsigned
This generally allows better code to be generated, since the zero-
extension during 32-bit operations comes for free (needed when the
result is used as array index or similar), whereas sign extension must
be done explicitly and frequently requires a one byte larger
instruction due to the necessary rex64 prefix.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/asm-x86/pda.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-x86/pda.h b/include/asm-x86/pda.h index 3d9dd653628a..b620d0c39a93 100644 --- a/include/asm-x86/pda.h +++ b/include/asm-x86/pda.h @@ -15,14 +15,14 @@ struct x8664_pda { unsigned long kernelstack; /* 16 top of kernel stack for current */ unsigned long oldrsp; /* 24 user rsp for system call */ int irqcount; /* 32 Irq nesting counter. Starts with -1 */ - int cpunumber; /* 36 Logical CPU number */ + unsigned int cpunumber; /* 36 Logical CPU number */ #ifdef CONFIG_CC_STACKPROTECTOR unsigned long stack_canary; /* 40 stack canary value */ /* gcc-ABI: this canary MUST be at offset 40!!! */ #endif char *irqstackptr; - int nodenumber; /* number of current node */ + unsigned int nodenumber; /* number of current node */ unsigned int __softirq_pending; unsigned int __nmi_count; /* number of NMI on this CPUs */ short mmu_state; |
