[PATCH] MIPS: move __syscall_error into syscall stub

Ulrich Drepper drepper@redhat.com
Tue Mar 18 01:03:00 GMT 2003


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Guido Guenther wrote:
> Hi,
> the attached patch moves the __syscall_error code on linux mips for the
> __PIC__ case right behind the syscall stub itself saving the overhead of
> jumping to __syscall_error (with all the .cpload, etc.) and also making
> it unnecessary to pull in sysdep.S in linuxthreads (but enlarging glibc
> by about +8k). Is this optimation worthwhile? 

I'd say no.  First, icache misses are expensive and you'd increase the
probability.  Second, mips processors are used on systems where memory
usage is a key concern.

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