linux

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[SPARC64]: Niagara optimized memset/bzero/clear_user. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-02-21 14:29:42 -08:00







[SPARC64]: Fix inconsistent .section usage in lib/ A few places missed the "a" specifier for the __ex_table section. Add these so we avoid generation an additional section at link time. Latest modpost would otherwise complain like this: WARNING: vmlinux.o (__ex_table.2): section name inconsistency. (.[number]+) following section name. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. WARNING: vmlinux.o (__ex_table.4): section name inconsistency. (.[number]+) following section name. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net> 2008-01-31 16:48:49 -08:00
[SPARC64]: Niagara optimized memset/bzero/clear_user. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-02-21 14:29:42 -08:00
sparc64: Kill .fixup section bloat. This is an implementation of a suggestion made by Chris Torek: -------------------- Something else I noticed in passing: the EX and EX_LD/EX_ST macros scattered throughout the various .S files make a fair bit of .fixup code, all of which does the same thing. At the cost of one symbol in copy_in_user.S, you could just have one common two-instruction retl-and-mov-1 fixup that they all share. -------------------- The following is with a defconfig build: text data bss dec hex filename 3972767 344024 584449 4901240 4ac978 vmlinux.orig 3968887 344024 584449 4897360 4aba50 vmlinux Signed-off-by: David S. Miller <davem@davemloft.net> 2009-02-08 22:00:55 -08:00
[SPARC64]: Niagara optimized memset/bzero/clear_user. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-02-21 14:29:42 -08:00










































































[SPARC64]: store-init needs trailing membar. The manual says that it is required and we actually have crash reports where loads see stale data due to not having membars here. In one case the networking does: memset(skb, 0, offsetof(struct sk_buff, truesize)); and then some code later checks skb->nohdr for zero, but it's still the value that was there before the memset(). Note that arch/sparc64/lib/xor.S already got this right. Signed-off-by: David S. Miller <davem@davemloft.net> 2007-03-19 13:27:33 -07:00
[SPARC64]: Niagara optimized memset/bzero/clear_user. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-02-21 14:29:42 -08:00




































































[SPARC64]: Optimized TSB table initialization. We only need to write an invalid tag every 16 bytes, so taking advantage of this can save many instructions compared to the simple memset() call we make now. A prefetching implementation is implemented for sun4u and a block-init store version if implemented for Niagara. The next trick is to be able to perform an init and a copy_tsb() in parallel when growing a TSB table. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-03-18 23:55:11 -08:00
[SPARC64]: Niagara optimized memset/bzero/clear_user. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-02-21 14:29:42 -08:00

160 lines 3.3 KiB Raw Normal View History

160 lines

3.3 KiB

Raw Normal View History