kernel.git/arch/blackfin/lib, branch linux-2.6.37.y

Blackfin: optimize strncpy a bit

2010-05-22T18:19:11Z

Add a little strncpy optimization which can easily cut boot time by 20%. When the kernel is booting with initramfs, it builds up the filesystem from a cpio archive by calling strncpy_from_user() via fs/namei.c's do_getname() on every file in the archive (which can be lots) with a length of PATH_MAX (1024). This causes the dest of the strncpy to be padded with many NUL bytes. This optimization mostly causes these NUL bytes to be padded with a call to memset() which is already optimized for filling memory quickly, but the hardware loop helps a little bit as well. Boot time measured with 'loglevel=0' so UART speed doesn't get in the way. Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger

Blackfin: move string functions to normal lib/ assembly

2010-05-22T18:19:09Z

Since 'extern inline' doesn't work correctly in the context of the Linux kernel (too many overriding defines), move the string functions to normal lib/ assembly files (like the existing mem funcs). This avoids the forced inline all over the kernel and allows us to place them constantly in L1. This also avoids some module failures when gcc inserts calls to string functions but the kernel build system doesn't fully consult the library archives. Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger

Blackfin: convert to generic checksum code

2009-12-15T05:13:32Z

The Blackfin port only implemented an optimized version of the csum_tcpudp_nofold function, so convert everything else to the new generic code. Signed-off-by: Mike Frysinger

Blackfin: mass clean up of copyright/licensing info

2009-10-07T08:36:26Z

Bill Gatliff & David Brownell pointed out we were missing some copyrights, and licensing terms in some of the files in ./arch/blackfin, so this fixes things, and cleans them up. It also removes: - verbose GPL text(refer to the top level ./COPYING file) - file names (you are looking at the file) - bug url (it's in the ./MAINTAINERS file) - "or later" on GPL-2, when we did not have that right It also allows some Blackfin-specific assembly files to be under a BSD like license (for people to use them outside of Linux). Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger

Blackfin: fix misnomer of some I-pipe helpers

2009-09-17T01:28:30Z

__ipipe_{stall, unstall}_root_raw() identifiers may leave the reader under the impression that only the virtual state is affected by these operations, which is wrong. Pick names following the convention used throughout the interrupt pipeline code. Signed-off-by: Philippe Gerum Signed-off-by: Mike Frysinger

Blackfin: fix miscompilation in lshrdi3

2009-07-16T05:52:23Z

The code used in the Blackfin lshrdi3 utilizes gcc constructs. However, the structures declared don't line up with the code gcc generates, so under certain optimizations, we get bad code and things crap out in fun random ways. So rather than trying to maintain different gcc definitions ourselves, just use the ones available in gcclib.h. URL: http://blackfin.uclinux.org/gf/tracker/5286 Signed-off-by: Jie Zhang Signed-off-by: Mike Frysinger

Blackfin: export ip_compute_csum/csum_partial_copy_from_user symbols

2009-06-13T11:20:06Z

All other arches do this, and some places like the net/scsi code will fail as modules without them. Signed-off-by: Mike Frysinger

Blackfin: fix strncmp.o build error

2009-05-27T04:27:05Z

Fix some more fallout of the string changes: CC arch/blackfin/lib/strncmp.o In file included from include/linux/bitmap.h:9, from include/linux/nodemask.h:90, from include/linux/mmzone.h:17, from include/linux/gfp.h:5, from include/linux/kmod.h:23, from include/linux/module.h:14, from arch/blackfin/lib/strncmp.c:14: include/linux/string.h: In function ‘strstarts’: include/linux/string.h:132: error: implicit declaration of function ‘strncmp’ make[1]: *** [arch/blackfin/lib/strncmp.o] Error 1 Signed-off-by: Mike Frysinger CC: Rusty Russell

Blackfin arch: cleanup and unify the ins functions

2009-01-07T15:14:38Z

this also fixes some errors in the ipipe merge Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu

Blackfin arch: merge adeos blackfin part to arch/blackfin/

2009-01-07T15:14:39Z

[Mike Frysinger : - handle bf531/bf532/bf534/bf536 variants in ipipe.h - cleanup IPIPE logic for bfin_set_irq_handler() - cleanup ipipe asm code a bit and add missing ENDPROC() - simplify IPIPE code in trap_c - unify some of the IPIPE code and fix style - simplify DO_IRQ_L1 handling with ipipe code - revert IRQ_SW_INT# addition from ipipe merge - remove duplicate get_{c,s}clk() prototypes ] Signed-off-by: Yi Li Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu