Jeremy Kerr f027faa231 powerpc/spufs: Don't spu_acquire_saved unnecessarily in regs read ... With most file readers (eg cat, dd), reading a context's regs file will result in two reads: the first to read the data, and the second to return EOF. Because each read performs a spu_acquire_saved, we end up descheduling and re-scheduling the context twice. This change does a simple check to see if we'd return EOF before calling spu_acquire_saved(), saving the extra schedule operation. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>		2008-10-21 11:13:43 +11:00
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.gitignore	[POWERPC] spufs: add .gitignore for spu_save_dump.h & spu_restore_dump.h	2008-04-30 16:29:30 +10:00
backing_ops.c	[POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl write	2008-02-08 19:52:35 +11:00
context.c	powerpc/spufs: avoid magic numbers for mapping sizes	2008-07-09 10:13:40 +10:00
coredump.c	[PATCH] split linux/file.h	2008-05-01 13:08:16 -04:00
fault.c	[POWERPC] spufs: fix concurrent delivery of class 0 & 1 exceptions	2008-05-05 13:33:44 +10:00
file.c	powerpc/spufs: Don't spu_acquire_saved unnecessarily in regs read	2008-10-21 11:13:43 +11:00
gang.c	[CELL] cell: add placement computation for scheduling of affinity contexts	2007-07-20 21:42:17 +02:00
hw_ops.c	[POWERPC] spufs: use #defines for SPU class [012] exception status	2007-12-21 19:46:20 +11:00
inode.c	Merge commit 'origin'	2008-10-15 11:31:54 +11:00
lscsa_alloc.c	[POWERPC] spufs: move fault, lscsa_alloc and switch code to spufs module	2007-12-21 19:46:19 +11:00
Makefile	[POWERPC] spufs: Add marker-based tracing facility	2008-02-06 16:26:59 +11:00
run.c	powerpc/spufs: Use state_mutex for switch_log locking, and prevent multiple openers	2008-10-21 11:13:19 +11:00
sched.c	powerpc/spufs: Fix possible scheduling of a context to multiple SPEs	2008-09-08 09:44:43 +10:00
spu_restore_crt0.S	[PATCH] spufs: add spu-side context switch code	2006-01-09 14:49:25 +11:00
spu_restore_dump.h_shipped	[CELL] spufs: change decrementer restore timing	2007-07-20 21:42:03 +02:00
spu_restore.c	[CELL] spufs: change decrementer restore timing	2007-07-20 21:42:03 +02:00
spu_save_crt0.S	[PATCH] spufs: add spu-side context switch code	2006-01-09 14:49:25 +11:00
spu_save_dump.h_shipped	[POWERPC] spufs: one more fix for 64k pages	2006-06-21 15:01:32 +10:00
spu_save.c	[POWERPC] spufs: fix building spufs/spu_save_dump.h	2007-07-03 15:24:44 +10:00
spu_utils.h	[PATCH] spufs: add spu-side context switch code	2006-01-09 14:49:25 +11:00
spufs.h	powerpc/spufs: Use state_mutex for switch_log locking, and prevent multiple openers	2008-10-21 11:13:19 +11:00
sputrace.c	powerpc/spufs: sputrace: Don't block until the read buffer is full	2008-10-21 11:13:07 +11:00
switch.c	[POWERPC] spufs: handle faults while the context switch pending flag is set	2008-05-05 13:33:44 +10:00
syscalls.c	Introduce path_put()	2008-02-14 21:13:33 -08:00