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authorRalf Baechle <ralf@linux-mips.org>2007-07-10 17:33:02 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-07-10 17:33:02 +0100
commitd223a86154f8c66f5a380b17e1c8091d56f47cf8 (patch)
tree97155684a16f2fe1477653b49aec152bcea6cd41 /arch/mips/kernel/traps.c
parente7c4782f92fc4b83d953ce53f77f05ae65dcd773 (diff)
downloadlinux-d223a86154f8c66f5a380b17e1c8091d56f47cf8.tar.bz2
[MIPS] FP affinity: Coding style cleanups
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/traps.c')
-rw-r--r--arch/mips/kernel/traps.c59
1 files changed, 29 insertions, 30 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 7e9cb5b1b4a7..c598e890a880 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -752,6 +752,33 @@ asmlinkage void do_ri(struct pt_regs *regs)
force_sig(SIGILL, current);
}
+/*
+ * MIPS MT processors may have fewer FPU contexts than CPU threads. If we've
+ * emulated more than some threshold number of instructions, force migration to
+ * a "CPU" that has FP support.
+ */
+static void mt_ase_fp_affinity(void)
+{
+#ifdef CONFIG_MIPS_MT_FPAFF
+ if (mt_fpemul_threshold > 0 &&
+ ((current->thread.emulated_fp++ > mt_fpemul_threshold))) {
+ /*
+ * If there's no FPU present, or if the application has already
+ * restricted the allowed set to exclude any CPUs with FPUs,
+ * we'll skip the procedure.
+ */
+ if (cpus_intersects(current->cpus_allowed, mt_fpu_cpumask)) {
+ cpumask_t tmask;
+
+ cpus_and(tmask, current->thread.user_cpus_allowed,
+ mt_fpu_cpumask);
+ set_cpus_allowed(current, tmask);
+ current->thread.mflags |= MF_FPUBOUND;
+ }
+ }
+#endif /* CONFIG_MIPS_MT_FPAFF */
+}
+
asmlinkage void do_cpu(struct pt_regs *regs)
{
unsigned int cpid;
@@ -785,36 +812,8 @@ asmlinkage void do_cpu(struct pt_regs *regs)
&current->thread.fpu, 0);
if (sig)
force_sig(sig, current);
-#ifdef CONFIG_MIPS_MT_FPAFF
- else {
- /*
- * MIPS MT processors may have fewer FPU contexts
- * than CPU threads. If we've emulated more than
- * some threshold number of instructions, force
- * migration to a "CPU" that has FP support.
- */
- if(mt_fpemul_threshold > 0
- && ((current->thread.emulated_fp++
- > mt_fpemul_threshold))) {
- /*
- * If there's no FPU present, or if the
- * application has already restricted
- * the allowed set to exclude any CPUs
- * with FPUs, we'll skip the procedure.
- */
- if (cpus_intersects(current->cpus_allowed,
- mt_fpu_cpumask)) {
- cpumask_t tmask;
-
- cpus_and(tmask,
- current->thread.user_cpus_allowed,
- mt_fpu_cpumask);
- set_cpus_allowed(current, tmask);
- current->thread.mflags |= MF_FPUBOUND;
- }
- }
- }
-#endif /* CONFIG_MIPS_MT_FPAFF */
+ else
+ mt_ase_fp_affinity();
}
return;