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authorJames Bottomley <James.Bottomley@SteelEye.com>2006-06-27 02:53:49 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:38 -0700
commit96c52749036eca2b131f435d3895a3c6aba92e76 (patch)
tree77b92dfa86d4d81b3ee11f2517e118c6025026c6 /arch
parent4031ff388138b58e5cd472dccce38828bcb8c706 (diff)
downloadop-kernel-dev-96c52749036eca2b131f435d3895a3c6aba92e76.zip
op-kernel-dev-96c52749036eca2b131f435d3895a3c6aba92e76.tar.gz
[PATCH] fix subarchitecture breakage with CONFIG_SCHED_SMT
Commit 1e9f28fa1eb9773bf65bae08288c6a0a38eef4a7 ("[PATCH] sched: new sched domain for representing multi-core") incorrectly made SCHED_SMT and some of the structures it uses dependent on SMP. However, this is wrong, the structures are only defined if X86_HT, so SCHED_SMT has to depend on that as well. The patch broke voyager, since it doesn't provide any of the multi-core or hyperthreading structures. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/Kconfig4
-rw-r--r--arch/i386/kernel/cpu/common.c2
-rw-r--r--arch/i386/kernel/cpu/intel_cacheinfo.c6
3 files changed, 6 insertions, 6 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 47c08bc..6662f8c 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -233,7 +233,7 @@ config NR_CPUS
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
- depends on SMP
+ depends on X86_HT
help
SMT scheduler support improves the CPU scheduler's decision making
when dealing with Intel Pentium 4 chips with HyperThreading at a
@@ -242,7 +242,7 @@ config SCHED_SMT
config SCHED_MC
bool "Multi-core scheduler support"
- depends on SMP
+ depends on X86_HT
default y
help
Multi-core scheduler support improves the CPU scheduler's decision
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 2fa401f..70c87de 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -294,7 +294,7 @@ void __cpuinit generic_identify(struct cpuinfo_x86 * c)
if (c->x86 >= 0x6)
c->x86_model += ((tfms >> 16) & 0xF) << 4;
c->x86_mask = tfms & 15;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
c->apicid = phys_pkg_id((ebx >> 24) & 0xFF, 0);
#else
c->apicid = (ebx >> 24) & 0xFF;
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index f24a014..8a92642 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -261,7 +261,7 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
unsigned int cpu = (c == &boot_cpu_data) ? 0 : (c - cpu_data);
#endif
@@ -383,14 +383,14 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
if (new_l2) {
l2 = new_l2;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
cpu_llc_id[cpu] = l2_id;
#endif
}
if (new_l3) {
l3 = new_l3;
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_HT
cpu_llc_id[cpu] = l3_id;
#endif
}
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