diff options
-rw-r--r-- | arch/x86/kernel/cpu/perf_event.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 1342f236e32a..18f05eccbb62 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c | |||
@@ -2066,12 +2066,6 @@ static __init int p6_pmu_init(void) | |||
2066 | 2066 | ||
2067 | x86_pmu = p6_pmu; | 2067 | x86_pmu = p6_pmu; |
2068 | 2068 | ||
2069 | if (!cpu_has_apic) { | ||
2070 | pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n"); | ||
2071 | pr_info("no hardware sampling interrupt available.\n"); | ||
2072 | x86_pmu.apic = 0; | ||
2073 | } | ||
2074 | |||
2075 | return 0; | 2069 | return 0; |
2076 | } | 2070 | } |
2077 | 2071 | ||
@@ -2163,6 +2157,16 @@ static __init int amd_pmu_init(void) | |||
2163 | return 0; | 2157 | return 0; |
2164 | } | 2158 | } |
2165 | 2159 | ||
2160 | static void __init pmu_check_apic(void) | ||
2161 | { | ||
2162 | if (cpu_has_apic) | ||
2163 | return; | ||
2164 | |||
2165 | x86_pmu.apic = 0; | ||
2166 | pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n"); | ||
2167 | pr_info("no hardware sampling interrupt available.\n"); | ||
2168 | } | ||
2169 | |||
2166 | void __init init_hw_perf_events(void) | 2170 | void __init init_hw_perf_events(void) |
2167 | { | 2171 | { |
2168 | int err; | 2172 | int err; |
@@ -2184,6 +2188,8 @@ void __init init_hw_perf_events(void) | |||
2184 | return; | 2188 | return; |
2185 | } | 2189 | } |
2186 | 2190 | ||
2191 | pmu_check_apic(); | ||
2192 | |||
2187 | pr_cont("%s PMU driver.\n", x86_pmu.name); | 2193 | pr_cont("%s PMU driver.\n", x86_pmu.name); |
2188 | 2194 | ||
2189 | if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) { | 2195 | if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) { |