From 37a25424252b6cff4dd4b1937ab6a1dbfcadabcc Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 16 Feb 2009 15:32:23 +0100 Subject: [PATCH] perfcounters: fix acpi_idle_do_entry() workaround Fix merge error in drivers/acpi/processor_idle.c. This resulted in non-working perfcounters on certain Nehalem systems. Signed-off-by: Ingo Molnar --- drivers/acpi/processor_idle.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 259f6e806314..08def2f20cd9 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -826,12 +826,9 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) { u64 perf_flags; - u64 pctrl; - /* Don't trace irqs off for idle */ stop_critical_timings(); perf_flags = hw_perf_save_disable(); - pctrl = hw_perf_save_disable(); if (cx->entry_method == ACPI_CSTATE_FFH) { /* Call into architectural FFH based C-state */ acpi_processor_ffh_cstate_enter(cx); @@ -847,7 +844,6 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) unused = inl(acpi_gbl_FADT.xpm_timer_block.address); } hw_perf_restore(perf_flags); - hw_perf_restore(pctrl); start_critical_timings(); } -- 2.34.1