From 17e77b1cc31454908aa286bb1db3c611295ce25c Mon Sep 17 00:00:00 2001 From: Venkatesh Pallipadi Date: Fri, 1 Dec 2006 15:28:14 -0800 Subject: [PATCH] Add support for type argument in PAL_GET_PSTATE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit PAL_GET_PSTATE accepts a type argument to return different kinds of frequency information. Refer: Intel Itanium®Architecture Software Developer's Manual - Volume 2: System Architecture, Revision 2.2 (http://developer.intel.com/design/itanium/manuals/245318.htm) Add the support for type argument and use Instantaneous frequency in the acpi driver. Also fix a bug, where in return value of PAL_GET_PSTATE was getting compared with 'control' bits instead of 'status' bits. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Tony Luck --- arch/ia64/kernel/cpufreq/acpi-cpufreq.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'arch/ia64/kernel') diff --git a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c index 86faf221a07..088f130197a 100644 --- a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c +++ b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c @@ -68,7 +68,8 @@ processor_get_pstate ( dprintk("processor_get_pstate\n"); - retval = ia64_pal_get_pstate(&pstate_index); + retval = ia64_pal_get_pstate(&pstate_index, + PAL_GET_PSTATE_TYPE_INSTANT); *value = (u32) pstate_index; if (retval) @@ -91,7 +92,7 @@ extract_clock ( dprintk("extract_clock\n"); for (i = 0; i < data->acpi_data.state_count; i++) { - if (value >= data->acpi_data.states[i].control) + if (value == data->acpi_data.states[i].status) return data->acpi_data.states[i].core_frequency; } return data->acpi_data.states[i-1].core_frequency; @@ -117,11 +118,7 @@ processor_get_freq ( goto migrate_end; } - /* - * processor_get_pstate gets the average frequency since the - * last get. So, do two PAL_get_freq()... - */ - ret = processor_get_pstate(&value); + /* processor_get_pstate gets the instantaneous frequency */ ret = processor_get_pstate(&value); if (ret) { -- cgit v1.2.3