diff options
Diffstat (limited to 'arch/alpha/oprofile/op_model_ev6.c')
-rw-r--r-- | arch/alpha/oprofile/op_model_ev6.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/alpha/oprofile/op_model_ev6.c b/arch/alpha/oprofile/op_model_ev6.c deleted file mode 100644 index 02edf5971614..000000000000 --- a/arch/alpha/oprofile/op_model_ev6.c +++ /dev/null @@ -1,101 +0,0 @@ -/** - * @file arch/alpha/oprofile/op_model_ev6.c - * - * @remark Copyright 2002 OProfile authors - * @remark Read the file COPYING - * - * @author Richard Henderson <rth@twiddle.net> - */ - -#include <linux/oprofile.h> -#include <linux/smp.h> -#include <asm/ptrace.h> - -#include "op_impl.h" - - -/* Compute all of the registers in preparation for enabling profiling. */ - -static void -ev6_reg_setup(struct op_register_config *reg, - struct op_counter_config *ctr, - struct op_system_config *sys) -{ - unsigned long ctl, reset, need_reset, i; - - /* Select desired events. We've mapped the event numbers - such that they fit directly into the event selection fields. */ - ctl = 0; - if (ctr[0].enabled && ctr[0].event) - ctl |= (ctr[0].event & 1) << 4; - if (ctr[1].enabled) - ctl |= (ctr[1].event - 2) & 15; - reg->mux_select = ctl; - - /* Select logging options. */ - /* ??? Need to come up with some mechanism to trace only - selected processes. EV6 does not have a mechanism to - select kernel or user mode only. For now, enable always. */ - reg->proc_mode = 0; - - /* EV6 cannot change the width of the counters as with the - other implementations. But fortunately, we can write to - the counters and set the value such that it will overflow - at the right time. */ - reset = need_reset = 0; - for (i = 0; i < 2; ++i) { - unsigned long count = ctr[i].count; - if (!ctr[i].enabled) - continue; - - if (count > 0x100000) - count = 0x100000; - ctr[i].count = count; - reset |= (0x100000 - count) << (i ? 6 : 28); - if (count != 0x100000) - need_reset |= 1 << i; - } - reg->reset_values = reset; - reg->need_reset = need_reset; -} - -/* Program all of the registers in preparation for enabling profiling. */ - -static void -ev6_cpu_setup (void *x) -{ - struct op_register_config *reg = x; - - wrperfmon(2, reg->mux_select); - wrperfmon(3, reg->proc_mode); - wrperfmon(6, reg->reset_values | 3); -} - -/* CTR is a counter for which the user has requested an interrupt count - in between one of the widths selectable in hardware. Reset the count - for CTR to the value stored in REG->RESET_VALUES. */ - -static void -ev6_reset_ctr(struct op_register_config *reg, unsigned long ctr) -{ - wrperfmon(6, reg->reset_values | (1 << ctr)); -} - -static void -ev6_handle_interrupt(unsigned long which, struct pt_regs *regs, - struct op_counter_config *ctr) -{ - /* Record the sample. */ - oprofile_add_sample(regs, which); -} - - -struct op_axp_model op_model_ev6 = { - .reg_setup = ev6_reg_setup, - .cpu_setup = ev6_cpu_setup, - .reset_ctr = ev6_reset_ctr, - .handle_interrupt = ev6_handle_interrupt, - .cpu_type = "alpha/ev6", - .num_counters = 2, - .can_set_proc_mode = 0, -}; |