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Diffstat (limited to 'arch/alpha/oprofile/op_model_ev4.c')
-rw-r--r--arch/alpha/oprofile/op_model_ev4.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/arch/alpha/oprofile/op_model_ev4.c b/arch/alpha/oprofile/op_model_ev4.c
deleted file mode 100644
index 086a0d5445c5..000000000000
--- a/arch/alpha/oprofile/op_model_ev4.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/**
- * @file arch/alpha/oprofile/op_model_ev4.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
-ev4_reg_setup(struct op_register_config *reg,
- struct op_counter_config *ctr,
- struct op_system_config *sys)
-{
- unsigned long ctl = 0, count, hilo;
-
- /* Select desired events. We've mapped the event numbers
- such that they fit directly into the event selection fields.
-
- Note that there is no "off" setting. In both cases we select
- the EXTERNAL event source, hoping that it'll be the lowest
- frequency, and set the frequency counter to LOW. The interrupts
- for these "disabled" counter overflows are ignored by the
- interrupt handler.
-
- This is most irritating, because the hardware *can* enable and
- disable the interrupts for these counters independently, but the
- wrperfmon interface doesn't allow it. */
-
- ctl |= (ctr[0].enabled ? ctr[0].event << 8 : 14 << 8);
- ctl |= (ctr[1].enabled ? (ctr[1].event - 16) << 32 : 7ul << 32);
-
- /* EV4 can not read or write its counter registers. The only
- thing one can do at all is see if you overflow and get an
- interrupt. We can set the width of the counters, to some
- extent. Take the interrupt count selected by the user,
- map it onto one of the possible values, and write it back. */
-
- count = ctr[0].count;
- if (count <= 4096)
- count = 4096, hilo = 1;
- else
- count = 65536, hilo = 0;
- ctr[0].count = count;
- ctl |= (ctr[0].enabled && hilo) << 3;
-
- count = ctr[1].count;
- if (count <= 256)
- count = 256, hilo = 1;
- else
- count = 4096, hilo = 0;
- ctr[1].count = count;
- ctl |= (ctr[1].enabled && hilo);
-
- reg->mux_select = ctl;
-
- /* Select performance monitoring options. */
- /* ??? Need to come up with some mechanism to trace only
- selected processes. EV4 does not have a mechanism to
- select kernel or user mode only. For now, enable always. */
- reg->proc_mode = 0;
-
- /* Frequency is folded into mux_select for EV4. */
- reg->freq = 0;
-
- /* See above regarding no writes. */
- reg->reset_values = 0;
- reg->need_reset = 0;
-
-}
-
-/* Program all of the registers in preparation for enabling profiling. */
-
-static void
-ev4_cpu_setup(void *x)
-{
- struct op_register_config *reg = x;
-
- wrperfmon(2, reg->mux_select);
- wrperfmon(3, reg->proc_mode);
-}
-
-static void
-ev4_handle_interrupt(unsigned long which, struct pt_regs *regs,
- struct op_counter_config *ctr)
-{
- /* EV4 can't properly disable counters individually.
- Discard "disabled" events now. */
- if (!ctr[which].enabled)
- return;
-
- /* Record the sample. */
- oprofile_add_sample(regs, which);
-}
-
-
-struct op_axp_model op_model_ev4 = {
- .reg_setup = ev4_reg_setup,
- .cpu_setup = ev4_cpu_setup,
- .reset_ctr = NULL,
- .handle_interrupt = ev4_handle_interrupt,
- .cpu_type = "alpha/ev4",
- .num_counters = 2,
- .can_set_proc_mode = 0,
-};