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| author | Robert Richter <robert.richter@amd.com> | 2009-05-25 13:10:32 (GMT) |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2009-06-11 17:42:14 (GMT) |
| commit | 3370d358569755625aba4d9a846a040ce691d9ed (patch) | |
| tree | 97b712208843a33dd29d1bfd9f90bc8aec30a595 /arch/x86/oprofile/nmi_int.c | |
| parent | ef8828ddf828174785421af67c281144d4b8e796 (diff) | |
| download | linux-fsl-qoriq-3370d358569755625aba4d9a846a040ce691d9ed.tar.xz | |
x86/oprofile: replace macros to calculate control register
This patch introduces op_x86_get_ctrl() to calculate the value of the
performance control register. This is generic code usable for all
models. The event and reserved masks are model specific and stored in
struct op_x86_model_spec. 64 bit MSR functions are used now. The patch
removes many hard to read macros used for ctrl calculation.
The function op_x86_get_ctrl() is common code and the first step to
further merge performance counter implementations for x86 models.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile/nmi_int.c')
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index c31f87b..388ee15 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -31,6 +31,26 @@ static DEFINE_PER_CPU(unsigned long, saved_lvtpc); /* 0 == registered but off, 1 == registered and on */ static int nmi_enabled = 0; +/* common functions */ + +u64 op_x86_get_ctrl(struct op_x86_model_spec const *model, + struct op_counter_config *counter_config) +{ + u64 val = 0; + u16 event = (u16)counter_config->event; + + val |= ARCH_PERFMON_EVENTSEL_INT; + val |= counter_config->user ? ARCH_PERFMON_EVENTSEL_USR : 0; + val |= counter_config->kernel ? ARCH_PERFMON_EVENTSEL_OS : 0; + val |= (counter_config->unit_mask & 0xFF) << 8; + event &= model->event_mask ? model->event_mask : 0xFF; + val |= event & 0xFF; + val |= (event & 0x0F00) << 24; + + return val; +} + + static int profile_exceptions_notify(struct notifier_block *self, unsigned long val, void *data) { |