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| author |   David S. Miller <davem@davemloft.net> | 2009-09-10 07:09:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-10 07:09:06 -0700 |
| commit | 91b9286d819b821fd742c0053fe0748818374198 (patch) | |
| tree | 681f74f971241a06a3db0e0604a99a938469dadd /arch/sparc | |
| parent | sparc64: Initial hw perf counter support. (diff) | |
| download | linux-dev-91b9286d819b821fd742c0053fe0748818374198.tar.xz linux-dev-91b9286d819b821fd742c0053fe0748818374198.zip | |
sparc64: Provide hypervisor tracing bit support for perf counters.
A PMU need only specify which bit in the PCR enabled hypervisor
tracing in order to enable this.
This will be used in Niagara-2 perf counter support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/perf_counter.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/sparc/kernel/perf_counter.c b/arch/sparc/kernel/perf_counter.c index f2c781450d08..d86009fa6f8d 100644 --- a/arch/sparc/kernel/perf_counter.c +++ b/arch/sparc/kernel/perf_counter.c @@ -77,6 +77,7 @@ struct sparc_pmu { int upper_shift; int lower_shift; int event_mask; + int hv_bit; }; static const struct perf_event_map ultra3i_perfmon_event_map[] = { @@ -178,7 +179,7 @@ void hw_perf_disable(void) cpuc->enabled = 0; val = pcr_ops->read(); - val &= ~(PCR_UTRACE | PCR_STRACE); + val &= ~(PCR_UTRACE | PCR_STRACE | sparc_pmu->hv_bit); pcr_ops->write(val); } @@ -377,6 +378,8 @@ static int __hw_perf_counter_init(struct perf_counter *counter) hwc->config_base |= PCR_UTRACE; if (!attr->exclude_kernel) hwc->config_base |= PCR_STRACE; + if (!attr->exclude_hv) + hwc->config_base |= sparc_pmu->hv_bit; if (!hwc->sample_period) { hwc->sample_period = MAX_PERIOD; |