On Wed, Jan 08, 2014 at 10:59:40PM +0000, Stephen Boyd wrote: > Add basic support for the Krait CPU PMU. This allows us to use > the architected functionality of the PMU. > > This is based on code originally written by Ashwin Chaugule and > Neil Leeder [1]. > > [1] https://www.codeaurora.org/cgit/quic/la/kernel/msm/tree/arch/arm/kernel/perf_event_msm_krait.c?h=msm-3.4 > > Cc: Neil Leeder <nleeder@xxxxxxxxxxxxxx> > Cc: Ashwin Chaugule <ashwinc@xxxxxxxxxxxxxx> > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> > --- > arch/arm/kernel/perf_event_cpu.c | 1 + > arch/arm/kernel/perf_event_v7.c | 165 +++++++++++++++++++++++++++++++++++++++ > 2 files changed, 166 insertions(+) [...] > +static int krait_pmu_init(struct arm_pmu *cpu_pmu) > +{ > + u32 id = read_cpuid_id() & 0xffffff00; > + > + armv7pmu_init(cpu_pmu); > + cpu_pmu->name = "ARMv7 Krait"; > + /* Some early versions of Krait don't support PC write events */ > + if (id == 0x511f0400 || id == 0x510f0600) > + cpu_pmu->map_event = krait_map_event_no_branch; Hmm, I'd really rather this information came via the DT. In fact, you could just drop the branch event from your main map_event_function and keep things simple. It depends how badly you want to advertise it in perf list :) Will -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
