From mboxrd@z Thu Jan 1 00:00:00 1970 From: jeremy.linton@arm.com (Jeremy Linton) Date: Sun, 13 Mar 2016 18:23:16 -0500 Subject: [PATCH 2/4] arm64: pmu: add fallback probe table In-Reply-To: <1457911398-22412-1-git-send-email-jeremy.linton@arm.com> References: <1457911398-22412-1-git-send-email-jeremy.linton@arm.com> Message-ID: <1457911398-22412-3-git-send-email-jeremy.linton@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Mark Salter In preparation for ACPI support, add a pmu_probe_info table to the arm_pmu_device_probe() call. This table gets used when probing in the absence of a devicetree node for PMU. Signed-off-by: Mark Salter --- arch/arm64/kernel/perf_event.c | 10 +++++++++- include/linux/perf/arm_pmu.h | 3 +++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 767c4f6..03e0957 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -901,9 +901,17 @@ static const struct of_device_id armv8_pmu_of_device_ids[] = { {}, }; +static const struct pmu_probe_info armv8_pmu_probe_table[] = { + ARMV8_PMU_PART_PROBE(ARM_CPU_PART_CORTEX_A53, armv8_a53_pmu_init), + ARMV8_PMU_PART_PROBE(ARM_CPU_PART_CORTEX_A57, armv8_a57_pmu_init), + PMU_PROBE(0, 0, armv8_pmuv3_init), /* if all else fails... */ + { /* sentinel value */ } +}; + static int armv8_pmu_device_probe(struct platform_device *pdev) { - return arm_pmu_device_probe(pdev, armv8_pmu_of_device_ids, NULL); + return arm_pmu_device_probe(pdev, armv8_pmu_of_device_ids, + armv8_pmu_probe_table); } static struct platform_driver armv8_pmu_driver = { diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 4196c90..495332f 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -145,6 +145,9 @@ struct pmu_probe_info { #define XSCALE_PMU_PROBE(_version, _fn) \ PMU_PROBE(ARM_CPU_IMP_INTEL << 24 | _version, ARM_PMU_XSCALE_MASK, _fn) +#define ARMV8_PMU_PART_PROBE(_part, _fn) \ + PMU_PROBE((_part) << MIDR_PARTNUM_SHIFT, MIDR_PARTNUM_MASK, _fn) + int arm_pmu_device_probe(struct platform_device *pdev, const struct of_device_id *of_table, const struct pmu_probe_info *probe_table); -- 2.4.3