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| author | Danilo Krummrich <dakr@kernel.org> | 2026-08-13 18:52:04 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-08-17 01:41:36 +0200 |
| commit | f146c7bc85a51f95c05e0f8173d484eb301ece78 (patch) | |
| tree | 07296ae54ed6551492b0c609dc0f5463f61f89ca /tools/perf/util/intel-pt.h | |
| download | linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.tar.gz linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.zip | |
PCI: Add pci_irq_type() to query the allocated interrupt typegrafted
Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX
based on the interrupt type the PCI core selected after
pci_alloc_irq_vectors().
Several drivers already open-code this check against pdev->msix_enabled
and pdev->msi_enabled, or even open code this helper [1].
A common helper avoids the duplication and keeps drivers from accessing
the bitfield directly (see also [2]).
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1]
Inspired-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org
[ Add missing pci_irq_type() stub for CONFIG_PCI=n. ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'tools/perf/util/intel-pt.h')
| -rw-r--r-- | tools/perf/util/intel-pt.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tools/perf/util/intel-pt.h b/tools/perf/util/intel-pt.h new file mode 100644 index 000000000..18fd0be52 --- /dev/null +++ b/tools/perf/util/intel-pt.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * intel_pt.h: Intel Processor Trace support + * Copyright (c) 2013-2015, Intel Corporation. + */ + +#ifndef INCLUDE__PERF_INTEL_PT_H__ +#define INCLUDE__PERF_INTEL_PT_H__ + +#define INTEL_PT_PMU_NAME "intel_pt" + +enum { + INTEL_PT_PMU_TYPE, + INTEL_PT_TIME_SHIFT, + INTEL_PT_TIME_MULT, + INTEL_PT_TIME_ZERO, + INTEL_PT_CAP_USER_TIME_ZERO, + INTEL_PT_TSC_BIT, + INTEL_PT_NORETCOMP_BIT, + INTEL_PT_HAVE_SCHED_SWITCH, + INTEL_PT_SNAPSHOT_MODE, + INTEL_PT_PER_CPU_MMAPS, + INTEL_PT_MTC_BIT, + INTEL_PT_MTC_FREQ_BITS, + INTEL_PT_TSC_CTC_N, + INTEL_PT_TSC_CTC_D, + INTEL_PT_CYC_BIT, + INTEL_PT_MAX_NONTURBO_RATIO, + INTEL_PT_FILTER_STR_LEN, + INTEL_PT_AUXTRACE_PRIV_MAX, +}; + +struct auxtrace_record; +struct perf_tool; +union perf_event; +struct perf_session; +struct perf_event_attr; +struct perf_pmu; + +struct auxtrace_record *intel_pt_recording_init(int *err); + +int intel_pt_process_auxtrace_info(union perf_event *event, + struct perf_session *session); + +void intel_pt_pmu_default_config(const struct perf_pmu *intel_pt_pmu, + struct perf_event_attr *attr); + +#endif |