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>

1 files changed, 69 insertions, 0 deletions

diff --git a/tools/perf/util/srcline.h b/tools/perf/util/srcline.h
new file mode 100644
index 000000000..1018cbc88
--- /dev/null
+++ b/tools/perf/util/srcline.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef PERF_SRCLINE_H
+#define PERF_SRCLINE_H
+
+#include <linux/list.h>
+#include <linux/rbtree.h>
+#include <linux/types.h>
+
+struct dso;
+struct symbol;
+
+extern bool srcline_full_filename;
+char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
+		  bool show_sym, bool show_addr, u64 ip);
+char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
+		  bool show_sym, bool show_addr, bool unwind_inlines,
+		  u64 ip);
+void zfree_srcline(char **srcline);
+char *get_srcline_split(struct dso *dso, u64 addr, unsigned *line);
+
+/* insert the srcline into the DSO, which will take ownership */
+void srcline__tree_insert(struct rb_root_cached *tree, u64 addr, char *srcline);
+/* find previously inserted srcline */
+char *srcline__tree_find(struct rb_root_cached *tree, u64 addr);
+/* delete all srclines within the tree */
+void srcline__tree_delete(struct rb_root_cached *tree);
+
+extern char *srcline__unknown;
+#define SRCLINE_UNKNOWN srcline__unknown
+
+#define MAX_INLINE_NEST 1024
+
+struct inline_list {
+	struct symbol		*symbol;
+	char			*srcline;
+	struct list_head	list;
+};
+
+struct inline_node {
+	u64			addr;
+	struct list_head	val;
+	struct rb_node		rb_node;
+};
+
+/* parse inlined frames for the given address */
+struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr,
+					    struct symbol *sym);
+/* free resources associated to the inline node list */
+void inline_node__delete(struct inline_node *node);
+void inline_node__clear_frames(struct inline_node *node);
+
+/* insert the inline node list into the DSO, which will take ownership */
+void inlines__tree_insert(struct rb_root_cached *tree,
+			  struct inline_node *inlines);
+/* find previously inserted inline node list */
+struct inline_node *inlines__tree_find(struct rb_root_cached *tree, u64 addr);
+/* delete all nodes within the tree of inline_node s */
+void inlines__tree_delete(struct rb_root_cached *tree);
+
+int inline_list__append(struct symbol *symbol, char *srcline, struct inline_node *node);
+int inline_list__append_tail(struct symbol *symbol, char *srcline, struct inline_node *node);
+char *srcline_from_fileline(const char *file, unsigned int line);
+struct symbol *new_inline_sym(struct dso *dso,
+			      struct symbol *base_sym,
+			      const char *funcname);
+
+int addr2line_configure(const char *var, const char *value, void *cb);
+
+#endif /* PERF_SRCLINE_H */