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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /tools/perf/util/debuginfo.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'tools/perf/util/debuginfo.c')
-rw-r--r--tools/perf/util/debuginfo.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/tools/perf/util/debuginfo.c b/tools/perf/util/debuginfo.c
new file mode 100644
index 000000000..84a78b30c
--- /dev/null
+++ b/tools/perf/util/debuginfo.c
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DWARF debug information handling code. Copied from probe-finder.c.
+ *
+ * Written by Masami Hiramatsu <mhiramat@redhat.com>
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <linux/zalloc.h>
+
+#include "build-id.h"
+#include "dso.h"
+#include "debug.h"
+#include "debuginfo.h"
+#include "symbol.h"
+
+#ifdef HAVE_DEBUGINFOD_SUPPORT
+#include <elfutils/debuginfod.h>
+#endif
+
+/* Dwarf FL wrappers */
+static char *debuginfo_path; /* Currently dummy */
+
+static const Dwfl_Callbacks offline_callbacks = {
+ .find_debuginfo = dwfl_standard_find_debuginfo,
+ .debuginfo_path = &debuginfo_path,
+
+ .section_address = dwfl_offline_section_address,
+
+ /* We use this table for core files too. */
+ .find_elf = dwfl_build_id_find_elf,
+};
+
+/* Get a Dwarf from offline image */
+static int debuginfo__init_offline_dwarf(struct debuginfo *dbg,
+ const char *path)
+{
+ GElf_Addr dummy;
+ int fd;
+ bool fd_consumed = false;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return fd;
+
+ dbg->dwfl = dwfl_begin(&offline_callbacks);
+ if (!dbg->dwfl)
+ goto error;
+
+ dwfl_report_begin(dbg->dwfl);
+ dbg->mod = dwfl_report_offline(dbg->dwfl, "", "", fd);
+ if (!dbg->mod)
+ goto error;
+ fd_consumed = true;
+
+ dbg->dbg = dwfl_module_getdwarf(dbg->mod, &dbg->bias);
+ if (!dbg->dbg)
+ goto error;
+
+ dwfl_module_build_id(dbg->mod, &dbg->build_id, &dummy);
+
+ if (dwfl_report_end(dbg->dwfl, NULL, NULL) != 0)
+ goto error;
+
+ return 0;
+error:
+ if (dbg->dwfl)
+ dwfl_end(dbg->dwfl);
+ if (!fd_consumed)
+ close(fd);
+ memset(dbg, 0, sizeof(*dbg));
+
+ return -ENOENT;
+}
+
+static struct debuginfo *__debuginfo__new(const char *path)
+{
+ struct debuginfo *dbg = zalloc(sizeof(*dbg));
+ if (!dbg)
+ return NULL;
+
+ if (debuginfo__init_offline_dwarf(dbg, path) < 0)
+ zfree(&dbg);
+ if (dbg)
+ pr_debug("Open Debuginfo file: %s\n", path);
+ return dbg;
+}
+
+struct debuginfo *debuginfo__new(const char *path)
+{
+ static const enum dso_binary_type distro_dwarf_types[] = {
+ DSO_BINARY_TYPE__FEDORA_DEBUGINFO,
+ DSO_BINARY_TYPE__UBUNTU_DEBUGINFO,
+ DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO,
+ DSO_BINARY_TYPE__BUILDID_DEBUGINFO,
+ DSO_BINARY_TYPE__MIXEDUP_UBUNTU_DEBUGINFO,
+ DSO_BINARY_TYPE__NOT_FOUND,
+ };
+ const enum dso_binary_type *type;
+ char buf[PATH_MAX], nil = '\0';
+ struct dso *dso;
+ struct debuginfo *dinfo = NULL;
+ struct build_id bid = { .size = 0};
+
+ /* Try to open distro debuginfo files */
+ dso = dso__new(path);
+ if (!dso)
+ goto out;
+
+ /*
+ * Set the build id for DSO_BINARY_TYPE__BUILDID_DEBUGINFO. Don't block
+ * incase the path isn't for a regular file.
+ */
+ assert(!dso__has_build_id(dso));
+ if (filename__read_build_id(path, &bid) > 0)
+ dso__set_build_id(dso, &bid);
+
+ for (type = distro_dwarf_types;
+ !dinfo && *type != DSO_BINARY_TYPE__NOT_FOUND;
+ type++) {
+ if (dso__read_binary_type_filename(dso, *type, &nil,
+ buf, PATH_MAX) < 0)
+ continue;
+ dinfo = __debuginfo__new(buf);
+ }
+ dso__put(dso);
+
+out:
+ if (dinfo)
+ return dinfo;
+
+ /* if failed to open all distro debuginfo, open given binary */
+ symbol__join_symfs(buf, path);
+ return __debuginfo__new(buf);
+}
+
+void debuginfo__delete(struct debuginfo *dbg)
+{
+ if (dbg) {
+ if (dbg->dwfl)
+ dwfl_end(dbg->dwfl);
+ free(dbg);
+ }
+}
+
+/* For the kernel module, we need a special code to get a DIE */
+int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs,
+ bool adjust_offset)
+{
+ int n, i;
+ Elf32_Word shndx;
+ Elf_Scn *scn;
+ Elf *elf;
+ GElf_Shdr mem, *shdr;
+ const char *p;
+
+ elf = dwfl_module_getelf(dbg->mod, &dbg->bias);
+ if (!elf)
+ return -EINVAL;
+
+ /* Get the number of relocations */
+ n = dwfl_module_relocations(dbg->mod);
+ if (n < 0)
+ return -ENOENT;
+ /* Search the relocation related .text section */
+ for (i = 0; i < n; i++) {
+ p = dwfl_module_relocation_info(dbg->mod, i, &shndx);
+ if (p && strcmp(p, ".text") == 0) {
+ /* OK, get the section header */
+ scn = elf_getscn(elf, shndx);
+ if (!scn)
+ return -ENOENT;
+ shdr = gelf_getshdr(scn, &mem);
+ if (!shdr)
+ return -ENOENT;
+ *offs = shdr->sh_addr;
+ if (adjust_offset)
+ *offs -= shdr->sh_offset;
+ }
+ }
+ return 0;
+}
+
+#ifdef HAVE_DEBUGINFOD_SUPPORT
+int get_source_from_debuginfod(const char *raw_path,
+ const char *sbuild_id, char **new_path)
+{
+ debuginfod_client *c = debuginfod_begin();
+ const char *p = raw_path;
+ int fd;
+
+ if (!c)
+ return -ENOMEM;
+
+ fd = debuginfod_find_source(c, (const unsigned char *)sbuild_id,
+ 0, p, new_path);
+ pr_debug("Search %s from debuginfod -> %d\n", p, fd);
+ if (fd >= 0)
+ close(fd);
+ debuginfod_end(c);
+ if (fd < 0) {
+ pr_debug("Failed to find %s in debuginfod (%s)\n",
+ raw_path, sbuild_id);
+ return -ENOENT;
+ }
+ pr_debug("Got a source %s\n", *new_path);
+
+ return 0;
+}
+#endif /* HAVE_DEBUGINFOD_SUPPORT */