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https://github.com/edk2-porting/linux-next.git
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3052ba56bc
We got the sane_ctype.h headers from git and kept using it so far, but since that code originally came from the kernel sources to the git sources, perhaps its better to just use the one in the kernel, so that we can leverage tools/perf/check_headers.sh to be notified when our copy gets out of sync, i.e. when fixes or goodies are added to the code we've copied. This will help with things like tools/lib/string.c where we want to have more things in common with the kernel, such as strim(), skip_spaces(), etc so as to go on removing the things that we have in tools/perf/util/ and instead using the code in the kernel, indirectly and removing things like EXPORT_SYMBOL(), etc, getting notified when fixes and improvements are made to the original code. Hopefully this also should help with reducing the difference of code hosted in tools/ to the one in the kernel proper. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-7k9868l713wqtgo01xxygn12@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
123 lines
3.4 KiB
C
123 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PROBE_FINDER_H
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#define _PROBE_FINDER_H
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#include <stdbool.h>
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#include "intlist.h"
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#include "probe-event.h"
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#include <linux/ctype.h>
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#define MAX_PROBE_BUFFER 1024
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#define MAX_PROBES 128
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#define MAX_PROBE_ARGS 128
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#define PROBE_ARG_VARS "$vars"
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#define PROBE_ARG_PARAMS "$params"
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static inline int is_c_varname(const char *name)
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{
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/* TODO */
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return isalpha(name[0]) || name[0] == '_';
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}
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#ifdef HAVE_DWARF_SUPPORT
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#include "dwarf-aux.h"
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/* TODO: export debuginfo data structure even if no dwarf support */
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/* debug information structure */
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struct debuginfo {
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Dwarf *dbg;
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Dwfl_Module *mod;
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Dwfl *dwfl;
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Dwarf_Addr bias;
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};
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/* This also tries to open distro debuginfo */
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struct debuginfo *debuginfo__new(const char *path);
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void debuginfo__delete(struct debuginfo *dbg);
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/* Find probe_trace_events specified by perf_probe_event from debuginfo */
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int debuginfo__find_trace_events(struct debuginfo *dbg,
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struct perf_probe_event *pev,
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struct probe_trace_event **tevs);
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/* Find a perf_probe_point from debuginfo */
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int debuginfo__find_probe_point(struct debuginfo *dbg, unsigned long addr,
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struct perf_probe_point *ppt);
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int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs,
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bool adjust_offset);
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/* Find a line range */
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int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr);
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/* Find available variables */
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int debuginfo__find_available_vars_at(struct debuginfo *dbg,
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struct perf_probe_event *pev,
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struct variable_list **vls);
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/* Find a src file from a DWARF tag path */
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int get_real_path(const char *raw_path, const char *comp_dir,
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char **new_path);
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struct probe_finder {
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struct perf_probe_event *pev; /* Target probe event */
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/* Callback when a probe point is found */
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int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf);
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/* For function searching */
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int lno; /* Line number */
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Dwarf_Addr addr; /* Address */
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const char *fname; /* Real file name */
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Dwarf_Die cu_die; /* Current CU */
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Dwarf_Die sp_die;
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struct intlist *lcache; /* Line cache for lazy match */
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/* For variable searching */
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#if _ELFUTILS_PREREQ(0, 142)
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/* Call Frame Information from .eh_frame */
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Dwarf_CFI *cfi_eh;
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/* Call Frame Information from .debug_frame */
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Dwarf_CFI *cfi_dbg;
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#endif
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Dwarf_Op *fb_ops; /* Frame base attribute */
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unsigned int machine; /* Target machine arch */
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struct perf_probe_arg *pvar; /* Current target variable */
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struct probe_trace_arg *tvar; /* Current result variable */
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};
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struct trace_event_finder {
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struct probe_finder pf;
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Dwfl_Module *mod; /* For solving symbols */
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struct probe_trace_event *tevs; /* Found trace events */
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int ntevs; /* Number of trace events */
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int max_tevs; /* Max number of trace events */
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};
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struct available_var_finder {
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struct probe_finder pf;
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Dwfl_Module *mod; /* For solving symbols */
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struct variable_list *vls; /* Found variable lists */
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int nvls; /* Number of variable lists */
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int max_vls; /* Max no. of variable lists */
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bool child; /* Search child scopes */
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};
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struct line_finder {
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struct line_range *lr; /* Target line range */
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const char *fname; /* File name */
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int lno_s; /* Start line number */
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int lno_e; /* End line number */
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Dwarf_Die cu_die; /* Current CU */
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Dwarf_Die sp_die;
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int found;
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};
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#endif /* HAVE_DWARF_SUPPORT */
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#endif /*_PROBE_FINDER_H */
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