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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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83a0944fa9
Related to a shadowed variable bug fix Valdis Kletnieks noticed that perf does not get built with -Wshadow, which could have helped us avoid the bug. So enable -Wshadow and also enable the following warnings on perf builds, in addition to the already enabled -Wall -Wextra -std=gnu99 warnings: -Wcast-align -Wformat=2 -Wshadow -Winit-self -Wpacked -Wredundant-decls -Wstack-protector -Wstrict-aliasing=3 -Wswitch-default -Wswitch-enum -Wno-system-headers -Wundef -Wvolatile-register-var -Wwrite-strings -Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wstrict-prototypes -Wdeclaration-after-statement And change/fix the perf code to build cleanly under GCC 4.3.2. The list of warnings enablement is rather arbitrary: it's based on my (quick) reading of the GCC manpages and trying them on perf. I categorized the warnings based on individually enabling them and looking whether they trigger something in the perf build. If i liked those warnings (i.e. if they trigger for something that arguably could be improved) i enabled the warning. If the warnings seemed to come from language laywers spamming the build with tons of nuisance warnings i generally kept them off. Most of the sign conversion related warnings were in this category. (A second patch enabling some of the sign warnings might be welcome - sign bugs can be nasty.) I also kept warnings that seem to make sense from their manpage description and which produced no actual warnings on our code base. These warnings might still be turned off if they end up being a nuisance. I also left out a few warnings that are not supported in older compilers. [ Note that these changes might break the build on older compilers i did not test, or on non-x86 architectures that produce different warnings, so more testing would be welcome. ] Reported-by: Valdis.Kletnieks@vt.edu Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
121 lines
4.6 KiB
C
121 lines
4.6 KiB
C
#ifndef CACHE_H
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#define CACHE_H
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#include "util.h"
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#include "strbuf.h"
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#include "../perf.h"
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#define PERF_DIR_ENVIRONMENT "PERF_DIR"
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#define PERF_WORK_TREE_ENVIRONMENT "PERF_WORK_TREE"
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#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf"
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#define DB_ENVIRONMENT "PERF_OBJECT_DIRECTORY"
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#define INDEX_ENVIRONMENT "PERF_INDEX_FILE"
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#define GRAFT_ENVIRONMENT "PERF_GRAFT_FILE"
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#define TEMPLATE_DIR_ENVIRONMENT "PERF_TEMPLATE_DIR"
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#define CONFIG_ENVIRONMENT "PERF_CONFIG"
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#define EXEC_PATH_ENVIRONMENT "PERF_EXEC_PATH"
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#define CEILING_DIRECTORIES_ENVIRONMENT "PERF_CEILING_DIRECTORIES"
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#define PERFATTRIBUTES_FILE ".perfattributes"
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#define INFOATTRIBUTES_FILE "info/attributes"
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#define ATTRIBUTE_MACRO_PREFIX "[attr]"
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#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR"
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typedef int (*config_fn_t)(const char *, const char *, void *);
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extern int perf_default_config(const char *, const char *, void *);
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extern int perf_config_from_file(config_fn_t fn, const char *, void *);
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extern int perf_config(config_fn_t fn, void *);
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extern int perf_parse_ulong(const char *, unsigned long *);
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extern int perf_config_int(const char *, const char *);
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extern unsigned long perf_config_ulong(const char *, const char *);
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extern int perf_config_bool_or_int(const char *, const char *, int *);
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extern int perf_config_bool(const char *, const char *);
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extern int perf_config_string(const char **, const char *, const char *);
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extern int perf_config_set(const char *, const char *);
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extern int perf_config_set_multivar(const char *, const char *, const char *, int);
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extern int perf_config_rename_section(const char *, const char *);
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extern const char *perf_etc_perfconfig(void);
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extern int check_repository_format_version(const char *var, const char *value, void *cb);
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extern int perf_config_system(void);
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extern int perf_config_global(void);
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extern int config_error_nonbool(const char *);
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extern const char *config_exclusive_filename;
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#define MAX_PERFNAME (1000)
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extern char perf_default_email[MAX_PERFNAME];
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extern char perf_default_name[MAX_PERFNAME];
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extern int user_ident_explicitly_given;
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extern const char *perf_log_output_encoding;
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extern const char *perf_mailmap_file;
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/* IO helper functions */
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extern void maybe_flush_or_die(FILE *, const char *);
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extern int copy_fd(int ifd, int ofd);
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extern int copy_file(const char *dst, const char *src, int mode);
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extern ssize_t write_in_full(int fd, const void *buf, size_t count);
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extern void write_or_die(int fd, const void *buf, size_t count);
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extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
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extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
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extern void fsync_or_die(int fd, const char *);
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/* pager.c */
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extern void setup_pager(void);
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extern const char *pager_program;
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extern int pager_in_use(void);
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extern int pager_use_color;
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extern const char *editor_program;
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extern const char *excludes_file;
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char *alias_lookup(const char *alias);
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int split_cmdline(char *cmdline, const char ***argv);
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#define alloc_nr(x) (((x)+16)*3/2)
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/*
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* Realloc the buffer pointed at by variable 'x' so that it can hold
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* at least 'nr' entries; the number of entries currently allocated
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* is 'alloc', using the standard growing factor alloc_nr() macro.
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*
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* DO NOT USE any expression with side-effect for 'x' or 'alloc'.
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*/
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#define ALLOC_GROW(x, nr, alloc) \
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do { \
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if ((nr) > alloc) { \
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if (alloc_nr(alloc) < (nr)) \
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alloc = (nr); \
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else \
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alloc = alloc_nr(alloc); \
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x = xrealloc((x), alloc * sizeof(*(x))); \
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} \
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} while(0)
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static inline int is_absolute_path(const char *path)
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{
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return path[0] == '/';
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}
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const char *make_absolute_path(const char *path);
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const char *make_nonrelative_path(const char *path);
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const char *make_relative_path(const char *abs, const char *base);
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int normalize_path_copy(char *dst, const char *src);
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int longest_ancestor_length(const char *path, const char *prefix_list);
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char *strip_path_suffix(const char *path, const char *suffix);
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extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
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/* perf_mkstemp() - create tmp file honoring TMPDIR variable */
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extern int perf_mkstemp(char *path, size_t len, const char *template);
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extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
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__attribute__((format (printf, 3, 4)));
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extern char *perf_snpath(char *buf, size_t n, const char *fmt, ...)
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__attribute__((format (printf, 3, 4)));
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extern char *perf_pathdup(const char *fmt, ...)
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__attribute__((format (printf, 1, 2)));
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extern size_t strlcpy(char *dest, const char *src, size_t size);
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#endif /* CACHE_H */
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