ftrace/trivial: Clean up recordmcount.c to use Linux style comparisons
The Linux ftrace subsystem style for comparing is: var == 1 var > 0 and not: 1 == var 0 < var It is considered that Linux developers are smart enough not to do the if (var = 1) mistake. Cc: John Reiser <jreiser@bitwagon.com> Link: http://lkml.kernel.org/r/20110421023737.290712238@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
Steven Rostedt
Родитель
449a66fd1f
Коммит
dd5477ff3b
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@ -78,7 +78,7 @@ static off_t
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ulseek(int const fd, off_t const offset, int const whence)
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{
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off_t const w = lseek(fd, offset, whence);
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if ((off_t)-1 == w) {
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if (w == (off_t)-1) {
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perror("lseek");
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fail_file();
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}
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@ -111,7 +111,7 @@ static void *
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umalloc(size_t size)
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{
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void *const addr = malloc(size);
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if (0 == addr) {
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if (addr == 0) {
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fprintf(stderr, "malloc failed: %zu bytes\n", size);
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fail_file();
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}
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@ -136,7 +136,7 @@ static void *mmap_file(char const *fname)
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void *addr;
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fd_map = open(fname, O_RDWR);
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if (0 > fd_map || 0 > fstat(fd_map, &sb)) {
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if (fd_map < 0 || fstat(fd_map, &sb) < 0) {
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perror(fname);
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fail_file();
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}
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@ -147,7 +147,7 @@ static void *mmap_file(char const *fname)
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addr = mmap(0, sb.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE,
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fd_map, 0);
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mmap_failed = 0;
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if (MAP_FAILED == addr) {
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if (addr == MAP_FAILED) {
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mmap_failed = 1;
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addr = umalloc(sb.st_size);
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uread(fd_map, addr, sb.st_size);
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@ -206,12 +206,12 @@ static uint32_t (*w2)(uint16_t);
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static int
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is_mcounted_section_name(char const *const txtname)
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{
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return 0 == strcmp(".text", txtname) ||
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0 == strcmp(".ref.text", txtname) ||
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0 == strcmp(".sched.text", txtname) ||
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0 == strcmp(".spinlock.text", txtname) ||
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0 == strcmp(".irqentry.text", txtname) ||
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0 == strcmp(".text.unlikely", txtname);
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return strcmp(".text", txtname) == 0 ||
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strcmp(".ref.text", txtname) == 0 ||
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strcmp(".sched.text", txtname) == 0 ||
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strcmp(".spinlock.text", txtname) == 0 ||
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strcmp(".irqentry.text", txtname) == 0 ||
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strcmp(".text.unlikely", txtname) == 0;
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}
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/* 32 bit and 64 bit are very similar */
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@ -270,7 +270,7 @@ do_file(char const *const fname)
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fail_file();
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} break;
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case ELFDATA2LSB: {
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if (1 != *(unsigned char const *)&endian) {
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if (*(unsigned char const *)&endian != 1) {
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/* main() is big endian, file.o is little endian. */
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w = w4rev;
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w2 = w2rev;
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@ -278,7 +278,7 @@ do_file(char const *const fname)
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}
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} break;
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case ELFDATA2MSB: {
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if (0 != *(unsigned char const *)&endian) {
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if (*(unsigned char const *)&endian != 0) {
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/* main() is little endian, file.o is big endian. */
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w = w4rev;
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w2 = w2rev;
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@ -286,9 +286,9 @@ do_file(char const *const fname)
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}
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} break;
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} /* end switch */
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if (0 != memcmp(ELFMAG, ehdr->e_ident, SELFMAG)
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|| ET_REL != w2(ehdr->e_type)
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|| EV_CURRENT != ehdr->e_ident[EI_VERSION]) {
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if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0
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|| w2(ehdr->e_type) != ET_REL
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|| ehdr->e_ident[EI_VERSION] != EV_CURRENT) {
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fprintf(stderr, "unrecognized ET_REL file %s\n", fname);
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fail_file();
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}
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@ -321,15 +321,15 @@ do_file(char const *const fname)
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fail_file();
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} break;
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case ELFCLASS32: {
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if (sizeof(Elf32_Ehdr) != w2(ehdr->e_ehsize)
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|| sizeof(Elf32_Shdr) != w2(ehdr->e_shentsize)) {
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if (w2(ehdr->e_ehsize) != sizeof(Elf32_Ehdr)
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|| w2(ehdr->e_shentsize) != sizeof(Elf32_Shdr)) {
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fprintf(stderr,
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"unrecognized ET_REL file: %s\n", fname);
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fail_file();
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}
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if (EM_S390 == w2(ehdr->e_machine))
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if (w2(ehdr->e_machine) == EM_S390)
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reltype = R_390_32;
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if (EM_MIPS == w2(ehdr->e_machine)) {
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if (w2(ehdr->e_machine) == EM_MIPS) {
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reltype = R_MIPS_32;
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is_fake_mcount32 = MIPS32_is_fake_mcount;
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}
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@ -337,15 +337,15 @@ do_file(char const *const fname)
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} break;
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case ELFCLASS64: {
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Elf64_Ehdr *const ghdr = (Elf64_Ehdr *)ehdr;
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if (sizeof(Elf64_Ehdr) != w2(ghdr->e_ehsize)
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|| sizeof(Elf64_Shdr) != w2(ghdr->e_shentsize)) {
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if (w2(ghdr->e_ehsize) != sizeof(Elf64_Ehdr)
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|| w2(ghdr->e_shentsize) != sizeof(Elf64_Shdr)) {
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fprintf(stderr,
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"unrecognized ET_REL file: %s\n", fname);
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fail_file();
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}
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if (EM_S390 == w2(ghdr->e_machine))
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if (w2(ghdr->e_machine) == EM_S390)
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reltype = R_390_64;
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if (EM_MIPS == w2(ghdr->e_machine)) {
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if (w2(ghdr->e_machine) == EM_MIPS) {
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reltype = R_MIPS_64;
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Elf64_r_sym = MIPS64_r_sym;
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Elf64_r_info = MIPS64_r_info;
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@ -371,7 +371,7 @@ main(int argc, char const *argv[])
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}
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/* Process each file in turn, allowing deep failure. */
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for (--argc, ++argv; 0 < argc; --argc, ++argv) {
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for (--argc, ++argv; argc > 0; --argc, ++argv) {
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int const sjval = setjmp(jmpenv);
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int len;
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@ -275,12 +275,12 @@ static uint_t *sift_rel_mcount(uint_t *mlocp,
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Elf_Sym const *const symp =
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&sym0[Elf_r_sym(relp)];
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char const *symname = &str0[w(symp->st_name)];
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char const *mcount = '_' == gpfx ? "_mcount" : "mcount";
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char const *mcount = gpfx == '_' ? "_mcount" : "mcount";
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if ('.' == symname[0])
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if (symname[0] == '.')
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++symname; /* ppc64 hack */
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if (0 == strcmp(mcount, symname) ||
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(altmcount && 0 == strcmp(altmcount, symname)))
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if (strcmp(mcount, symname) == 0 ||
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(altmcount && strcmp(altmcount, symname) == 0))
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mcountsym = Elf_r_sym(relp);
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}
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@ -290,7 +290,7 @@ static uint_t *sift_rel_mcount(uint_t *mlocp,
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mrelp->r_offset = _w(offbase
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+ ((void *)mlocp - (void *)mloc0));
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Elf_r_info(mrelp, recsym, reltype);
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if (sizeof(Elf_Rela) == rel_entsize) {
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if (rel_entsize == sizeof(Elf_Rela)) {
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((Elf_Rela *)mrelp)->r_addend = addend;
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*mlocp++ = 0;
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} else
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@ -354,12 +354,12 @@ __has_rel_mcount(Elf_Shdr const *const relhdr, /* is SHT_REL or SHT_RELA */
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Elf_Shdr const *const txthdr = &shdr0[w(relhdr->sh_info)];
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char const *const txtname = &shstrtab[w(txthdr->sh_name)];
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if (0 == strcmp("__mcount_loc", txtname)) {
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if (strcmp("__mcount_loc", txtname) == 0) {
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fprintf(stderr, "warning: __mcount_loc already exists: %s\n",
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fname);
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succeed_file();
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}
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if (SHT_PROGBITS != w(txthdr->sh_type) ||
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if (w(txthdr->sh_type) != SHT_PROGBITS ||
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!is_mcounted_section_name(txtname))
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return NULL;
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return txtname;
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@ -370,7 +370,7 @@ static char const *has_rel_mcount(Elf_Shdr const *const relhdr,
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char const *const shstrtab,
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char const *const fname)
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{
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if (SHT_REL != w(relhdr->sh_type) && SHT_RELA != w(relhdr->sh_type))
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if (w(relhdr->sh_type) != SHT_REL && w(relhdr->sh_type) != SHT_RELA)
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return NULL;
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return __has_rel_mcount(relhdr, shdr0, shstrtab, fname);
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}
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