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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-05-10 10:10:43 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2011-05-16 15:05:06 -0400 |
| commit | f29638868280534ed7e2fdd93b31557232597940 (patch) | |
| tree | df11bf6f18442c29b5c76566560e8874c040d9d4 | |
| parent | 521ccb5c4aece609311bfa7157910a8f0c942af5 (diff) | |
| download | linux-3.10-f29638868280534ed7e2fdd93b31557232597940.tar.gz linux-3.10-f29638868280534ed7e2fdd93b31557232597940.tar.bz2 linux-3.10-f29638868280534ed7e2fdd93b31557232597940.zip | |
ftrace/s390: mcount offset calculation
Do the mcount offset adjustment in the recordmcount.pl/recordmcount.[ch]
at compile time and not in ftrace_call_adjust at run time.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | arch/s390/include/asm/ftrace.h | 4 | ||||
| -rw-r--r-- | scripts/recordmcount.c | 8 | ||||
| -rwxr-xr-x | scripts/recordmcount.pl | 2 |
3 files changed, 9 insertions, 5 deletions
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h index 3c29be4836e..b7931faaef6 100644 --- a/arch/s390/include/asm/ftrace.h +++ b/arch/s390/include/asm/ftrace.h @@ -11,15 +11,13 @@ struct dyn_arch_ftrace { }; #ifdef CONFIG_64BIT #define MCOUNT_INSN_SIZE 12 -#define MCOUNT_OFFSET 8 #else #define MCOUNT_INSN_SIZE 20 -#define MCOUNT_OFFSET 4 #endif static inline unsigned long ftrace_call_adjust(unsigned long addr) { - return addr - MCOUNT_OFFSET; + return addr; } #endif /* __ASSEMBLY__ */ diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c index 7648a5d1115..ee52cb8e17a 100644 --- a/scripts/recordmcount.c +++ b/scripts/recordmcount.c @@ -368,8 +368,10 @@ do_file(char const *const fname) "unrecognized ET_REL file: %s\n", fname); fail_file(); } - if (w2(ehdr->e_machine) == EM_S390) + if (w2(ehdr->e_machine) == EM_S390) { reltype = R_390_32; + mcount_adjust_32 = -4; + } if (w2(ehdr->e_machine) == EM_MIPS) { reltype = R_MIPS_32; is_fake_mcount32 = MIPS32_is_fake_mcount; @@ -384,8 +386,10 @@ do_file(char const *const fname) "unrecognized ET_REL file: %s\n", fname); fail_file(); } - if (w2(ghdr->e_machine) == EM_S390) + if (w2(ghdr->e_machine) == EM_S390) { reltype = R_390_64; + mcount_adjust_64 = -8; + } if (w2(ghdr->e_machine) == EM_MIPS) { reltype = R_MIPS_64; Elf64_r_sym = MIPS64_r_sym; diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 414e7f5e42e..858966ab019 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -243,12 +243,14 @@ if ($arch eq "x86_64") { } elsif ($arch eq "s390" && $bits == 32) { $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_32\\s+_mcount\$"; + $mcount_adjust = -4; $alignment = 4; $ld .= " -m elf_s390"; $cc .= " -m31"; } elsif ($arch eq "s390" && $bits == 64) { $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$"; + $mcount_adjust = -8; $alignment = 8; $type = ".quad"; $ld .= " -m elf64_s390"; |