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| author | Steven Rostedt <srostedt@redhat.com> | 2008-11-15 08:39:05 +0100 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2008-11-20 19:52:53 +0100 |
| commit | 7cc45e64323c8a1042f56e6a8d1dc982f98d52a8 (patch) | |
| tree | 4402eb9bdaca4087a92f5003cfa655e6293dc890 /arch/powerpc/kernel/module_32.c | |
| parent | powerpc/ppc64: ftrace, handle module trampolines for dyn ftrace (diff) | |
| download | linux-7cc45e64323c8a1042f56e6a8d1dc982f98d52a8.tar.xz linux-7cc45e64323c8a1042f56e6a8d1dc982f98d52a8.zip | |
powerpc/ppc32: ftrace, dynamic ftrace to handle modules
Impact: add ability to trace modules on 32 bit PowerPC
This patch performs the necessary trampoline calls to handle
modules with dynamic ftrace on 32 bit PowerPC.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'arch/powerpc/kernel/module_32.c')
| -rw-r--r-- | arch/powerpc/kernel/module_32.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c index 2df91a03462a..f832773fc28e 100644 --- a/arch/powerpc/kernel/module_32.c +++ b/arch/powerpc/kernel/module_32.c @@ -22,6 +22,7 @@ #include <linux/fs.h> #include <linux/string.h> #include <linux/kernel.h> +#include <linux/ftrace.h> #include <linux/cache.h> #include <linux/bug.h> #include <linux/sort.h> @@ -53,6 +54,9 @@ static unsigned int count_relocs(const Elf32_Rela *rela, unsigned int num) r_addend = rela[i].r_addend; } +#ifdef CONFIG_DYNAMIC_FTRACE + _count_relocs++; /* add one for ftrace_caller */ +#endif return _count_relocs; } @@ -306,5 +310,11 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, return -ENOEXEC; } } +#ifdef CONFIG_DYNAMIC_FTRACE + module->arch.tramp = + do_plt_call(module->module_core, + (unsigned long)ftrace_caller, + sechdrs, module); +#endif return 0; } |