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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-05-13 12:07:51 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-05-23 13:51:35 +0300 |
| commit | 7ee3e97e00a3893e354c3993c3f7d9dc127e9c5e (patch) | |
| tree | 9cd913eb3e356b43d2a0839837b4fd0a6472917b /include/linux/kprobes.h | |
| parent | 6fcb574125e673f33ff058caa54b4e65629f3a08 (diff) | |
| download | linux-7ee3e97e00a3893e354c3993c3f7d9dc127e9c5e.tar.xz | |
kprobes: Allow architectures to override optinsn page allocation
Some architectures like powerpc require a non standard
allocation of optinsn page, because module pages are
too far from the kernel for direct branches.
Define weak alloc_optinsn_page() and free_optinsn_page(), that
fall back on alloc_insn_page() and free_insn_page() when not
overridden by the architecture.
Suggested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/40a43d6df1fdf41ade36e9a46e60a4df774ca9f6.1620896780.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'include/linux/kprobes.h')
| -rw-r--r-- | include/linux/kprobes.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 1883a4a9f16a..02d4020615a7 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -409,6 +409,9 @@ void dump_kprobe(struct kprobe *kp); void *alloc_insn_page(void); void free_insn_page(void *page); +void *alloc_optinsn_page(void); +void free_optinsn_page(void *page); + int kprobe_get_kallsym(unsigned int symnum, unsigned long *value, char *type, char *sym); |