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由 Petr Mladek 提交于
The address of the to be patched function and new function is stored in struct klp_func as: void *new_func; unsigned long old_addr; The different naming scheme and type are derived from the way the addresses are set. @old_addr is assigned at runtime using kallsyms-based search. @new_func is statically initialized, for example: static struct klp_func funcs[] = { { .old_name = "cmdline_proc_show", .new_func = livepatch_cmdline_proc_show, }, { } }; This patch changes unsigned long old_addr -> void *old_func. It removes some confusion when these address are later used in the code. It is motivated by a followup patch that adds special NOP struct klp_func where we want to assign func->new_func = func->old_addr respectively func->new_func = func->old_func. This patch does not modify the existing behavior. Suggested-by: NJosh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: NPetr Mladek <pmladek@suse.com> Acked-by: NMiroslav Benes <mbenes@suse.cz> Acked-by: NJoe Lawrence <joe.lawrence@redhat.com> Acked-by: NAlice Ferrazzi <alice.ferrazzi@gmail.com> Acked-by: NJosh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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