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ANDROID: android: Create debug_symbols driver

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Introduce new API to expose symbols useful for debugging the GKI kernel.
Symbols exported from this driver would be difficult to maintain via the
traditional EXPORT_SYMBOL_GPL.

Bug: 199236943
Change-Id: I1cadb409289ca9ce36b0084efc9ac46f6bec6741
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Yogesh Lal <ylal@codeaurora.org>
This commit is contained in:
Prasad Sodagudi
2020-10-28 18:26:21 -07:00
committed by Yogesh Lal
parent 5acb9c2a7b
commit b2df67a932
5 changed files with 246 additions and 0 deletions
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16
kernel/module.c
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@@ -4785,6 +4785,22 @@ void print_modules(void)
pr_cont("\n");
}
#ifdef CONFIG_ANDROID_DEBUG_SYMBOLS
void android_debug_for_each_module(int (*fn)(const char *mod_name, void *mod_addr, void *data),
void *data)
{
struct module *module;
preempt_disable();
list_for_each_entry_rcu(module, &modules, list) {
if (fn(module->name, module->core_layout.base, data))
goto out;
}
out:
preempt_enable();
}
EXPORT_SYMBOL_NS_GPL(android_debug_for_each_module, MINIDUMP);
#endif
#ifdef CONFIG_MODVERSIONS
/*
* Generate the signature for all relevant module structures here.