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| author | Anders Kaseorg <andersk@mit.edu> | 2008-12-05 19:03:58 -0500 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-03-31 13:05:32 +1030 |
| commit | 75a66614db21007bcc8c37f9c5d5b922981387b9 (patch) | |
| tree | d02c905a3aee02ec25ce38700f47d0fa57d2cbf7 /kernel/kallsyms.c | |
| parent | a6e6abd575fcbe6572ebc7a70ad616406d206fa8 (diff) | |
| download | lwn-75a66614db21007bcc8c37f9c5d5b922981387b9.tar.gz lwn-75a66614db21007bcc8c37f9c5d5b922981387b9.zip | |
Ksplice: Add functions for walking kallsyms symbols
Impact: New API
kallsyms_lookup_name only returns the first match that it finds. Ksplice
needs information about all symbols with a given name in order to correctly
resolve local symbols.
kallsyms_on_each_symbol provides a generic mechanism for iterating over the
kallsyms table.
Cc: Jeff Arnold <jbarnold@mit.edu>
Cc: Tim Abbott <tabbott@mit.edu>
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/kallsyms.c')
| -rw-r--r-- | kernel/kallsyms.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index 7b8b0f21a5b1..374faf9bfdc7 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -161,6 +161,25 @@ unsigned long kallsyms_lookup_name(const char *name) return module_kallsyms_lookup_name(name); } +int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, + unsigned long), + void *data) +{ + char namebuf[KSYM_NAME_LEN]; + unsigned long i; + unsigned int off; + int ret; + + for (i = 0, off = 0; i < kallsyms_num_syms; i++) { + off = kallsyms_expand_symbol(off, namebuf); + ret = fn(data, namebuf, NULL, kallsyms_addresses[i]); + if (ret != 0) + return ret; + } + return module_kallsyms_on_each_symbol(fn, data); +} +EXPORT_SYMBOL_GPL(kallsyms_on_each_symbol); + static unsigned long get_symbol_pos(unsigned long addr, unsigned long *symbolsize, unsigned long *offset) |