mirror of https://gitee.com/openkylin/linux.git
kernel/kallsyms.c: replace deprecated __initcall with device_initcall and fix whitespace
Fix coding style whitespace issues and replace __initcall with device_initcall. Fixed multi-line comments as per coding style. Errors as reported by checkpatch.pl :- Before: total: 14 errors, 14 warnings, 487 lines checked After : total: 0 errors, 8 warnings, 507 lines checked Compile tested binary verified as :- Before: text data bss dec hex filename 2405 4 0 2409 969 kernel/kallsyms.o After : text data bss dec hex filename 2405 4 0 2409 969 kernel/kallsyms.o Signed-off-by: Manish Katiyar <mkatiyar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Manish Katiyar
Sam Ravnborg
parent
12122f6232
commit
ad6ccfad6f
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@ -30,12 +30,16 @@
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#define all_var 0
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#endif
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/* These will be re-linked against their real values during the second link stage */
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/*
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* These will be re-linked against their real values
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* during the second link stage.
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*/
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extern const unsigned long kallsyms_addresses[] __attribute__((weak));
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extern const u8 kallsyms_names[] __attribute__((weak));
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/* tell the compiler that the count isn't in the small data section if the arch
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* has one (eg: FRV)
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/*
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* Tell the compiler that the count isn't in the small data section if the arch
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* has one (eg: FRV).
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*/
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extern const unsigned long kallsyms_num_syms
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__attribute__((weak, section(".rodata")));
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@ -75,31 +79,37 @@ static int is_ksym_addr(unsigned long addr)
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return is_kernel_text(addr) || is_kernel_inittext(addr);
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}
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/* expand a compressed symbol data into the resulting uncompressed string,
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given the offset to where the symbol is in the compressed stream */
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/*
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* Expand a compressed symbol data into the resulting uncompressed string,
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* given the offset to where the symbol is in the compressed stream.
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*/
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static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
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{
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int len, skipped_first = 0;
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const u8 *tptr, *data;
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/* get the compressed symbol length from the first symbol byte */
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/* Get the compressed symbol length from the first symbol byte. */
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data = &kallsyms_names[off];
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len = *data;
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data++;
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/* update the offset to return the offset for the next symbol on
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* the compressed stream */
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/*
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* Update the offset to return the offset for the next symbol on
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* the compressed stream.
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*/
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off += len + 1;
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/* for every byte on the compressed symbol data, copy the table
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entry for that byte */
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while(len) {
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tptr = &kallsyms_token_table[ kallsyms_token_index[*data] ];
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/*
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* For every byte on the compressed symbol data, copy the table
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* entry for that byte.
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*/
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while (len) {
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tptr = &kallsyms_token_table[kallsyms_token_index[*data]];
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data++;
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len--;
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while (*tptr) {
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if(skipped_first) {
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if (skipped_first) {
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*result = *tptr;
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result++;
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} else
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@ -110,36 +120,46 @@ static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
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*result = '\0';
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/* return to offset to the next symbol */
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/* Return to offset to the next symbol. */
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return off;
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}
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/* get symbol type information. This is encoded as a single char at the
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* begining of the symbol name */
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/*
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* Get symbol type information. This is encoded as a single char at the
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* beginning of the symbol name.
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*/
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static char kallsyms_get_symbol_type(unsigned int off)
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{
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/* get just the first code, look it up in the token table, and return the
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* first char from this token */
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return kallsyms_token_table[ kallsyms_token_index[ kallsyms_names[off+1] ] ];
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/*
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* Get just the first code, look it up in the token table,
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* and return the first char from this token.
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*/
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return kallsyms_token_table[kallsyms_token_index[kallsyms_names[off + 1]]];
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}
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/* find the offset on the compressed stream given and index in the
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* kallsyms array */
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/*
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* Find the offset on the compressed stream given and index in the
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* kallsyms array.
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*/
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static unsigned int get_symbol_offset(unsigned long pos)
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{
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const u8 *name;
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int i;
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/* use the closest marker we have. We have markers every 256 positions,
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* so that should be close enough */
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name = &kallsyms_names[ kallsyms_markers[pos>>8] ];
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/*
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* Use the closest marker we have. We have markers every 256 positions,
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* so that should be close enough.
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*/
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name = &kallsyms_names[kallsyms_markers[pos >> 8]];
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/* sequentially scan all the symbols up to the point we're searching for.
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* Every symbol is stored in a [<len>][<len> bytes of data] format, so we
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* just need to add the len to the current pointer for every symbol we
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* wish to skip */
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for(i = 0; i < (pos&0xFF); i++)
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/*
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* Sequentially scan all the symbols up to the point we're searching
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* for. Every symbol is stored in a [<len>][<len> bytes of data] format,
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* so we just need to add the len to the current pointer for every
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* symbol we wish to skip.
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*/
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for (i = 0; i < (pos & 0xFF); i++)
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name = name + (*name) + 1;
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return name - kallsyms_names;
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@ -190,7 +210,7 @@ static unsigned long get_symbol_pos(unsigned long addr,
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/* This kernel should never had been booted. */
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BUG_ON(!kallsyms_addresses);
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/* do a binary search on the sorted kallsyms_addresses array */
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/* Do a binary search on the sorted kallsyms_addresses array. */
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low = 0;
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high = kallsyms_num_syms;
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@ -203,15 +223,15 @@ static unsigned long get_symbol_pos(unsigned long addr,
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}
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/*
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* search for the first aliased symbol. Aliased
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* symbols are symbols with the same address
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* Search for the first aliased symbol. Aliased
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* symbols are symbols with the same address.
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*/
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while (low && kallsyms_addresses[low-1] == kallsyms_addresses[low])
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--low;
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symbol_start = kallsyms_addresses[low];
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/* Search for next non-aliased symbol */
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/* Search for next non-aliased symbol. */
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for (i = low + 1; i < kallsyms_num_syms; i++) {
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if (kallsyms_addresses[i] > symbol_start) {
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symbol_end = kallsyms_addresses[i];
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@ -219,7 +239,7 @@ static unsigned long get_symbol_pos(unsigned long addr,
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}
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}
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/* if we found no next symbol, we use the end of the section */
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/* If we found no next symbol, we use the end of the section. */
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if (!symbol_end) {
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if (is_kernel_inittext(addr))
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symbol_end = (unsigned long)_einittext;
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@ -252,10 +272,10 @@ int kallsyms_lookup_size_offset(unsigned long addr, unsigned long *symbolsize,
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/*
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* Lookup an address
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* - modname is set to NULL if it's in the kernel
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* - we guarantee that the returned name is valid until we reschedule even if
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* it resides in a module
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* - we also guarantee that modname will be valid until rescheduled
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* - modname is set to NULL if it's in the kernel.
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* - We guarantee that the returned name is valid until we reschedule even if.
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* It resides in a module.
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* - We also guarantee that modname will be valid until rescheduled.
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*/
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const char *kallsyms_lookup(unsigned long addr,
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unsigned long *symbolsize,
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@ -276,7 +296,7 @@ const char *kallsyms_lookup(unsigned long addr,
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return namebuf;
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}
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/* see if it's in a module */
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/* See if it's in a module. */
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return module_address_lookup(addr, symbolsize, offset, modname,
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namebuf);
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}
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@ -294,7 +314,7 @@ int lookup_symbol_name(unsigned long addr, char *symname)
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kallsyms_expand_symbol(get_symbol_offset(pos), symname);
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return 0;
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}
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/* see if it's in a module */
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/* See if it's in a module. */
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return lookup_module_symbol_name(addr, symname);
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}
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@ -313,7 +333,7 @@ int lookup_symbol_attrs(unsigned long addr, unsigned long *size,
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modname[0] = '\0';
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return 0;
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}
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/* see if it's in a module */
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/* See if it's in a module. */
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return lookup_module_symbol_attrs(addr, size, offset, modname, name);
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}
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@ -342,6 +362,7 @@ int sprint_symbol(char *buffer, unsigned long address)
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return len;
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}
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EXPORT_SYMBOL_GPL(sprint_symbol);
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/* Look up a kernel symbol and print it to the kernel messages. */
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void __print_symbol(const char *fmt, unsigned long address)
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@ -352,13 +373,13 @@ void __print_symbol(const char *fmt, unsigned long address)
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printk(fmt, buffer);
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}
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EXPORT_SYMBOL(__print_symbol);
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/* To avoid using get_symbol_offset for every symbol, we carry prefix along. */
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struct kallsym_iter
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{
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struct kallsym_iter {
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loff_t pos;
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unsigned long value;
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unsigned int nameoff; /* If iterating in core kernel symbols */
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unsigned int nameoff; /* If iterating in core kernel symbols. */
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char type;
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char name[KSYM_NAME_LEN];
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char module_name[MODULE_NAME_LEN];
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@ -404,7 +425,7 @@ static int update_iter(struct kallsym_iter *iter, loff_t pos)
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iter->pos = pos;
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return get_ksymbol_mod(iter);
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}
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/* If we're not on the desired position, reset to new position. */
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if (pos != iter->pos)
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reset_iter(iter, pos);
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@ -439,23 +460,25 @@ static int s_show(struct seq_file *m, void *p)
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{
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struct kallsym_iter *iter = m->private;
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/* Some debugging symbols have no name. Ignore them. */
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/* Some debugging symbols have no name. Ignore them. */
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if (!iter->name[0])
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return 0;
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if (iter->module_name[0]) {
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char type;
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/* Label it "global" if it is exported,
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* "local" if not exported. */
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/*
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* Label it "global" if it is exported,
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* "local" if not exported.
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*/
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type = iter->exported ? toupper(iter->type) :
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tolower(iter->type);
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seq_printf(m, "%0*lx %c %s\t[%s]\n",
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(int)(2*sizeof(void*)),
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(int)(2 * sizeof(void *)),
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iter->value, type, iter->name, iter->module_name);
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} else
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seq_printf(m, "%0*lx %c %s\n",
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(int)(2*sizeof(void*)),
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(int)(2 * sizeof(void *)),
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iter->value, iter->type, iter->name);
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return 0;
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}
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@ -469,9 +492,11 @@ static const struct seq_operations kallsyms_op = {
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static int kallsyms_open(struct inode *inode, struct file *file)
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{
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/* We keep iterator in m->private, since normal case is to
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/*
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* We keep iterator in m->private, since normal case is to
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* s_start from where we left off, so we avoid doing
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* using get_symbol_offset for every symbol */
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* using get_symbol_offset for every symbol.
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*/
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struct kallsym_iter *iter;
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int ret;
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@ -500,7 +525,4 @@ static int __init kallsyms_init(void)
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proc_create("kallsyms", 0444, NULL, &kallsyms_operations);
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return 0;
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}
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__initcall(kallsyms_init);
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EXPORT_SYMBOL(__print_symbol);
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EXPORT_SYMBOL_GPL(sprint_symbol);
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device_initcall(kallsyms_init);
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