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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2010-05-03 05:28:58 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2010-05-03 05:28:58 +0200 |
| commit | df2071bd081408318d659cd14a9cf6ff23d874c9 (patch) | |
| tree | b31291b5fd4b9f84c629833afbfaa8d431857475 /arch/blackfin/kernel/ftrace-entry.S | |
| parent | padata: Dont scale the parallel objects with the cpus (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 (diff) | |
| download | linux-df2071bd081408318d659cd14a9cf6ff23d874c9.tar.xz linux-df2071bd081408318d659cd14a9cf6ff23d874c9.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/blackfin/kernel/ftrace-entry.S')
| -rw-r--r-- | arch/blackfin/kernel/ftrace-entry.S | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/ftrace-entry.S b/arch/blackfin/kernel/ftrace-entry.S index 76dd4fbcd17a..d66446b572c0 100644 --- a/arch/blackfin/kernel/ftrace-entry.S +++ b/arch/blackfin/kernel/ftrace-entry.S @@ -1,7 +1,7 @@ /* * mcount and friends -- ftrace stuff * - * Copyright (C) 2009 Analog Devices Inc. + * Copyright (C) 2009-2010 Analog Devices Inc. * Licensed under the GPL-2 or later. */ @@ -21,6 +21,15 @@ * function will be waiting there. mmmm pie. */ ENTRY(__mcount) +#ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST + /* optional micro optimization: return if stopped */ + p1.l = _function_trace_stop; + p1.h = _function_trace_stop; + r3 = [p1]; + cc = r3 == 0; + if ! cc jump _ftrace_stub (bp); +#endif + /* save third function arg early so we can do testing below */ [--sp] = r2; @@ -106,9 +115,12 @@ ENTRY(_ftrace_graph_caller) [--sp] = r1; [--sp] = rets; - /* prepare_ftrace_return(unsigned long *parent, unsigned long self_addr) */ - r0 = sp; - r1 = rets; + /* prepare_ftrace_return(parent, self_addr, frame_pointer) */ + r0 = sp; /* unsigned long *parent */ + r1 = rets; /* unsigned long self_addr */ +#ifdef CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST + r2 = fp; /* unsigned long frame_pointer */ +#endif r0 += 16; /* skip the 4 local regs on stack */ r1 += -MCOUNT_INSN_SIZE; call _prepare_ftrace_return; @@ -127,6 +139,9 @@ ENTRY(_return_to_handler) [--sp] = r1; /* get original return address */ +#ifdef CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST + r0 = fp; /* Blackfin is sane, so omit this */ +#endif call _ftrace_return_to_handler; rets = r0; |