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Commit dce9d18a authored by Steven Rostedt's avatar Steven Rostedt Committed by Ingo Molnar
Browse files

ftrace: handle generic arch calls 



The recordmcount script requires that the actual arch is passed in.
This works well when ARCH=i386 or ARCH=x86_64 but does not handle the
case of ARCH=x86.

This patch adds a parameter to the function to pass in the number of
bits of the architecture. So that it can determine if x86 should be
run for x86_64 or i386 archs.

Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 6ae2a076

scripts/Makefile.build

+8 −2
Original line number Diff line number Diff line
@@ -198,10 +198,16 @@ cmd_modversions = \ 
	fi;

endif



ifdef CONFIG_64BIT

arch_bits = 64

else

arch_bits = 32

endif



ifdef CONFIG_FTRACE_MCOUNT_RECORD

cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl \

	"$(ARCH)" "$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" \

	"$(MV)" "$(@)";

	"$(ARCH)" "$(arch_bits)" "$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" \

	"$(NM)" "$(RM)" "$(MV)" "$(@)";

endif



define rule_cc_o_c

scripts/recordmcount.pl

+10 −1
Original line number Diff line number Diff line
@@ -106,7 +106,8 @@ if ($#ARGV < 6) { 
	exit(1);

}



my ($arch, $objdump, $objcopy, $cc, $ld, $nm, $rm, $mv, $inputfile) = @ARGV;

my ($arch, $bits, $objdump, $objcopy, $cc,

    $ld, $nm, $rm, $mv, $inputfile) = @ARGV;



$objdump = "objdump" if ((length $objdump) == 0);

$objcopy = "objcopy" if ((length $objcopy) == 0);
@@ -129,6 +130,14 @@ my $function_regex; # Find the name of a function 
			#    (return offset and func name)

my $mcount_regex;	# Find the call site to mcount (return offset)



if ($arch eq "x86") {

    if ($bits == 64) {

	$arch = "x86_64";

    } else {

	$arch = "i386";

    }

}



if ($arch eq "x86_64") {

    $section_regex = "Disassembly of section";

    $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";