From 0da85c09b44bfea07e63ed5324aabc7cfc8a889a Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 12 Nov 2008 20:11:47 +0900 Subject: sh: dynamic ftrace support. First cut at dynamic ftrace support. [ Steven Rostedt - only updated the recordmcount.pl file. There are updates for PowerPC that will conflict with this, and we need to base off of these changes. ] Signed-off-by: Matt Fleming Signed-off-by: Paul Mundt Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- scripts/recordmcount.pl | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index eeac71c87c66..9f75438f65e2 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -170,6 +170,17 @@ if ($arch eq "x86_64") { $objcopy .= " -O elf32-i386"; $cc .= " -m32"; +} elsif ($arch eq "sh") { + $section_regex = "Disassembly of section\\s+(\\S+):"; + $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; + $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; + $type = ".long"; + + # force flags for this arch + $ld .= " -m shlelf_linux"; + $objcopy .= " -O elf32-sh-linux"; + $cc .= " -m32"; + } else { die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD"; } -- cgit v1.2.3 From 42e007d0400155fbc12c5344c808889e6ae33d32 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 20 Nov 2008 07:16:16 -0800 Subject: ftrace: add support for powerpc to recordmcount.pl script Impact: Add PowerPC port to recordmcount.pl script This patch updates the recordmcount.pl script to process PowerPC. Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- scripts/recordmcount.pl | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 9f75438f65e2..7ec032e3c3fa 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -130,6 +130,7 @@ my %weak; # List of weak functions my %convert; # List of local functions used that needs conversion my $type; +my $nm_regex; # Find the local functions (return function) my $section_regex; # Find the start of a section my $function_regex; # Find the name of a function # (return offset and func name) @@ -145,6 +146,7 @@ if ($arch eq "x86") { } if ($arch eq "x86_64") { + $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount([+-]0x[0-9a-zA-Z]+)?\$"; @@ -158,6 +160,7 @@ if ($arch eq "x86_64") { $cc .= " -m64"; } elsif ($arch eq "i386") { + $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; @@ -171,6 +174,7 @@ if ($arch eq "x86_64") { $cc .= " -m32"; } elsif ($arch eq "sh") { + $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; @@ -181,6 +185,17 @@ if ($arch eq "x86_64") { $objcopy .= " -O elf32-sh-linux"; $cc .= " -m32"; +} elsif ($arch eq "powerpc") { + $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)"; + $section_regex = "Disassembly of section\\s+(\\S+):"; + $function_regex = "^([0-9a-fA-F]+)\\s+<(\\.?.*?)>:"; + $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s\\.?_mcount\$"; + if ($bits == 64) { + $type = ".quad"; + } else { + $type = ".long"; + } + } else { die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD"; } @@ -250,7 +265,7 @@ if (!$found_version) { # open (IN, "$nm $inputfile|") || die "error running $nm"; while () { - if (/^[0-9a-fA-F]+\s+t\s+(\S+)/) { + if (/$nm_regex/) { $locals{$1} = 1; } elsif (/^[0-9a-fA-F]+\s+([wW])\s+(\S+)/) { $weak{$2} = $1; @@ -302,7 +317,7 @@ sub update_funcs open(FILE, ">$mcount_s") || die "can't create $mcount_s\n"; $opened = 1; print FILE "\t.section $mcount_section,\"a\",\@progbits\n"; - print FILE "\t.align $alignment\n"; + print FILE "\t.align $alignment\n" if (defined($alignment)); } printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset; } -- cgit v1.2.3 From c204f7264c7de85aecd3638dc8fe07aba6d1fff5 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 20 Nov 2008 15:07:34 -0500 Subject: ftrace: create default variables for archs in recordmcount.pl Impact: cleanup of recordmcount.pl Now that more architectures are being ported to the MCOUNT_RECORD method, there is no reason to have each declare their own arch specific variable if most of them share the same value. This patch creates a set of default values for the arch specific variables based off of i386. Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- scripts/recordmcount.pl | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 7ec032e3c3fa..c5c58ac90c04 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -145,10 +145,17 @@ if ($arch eq "x86") { } } +# +# We base the defaults off of i386, the other archs may +# feel free to change them in the below if statements. +# +$nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; +$section_regex = "Disassembly of section\\s+(\\S+):"; +$function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; +$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; +$type = ".long"; + if ($arch eq "x86_64") { - $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; - $section_regex = "Disassembly of section\\s+(\\S+):"; - $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount([+-]0x[0-9a-zA-Z]+)?\$"; $type = ".quad"; $alignment = 8; @@ -160,11 +167,6 @@ if ($arch eq "x86_64") { $cc .= " -m64"; } elsif ($arch eq "i386") { - $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; - $section_regex = "Disassembly of section\\s+(\\S+):"; - $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; - $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; - $type = ".long"; $alignment = 4; # force flags for this arch @@ -174,11 +176,6 @@ if ($arch eq "x86_64") { $cc .= " -m32"; } elsif ($arch eq "sh") { - $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; - $section_regex = "Disassembly of section\\s+(\\S+):"; - $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; - $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; - $type = ".long"; # force flags for this arch $ld .= " -m shlelf_linux"; @@ -187,13 +184,11 @@ if ($arch eq "x86_64") { } elsif ($arch eq "powerpc") { $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)"; - $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(\\.?.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s\\.?_mcount\$"; + if ($bits == 64) { $type = ".quad"; - } else { - $type = ".long"; } } else { -- cgit v1.2.3 From 3a3d04aed05add2247ea2ba5da5f90dba4062f3f Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Thu, 20 Nov 2008 21:49:52 +0000 Subject: ftrace: specify $alignment for sh architecture Impact: extend scripts/recordmcount.pl with default alignment for SH Set $alignment=2 for the sh architecture so that a ".align 2" directive will be emitted for all __mcount_loc sections. Fix a whitspace error while I'm here (converted spaces to tabs). Signed-off-by: Matt Fleming Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- scripts/recordmcount.pl | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index c5c58ac90c04..03b6af1388ea 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -135,7 +135,7 @@ my $section_regex; # Find the start of a section 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) -my $alignment; # The .align value to use for $mcount_section +my $alignment; # The .align value to use for $mcount_section if ($arch eq "x86") { if ($bits == 64) { @@ -176,6 +176,7 @@ if ($arch eq "x86_64") { $cc .= " -m32"; } elsif ($arch eq "sh") { + $alignment = 2; # force flags for this arch $ld .= " -m shlelf_linux"; -- cgit v1.2.3 From e58918ab9d4cd375f6d842e6d88cf4d7a55cbfcc Mon Sep 17 00:00:00 2001 From: Jim Radford Date: Thu, 20 Nov 2008 19:48:39 -0800 Subject: ftrace: scripts/recordmcount.pl support for ARM Impact: extend scripts/recordmcount.pl to ARM Arm uses %progbits instead of @progbits and requires only 4 byte alignment. [ Thanks to Sam Ravnborg for mentioning that ARM uses %progbits ] Signed-off-by: Jim Radford Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- scripts/recordmcount.pl | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index 03b6af1388ea..0197e2f6b544 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -136,6 +136,7 @@ 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) my $alignment; # The .align value to use for $mcount_section +my $section_type; # Section header plus possible alignment command if ($arch eq "x86") { if ($bits == 64) { @@ -153,6 +154,7 @@ $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; +$section_type = '@progbits'; $type = ".long"; if ($arch eq "x86_64") { @@ -192,6 +194,10 @@ if ($arch eq "x86_64") { $type = ".quad"; } +} elsif ($arch eq "arm") { + $alignment = 2; + $section_type = '%progbits'; + } else { die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD"; } @@ -312,7 +318,7 @@ sub update_funcs if (!$opened) { open(FILE, ">$mcount_s") || die "can't create $mcount_s\n"; $opened = 1; - print FILE "\t.section $mcount_section,\"a\",\@progbits\n"; + print FILE "\t.section $mcount_section,\"a\",$section_type\n"; print FILE "\t.align $alignment\n" if (defined($alignment)); } printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset; -- cgit v1.2.3