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| author | Rabin Vincent <rabin@rab.in> | 2010-08-10 19:43:28 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-09-02 15:27:40 +0100 |
| commit | 3b6c223b1b97ad60bbb0f4efda57d649414ac2a2 (patch) | |
| tree | 291dcb285e8cb64415a82ed1c65dc9681921a257 /scripts | |
| parent | f9810a82536e0c730c57844753e6c08cc7f77881 (diff) | |
| download | op-kernel-dev-3b6c223b1b97ad60bbb0f4efda57d649414ac2a2.zip op-kernel-dev-3b6c223b1b97ad60bbb0f4efda57d649414ac2a2.tar.gz | |
ARM: 6318/1: ftrace: fix and update dynamic ftrace
This adds mcount recording and updates dynamic ftrace for ARM to work
with the new ftrace dyamic tracing implementation. It also adds support
for the mcount format used by newer ARM compilers.
With dynamic tracing, mcount() is implemented as a nop. Callsites are
patched on startup with nops, and dynamically patched to call to the
ftrace_caller() routine as needed.
Acked-by: Steven Rostedt <rostedt@goodmis.org> [recordmcount.pl change]
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/recordmcount.pl | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index e67f054..022d467 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -270,6 +270,8 @@ if ($arch eq "x86_64") { } elsif ($arch eq "arm") { $alignment = 2; $section_type = '%progbits'; + $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_ARM_(CALL|PC24)" . + "\\s+(__gnu_mcount_nc|mcount)\$"; } elsif ($arch eq "ia64") { $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$"; |
