diff options
| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-07-08 23:07:41 +0200 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-07-09 00:53:49 +0200 |
| commit | 673c2c34f684e9d4328459e426ab54d51a5865c5 (patch) | |
| tree | 088062278fffd7a652761691dde8ba6c18104654 | |
| parent | Linux 4.2-rc1 (diff) | |
| download | linux-673c2c34f684e9d4328459e426ab54d51a5865c5.tar.xz linux-673c2c34f684e9d4328459e426ab54d51a5865c5.zip | |
modpost: work correctly with tile coldtext sections
The tilegx and tilepro compilers use .coldtext for their unlikely
executed text section name, so an __attribute__((cold)) function
will (when compiled with higher optimization levels) land in
the .coldtext section.
Modify modpost to add .coldtext to the set of OTHER_TEXT_SECTIONS
so we don't get warnings about referencing such a section in an
__ex_table block, and then also modify arch/tile/lib/memcpy_user_64.c
so that it uses plain ".coldtext" instead of ".coldtext.memcpy".
The latter naming is a relic of an earlier use of -ffunction-sections,
which we no longer use by default.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
| -rw-r--r-- | arch/tile/lib/memcpy_user_64.c | 4 | ||||
| -rw-r--r-- | scripts/mod/modpost.c | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/tile/lib/memcpy_user_64.c b/arch/tile/lib/memcpy_user_64.c index 88c7016492c4..97bbb6060b25 100644 --- a/arch/tile/lib/memcpy_user_64.c +++ b/arch/tile/lib/memcpy_user_64.c @@ -28,7 +28,7 @@ #define _ST(p, inst, v) \ ({ \ asm("1: " #inst " %0, %1;" \ - ".pushsection .coldtext.memcpy,\"ax\";" \ + ".pushsection .coldtext,\"ax\";" \ "2: { move r0, %2; jrp lr };" \ ".section __ex_table,\"a\";" \ ".align 8;" \ @@ -41,7 +41,7 @@ ({ \ unsigned long __v; \ asm("1: " #inst " %0, %1;" \ - ".pushsection .coldtext.memcpy,\"ax\";" \ + ".pushsection .coldtext,\"ax\";" \ "2: { move r0, %2; jrp lr };" \ ".section __ex_table,\"a\";" \ ".align 8;" \ diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 91ee1b2e0f9a..12d3db3bd46b 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -886,7 +886,8 @@ static void check_section(const char *modname, struct elf_info *elf, #define TEXT_SECTIONS ".text", ".text.unlikely", ".sched.text", \ ".kprobes.text" #define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \ - ".fixup", ".entry.text", ".exception.text", ".text.*" + ".fixup", ".entry.text", ".exception.text", ".text.*", \ + ".coldtext" #define INIT_SECTIONS ".init.*" #define MEM_INIT_SECTIONS ".meminit.*" |