On Fri, 26 Feb 2016 17:48:44 +0100
Alexander Potapenko [off-list ref] wrote:

KASAN needs to know whether the allocation happens in an IRQ handler.
This lets us strip everything below the IRQ entry point to reduce the
number of unique stack traces needed to be stored.

Move the definition of __irq_entry to <linux/interrupt.h> so that the
users don't need to pull in <linux/ftrace.h>. Also introduce the
__softirq_entry macro which is similar to __irq_entry, but puts the
corresponding functions to the .softirqentry.text section.

Signed-off-by: Alexander Potapenko <glider@google.com>

Acked-by: Steven Rostedt <rostedt@goodmis.org>

-- Steve

---
v2: - per request from Steven Rostedt, moved the declarations of __softirq_entry
and __irq_entry to <linux/interrupt.h>

v3: - minor description changes
---
 arch/arm/kernel/vmlinux.lds.S        |  1 +
 arch/arm64/kernel/vmlinux.lds.S      |  1 +
 arch/blackfin/kernel/vmlinux.lds.S   |  1 +
 arch/c6x/kernel/vmlinux.lds.S        |  1 +
 arch/metag/kernel/vmlinux.lds.S      |  1 +
 arch/microblaze/kernel/vmlinux.lds.S |  1 +
 arch/mips/kernel/vmlinux.lds.S       |  1 +
 arch/nios2/kernel/vmlinux.lds.S      |  1 +
 arch/openrisc/kernel/vmlinux.lds.S   |  1 +
 arch/parisc/kernel/vmlinux.lds.S     |  1 +
 arch/powerpc/kernel/vmlinux.lds.S    |  1 +
 arch/s390/kernel/vmlinux.lds.S       |  1 +
 arch/sh/kernel/vmlinux.lds.S         |  1 +
 arch/sparc/kernel/vmlinux.lds.S      |  1 +
 arch/tile/kernel/vmlinux.lds.S       |  1 +
 arch/x86/kernel/vmlinux.lds.S        |  1 +
 include/asm-generic/vmlinux.lds.h    | 12 +++++++++++-
 include/linux/ftrace.h               | 11 -----------
 include/linux/interrupt.h            | 20 ++++++++++++++++++++
 kernel/softirq.c                     |  2 +-
 kernel/trace/trace_functions_graph.c |  1 +
 21 files changed, 49 insertions(+), 13 deletions(-)

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