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authorAlexei Starovoitov <ast@fb.com>2016-02-18 06:58:57 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-20 08:21:44 +0300
commit568b329a02f75ed3aaae5eb2cca384cb9e09cb29 (patch)
treeae50fa4f98c1c7ad07ad834677be3304a282499e /kernel/events/internal.h
parent6b83d28a55a891a9d70fc61ccb1c138e47dcbe74 (diff)
downloadlinux-568b329a02f75ed3aaae5eb2cca384cb9e09cb29.tar.xz
perf: generalize perf_callchain
. avoid walking the stack when there is no room left in the buffer . generalize get_perf_callchain() to be called from bpf helper Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/events/internal.h')
-rw-r--r--kernel/events/internal.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 2bbad9c1274c..4199b6d193f5 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -182,8 +182,6 @@ DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user)
/* Callchain handling */
extern struct perf_callchain_entry *
perf_callchain(struct perf_event *event, struct pt_regs *regs);
-extern int get_callchain_buffers(void);
-extern void put_callchain_buffers(void);
static inline int get_recursion_context(int *recursion)
{