Commit-ID: 8cf7e0e22414f5acf85ecb7cd0d4482e6c9696ae
Gitweb: https://git.kernel.org/tip/8cf7e0e22414f5acf85ecb7cd0d4482e6c9696ae
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Sun, 7 Jan 2018 17:03:49 +0100
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 8 Jan 2018 12:33:01 -0300
perf: Make perf_callchain function static
And move it to core.c, because there's no caller of this function other
than the one in core.c
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20180107160356.28203-6-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
kernel/events/callchain.c | 15 ---------------
kernel/events/core.c | 16 ++++++++++++++++
kernel/events/internal.h | 4 ----
3 files changed, 16 insertions(+), 19 deletions(-)
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 1b2be63..772a43f 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -179,21 +179,6 @@ put_callchain_entry(int rctx)
}
struct perf_callchain_entry *
-perf_callchain(struct perf_event *event, struct pt_regs *regs)
-{
- bool kernel = !event->attr.exclude_callchain_kernel;
- bool user = !event->attr.exclude_callchain_user;
- /* Disallow cross-task user callchains. */
- bool crosstask = event->ctx->task && event->ctx->task != current;
- const u32 max_stack = event->attr.sample_max_stack;
-
- if (!kernel && !user)
- return NULL;
-
- return get_perf_callchain(regs, 0, kernel, user, max_stack, crosstask, true);
-}
-
-struct perf_callchain_entry *
get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user,
u32 max_stack, bool crosstask, bool add_mark)
{
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 55fb648..5fc1ded 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5980,6 +5980,22 @@ static u64 perf_virt_to_phys(u64 virt)
return phys_addr;
}
+static struct perf_callchain_entry *
+perf_callchain(struct perf_event *event, struct pt_regs *regs)
+{
+ bool kernel = !event->attr.exclude_callchain_kernel;
+ bool user = !event->attr.exclude_callchain_user;
+ /* Disallow cross-task user callchains. */
+ bool crosstask = event->ctx->task && event->ctx->task != current;
+ const u32 max_stack = event->attr.sample_max_stack;
+
+ if (!kernel && !user)
+ return NULL;
+
+ return get_perf_callchain(regs, 0, kernel, user,
+ max_stack, crosstask, true);
+}
+
void perf_prepare_sample(struct perf_event_header *header,
struct perf_sample_data *data,
struct perf_event *event,
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 09b1537..6dc725a 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -201,10 +201,6 @@ arch_perf_out_copy_user(void *dst, const void *src, unsigned long n)
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);
-
static inline int get_recursion_context(int *recursion)
{
int rctx;
--
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