samples/bpf: Define MAX_ENTRIES instead of a magic number in offwaketime

Define MAX_ENTRIES instead of using 10000 as a magic number in various
places.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210815065013.15411-1-falakreyaz@gmail.com

diff --git a/samples/bpf/offwaketime_kern.c b/samples/bpf/offwaketime_kern.c
index 14b792915a9cb765c12bfe2ecba266d21dffd46a..4866afd054dab8eee087d269ee0ec4949e5c95b0 100644 (file)
--- a/samples/bpf/offwaketime_kern.c
+++ b/samples/bpf/offwaketime_kern.c
@@ -20,6 +20,7 @@
        })
 
 #define MINBLOCK_US    1
+#define MAX_ENTRIES    10000
 
 struct key_t {
        char waker[TASK_COMM_LEN];
@@ -32,14 +33,14 @@ struct {
        __uint(type, BPF_MAP_TYPE_HASH);
        __type(key, struct key_t);
        __type(value, u64);
-       __uint(max_entries, 10000);
+       __uint(max_entries, MAX_ENTRIES);
 } counts SEC(".maps");
 
 struct {
        __uint(type, BPF_MAP_TYPE_HASH);
        __type(key, u32);
        __type(value, u64);
-       __uint(max_entries, 10000);
+       __uint(max_entries, MAX_ENTRIES);
 } start SEC(".maps");
 
 struct wokeby_t {
@@ -51,14 +52,14 @@ struct {
        __uint(type, BPF_MAP_TYPE_HASH);
        __type(key, u32);
        __type(value, struct wokeby_t);
-       __uint(max_entries, 10000);
+       __uint(max_entries, MAX_ENTRIES);
 } wokeby SEC(".maps");
 
 struct {
        __uint(type, BPF_MAP_TYPE_STACK_TRACE);
        __uint(key_size, sizeof(u32));
        __uint(value_size, PERF_MAX_STACK_DEPTH * sizeof(u64));
-       __uint(max_entries, 10000);
+       __uint(max_entries, MAX_ENTRIES);
 } stackmap SEC(".maps");
 
 #define STACKID_FLAGS (0 | BPF_F_FAST_STACK_CMP)