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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
This commit is contained in:
Muhammad Falak R Wani 2021-08-15 12:20:13 +05:30 committed by Andrii Nakryiko
parent faff1cca3b
commit d1bf7c4d5d
1 changed files with 5 additions and 4 deletions
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9
samples/bpf/offwaketime_kern.c
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@ -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)