Commit d1bf7c4d authored by Muhammad Falak R Wani's avatar Muhammad Falak R Wani Committed by Andrii Nakryiko
Browse files

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: default avatarMuhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210815065013.15411-1-falakreyaz@gmail.com
parent faff1cca

samples/bpf/offwaketime_kern.c

+5 −4
Original line number Diff line number Diff line
@@ -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)