Joanne Koong b00fa38a9c
bpf: Enable non-atomic allocations in local storage ...
Currently, local storage memory can only be allocated atomically
(GFP_ATOMIC). This restriction is too strict for sleepable bpf
programs.
In this patch, the verifier detects whether the program is sleepable,
and passes the corresponding GFP_KERNEL or GFP_ATOMIC flag as a
5th argument to bpf_task/sk/inode_storage_get. This flag will propagate
down to the local storage functions that allocate memory.
Please note that bpf_task/sk/inode_storage_update_elem functions are
invoked by userspace applications through syscalls. Preemption is
disabled before bpf_task/sk/inode_storage_update_elem is called, which
means they will always have to allocate memory atomically.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com >
Signed-off-by: Alexei Starovoitov <ast@kernel.org >
Acked-by: KP Singh <kpsingh@kernel.org >
Acked-by: Martin KaFai Lau <kafai@fb.com >
Link: https://lore.kernel.org/bpf/20220318045553.3091807-2-joannekoong@fb.com
2022-03-20 18:55:05 -07:00
2022-03-20 18:55:05 -07:00
2022-02-22 16:14:35 -08:00
2022-01-20 08:52:55 +02:00
2021-11-03 17:21:37 +00:00
2022-02-14 10:22:28 +01:00
2021-12-01 00:06:43 +01:00
2022-02-06 22:37:27 +01:00
2022-01-17 05:49:30 +02:00
2021-12-02 17:25:21 +09:00
2022-01-22 08:33:37 +02:00
2022-01-11 09:51:26 -08:00
2022-01-16 10:08:13 +02:00
2022-02-11 23:30:02 +01:00
2022-02-07 21:02:31 +01:00
2022-02-03 11:27:38 -08:00
2022-01-26 13:04:05 -08:00
2022-02-19 11:11:05 +01:00
2022-01-23 06:20:44 +02:00
2022-03-17 20:17:19 -07:00
2021-05-02 00:43:35 +09:00
2021-10-18 06:17:01 -06:00
2022-02-03 11:20:34 -08:00
2021-10-27 12:32:34 +02:00
2021-12-14 17:39:42 -05:00
2021-11-06 16:43:20 -07:00
2022-01-25 13:22:51 -05:00
2021-11-01 21:17:39 -07:00
2022-01-11 13:08:21 -08:00
2022-02-09 16:04:26 -05:00
2021-08-11 13:11:12 -07:00
2021-09-08 15:32:35 -07:00
2021-08-16 18:55:32 +02:00
2021-11-24 12:20:27 +01:00
2021-12-25 12:20:55 -08:00
2022-02-17 09:11:02 -06:00
2022-01-20 08:52:55 +02:00
2022-03-17 20:16:29 -07:00
2021-11-09 10:02:51 -08:00
2022-03-17 20:16:29 -07:00
2021-06-18 11:43:08 +02:00
2021-05-27 04:01:50 +09:00
2021-02-26 09:41:03 -08:00
2022-01-22 08:33:34 +02:00
2021-10-15 11:25:18 +02:00
2021-07-05 10:46:20 +02:00
2022-03-17 20:17:18 -07:00
2021-08-17 17:50:51 +02:00
2021-11-11 13:09:33 +01:00
2021-11-09 10:02:52 -08:00
2021-12-13 12:04:45 -06:00
2021-11-06 13:30:42 -07:00
2021-02-22 12:33:26 +00:00
2021-09-08 15:32:34 -07:00
2021-05-07 00:26:33 -07:00
2022-01-22 08:33:36 +02:00
2022-01-20 10:41:01 +02:00
2022-01-11 18:45:02 -08:00
2022-02-16 12:51:32 -08:00
2022-01-11 18:45:02 -08:00
2022-02-03 11:20:34 -08:00
2021-12-29 10:37:33 +01:00
2021-09-03 09:58:12 -07:00
2021-08-27 16:30:18 +08:00
2022-01-20 08:52:55 +02:00
2021-12-28 11:26:18 +01:00
2021-09-03 09:58:12 -07:00
2021-10-14 13:29:18 +02:00
2022-01-08 12:43:57 -06:00
2022-01-08 12:43:57 -06:00
2021-11-12 11:53:16 -08:00
2022-01-22 08:33:37 +02:00
2021-09-22 10:24:01 -04:00
2021-12-07 16:36:17 -08:00
2021-09-30 09:37:27 +01:00
2022-02-10 19:09:12 -08:00
2022-02-10 19:08:54 -08:00
2021-10-22 15:32:46 +02:00
2021-08-10 14:57:42 +02:00
2021-12-02 15:07:22 +01:00
2022-02-03 17:02:21 -08:00
2021-11-06 13:30:43 -07:00
2021-07-05 10:46:33 +02:00
2021-03-23 16:01:58 +01:00
2022-01-15 16:30:30 +02:00
2022-02-17 09:11:26 -06:00
2021-06-23 16:41:24 -06:00
2022-01-22 08:33:37 +02:00
2021-04-30 11:20:42 -07:00
2021-12-07 16:36:17 -08:00
2021-08-16 11:39:51 -04:00
2022-01-08 12:43:57 -06:00
2022-02-17 09:11:57 -06:00
2021-05-07 00:26:34 -07:00
2021-05-09 13:07:03 -07:00
2022-02-25 10:40:14 -06:00
2021-09-08 11:50:27 -07:00
2021-07-03 11:41:14 -07:00
2022-01-22 08:33:34 +02:00
2021-08-17 07:49:10 -10:00
2022-01-10 07:54:04 -10:00
b00fa38a9c