diff options
| author | Jan Hoffmann <jan@3e8.eu> | 2022-12-17 21:45:43 +0100 |
|---|---|---|
| committer | Sander Vanheule <sander@svanheule.net> | 2022-12-27 16:29:57 +0100 |
| commit | 2c40359c5c12621fa386efca3139ea523db6d39f (patch) | |
| tree | 81e916c19fb678eeb067e809a2911a2e31b28c26 /target/linux/realtek | |
| parent | ae0a3f88ac335801f17035504ba572d14205787a (diff) | |
| download | upstream-2c40359c5c12621fa386efca3139ea523db6d39f.tar.gz upstream-2c40359c5c12621fa386efca3139ea523db6d39f.tar.bz2 upstream-2c40359c5c12621fa386efca3139ea523db6d39f.zip | |
realtek: add cond_resched to loops accessing the FDB table
A full loop accessing all FDB entries can take several milliseconds
(on RTL839x about 20 ms), so give other kernel tasks a chance to run.
This is especially important for rtl83xx_port_fdb_dump which is itself
called in a loop for all ports by the kernel.
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Diffstat (limited to 'target/linux/realtek')
4 files changed, 12 insertions, 0 deletions
diff --git a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/debugfs.c b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/debugfs.c index 9a7c7714c6..3c935f629a 100644 --- a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/debugfs.c +++ b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/debugfs.c @@ -343,6 +343,9 @@ static int l2_table_show(struct seq_file *m, void *v) seq_printf(m, "Hash table bucket %d index %d ", bucket, index); l2_table_print_entry(m, priv, &e); + + if (!((i + 1) % 64)) + cond_resched(); } for (i = 0; i < 64; i++) { diff --git a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c index 6eea0dc936..63461ff573 100644 --- a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c +++ b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/dsa.c @@ -1728,6 +1728,9 @@ static int rtl83xx_port_fdb_dump(struct dsa_switch *ds, int port, if (e.port == port || e.port == RTL930X_PORT_IGNORE) cb(e.mac, e.vid, e.is_static, data); + + if (!((i + 1) % 64)) + cond_resched(); } for (i = 0; i < 64; i++) { diff --git a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/debugfs.c b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/debugfs.c index 9a7c7714c6..3c935f629a 100644 --- a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/debugfs.c +++ b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/debugfs.c @@ -343,6 +343,9 @@ static int l2_table_show(struct seq_file *m, void *v) seq_printf(m, "Hash table bucket %d index %d ", bucket, index); l2_table_print_entry(m, priv, &e); + + if (!((i + 1) % 64)) + cond_resched(); } for (i = 0; i < 64; i++) { diff --git a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c index 9281e08d33..3e71813112 100644 --- a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c +++ b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c @@ -1725,6 +1725,9 @@ static int rtl83xx_port_fdb_dump(struct dsa_switch *ds, int port, if (e.port == port || e.port == RTL930X_PORT_IGNORE) cb(e.mac, e.vid, e.is_static, data); + + if (!((i + 1) % 64)) + cond_resched(); } for (i = 0; i < 64; i++) { |