RDMA/ocrdma: Don't inline statistics functions

Fix the problem of KASAN causing the stack frame size to increase

drivers/infiniband/hw/ocrdma/ocrdma_stats.c:686:16: error: stack frame size (20664) exceeds limit (8192) in 'ocrdma_dbgfs_ops_read' [-Werror,-Wframe-larger-than]
static ssize_t ocrdma_dbgfs_ops_read(struct file *filp, char __user *buffer,
               ^

Some functions called by ocrdma_dbgfs_ops_read occupy a lot of stack space.
Mark these functions as noinline_for_stack to prevent them from accumulating
in ocrdma_dbgfs_ops_read.

Signed-off-by: Peng Hao <flyingpeng@tencent.com>
Link: https://lore.kernel.org/r/20240710091657.26291-1-flyingpeng@tencent.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
index 5f831e3bdbad0f9407b404643052608585826ddf..0834416cb3f8b6dba7eb60b1865ab46f57cd4f39 100644 (file)
--- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
@@ -46,7 +46,7 @@
 
 static struct dentry *ocrdma_dbgfs_dir;
 
-static int ocrdma_add_stat(char *start, char *pcur,
+static noinline_for_stack int ocrdma_add_stat(char *start, char *pcur,
                                char *name, u64 count)
 {
        char buff[128] = {0};
@@ -99,7 +99,7 @@ void ocrdma_release_stats_resources(struct ocrdma_dev *dev)
        kfree(mem->debugfs_mem);
 }
 
-static char *ocrdma_resource_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_resource_stats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -216,7 +216,7 @@ static char *ocrdma_resource_stats(struct ocrdma_dev *dev)
        return stats;
 }
 
-static char *ocrdma_rx_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_rx_stats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -284,7 +284,7 @@ static u64 ocrdma_sysfs_rcv_data(struct ocrdma_dev *dev)
                rx_stats->roce_frame_bytes_hi))/4;
 }
 
-static char *ocrdma_tx_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_tx_stats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -358,7 +358,7 @@ static u64 ocrdma_sysfs_xmit_data(struct ocrdma_dev *dev)
                                 tx_stats->read_rsp_bytes_hi))/4;
 }
 
-static char *ocrdma_wqe_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_wqe_stats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -391,7 +391,7 @@ static char *ocrdma_wqe_stats(struct ocrdma_dev *dev)
        return stats;
 }
 
-static char *ocrdma_db_errstats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_db_errstats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -412,7 +412,7 @@ static char *ocrdma_db_errstats(struct ocrdma_dev *dev)
        return stats;
 }
 
-static char *ocrdma_rxqp_errstats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_rxqp_errstats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -438,7 +438,7 @@ static char *ocrdma_rxqp_errstats(struct ocrdma_dev *dev)
        return stats;
 }
 
-static char *ocrdma_txqp_errstats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_txqp_errstats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;
        struct ocrdma_rdma_stats_resp *rdma_stats =
@@ -462,7 +462,7 @@ static char *ocrdma_txqp_errstats(struct ocrdma_dev *dev)
        return stats;
 }
 
-static char *ocrdma_tx_dbg_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_tx_dbg_stats(struct ocrdma_dev *dev)
 {
        int i;
        char *pstats = dev->stats_mem.debugfs_mem;
@@ -480,7 +480,7 @@ static char *ocrdma_tx_dbg_stats(struct ocrdma_dev *dev)
        return dev->stats_mem.debugfs_mem;
 }
 
-static char *ocrdma_rx_dbg_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_rx_dbg_stats(struct ocrdma_dev *dev)
 {
        int i;
        char *pstats = dev->stats_mem.debugfs_mem;
@@ -498,7 +498,7 @@ static char *ocrdma_rx_dbg_stats(struct ocrdma_dev *dev)
        return dev->stats_mem.debugfs_mem;
 }
 
-static char *ocrdma_driver_dbg_stats(struct ocrdma_dev *dev)
+static noinline_for_stack char *ocrdma_driver_dbg_stats(struct ocrdma_dev *dev)
 {
        char *stats = dev->stats_mem.debugfs_mem, *pcur;