Messages in this thread Patch in this message | | | Date | Sat, 21 Jul 2018 08:47:24 +0200 (CEST) | From | Julia Lawall <> | Subject | [PATCH] NTB: fix debugfs_simple_attr.cocci warnings |
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From: kbuild test robot <fengguang.wu@intel.com>
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for debugfs files.
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file() imposes some significant overhead as compared to DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().
Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
Fixes: c75153197d20 ("NTB: Introduce NTB MSI Test Client") Signed-off-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> ---
I don't know much about this issue, beyondwhat is explained by the semantic patch. Please check if the changes can be relevant.
ntb_msi_test.c | 61 ++++++++++++++++++++++++++++----------------------------- 1 file changed, 31 insertions(+), 30 deletions(-)
--- a/drivers/ntb/test/ntb_msi_test.c +++ b/drivers/ntb/test/ntb_msi_test.c @@ -170,8 +170,8 @@ static int ntb_msit_dbgfs_trigger(void * &peer->msi_desc[idx]); }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_trigger_fops, NULL, - ntb_msit_dbgfs_trigger, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_trigger_fops, NULL, ntb_msit_dbgfs_trigger, + "%llu\n");
static int ntb_msit_dbgfs_port_get(void *data, u64 *port) { @@ -182,8 +182,8 @@ static int ntb_msit_dbgfs_port_get(void return 0; }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_port_fops, ntb_msit_dbgfs_port_get, - NULL, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_port_fops, ntb_msit_dbgfs_port_get, NULL, + "%llu\n");
static int ntb_msit_dbgfs_count_get(void *data, u64 *count) { @@ -194,8 +194,8 @@ static int ntb_msit_dbgfs_count_get(void return 0; }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_count_fops, ntb_msit_dbgfs_count_get, - NULL, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_count_fops, ntb_msit_dbgfs_count_get, NULL, + "%llu\n");
static int ntb_msit_dbgfs_ready_get(void *data, u64 *ready) { @@ -213,8 +213,8 @@ static int ntb_msit_dbgfs_ready_set(void return wait_for_completion_interruptible(&peer->init_comp); }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_ready_fops, ntb_msit_dbgfs_ready_get, - ntb_msit_dbgfs_ready_set, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_ready_fops, ntb_msit_dbgfs_ready_get, + ntb_msit_dbgfs_ready_set, "%llu\n");
static int ntb_msit_dbgfs_occurrences_get(void *data, u64 *occurrences) { @@ -225,9 +225,8 @@ static int ntb_msit_dbgfs_occurrences_ge return 0; }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_occurrences_fops, - ntb_msit_dbgfs_occurrences_get, - NULL, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_occurrences_fops, + ntb_msit_dbgfs_occurrences_get, NULL, "%llu\n");
static int ntb_msit_dbgfs_local_port_get(void *data, u64 *port) { @@ -238,9 +237,8 @@ static int ntb_msit_dbgfs_local_port_get return 0; }
-DEFINE_SIMPLE_ATTRIBUTE(ntb_msit_local_port_fops, - ntb_msit_dbgfs_local_port_get, - NULL, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(ntb_msit_local_port_fops, + ntb_msit_dbgfs_local_port_get, NULL, "%llu\n");
static void ntb_msit_create_dbgfs(struct ntb_msit_ctx *nm) { @@ -251,8 +249,8 @@ static void ntb_msit_create_dbgfs(struct
nm->dbgfs_dir = debugfs_create_dir(pci_name(pdev), ntb_msit_dbgfs_topdir); - debugfs_create_file("port", 0400, nm->dbgfs_dir, nm, - &ntb_msit_local_port_fops); + debugfs_create_file_unsafe("port", 0400, nm->dbgfs_dir, nm, + &ntb_msit_local_port_fops);
for (i = 0; i < ntb_peer_port_count(nm->ntb); i++) { nm->peers[i].pidx = i; @@ -262,24 +260,27 @@ static void ntb_msit_create_dbgfs(struct snprintf(buf, sizeof(buf), "peer%d", i); peer_dir = debugfs_create_dir(buf, nm->dbgfs_dir);
- debugfs_create_file("trigger", 0200, peer_dir, - &nm->peers[i], &ntb_msit_trigger_fops); - - debugfs_create_file("port", 0400, peer_dir, - &nm->peers[i], &ntb_msit_port_fops); - - debugfs_create_file("count", 0400, peer_dir, - &nm->peers[i], &ntb_msit_count_fops); - - debugfs_create_file("ready", 0600, peer_dir, - &nm->peers[i], &ntb_msit_ready_fops); + debugfs_create_file_unsafe("trigger", 0200, peer_dir, + &nm->peers[i], + &ntb_msit_trigger_fops); + + debugfs_create_file_unsafe("port", 0400, peer_dir, + &nm->peers[i], &ntb_msit_port_fops); + + debugfs_create_file_unsafe("count", 0400, peer_dir, + &nm->peers[i], + &ntb_msit_count_fops); + + debugfs_create_file_unsafe("ready", 0600, peer_dir, + &nm->peers[i], + &ntb_msit_ready_fops); }
for (i = 0; i < num_irqs; i++) { snprintf(buf, sizeof(buf), "irq%d_occurrences", i); - debugfs_create_file(buf, 0400, nm->dbgfs_dir, - &nm->isr_ctx[i], - &ntb_msit_occurrences_fops); + debugfs_create_file_unsafe(buf, 0400, nm->dbgfs_dir, + &nm->isr_ctx[i], + &ntb_msit_occurrences_fops); } }
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