diff mbox series

[v2,2/2] hw/arm/smmu-common: Avoid using inlined functions with external linkage

Message ID 20221216214924.4711-3-philmd@linaro.org
State Superseded
Headers show
Series hw/arm/smmu-common: Avoid using inlined functions with external linkage | expand

Commit Message

Philippe Mathieu-Daudé Dec. 16, 2022, 9:49 p.m. UTC
When using Clang ("Apple clang version 14.0.0 (clang-1400.0.29.202)")
and building with -Wall we get:

  hw/arm/smmu-common.c:173:33: warning: static function 'smmu_hash_remove_by_asid_iova' is used in an inline function with external linkage [-Wstatic-in-inline]
  hw/arm/smmu-common.h:170:1: note: use 'static' to give inline function 'smmu_iotlb_inv_iova' internal linkage
    void smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
    ^
    static

None of our code base require / use inlined functions with external
linkage. Some places use internal inlining in the hot path. These
two functions are certainly not in any hot path and don't justify
any inlining, so these are likely oversights rather than intentional.

Reported-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/arm/smmu-common.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

Comments

Richard Henderson Dec. 16, 2022, 11:55 p.m. UTC | #1
On 12/16/22 13:49, Philippe Mathieu-Daudé wrote:
> When using Clang ("Apple clang version 14.0.0 (clang-1400.0.29.202)")
> and building with -Wall we get:
> 
>    hw/arm/smmu-common.c:173:33: warning: static function 'smmu_hash_remove_by_asid_iova' is used in an inline function with external linkage [-Wstatic-in-inline]
>    hw/arm/smmu-common.h:170:1: note: use 'static' to give inline function 'smmu_iotlb_inv_iova' internal linkage
>      void smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
>      ^
>      static
> 
> None of our code base require / use inlined functions with external
> linkage. Some places use internal inlining in the hot path. These
> two functions are certainly not in any hot path and don't justify
> any inlining, so these are likely oversights rather than intentional.
> 
> Reported-by: Stefan Weil<sw@weilnetz.de>
> Reviewed-by: Peter Maydell<peter.maydell@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé<philmd@linaro.org>
> ---
>   hw/arm/smmu-common.c | 13 ++++++-------
>   1 file changed, 6 insertions(+), 7 deletions(-)


Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~
Eric Auger Dec. 19, 2022, 8:39 a.m. UTC | #2
On 12/16/22 22:49, Philippe Mathieu-Daudé wrote:
> When using Clang ("Apple clang version 14.0.0 (clang-1400.0.29.202)")
> and building with -Wall we get:
>
>   hw/arm/smmu-common.c:173:33: warning: static function 'smmu_hash_remove_by_asid_iova' is used in an inline function with external linkage [-Wstatic-in-inline]
>   hw/arm/smmu-common.h:170:1: note: use 'static' to give inline function 'smmu_iotlb_inv_iova' internal linkage
>     void smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
>     ^
>     static
>
> None of our code base require / use inlined functions with external
> linkage. Some places use internal inlining in the hot path. These
> two functions are certainly not in any hot path and don't justify
> any inlining, so these are likely oversights rather than intentional.
>
> Reported-by: Stefan Weil <sw@weilnetz.de>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>

Thanks!

Eric
> ---
>  hw/arm/smmu-common.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
> index 9f196625a2..54186f31cb 100644
> --- a/hw/arm/smmu-common.c
> +++ b/hw/arm/smmu-common.c
> @@ -116,7 +116,7 @@ void smmu_iotlb_insert(SMMUState *bs, SMMUTransCfg *cfg, SMMUTLBEntry *new)
>      g_hash_table_insert(bs->iotlb, key, new);
>  }
>  
> -inline void smmu_iotlb_inv_all(SMMUState *s)
> +void smmu_iotlb_inv_all(SMMUState *s)
>  {
>      trace_smmu_iotlb_inv_all();
>      g_hash_table_remove_all(s->iotlb);
> @@ -146,9 +146,8 @@ static gboolean smmu_hash_remove_by_asid_iova(gpointer key, gpointer value,
>             ((entry->iova & ~info->mask) == info->iova);
>  }
>  
> -inline void
> -smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
> -                    uint8_t tg, uint64_t num_pages, uint8_t ttl)
> +void smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
> +                         uint8_t tg, uint64_t num_pages, uint8_t ttl)
>  {
>      /* if tg is not set we use 4KB range invalidation */
>      uint8_t granule = tg ? tg * 2 + 10 : 12;
> @@ -174,7 +173,7 @@ smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
>                                  &info);
>  }
>  
> -inline void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid)
> +void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid)
>  {
>      trace_smmu_iotlb_inv_asid(asid);
>      g_hash_table_foreach_remove(s->iotlb, smmu_hash_remove_by_asid, &asid);
> @@ -374,8 +373,8 @@ error:
>   *
>   * return 0 on success
>   */
> -inline int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
> -                    SMMUTLBEntry *tlbe, SMMUPTWEventInfo *info)
> +int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
> +             SMMUTLBEntry *tlbe, SMMUPTWEventInfo *info)
>  {
>      if (!cfg->aa64) {
>          /*
diff mbox series

Patch

diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
index 9f196625a2..54186f31cb 100644
--- a/hw/arm/smmu-common.c
+++ b/hw/arm/smmu-common.c
@@ -116,7 +116,7 @@  void smmu_iotlb_insert(SMMUState *bs, SMMUTransCfg *cfg, SMMUTLBEntry *new)
     g_hash_table_insert(bs->iotlb, key, new);
 }
 
-inline void smmu_iotlb_inv_all(SMMUState *s)
+void smmu_iotlb_inv_all(SMMUState *s)
 {
     trace_smmu_iotlb_inv_all();
     g_hash_table_remove_all(s->iotlb);
@@ -146,9 +146,8 @@  static gboolean smmu_hash_remove_by_asid_iova(gpointer key, gpointer value,
            ((entry->iova & ~info->mask) == info->iova);
 }
 
-inline void
-smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
-                    uint8_t tg, uint64_t num_pages, uint8_t ttl)
+void smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
+                         uint8_t tg, uint64_t num_pages, uint8_t ttl)
 {
     /* if tg is not set we use 4KB range invalidation */
     uint8_t granule = tg ? tg * 2 + 10 : 12;
@@ -174,7 +173,7 @@  smmu_iotlb_inv_iova(SMMUState *s, int asid, dma_addr_t iova,
                                 &info);
 }
 
-inline void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid)
+void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid)
 {
     trace_smmu_iotlb_inv_asid(asid);
     g_hash_table_foreach_remove(s->iotlb, smmu_hash_remove_by_asid, &asid);
@@ -374,8 +373,8 @@  error:
  *
  * return 0 on success
  */
-inline int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
-                    SMMUTLBEntry *tlbe, SMMUPTWEventInfo *info)
+int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
+             SMMUTLBEntry *tlbe, SMMUPTWEventInfo *info)
 {
     if (!cfg->aa64) {
         /*