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| author |  Johannes Berg <johannes.berg@intel.com>
| 2021-05-06 18:04:51 -0700 |
|---|---|---|
| committer |  Linus Torvalds <torvalds@linux-foundation.org>
| 2021-05-07 00:26:32 -0700 |
| commit | 1391efa952e8b22088f8626fc63ade26767b92d6 (patch) | |
| tree | 57b6bc31e366c9942c1cd7ac49677124323ae380 /kernel/gcov/gcc_4_7.c | |
| parent | gcov: simplify buffer allocation (diff) | |
| download | linux-1391efa952e8b22088f8626fc63ade26767b92d6.tar.gz linux-1391efa952e8b22088f8626fc63ade26767b92d6.tar.bz2 linux-1391efa952e8b22088f8626fc63ade26767b92d6.zip | |
gcov: use kvmalloc()
Using vmalloc() in gcov is really quite wasteful, many of the objects
allocated are really small (e.g. I've seen 24 bytes.) Use kvmalloc() to
automatically pick the better of kmalloc() or vmalloc() depending on the
size.
[johannes.berg@intel.com: fix clang-11+ build]
Link: https://lkml.kernel.org/r/20210412214210.6e1ecca9cdc5.I24459763acf0591d5e6b31c7e3a59890d802f79c@changeid
Link: https://lkml.kernel.org/r/20210315235453.799e7a9d627d.I741d0db096c6f312910f7f1bcdfde0fda20801a4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/gcov/gcc_4_7.c')
| -rw-r--r-- | kernel/gcov/gcc_4_7.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c index 1251f2434e90..460c12b7dfea 100644 --- a/kernel/gcov/gcc_4_7.c +++ b/kernel/gcov/gcc_4_7.c @@ -15,7 +15,7 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/string.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include "gcov.h" #if (__GNUC__ >= 10) @@ -309,7 +309,7 @@ struct gcov_info *gcov_info_dup(struct gcov_info *info) cv_size = sizeof(gcov_type) * sci_ptr->num; - dci_ptr->values = vmalloc(cv_size); + dci_ptr->values = kvmalloc(cv_size, GFP_KERNEL); if (!dci_ptr->values) goto err_free; @@ -351,7 +351,7 @@ void gcov_info_free(struct gcov_info *info) ci_ptr = info->functions[fi_idx]->ctrs; for (ct_idx = 0; ct_idx < active; ct_idx++, ci_ptr++) - vfree(ci_ptr->values); + kvfree(ci_ptr->values); kfree(info->functions[fi_idx]); } |