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authorKees Cook <keescook@chromium.org>2018-06-12 14:03:40 -0700
committerKees Cook <keescook@chromium.org>2018-06-12 16:19:22 -0700
commit6396bb221514d2876fd6dc0aa2a1f240d99b37bb (patch)
treec5c501e859b93de096b1f01160135612ed765059 /arch/powerpc
parent6da2ec56059c3c7a7e5f729e6349e74ace1e5c57 (diff)
downloadlinux-6396bb221514d2876fd6dc0aa2a1f240d99b37bb.tar.bz2
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/vdso.c4
-rw-r--r--arch/powerpc/mm/numa.c2
-rw-r--r--arch/powerpc/net/bpf_jit_comp.c2
-rw-r--r--arch/powerpc/net/bpf_jit_comp64.c2
-rw-r--r--arch/powerpc/oprofile/cell/spu_profiler.c4
-rw-r--r--arch/powerpc/platforms/4xx/pci.c2
-rw-r--r--arch/powerpc/platforms/powernv/opal-sysparam.c8
-rw-r--r--arch/powerpc/sysdev/mpic.c4
-rw-r--r--arch/powerpc/sysdev/xive/native.c2
9 files changed, 15 insertions, 15 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index b44ec104a5a1..d2205b97628c 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -791,7 +791,7 @@ static int __init vdso_init(void)
#ifdef CONFIG_VDSO32
/* Make sure pages are in the correct state */
- vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 2),
+ vdso32_pagelist = kcalloc(vdso32_pages + 2, sizeof(struct page *),
GFP_KERNEL);
BUG_ON(vdso32_pagelist == NULL);
for (i = 0; i < vdso32_pages; i++) {
@@ -805,7 +805,7 @@ static int __init vdso_init(void)
#endif
#ifdef CONFIG_PPC64
- vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 2),
+ vdso64_pagelist = kcalloc(vdso64_pages + 2, sizeof(struct page *),
GFP_KERNEL);
BUG_ON(vdso64_pagelist == NULL);
for (i = 0; i < vdso64_pages; i++) {
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 57a5029b4521..0c7e05d89244 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1316,7 +1316,7 @@ int numa_update_cpu_topology(bool cpus_locked)
if (!weight)
return 0;
- updates = kzalloc(weight * (sizeof(*updates)), GFP_KERNEL);
+ updates = kcalloc(weight, sizeof(*updates), GFP_KERNEL);
if (!updates)
return 0;
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index a9636d8cba15..5b061fc81df3 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -566,7 +566,7 @@ void bpf_jit_compile(struct bpf_prog *fp)
if (!bpf_jit_enable)
return;
- addrs = kzalloc((flen+1) * sizeof(*addrs), GFP_KERNEL);
+ addrs = kcalloc(flen + 1, sizeof(*addrs), GFP_KERNEL);
if (addrs == NULL)
return;
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index f1c95779843b..380cbf9a40d9 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -949,7 +949,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp)
goto skip_init_ctx;
}
- addrs = kzalloc((flen+1) * sizeof(*addrs), GFP_KERNEL);
+ addrs = kcalloc(flen + 1, sizeof(*addrs), GFP_KERNEL);
if (addrs == NULL) {
fp = org_fp;
goto out_addrs;
diff --git a/arch/powerpc/oprofile/cell/spu_profiler.c b/arch/powerpc/oprofile/cell/spu_profiler.c
index 5182f2936af2..4e099e556645 100644
--- a/arch/powerpc/oprofile/cell/spu_profiler.c
+++ b/arch/powerpc/oprofile/cell/spu_profiler.c
@@ -210,8 +210,8 @@ int start_spu_profiling_cycles(unsigned int cycles_reset)
timer.function = profile_spus;
/* Allocate arrays for collecting SPU PC samples */
- samples = kzalloc(SPUS_PER_NODE *
- TRACE_ARRAY_SIZE * sizeof(u32), GFP_KERNEL);
+ samples = kcalloc(SPUS_PER_NODE * TRACE_ARRAY_SIZE, sizeof(u32),
+ GFP_KERNEL);
if (!samples)
return -ENOMEM;
diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c
index 73e6b36bcd51..5aca523551ae 100644
--- a/arch/powerpc/platforms/4xx/pci.c
+++ b/arch/powerpc/platforms/4xx/pci.c
@@ -1449,7 +1449,7 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
count = ppc4xx_pciex_hwops->core_init(np);
if (count > 0) {
ppc4xx_pciex_ports =
- kzalloc(count * sizeof(struct ppc4xx_pciex_port),
+ kcalloc(count, sizeof(struct ppc4xx_pciex_port),
GFP_KERNEL);
if (ppc4xx_pciex_ports) {
ppc4xx_pciex_port_count = count;
diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c
index 6fd4092798d5..9aa87df114fd 100644
--- a/arch/powerpc/platforms/powernv/opal-sysparam.c
+++ b/arch/powerpc/platforms/powernv/opal-sysparam.c
@@ -198,21 +198,21 @@ void __init opal_sys_param_init(void)
goto out_param_buf;
}
- id = kzalloc(sizeof(*id) * count, GFP_KERNEL);
+ id = kcalloc(count, sizeof(*id), GFP_KERNEL);
if (!id) {
pr_err("SYSPARAM: Failed to allocate memory to read parameter "
"id\n");
goto out_param_buf;
}
- size = kzalloc(sizeof(*size) * count, GFP_KERNEL);
+ size = kcalloc(count, sizeof(*size), GFP_KERNEL);
if (!size) {
pr_err("SYSPARAM: Failed to allocate memory to read parameter "
"size\n");
goto out_free_id;
}
- perm = kzalloc(sizeof(*perm) * count, GFP_KERNEL);
+ perm = kcalloc(count, sizeof(*perm), GFP_KERNEL);
if (!perm) {
pr_err("SYSPARAM: Failed to allocate memory to read supported "
"action on the parameter");
@@ -235,7 +235,7 @@ void __init opal_sys_param_init(void)
goto out_free_perm;
}
- attr = kzalloc(sizeof(*attr) * count, GFP_KERNEL);
+ attr = kcalloc(count, sizeof(*attr), GFP_KERNEL);
if (!attr) {
pr_err("SYSPARAM: Failed to allocate memory for parameter "
"attributes\n");
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index df062a154ca8..353b43972bbf 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -544,7 +544,7 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic)
printk(KERN_INFO "mpic: Setting up HT PICs workarounds for U3/U4\n");
/* Allocate fixups array */
- mpic->fixups = kzalloc(128 * sizeof(*mpic->fixups), GFP_KERNEL);
+ mpic->fixups = kcalloc(128, sizeof(*mpic->fixups), GFP_KERNEL);
BUG_ON(mpic->fixups == NULL);
/* Init spinlock */
@@ -1324,7 +1324,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
if (psrc) {
/* Allocate a bitmap with one bit per interrupt */
unsigned int mapsize = BITS_TO_LONGS(intvec_top + 1);
- mpic->protected = kzalloc(mapsize*sizeof(long), GFP_KERNEL);
+ mpic->protected = kcalloc(mapsize, sizeof(long), GFP_KERNEL);
BUG_ON(mpic->protected == NULL);
for (i = 0; i < psize/sizeof(u32); i++) {
if (psrc[i] > intvec_top)
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
index 83bcd72b21cf..311185b9960a 100644
--- a/arch/powerpc/sysdev/xive/native.c
+++ b/arch/powerpc/sysdev/xive/native.c
@@ -489,7 +489,7 @@ static bool xive_parse_provisioning(struct device_node *np)
if (rc == 0)
return true;
- xive_provision_chips = kzalloc(4 * xive_provision_chip_count,
+ xive_provision_chips = kcalloc(4, xive_provision_chip_count,
GFP_KERNEL);
if (WARN_ON(!xive_provision_chips))
return false;