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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-07-29 18:32:10 -0500
committerPaul Burton <paul.burton@mips.com>2019-07-30 09:40:17 -0700
commit2d291e6cc183608e1f6eb8580268df7c68bdf7c3 (patch)
tree1b468fda7458652675d64cd0261799550a7ab16e /arch/mips
parent2a15d6481741a418837a22df3a440d5bd8b9c412 (diff)
downloadlinux-2d291e6cc183608e1f6eb8580268df7c68bdf7c3.tar.bz2
MIPS: OProfile: Mark expected switch fall-throughs
Mark switch cases where we are expecting to fall through. This patch fixes the following warning (Building: mips): arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_stop’: arch/mips/oprofile/op_model_mipsxx.c:217:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl3(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:218:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:219:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl2(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:220:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:221:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl1(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:222:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_start’: arch/mips/oprofile/op_model_mipsxx.c:197:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl3(WHAT | reg.control[3]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:198:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:199:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl2(WHAT | reg.control[2]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:200:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:201:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl1(WHAT | reg.control[1]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:202:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘reset_counters’: arch/mips/oprofile/op_model_mipsxx.c:299:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr3(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:300:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:302:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr2(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:303:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:305:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr1(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:306:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_perfcount_handler’: arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:248:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(3) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:249:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(2) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:249:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(2) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:250:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(1) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:250:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(1) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:251:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(0) ^~~~~~~~~~~~~~ CC usr/include/linux/pmu.h.s arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_setup’: arch/mips/oprofile/op_model_mipsxx.c:174:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr3(reg.counter[3]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:175:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:177:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr2(reg.counter[2]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:178:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:180:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr1(reg.counter[1]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:181:2: note: here case 1: ^~~~ Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Robert Richter <rric@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: oprofile-list@lists.sf.net Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/oprofile/op_model_mipsxx.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index 7c04b17f4a48..96c13a0ab078 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -172,12 +172,15 @@ static void mipsxx_cpu_setup(void *args)
case 4:
w_c0_perfctrl3(0);
w_c0_perfcntr3(reg.counter[3]);
+ /* fall through */
case 3:
w_c0_perfctrl2(0);
w_c0_perfcntr2(reg.counter[2]);
+ /* fall through */
case 2:
w_c0_perfctrl1(0);
w_c0_perfcntr1(reg.counter[1]);
+ /* fall through */
case 1:
w_c0_perfctrl0(0);
w_c0_perfcntr0(reg.counter[0]);
@@ -195,10 +198,13 @@ static void mipsxx_cpu_start(void *args)
switch (counters) {
case 4:
w_c0_perfctrl3(WHAT | reg.control[3]);
+ /* fall through */
case 3:
w_c0_perfctrl2(WHAT | reg.control[2]);
+ /* fall through */
case 2:
w_c0_perfctrl1(WHAT | reg.control[1]);
+ /* fall through */
case 1:
w_c0_perfctrl0(WHAT | reg.control[0]);
}
@@ -215,10 +221,13 @@ static void mipsxx_cpu_stop(void *args)
switch (counters) {
case 4:
w_c0_perfctrl3(0);
+ /* fall through */
case 3:
w_c0_perfctrl2(0);
+ /* fall through */
case 2:
w_c0_perfctrl1(0);
+ /* fall through */
case 1:
w_c0_perfctrl0(0);
}
@@ -236,6 +245,7 @@ static int mipsxx_perfcount_handler(void)
switch (counters) {
#define HANDLE_COUNTER(n) \
+ /* fall through */ \
case n + 1: \
control = r_c0_perfctrl ## n(); \
counter = r_c0_perfcntr ## n(); \
@@ -297,12 +307,15 @@ static void reset_counters(void *arg)
case 4:
w_c0_perfctrl3(0);
w_c0_perfcntr3(0);
+ /* fall through */
case 3:
w_c0_perfctrl2(0);
w_c0_perfcntr2(0);
+ /* fall through */
case 2:
w_c0_perfctrl1(0);
w_c0_perfcntr1(0);
+ /* fall through */
case 1:
w_c0_perfctrl0(0);
w_c0_perfcntr0(0);