Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 083/103] perf tools: Fix arm64 build error with gcc-11 | Date | Wed, 1 Sep 2021 14:28:33 +0200 |
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From: Jianlin Lv <Jianlin.Lv@arm.com>
commit 067012974c8ae31a8886046df082aeba93592972 upstream.
gcc version: 11.0.0 20210208 (experimental) (GCC)
Following build error on arm64:
....... In function ‘printf’, inlined from ‘regs_dump__printf’ at util/session.c:1141:3, inlined from ‘regs__printf’ at util/session.c:1169:2: /usr/include/aarch64-linux-gnu/bits/stdio2.h:107:10: \ error: ‘%-5s’ directive argument is null [-Werror=format-overflow=]
107 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, \ __va_arg_pack ());
...... In function ‘fprintf’, inlined from ‘perf_sample__fprintf_regs.isra’ at \ builtin-script.c:622:14: /usr/include/aarch64-linux-gnu/bits/stdio2.h:100:10: \ error: ‘%5s’ directive argument is null [-Werror=format-overflow=] 100 | return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, 101 | __va_arg_pack ());
cc1: all warnings being treated as errors .......
This patch fixes Wformat-overflow warnings. Add helper function to convert NULL to "unknown".
Signed-off-by: Jianlin Lv <Jianlin.Lv@arm.com> Reviewed-by: John Garry <john.garry@huawei.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Guo Ren <guoren@kernel.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: iecedge@gmail.com Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Link: http://lore.kernel.org/lkml/20210218031245.2078492-1-Jianlin.Lv@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- tools/perf/arch/arm/include/perf_regs.h | 2 +- tools/perf/arch/arm64/include/perf_regs.h | 2 +- tools/perf/arch/csky/include/perf_regs.h | 2 +- tools/perf/arch/powerpc/include/perf_regs.h | 2 +- tools/perf/arch/riscv/include/perf_regs.h | 2 +- tools/perf/arch/s390/include/perf_regs.h | 2 +- tools/perf/arch/x86/include/perf_regs.h | 2 +- tools/perf/util/perf_regs.h | 7 +++++++ 8 files changed, 14 insertions(+), 7 deletions(-)
--- a/tools/perf/arch/arm/include/perf_regs.h +++ b/tools/perf/arch/arm/include/perf_regs.h @@ -15,7 +15,7 @@ void perf_regs_load(u64 *regs); #define PERF_REG_IP PERF_REG_ARM_PC #define PERF_REG_SP PERF_REG_ARM_SP -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_ARM_R0: --- a/tools/perf/arch/arm64/include/perf_regs.h +++ b/tools/perf/arch/arm64/include/perf_regs.h @@ -15,7 +15,7 @@ void perf_regs_load(u64 *regs); #define PERF_REG_IP PERF_REG_ARM64_PC #define PERF_REG_SP PERF_REG_ARM64_SP -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_ARM64_X0: --- a/tools/perf/arch/csky/include/perf_regs.h +++ b/tools/perf/arch/csky/include/perf_regs.h @@ -15,7 +15,7 @@ #define PERF_REG_IP PERF_REG_CSKY_PC #define PERF_REG_SP PERF_REG_CSKY_SP -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_CSKY_A0: --- a/tools/perf/arch/powerpc/include/perf_regs.h +++ b/tools/perf/arch/powerpc/include/perf_regs.h @@ -73,7 +73,7 @@ static const char *reg_names[] = { [PERF_REG_POWERPC_SIER3] = "sier3", }; -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { return reg_names[id]; } --- a/tools/perf/arch/riscv/include/perf_regs.h +++ b/tools/perf/arch/riscv/include/perf_regs.h @@ -19,7 +19,7 @@ #define PERF_REG_IP PERF_REG_RISCV_PC #define PERF_REG_SP PERF_REG_RISCV_SP -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_RISCV_PC: --- a/tools/perf/arch/s390/include/perf_regs.h +++ b/tools/perf/arch/s390/include/perf_regs.h @@ -14,7 +14,7 @@ void perf_regs_load(u64 *regs); #define PERF_REG_IP PERF_REG_S390_PC #define PERF_REG_SP PERF_REG_S390_R15 -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_S390_R0: --- a/tools/perf/arch/x86/include/perf_regs.h +++ b/tools/perf/arch/x86/include/perf_regs.h @@ -23,7 +23,7 @@ void perf_regs_load(u64 *regs); #define PERF_REG_IP PERF_REG_X86_IP #define PERF_REG_SP PERF_REG_X86_SP -static inline const char *perf_reg_name(int id) +static inline const char *__perf_reg_name(int id) { switch (id) { case PERF_REG_X86_AX: --- a/tools/perf/util/perf_regs.h +++ b/tools/perf/util/perf_regs.h @@ -33,6 +33,13 @@ extern const struct sample_reg sample_re int perf_reg_value(u64 *valp, struct regs_dump *regs, int id); +static inline const char *perf_reg_name(int id) +{ + const char *reg_name = __perf_reg_name(id); + + return reg_name ?: "unknown"; +} + #else #define PERF_REGS_MASK 0 #define PERF_REGS_MAX 0
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